$334+ 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 8/24. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — BUE
Jul 9 — Jul 161
Round-trip
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 June 9, 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 June 9, 2026.
This Booking.com deal was found by Cheapflights users on 6/4. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/195:30 am
ORD
- EZE
1 stop16h 35m
Arajet
Sun 10/258:40 am
EZE
- ORD
1 stop15h 30m
Arajet
Deal found 6/4![Arajet logo]()
$785
This Arajet deal was found by Cheapflights users on 6/7. 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 Arajet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/195:30 am
ORD
- EZE
1 stop16h 35m
Arajet
Thu 10/297:10 am
EZE
- ORD
1 stop18h 30m
Arajet
Deal found 6/7![Arajet logo]()
$808
This Arajet deal was found by Cheapflights users on 6/7. 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 Arajet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/195:30 am
ORD
- EZE
1 stop16h 35m
Arajet
Sat 10/249:15 pm
EZE
- ORD
1 stop26h 55m
Arajet
Deal found 6/7![Arajet logo]()
$816
This Kiwi.com deal was found by Cheapflights users on 6/4. 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.
Mon 9/215:30 am
ORD
- EZE
1 stop16h 35m
Arajet
Thu 10/1511:00 am
EZE
- ORD
1 stop14h 40m
Arajet
Deal found 6/4![Arajet logo]()
$821
This Arajet deal was found by Cheapflights users on 6/4. 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 Arajet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2212:12 pm
ORD
- EZE
1 stop13h 58m
Arajet
Wed 9/22:45 am
EZE
- ORD
1 stop22h 55m
Arajet
Deal found 6/4![Arajet logo]()
$823
This Arajet deal was found by Cheapflights users on 6/4. 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 Arajet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/215:30 am
ORD
- EZE
1 stop16h 35m
Arajet
Wed 10/149:15 pm
EZE
- ORD
1 stop28h 25m
Arajet
Deal found 6/4![Arajet logo]()
$824
This LATAM Airlines deal was found by Cheapflights users on 6/7. 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.
Sun 11/151:05 pm
MDW
- EZE
1 stop15h 30m
LATAM Airlines
Wed 11/183:35 pm
EZE
- MDW
2 stops21h 17m
LATAM Airlines
Deal found 6/7![LATAM Airlines logo]()
$825
This LATAM Airlines deal was found by Cheapflights users on 6/7. 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.
Sun 11/159:30 am
ORD
- EZE
2 stops17h 35m
LATAM Airlines
Wed 11/183:35 pm
EZE
- ORD
2 stops19h 59m
LATAM Airlines
Deal found 6/7![LATAM Airlines logo]()
$825
This LATAM Airlines deal was found by Cheapflights users on 6/7. 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.
Sun 11/1510:35 am
MDW
- AEP
2 stops18h 05m
LATAM Airlines
Wed 11/182:55 pm
AEP
- MDW
2 stops21h 57m
LATAM Airlines
Deal found 6/7![LATAM Airlines logo]()
$825
This LATAM Airlines deal was found by Cheapflights users on 6/7. 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.
Sun 11/155:55 pm
ORD
- AEP
2 stops19h 05m
LATAM Airlines
Wed 11/182:55 pm
AEP
- ORD
2 stops22h 12m
LATAM Airlines
Deal found 6/7![LATAM Airlines logo]()
$825
This Booking.com deal was found by Cheapflights users on 6/5. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/175:30 am
ORD
- EZE
1 stop16h 35m
Arajet
Sat 8/229:15 pm
EZE
- ORD
1 stop26h 55m
Arajet
Deal found 6/5![Arajet logo]()
$831
This Kiwi.com deal was found by Cheapflights users on 6/6. 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.
Mon 9/215:30 am
ORD
- EZE
1 stop16h 35m
Arajet
Fri 10/169:15 pm
EZE
- ORD
1 stop15h 57m
Arajet
Deal found 6/6![Arajet logo]()
$836
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 June 9, 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 June 9, 2026.
This Arajet deal was found by Cheapflights users on 6/6. 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 Arajet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/256:45 am
ORD
- EZE
1 stop22h 45m
Arajet
Wed 10/149:15 pm
EZE
- ORD
1 stop28h 25m
Arajet
Deal found 6/6![Arajet logo]()
$841
This Copa Airlines deal was found by Cheapflights users on 6/5. 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.
