$309+ Cheap flights from Chicago (CHI) to Buenos Aires (BUE)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/15. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — BUE
Mar 6 — Mar 131
1 adult, Economy
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Find cheap flights from Chicago to Buenos Aires with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Chicago to Buenos Aires
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Cheapest flights from Chicago to Buenos AiresExplore the most affordable flight options available from Chicago to Buenos Aires. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 4, 2026.
Explore the most affordable flight options available from Chicago to Buenos Aires. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 4, 2026.
This Kiwi.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/265:15 am
ORD
- EZE
3 stops21h 50m
Multiple Airlines
Thu 6/2511:00 am
EZE
- ORD
1 stop14h 40m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$910
This Mytrip deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/236:34 pm
ORD
- AEP
2 stops35h 56m
Multiple Airlines
Sun 6/285:10 pm
AEP
- ORD
2 stops32h 37m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$910
This Kiwi.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/205:15 am
ORD
- EZE
3 stops21h 45m
Multiple Airlines
Thu 6/2511:00 am
EZE
- ORD
1 stop14h 40m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$911
This Mytrip deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/57:23 pm
ORD
- AEP
2 stops31h 17m
Multiple Airlines
Sun 3/152:30 pm
AEP
- ORD
2 stops32h 50m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$911
This Kiwi.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/1511:27 am
ORD
- EZE
1 stop14h 18m
Multiple Airlines
Tue 8/2510:45 pm
EZE
- ORD
1 stop21h 30m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$913
This Mytrip deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/56:51 pm
ORD
- EZE
2 stops30h 44m
Multiple Airlines
Sun 3/83:55 pm
EZE
- ORD
3 stops29h 52m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$914
This Mytrip deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/17:23 pm
ORD
- AEP
2 stops34h 07m
Multiple Airlines
Tue 3/312:10 am
AEP
- ORD
2 stops23h 10m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$914
This Delta deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/1612:45 pm
MDW
- EZE
1 stop17h 15m
Delta
Mon 2/238:55 pm
EZE
- MDW
1 stop15h 59m
Delta
Deal found 2/2![Delta logo]()
$917
This LATAM Airlines deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/91:37 pm
ORD
- EZE
2 stops17h 38m
LATAM Airlines
Mon 3/167:04 pm
EZE
- ORD
2 stops16h 56m
LATAM Airlines
Deal found 2/4![LATAM Airlines logo]()
$917
This LATAM Airlines deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/1710:45 am
MDW
- AEP
2 stops19h 10m
LATAM Airlines
Tue 3/243:45 pm
AEP
- MDW
2 stops20h 11m
LATAM Airlines
Deal found 2/3![LATAM Airlines logo]()
$917
This KAYAK deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/261:37 pm
ORD
- AEP
2 stops23h 03m
LATAM Airlines
Thu 4/23:45 pm
AEP
- ORD
2 stops27h 25m
LATAM Airlines
Deal found 2/3![LATAM Airlines logo]()
$917
This Kiwi.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/49:23 am
ORD
- EZE
1 stop23h 12m
Multiple Airlines
Sat 2/71:40 am
EZE
- ORD
2 stops24h 04m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$918
Best flights from Chicago to Buenos AiresDiscover carefully curated flight deals from Chicago to Buenos Aires that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 4, 2026.
Discover carefully curated flight deals from Chicago to Buenos Aires that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 4, 2026.