Wed 7/18:02 am
ORD
- EZE
1 stop14h 50m
Copa Airlines
Tue 7/2812:50 am
EZE
- ORD
1 stop29h 10m
Copa Airlines
Deal found 6/5![Copa Airlines logo]()
$946
This Mytrip deal was found by Cheapflights users on 6/5. 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 6/301:40 am
ORD
- AEP
3 stops26h 00m
Multiple Airlines
Wed 7/2912:13 pm
AEP
- ORD
2 stops35h 07m
Multiple Airlines
Deal found 6/5![Multiple Airlines logo]()
$1,068
This Delta deal was found by Cheapflights users on 6/7. 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 10/1910:35 am
MDW
- EZE
2 stops17h 35m
Delta
Fri 10/238:10 pm
EZE
- MDW
1 stop17h 46m
Delta
Deal found 6/7![Delta logo]()
$1,104
This LATAM Airlines deal was found by Cheapflights users on 6/5. 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 8/1710:54 am
MDW
- AEP
2 stops18h 46m
LATAM Airlines
Sat 8/225:35 pm
AEP
- MDW
2 stops20h 16m
LATAM Airlines
Deal found 6/5![LATAM Airlines logo]()
$1,104
This Avianca deal was found by Cheapflights users on 6/6. 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.
Sat 9/2611:20 pm
ORD
- AEP
1 stop28h 20m
Avianca
Fri 10/167:00 am
AEP
- ORD
1 stop16h 20m
Avianca
Deal found 6/6![Avianca logo]()
$1,187
This Arajet deal was found by Cheapflights users on 6/4. 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 Arajet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/175:30 am
ORD
- EZE
1 stop16h 35m
Arajet
Wed 12/169:15 pm
EZE
- ORD
1 stop28h 25m
Arajet
Deal found 6/4![Arajet logo]()
$856
This Arajet deal was found by Cheapflights users on 6/7. 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 Arajet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/135:45 am
ORD
- EZE
1 stop24h 31m
Arajet
Sun 11/228:40 am
EZE
- ORD
1 stop15h 40m
Arajet
Deal found 6/7![Arajet logo]()
$917
This Mytrip deal was found by Cheapflights users on 6/5. 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 9/191:40 am
ORD
- AEP
3 stops26h 00m
Multiple Airlines
Sat 10/39:13 pm
AEP
- ORD
2 stops26h 57m
Multiple Airlines
Deal found 6/5![Multiple Airlines logo]()
$1,083
This Copa Airlines deal was found by Cheapflights users on 6/4. 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 Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/177:35 am
ORD
- EZE
1 stop14h 12m
Copa Airlines
Mon 12/72:34 pm
EZE
- ORD
1 stop25h 12m
Copa Airlines
Deal found 6/4![Copa Airlines logo]()
$1,092
This Delta deal was found by Cheapflights users on 6/7. 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 9/910:35 am
MDW
- EZE
1 stop21h 10m
Delta
Sun 9/137:35 am
EZE
- MDW
2 stops34h 36m
Delta
Deal found 6/7![Delta logo]()
$1,104
This LATAM Airlines deal was found by Cheapflights users on 6/4. 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.
Wed 11/1110:35 am
MDW
- AEP
2 stops18h 05m
LATAM Airlines
Tue 11/245:05 pm
AEP
- MDW
2 stops21h 51m
LATAM Airlines
Deal found 6/4![LATAM Airlines logo]()
$1,104
This Copa Airlines deal was found by Cheapflights users on 6/8. 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.
Wed 9/98:01 am
ORD
- EZE
1 stop18h 20m
Copa Airlines
Mon 9/215:25 am
EZE
- ORD
1 stop21h 37m
Copa Airlines
Deal found 6/8![Copa Airlines logo]()
$1,092
This Delta deal was found by Cheapflights users on 6/5. 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 9/221:00 pm
MDW
- EZE
1 stop18h 45m
Delta
Tue 10/138:10 pm
EZE
- MDW
1 stop15h 42m
Delta
Deal found 6/5![Delta logo]()
$1,104
This Mytrip deal was found by Cheapflights users on 6/4. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/219:50 am
ORD
- AEP
2 stops29h 40m
Multiple Airlines
Wed 12/25:05 pm
AEP
- ORD
2 stops32h 01m
Multiple Airlines
Deal found 6/4![Multiple Airlines logo]()
$1,113
This Copa Airlines deal was found by Cheapflights users on 6/6. 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.
Sun 8/163:21 pm
ORD
- EZE
1 stop29h 05m
Copa Airlines
Thu 8/273:48 am
EZE
- ORD
1 stop23h 14m
Copa Airlines
Deal found 6/6![Copa Airlines logo]()
$1,092
This FlightHub deal was found by Cheapflights users on 6/4. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2210:48 am
MDW
- AEP
2 stops19h 42m
LATAM Airlines
Sat 10/33:45 pm
AEP
- MDW
2 stops20h 08m
LATAM Airlines
Deal found 6/4![LATAM Airlines logo]()
$1,203
This Delta deal was found by Cheapflights users on 6/4. 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 11/1110:35 am
MDW
- EZE
2 stops16h 30m
Delta
Tue 11/249:30 pm
EZE
- MDW
1 stop17h 26m
Delta
Deal found 6/4![Delta logo]()
$1,104
This Copa Airlines deal was found by Cheapflights users on 6/7. 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 8/103:21 pm
ORD
- EZE
1 stop29h 05m
Copa Airlines
Mon 8/178:59 am
EZE
- ORD
1 stop31h 00m
Copa Airlines
Deal found 6/7![Copa Airlines logo]()
$1,092
This Mytrip deal was found by Cheapflights users on 6/6. 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 8/43:45 pm
ORD
- AEP
3 stops35h 55m
Multiple Airlines
Mon 8/103:54 pm
AEP
- ORD
3 stops31h 26m
Multiple Airlines
Deal found 6/6![Multiple Airlines logo]()
$1,204
This Delta deal was found by Cheapflights users on 6/4. 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.
Sun 7/195:10 pm
MDW
- EZE
1 stop14h 35m
Delta
Sun 7/268:10 pm
EZE
- MDW
1 stop22h 05m
Delta
Deal found 6/4![Delta logo]()
$1,104
This LATAM Airlines deal was found by Cheapflights users on 6/7. 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.
Wed 9/2310:48 am
MDW
- AEP
2 stops18h 52m
LATAM Airlines
Wed 10/148:05 pm
AEP
- MDW
2 stops17h 51m
LATAM Airlines
Deal found 6/7![LATAM Airlines logo]()
$1,286
This Delta deal was found by Cheapflights users on 6/6. 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 9/215:10 pm
MDW
- EZE
1 stop14h 35m
Delta
Fri 10/168:10 pm
EZE
- MDW
1 stop15h 42m
Delta
Deal found 6/6![Delta logo]()
$1,104
This Avianca deal was found by Cheapflights users on 6/4. 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/910:50 am
ORD
- AEP
2 stops16h 50m
Multiple Airlines
Mon 9/217:00 am
AEP
- ORD
1 stop16h 20m
Multiple Airlines
Deal found 6/4![Multiple Airlines logo]()
$1,234
This Delta deal was found by Cheapflights users on 6/6. 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 9/215:10 pm
MDW
- EZE
1 stop14h 35m
Delta
Tue 10/138:10 pm
EZE
- MDW
1 stop15h 42m
Delta
Deal found 6/6![Delta logo]()
$1,104
This Delta deal was found by Cheapflights users on 6/7. 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 9/910:35 am
MDW
- AEP
2 stops27h 25m
Delta
Sun 9/138:05 pm
AEP
- MDW
2 stops22h 06m
Delta
Deal found 6/7![Delta logo]()
$1,104
This Delta deal was found by Cheapflights users on 6/6. 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.
Sun 8/1610:54 am
MDW
- AEP
2 stops18h 46m
Delta
Fri 8/288:05 pm
AEP
- MDW
2 stops21h 33m
Delta
Deal found 6/6![Delta logo]()
$1,104
This Delta deal was found by Cheapflights users on 6/7. 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.