This Mytrip deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/17:23 pm
ORD
- AEP
2 stops34h 07m
Multiple Airlines
Sun 3/152:30 pm
AEP
- ORD
2 stops32h 50m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$914
This Delta deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/910:45 am
MDW
- EZE
1 stop20h 15m
Delta
Tue 4/148:10 pm
EZE
- MDW
1 stop17h 57m
Delta
Deal found 2/2![Delta logo]()
$917
This LATAM Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/1612:45 pm
MDW
- EZE
1 stop17h 15m
LATAM Airlines
Mon 2/238:55 pm
EZE
- MDW
1 stop15h 59m
LATAM Airlines
Deal found 2/2![LATAM Airlines logo]()
$917
This United Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/168:53 am
ORD
- EZE
1 stop19h 27m
United Airlines
Mon 2/2311:55 pm
EZE
- ORD
1 stop17h 48m
United Airlines
Deal found 2/2![United Airlines logo]()
$917
This Ticket deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/710:20 pm
ORD
- EZE
1 stop23h 15m
Avianca
Mon 3/234:55 pm
EZE
- ORD
1 stop30h 25m
Avianca
Deal found 2/4![Avianca logo]()
$917
This Copa Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/88:02 am
ORD
- EZE
1 stop14h 50m
Copa Airlines
Mon 6/222:49 pm
EZE
- ORD
1 stop25h 17m
Copa Airlines
Deal found 2/2![Copa Airlines logo]()
$925
This Trip.com deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/2011:27 am
ORD
- EZE
1 stop14h 18m
Arajet
Sat 7/259:15 pm
EZE
- ORD
1 stop26h 55m
Arajet
Deal found 2/4![Arajet logo]()
$926
This Delta deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/1612:45 pm
MDW
- EZE
1 stop17h 15m
Delta
Mon 2/238:55 pm
EZE
- MDW
1 stop15h 59m
Delta
Deal found 2/2![Delta logo]()
$917
This KAYAK deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/295:53 pm
ORD
- EZE
1 stop13h 52m
LATAM Airlines
Wed 5/67:35 am
EZE
- ORD
2 stops18h 24m
LATAM Airlines
Deal found 2/3![LATAM Airlines logo]()
$917
This United Airlines deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/1710:35 am
ORD
- EZE
1 stop19h 45m
United Airlines
Thu 3/269:05 pm
EZE
- ORD
1 stop16h 05m
United Airlines
Deal found 2/1![United Airlines logo]()
$917
This Mytrip deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/175:15 am
ORD
- AEP
3 stops26h 15m
Multiple Airlines
Sun 6/215:10 pm
AEP
- ORD
2 stops32h 37m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$919
This Copa Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/68:02 am
ORD
- EZE
1 stop16h 28m
Copa Airlines
Fri 6/193:48 am
EZE
- ORD
1 stop23h 27m
Copa Airlines
Deal found 2/2![Copa Airlines logo]()
$925
This oojo deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/1911:20 pm
ORD
- AEP
1 stop28h 20m
Avianca
Mon 4/277:00 am
AEP
- ORD
1 stop16h 20m
Avianca
Deal found 2/2![Avianca logo]()
$947
This FlightHub deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/121:37 pm
ORD
- EZE
2 stops17h 38m
LATAM Airlines
Tue 3/248:00 am
EZE
- ORD
2 stops17h 54m
LATAM Airlines
Deal found 2/3![LATAM Airlines logo]()
$917
This Delta deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/171:10 pm
MDW
- EZE
2 stops17h 50m
Delta
Tue 3/248:55 pm
EZE
- MDW
2 stops17h 34m
Delta
Deal found 2/3![Delta logo]()
$921
This Mytrip deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/296:45 am
ORD
- AEP
2 stops26h 35m
Multiple Airlines
Sat 6/610:30 am
AEP
- ORD
3 stops39h 17m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$923
This oojo deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/3011:20 pm
ORD
- AEP
1 stop28h 20m
Avianca
Fri 4/37:00 am
AEP
- ORD
1 stop16h 20m
Avianca
Deal found 2/2![Avianca logo]()
$947
This LATAM Airlines deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/1710:45 am
MDW
- AEP
2 stops19h 10m
LATAM Airlines
Tue 3/243:45 pm
AEP
- MDW
2 stops20h 11m
LATAM Airlines
Deal found 2/3![LATAM Airlines logo]()
$917
This Delta deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/21:29 pm
MDW
- EZE
2 stops16h 31m
Delta
Mon 3/98:55 pm
EZE
- MDW
2 stops17h 34m
Delta
Deal found 2/2![Delta logo]()
$921
This Kiwi.com deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/157:05 am
ORD
- AEP
2 stops43h 15m
Multiple Airlines
Thu 9/1012:45 pm
AEP
- ORD
1 stop34h 35m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$933
This oojo deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/510:20 pm
ORD
- AEP
1 stop28h 20m
Avianca
Sun 3/157:00 am
AEP
- ORD
1 stop16h 20m
Avianca
Deal found 2/2![Avianca logo]()
$967
This KAYAK deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/155:21 pm
MDW
- AEP
2 stops19h 29m
LATAM Airlines
Wed 4/223:45 pm
AEP
- MDW
2 stops22h 22m
LATAM Airlines
Deal found 2/4![LATAM Airlines logo]()
$917
This Delta deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/151:23 pm
MDW
- EZE
2 stops18h 22m
Delta
Wed 4/228:10 pm
EZE
- MDW
2 stops18h 33m
Delta
Deal found 2/4![Delta logo]()
$921
This Mytrip deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/57:23 pm
ORD
- AEP
2 stops34h 07m
Multiple Airlines
Sun 3/155:15 am
AEP
- ORD
3 stops40h 36m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$936
This Avianca deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2911:20 pm
ORD
- AEP
1 stop28h 20m
Avianca
Sun 5/37:00 am
AEP
- ORD
1 stop16h 20m
Avianca
Deal found 2/2![Avianca logo]()
$970
This KAYAK deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/411:19 am
ORD
- AEP
2 stops18h 21m
LATAM Airlines
Mon 5/184:55 pm
AEP
- ORD
2 stops21h 26m
LATAM Airlines
Deal found 2/1![LATAM Airlines logo]()
$917
This Delta deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/31:29 pm
MDW
- EZE
2 stops16h 31m
Delta
Tue 3/108:55 pm
EZE
- MDW
2 stops17h 34m
Delta
Deal found 2/3![Delta logo]()
$921
This Mytrip deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/15:15 am
ORD
- AEP
3 stops36h 25m
Multiple Airlines
Wed 3/411:16 pm
AEP
- ORD
3 stops39h 06m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$978
This LATAM Airlines deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/310:49 am
MDW
- EZE
2 stops20h 26m
LATAM Airlines
Tue 3/108:55 pm
EZE
- MDW
1 stop15h 01m
LATAM Airlines
Deal found 2/3![LATAM Airlines logo]()
$921
This Delta deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/169:50 am
ORD
- EZE
2 stops21h 10m
Delta
Thu 3/267:10 am
EZE
- ORD
2 stops18h 44m
Delta
Deal found 2/1![Delta logo]()
$921
Last-minute flights from Chicago to Buenos AiresDiscover last-minute flight deals from Chicago to Buenos Aires. Data last updated February 4, 2026 and is based on user searches.
Discover last-minute flight deals from Chicago to Buenos Aires. Data last updated February 4, 2026 and is based on user searches.
This Mytrip deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/311:59 pm
ORD
- EZE
3 stops30h 41m
Multiple Airlines
Tue 2/107:45 pm
EZE
- ORD
2 stops27h 35m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$913
This Kiwi.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/49:23 am
ORD
- EZE
1 stop23h 12m
Multiple Airlines
Sat 2/71:40 am
EZE
- ORD
2 stops24h 04m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$918
This Kiwi.com deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/49:23 am
ORD
- EZE
1 stop23h 12m
Multiple Airlines
Sat 2/147:00 pm
EZE
- ORD
2 stops28h 20m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$920
This Delta deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/1612:45 pm
MDW
- EZE
1 stop17h 15m
Delta
Mon 2/238:55 pm
EZE
- MDW
1 stop15h 59m
Delta
Deal found 2/2![Delta logo]()
$917
This Delta deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/1610:35 am
ORD
- EZE
2 stops20h 40m
Delta
Mon 2/238:55 pm
EZE
- ORD
2 stops22h 46m
Delta
Deal found 2/2![Delta logo]()
$921
This Mytrip deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/17:23 pm
ORD
- AEP
2 stops34h 07m
Multiple Airlines
Tue 3/312:10 am
AEP
- ORD
2 stops23h 10m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$914
This Mytrip deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/57:23 pm
ORD
- AEP
2 stops31h 17m
Multiple Airlines
Sun 3/152:30 pm
AEP
- ORD
2 stops32h 50m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$911
This Mytrip deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/56:51 pm
ORD
- EZE
2 stops30h 44m
Multiple Airlines
Sun 3/83:55 pm
EZE
- ORD
3 stops29h 52m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$914
This Avianca deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/811:20 pm
ORD
- EZE
1 stop14h 30m
Avianca
Sun 3/157:30 am
EZE
- ORD
1 stop15h 50m
Avianca
Deal found 2/2![Avianca logo]()
$922
This LATAM Airlines deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/91:37 pm
ORD
- EZE
2 stops17h 38m
LATAM Airlines
Mon 3/167:04 pm
EZE
- ORD
2 stops16h 56m
LATAM Airlines
Deal found 2/4![LATAM Airlines logo]()
$917
This LATAM Airlines deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/1710:45 am
MDW
- AEP
2 stops19h 10m
LATAM Airlines
Tue 3/243:45 pm
AEP
- MDW
2 stops20h 11m
LATAM Airlines
Deal found 2/3![LATAM Airlines logo]()
$917
This KAYAK deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/261:37 pm
ORD
- AEP
2 stops23h 03m
LATAM Airlines
Thu 4/23:45 pm
AEP
- ORD
2 stops27h 25m
LATAM Airlines
Deal found 2/3![LATAM Airlines logo]()
$917
One-way flights from Chicago to Buenos AiresSearch for one-way flight options from Chicago to Buenos Aires. Find affordable one-way fares based on user searches. Data last updated February 4, 2026.