Sun 9/64:39 pm
MDW
- AEP
2 stops20h 11m
Delta
Sun 9/138:05 pm
AEP
- MDW
2 stops22h 06m
Delta
Deal found 6/7![Delta logo]()
$1,104
This Delta deal was found by Cheapflights users on 6/5. 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 8/2410:54 am
MDW
- AEP
2 stops18h 46m
Delta
Tue 9/13:45 pm
AEP
- MDW
2 stops20h 14m
Delta
Deal found 6/5![Delta logo]()
$1,104
This Delta deal was found by Cheapflights users on 6/7. 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 10/145:25 pm
MDW
- AEP
2 stops20h 35m
Delta
Mon 10/265:05 pm
AEP
- MDW
2 stops20h 51m
Delta
Deal found 6/7![Delta logo]()
$1,104
Last-minute flights from Chicago to Buenos AiresDiscover last-minute flight deals from Chicago to Buenos Aires. Data last updated June 9, 2026 and is based on user searches.
Discover last-minute flight deals from Chicago to Buenos Aires. Data last updated June 9, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 6/4. 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.
Mon 6/84:30 am
ORD
- EZE
1 stop13h 45m
Multiple Airlines
Wed 6/105:50 pm
EZE
- ORD
2 stops42h 23m
Multiple Airlines
Deal found 6/4![Multiple Airlines logo]()
$945
This LATAM Airlines deal was found by Cheapflights users on 6/4. 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 6/811:23 am
ORD
- AEP
2 stops19h 07m
LATAM Airlines
Tue 6/92:55 pm
AEP
- ORD
2 stops19h 43m
LATAM Airlines
Deal found 6/4![LATAM Airlines logo]()
$949
This KAYAK deal was found by Cheapflights users on 6/3. 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.
Mon 6/227:30 am
ORD
- EZE
1 stop22h 30m
Copa Airlines
Mon 6/299:00 pm
EZE
- ORD
1 stop17h 29m
Copa Airlines
Deal found 6/3![Copa Airlines logo]()
$957
This United Airlines deal was found by Cheapflights users on 6/4. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/2212:40 pm
ORD
- EZE
1 stop17h 20m
United Airlines
Mon 6/299:00 pm
EZE
- ORD
1 stop25h 05m
United Airlines
Deal found 6/4![United Airlines logo]()
$958
This Expedia deal was found by Cheapflights users on 6/4. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/224:30 am
ORD
- EZE
1 stop13h 45m
Multiple Airlines
Sun 6/283:55 am
EZE
- ORD
2 stops22h 04m
Multiple Airlines
Deal found 6/4![Multiple Airlines logo]()
$966
This Booking.com deal was found by Cheapflights users on 6/4. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/2712:12 pm
ORD
- EZE
1 stop13h 58m
Arajet
Thu 7/27:45 am
EZE
- ORD
1 stop17h 55m
Arajet
Deal found 6/4![Arajet logo]()
$864
This Copa Airlines deal was found by Cheapflights users on 6/5. 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.
Wed 7/18:02 am
ORD
- EZE
1 stop14h 50m
Copa Airlines
Tue 7/2812:50 am
EZE
- ORD
1 stop29h 10m
Copa Airlines
Deal found 6/5![Copa Airlines logo]()
$946
This Orbitz deal was found by Cheapflights users on 6/4. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/412:12 pm
ORD
- EZE
1 stop13h 58m
Multiple Airlines
Sat 7/118:10 pm
EZE
- ORD
1 stop24h 35m
Multiple Airlines
Deal found 6/4![Multiple Airlines logo]()
$941
This American Airlines deal was found by Cheapflights users on 6/4. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/142:54 pm
ORD
- EZE
2 stops15h 56m
American Airlines
Mon 9/711:35 pm
EZE
- ORD
1 stop22h 28m
American Airlines
Deal found 6/4![American Airlines logo]()
$962
This Mytrip deal was found by Cheapflights users on 6/4. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/172:53 am
ORD
- EZE
3 stops34h 47m
Multiple Airlines
Sun 8/212:15 pm
EZE
- ORD
2 stops35h 05m
Multiple Airlines
Deal found 6/4![Multiple Airlines logo]()
$972
This United Airlines deal was found by Cheapflights users on 6/4. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/1910:25 am
ORD
- EZE
1 stop19h 35m
United Airlines
Sun 7/269:00 pm
EZE
- ORD
1 stop36h 59m
United Airlines
Deal found 6/4![United Airlines logo]()
$968
This Kiwi.com deal was found by Cheapflights users on 6/4. 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.