Search for one-way flight options from Chicago to Buenos Aires. Find affordable one-way fares based on user searches. Data last updated February 4, 2026.
This Kiwi.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/156:00 am
MDW
- AEP
2 stops24h 30m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$309
This Kiwi.com deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/57:23 pm
ORD
- EZE
3 stops44h 17m
Multiple Airlines
Deal found 2/4![Multiple Airlines logo]()
$322
This Kiwi.com deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/57:23 pm
ORD
- AEP
3 stops36h 57m
Multiple Airlines
Deal found 2/4![Multiple Airlines logo]()
$322
This Mytrip deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/25:05 am
ORD
- AEP
2 stops25h 25m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$338
This Kiwi.com deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/74:44 pm
ORD
- EZE
3 stops36h 11m
Multiple Airlines
Deal found 2/4![Multiple Airlines logo]()
$347
This Kiwi.com deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/26:40 am
ORD
- EZE
3 stops43h 20m
Multiple Airlines
Deal found 2/4![Multiple Airlines logo]()
$348
This Kiwi.com deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/157:17 am
ORD
- AEP
2 stops43h 03m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$350
This Kiwi.com deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/156:10 pm
ORD
- EZE
3 stops52h 20m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$351
This Kiwi.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/156:00 am
MDW
- EZE
3 stops43h 40m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$357
This Kiwi.com deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/191:37 pm
ORD
- EZE
3 stops29h 44m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$363
This Kiwi.com deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/36:02 pm
ORD
- EZE
3 stops34h 53m
Multiple Airlines
Deal found 2/4![Multiple Airlines logo]()
$367
This Kiwi.com deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/271:37 pm
ORD
- AEP
2 stops19h 43m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$367
Find flight deals from Chicago to Buenos Aires
Discover tips and strategies to find the most affordable flight options for your journey from Chicago (CHI) to Buenos Aires (BUE). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated February 4, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $910 (Mytrip) |
One-way from | $309 (Kiwi.com) |
Popular in | May |
Cheapest in | November |
Average price | $1,106 |
Cheapflights Fare Finder
Customize your flight search to find flights from Chicago to Buenos Aires that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 4, 2026.
Use the filters below to find and compare flights from Chicago to Buenos Aires that are best for you.
Fly from
Chicago
Fly to
Buenos Aires
Route
Depart
Return
Price
ChicagoBuenos Aires
ORD - AEP
ORDAEP
Chicago O'Hare Intl
Sun 3/1
7:23 pm-8:30 am
2 stops34h 07m
Buenos Aires Jorge Newbery
Sun 3/15
2:30 pm-9:20 pm
2 stops32h 50m
$914
ChicagoBuenos Aires
MDW - EZE
MDWEZE
Chicago Midway
Mon 3/9
10:45 am-9:00 am
1 stop20h 15m
Buenos Aires Ministro Pistarini
Tue 4/14
8:10 pm-12:07 pm
1 stop17h 57m
$917
ChicagoBuenos Aires
MDW - EZE
MDWEZE
Chicago Midway
Mon 2/16
12:45 pm-9:00 am
1 stop17h 15m
Buenos Aires Ministro Pistarini
Mon 2/23
8:55 pm-9:54 am
1 stop15h 59m
$917
ChicagoBuenos Aires
ORD - EZE
ORDEZE
Chicago O'Hare Intl
Mon 2/16
8:53 am-7:20 am
1 stop19h 27m
Buenos Aires Ministro Pistarini
Mon 2/23
11:55 pm-2:43 pm
1 stop17h 48m
$917
ChicagoBuenos Aires
ORD - EZE
ORDEZE
Chicago O'Hare Intl
Sat 3/7
10:20 pm-12:35 am
1 stop23h 15m
Buenos Aires Ministro Pistarini
Mon 3/23
4:55 pm-9:20 pm
1 stop30h 25m
$917
ChicagoBuenos Aires
MDW - EZE
MDWEZE
Chicago Midway
Mon 2/16
12:45 pm-9:00 am
1 stop17h 15m
Buenos Aires Ministro Pistarini
Mon 2/23
8:55 pm-9:54 am
1 stop15h 59m
$917
ChicagoBuenos Aires
ORD - EZE
ORDEZE
Chicago O'Hare Intl
Wed 4/29
5:53 pm-9:45 am
1 stop13h 52m
Buenos Aires Ministro Pistarini
Wed 5/6
7:35 am-11:59 pm
2 stops18h 24m
$917
ChicagoBuenos Aires
ORD - EZE
ORDEZE
Chicago O'Hare Intl
Tue 3/17
10:35 am-8:20 am
1 stop19h 45m
Buenos Aires Ministro Pistarini
Thu 3/26
9:05 pm-11:10 am
1 stop16h 05m
$917
ChicagoBuenos Aires
ORD - EZE
ORDEZE
Chicago O'Hare Intl
Thu 3/12
1:37 pm-9:15 am
2 stops17h 38m
Buenos Aires Ministro Pistarini
Tue 3/24
8:00 am-11:54 pm
2 stops17h 54m
$917
ChicagoBuenos Aires
MDW - AEP
MDWAEP
Chicago Midway
Tue 3/17
10:45 am-7:55 am
2 stops19h 10m
Buenos Aires Jorge Newbery
Tue 3/24
3:45 pm-9:56 am
2 stops20h 11m
$917
Showing 1-10 of 60 results
Compare providers for flights from Chicago to Buenos Aires
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Chicago to Buenos Aires in February.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*2 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*1 star |
- Most accurate provider: When it comes to deals on Chicago-Buenos Aires flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Chicago-Buenos Aires flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Chicago-Buenos Aires flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Chicago-Buenos Aires flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Chicago-Buenos Aires flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Chicago to Buenos Aires
Have a flexible travel schedule? Discover the best time to fly to Buenos Aires from Chicago with our price prediction graph.
CHI-BUE
MDW-AEP
ORD-EZE
MDW-EZE
ORD-AEP
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Chicago to Buenos Aires
CHI-BUE
MDW-AEP
ORD-EZE
MDW-EZE
ORD-AEP
How far ahead should I book a flight from Chicago to Buenos Aires?
Use this chart to determine the optimal time to book a round-trip flight from Chicago to Buenos Aires. Price data was last updated on January 30, 2026.
The best time to book flights from Chicago to Buenos Aires is 34 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest month to book a flight from Chicago to Buenos Aires?
Currently, October is the cheapest month in which you can book a flight from Chicago to Buenos Aires (average of $381). Flying from Chicago to Buenos Aires in June is currently the most expensive (average of $1,144). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
How much does it cost to fly round-trip from Chicago to Buenos Aires?
Reviews of airlines servicing Buenos Aires
Get insights into the airlines that provide service to Buenos Aires. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Buenos Aires. Reviews last updated February 4, 2026.
Peruse reviews from past customers who have flown with Delta, Copa Airlines, and United Airlines from Chicago to Buenos Aires to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
7.9
Crew
8.5
Food
7.2
Comfort
7.9
Boarding
8.1
Entertainment
7.8
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Overall
7.9
Crew
8.5
Food
7.2
Comfort
7.9
Boarding
8.1
Entertainment
7.8
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Overall
7.9
Crew
8.5
Food
7.2
Comfort
7.9
Boarding
8.1
Entertainment
7.8
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Overall
7.9
Crew
8.5
Food
7.2
Comfort
7.9
Boarding
8.1
Entertainment
7.8
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Overall
7.9
Crew
8.5
Food
7.2
Comfort
7.9
Boarding
8.1
Entertainment
7.8
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Overall
7.9
Crew
8.5
Food
7.2
Comfort
7.9
Boarding
8.1
Entertainment
7.8
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Related info for your journey
Find useful and relevant information for your journey from Chicago to Buenos Aires. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Buenos Aires flight routes
Complete your trip
Flights by cabin class
Other flight options
Other flights from Chicago
Popular flights
Alternative routes for Chicago to Buenos Aires
See prices for flight routes from nearby airports that may be better suited for you.
Other flights to Buenos Aires
Explore flights to Buenos Aires departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on February 4, 2026.
Complete your trip
Complete your trip to Buenos Aires by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Chicago to Buenos Aires by cabin class
Find flights from Chicago to Buenos Aires, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Chicago and Buenos Aires flights
Browse other Chicago and Buenos Aires flight options. Last updated on February 4, 2026.
Other flights from Chicago
Browse through other flights departing from Chicago. Flights are based on user searches made on Cheapflights and were last updated on February 4, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 6 airlines flying from Chicago to Buenos Aires
Discover the top 6 airlines that operate flights from Chicago to Buenos Aires. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 4, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$360 | Average$878 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$569 | Average$966 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$726 | Average$990 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$951 | Average$1,239 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$951 | Average$1,167 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$1,015 | Average$1,260 | FlexibilityNo cancel fee | On-time71% |