Mon 7/275:30 am
ORD
- EZE
1 stop16h 35m
Arajet
Thu 8/139:45 am
EZE
- ORD
1 stop15h 55m
Arajet
Deal found 6/4![Arajet logo]()
$970
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 June 9, 2026.
Search for one-way flight options from Chicago to Buenos Aires. Find affordable one-way fares based on user searches. Data last updated June 9, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/6. 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.
Mon 8/241:40 am
ORD
- EZE
3 stops23h 20m
Multiple Airlines
Deal found 6/6![Multiple Airlines logo]()
$334
This Kiwi.com deal was found by Cheapflights users on 6/6. 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 9/15:30 pm
ORD
- AEP
3 stops46h 50m
Multiple Airlines
Deal found 6/6![Multiple Airlines logo]()
$334
This Kiwi.com deal was found by Cheapflights users on 6/6. 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.
Mon 8/177:05 am
ORD
- EZE
3 stops42h 40m
Multiple Airlines
Deal found 6/6![Multiple Airlines logo]()
$335
This Kiwi.com deal was found by Cheapflights users on 6/6. 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.
Mon 8/246:55 am
ORD
- EZE
3 stops23h 20m
Multiple Airlines
Deal found 6/6![Multiple Airlines logo]()
$341
This Arajet deal was found by Cheapflights users on 6/8. 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 Arajet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/285:30 am
ORD
- EZE
1 stop24h 45m
Arajet
Deal found 6/8![Arajet logo]()
$342
This Kiwi.com deal was found by Cheapflights users on 6/6. 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.
Mon 8/315:30 am
ORD
- EZE
1 stop16h 35m
Arajet
Deal found 6/6![Arajet logo]()
$343
This Kiwi.com deal was found by Cheapflights users on 6/6. 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.
Mon 8/1711:06 am
MDW
- EZE
3 stops38h 39m
Multiple Airlines
Deal found 6/6![Multiple Airlines logo]()
$345
This Arajet deal was found by Cheapflights users on 6/6. 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 Arajet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/216:45 am
ORD
- EZE
1 stop22h 45m
Arajet
Deal found 6/6![Arajet logo]()
$350
This Kiwi.com deal was found by Cheapflights users on 6/6. 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 9/35:30 pm
ORD
- AEP
3 stops39h 50m
Multiple Airlines
Deal found 6/6![Multiple Airlines logo]()
$356
This Kiwi.com deal was found by Cheapflights users on 6/6. 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 8/2212:12 pm
ORD
- EZE
1 stop13h 58m
Arajet
Deal found 6/6![Arajet logo]()
$357
This Kiwi.com deal was found by Cheapflights users on 6/7. 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 10/2412:12 pm
ORD
- EZE
1 stop13h 58m
Arajet
Deal found 6/7![Arajet logo]()
$364
This Kiwi.com deal was found by Cheapflights users on 6/6. 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 8/229:48 pm
ORD
- EZE
3 stops56h 27m
Multiple Airlines
Deal found 6/6![Multiple Airlines logo]()
$370
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 June 9, 2026.
Most accurate provider | Ovago 3 stars |
|---|---|
Most trusted provider | Ovago 3 stars |
Round-trip from | $785 (Booking.com) |
One-way from | $334 (Kiwi.com) |
Popular in | September |
Cheapest in | April |
Average price | $985 |
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 June 9, 2026.
Use the filters below to find and compare flights from Chicago to Buenos Aires that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
ChicagoBuenos Aires
ORD - EZE
ORDEZE
Chicago O'Hare Intl
Fri 9/25
6:45 am-7:30 am
1 stop22h 45m
Buenos Aires Ministro Pistarini
Wed 10/14
9:15 pm-11:40 pm
1 stop28h 25m
$841
ChicagoBuenos Aires
ORD - EZE
ORDEZE
Chicago O'Hare Intl
Mon 8/17
5:30 am-12:05 am
1 stop16h 35m
Buenos Aires Ministro Pistarini
Wed 12/16
9:15 pm-10:40 pm
1 stop28h 25m
$856
ChicagoBuenos Aires
ORD - EZE
ORDEZE
Chicago O'Hare Intl
Fri 11/13
5:45 am-9:16 am
1 stop24h 31m
Buenos Aires Ministro Pistarini
Sun 11/22
8:40 am-9:20 pm
1 stop15h 40m
$917
ChicagoBuenos Aires
ORD - EZE
ORDEZE
Chicago O'Hare Intl
Wed 7/1
8:02 am-12:52 am
1 stop14h 50m
Buenos Aires Ministro Pistarini
Tue 7/28
12:50 am-4:00 am
1 stop29h 10m
$946
ChicagoBuenos Aires
ORD - AEP
ORDAEP
Chicago O'Hare Intl
Tue 6/30
1:40 am-5:40 am
3 stops26h 00m
Buenos Aires Jorge Newbery
Wed 7/29
12:13 pm-9:20 pm
2 stops35h 07m
$1,068
ChicagoBuenos Aires
ORD - AEP
ORDAEP
Chicago O'Hare Intl
Sat 9/19
1:40 am-5:40 am
3 stops26h 00m
Buenos Aires Jorge Newbery
Sat 10/3
9:13 pm-10:10 pm
2 stops26h 57m
$1,083
ChicagoBuenos Aires
ORD - EZE
ORDEZE
Chicago O'Hare Intl
Tue 11/17
7:35 am-12:47 am
1 stop14h 12m
Buenos Aires Ministro Pistarini
Mon 12/7
2:34 pm-12:46 pm
1 stop25h 12m
$1,092
ChicagoBuenos Aires
ORD - EZE
ORDEZE
Chicago O'Hare Intl
Wed 9/9
8:01 am-4:21 am
1 stop18h 20m
Buenos Aires Ministro Pistarini
Mon 9/21
5:25 am-1:02 am
1 stop21h 37m
$1,092
ChicagoBuenos Aires
ORD - EZE
ORDEZE
Chicago O'Hare Intl
Sun 8/16
3:21 pm-10:26 pm
1 stop29h 05m
Buenos Aires Ministro Pistarini
Thu 8/27
3:48 am-1:02 am
1 stop23h 14m
$1,092
ChicagoBuenos Aires
ORD - EZE
ORDEZE
Chicago O'Hare Intl
Mon 8/10
3:21 pm-10:26 pm
1 stop29h 05m
Buenos Aires Ministro Pistarini
Mon 8/17
8:59 am-1:59 pm
1 stop31h 00m
$1,092
Showing 1-10 of 60 resultsSorted by cheapest first
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 June.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Chicago-Buenos Aires flights, users find the pricing of Ovago to be most consistent on Cheapflights vs. Ovago Users can find the same prices on Chicago-Buenos Aires flight deals on Cheapflights vs. Ovago >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 Ovago the most. Ovago 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
ORD-EZE
ORD-AEP
MDW-EZE
MDW-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
ORD-EZE
ORD-AEP
MDW-EZE
MDW-AEP
What is the cheapest month to book a flight from Chicago to Buenos Aires?
Currently, March is the cheapest month in which you can book a flight from Chicago to Buenos Aires (average of $134). Flying from Chicago to Buenos Aires in April is currently the most expensive (average of $746). 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?
How far ahead should I book a flight from Chicago to Buenos Aires?
The best time to book flights from Chicago to Buenos Aires is 25 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.
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 June 9, 2026.
Peruse reviews from past customers who have flown with Delta,Copa Airlines, andLATAM 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.
Entertainment
7.8
Overall
7.9
Boarding
8.1
Food
7.2
Comfort
7.8
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Entertainment
7.8
Overall
7.9
Boarding
8.1
Food
7.2
Comfort
7.8
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Entertainment
7.8
Overall
7.9
Boarding
8.1
Food
7.2
Comfort
7.8
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Entertainment
7.8
Overall
7.9
Boarding
8.1
Food
7.2
Comfort
7.8
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Entertainment
7.8
Overall
7.9
Boarding
8.1
Food
7.2
Comfort
7.8
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
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
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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 June 9, 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 June 9, 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 June 9, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 7 airlines flying from Chicago to Buenos Aires
Discover the top 7 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 June 9, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$360 | Average$892 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$569 | Average$985 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$727 | Average$918 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$795 | Average$999 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$901 | Average$1,496 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$951 | Average$1,155 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$972 | Average$1,284 | FlexibilityNo cancel fee | On-time71% |