$267+ 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 9/28. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — BUE
Aug 21 — Aug 281
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 July 22, 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 July 22, 2026.
This Expedia deal was found by Cheapflights users on 7/21. 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 9/145:30 am
ORD
- EZE
1 stop16h 35m
Arajet
Thu 9/249:45 am
EZE
- ORD
1 stop15h 55m
Arajet
Deal found 7/21![Arajet logo]()
$566
This Booking.com deal was found by Cheapflights users on 7/19. 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 9/75:30 am
ORD
- EZE
1 stop16h 35m
Arajet
Sat 9/192:45 am
EZE
- ORD
1 stop21h 25m
Arajet
Deal found 7/19![Arajet logo]()
$586
This Kiwi.com deal was found by Cheapflights users on 7/21. 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 8/2412:44 am
ORD
- EZE
2 stops25h 01m
Multiple Airlines
Sun 8/308:40 am
EZE
- ORD
1 stop15h 30m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$588
This Kiwi.com deal was found by Cheapflights users on 7/21. 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
Sun 8/308:40 am
EZE
- ORD
1 stop15h 30m
Arajet
Deal found 7/21![Arajet logo]()
$596
This Kiwi.com deal was found by Cheapflights users on 7/18. 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 9/75:30 am
ORD
- EZE
1 stop16h 35m
Arajet
Fri 9/119:15 pm
EZE
- ORD
1 stop15h 57m
Arajet
Deal found 7/18![Arajet logo]()
$602
This Trip.com deal was found by Cheapflights users on 7/20. 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.
Mon 9/75:30 am
ORD
- EZE
1 stop16h 35m
Multiple Airlines
Sun 9/207:21 pm
EZE
- ORD
2 stops31h 41m
Multiple Airlines
Deal found 7/20![Multiple Airlines logo]()
$660
This Kiwi.com deal was found by Cheapflights users on 7/21. 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
Thu 9/39:45 am
EZE
- ORD
1 stop15h 55m
Arajet
Deal found 7/21![Arajet logo]()
$671
This Kiwi.com deal was found by Cheapflights users on 7/18. 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 9/75:30 am
ORD
- EZE
1 stop16h 35m
Arajet
Thu 9/179:45 am
EZE
- ORD
1 stop15h 55m
Arajet
Deal found 7/18![Arajet logo]()
$674
This Expedia deal was found by Cheapflights users on 7/17. 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.
Sat 8/1512:12 pm
ORD
- EZE
1 stop13h 58m
Arajet
Sat 8/292:45 am
EZE
- ORD
1 stop21h 25m
Arajet
Deal found 7/17![Arajet logo]()
$676
This Kiwi.com deal was found by Cheapflights users on 7/21. 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 8/1512:12 pm
ORD
- EZE
1 stop13h 58m
Arajet
Sun 8/238:40 am
EZE
- ORD
1 stop15h 30m
Arajet
Deal found 7/21![Arajet logo]()
$692
This Kiwi.com deal was found by Cheapflights users on 7/21. 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 8/2412:44 am
ORD
- EZE
2 stops25h 01m
Multiple Airlines
Fri 8/289:15 pm
EZE
- ORD
1 stop15h 57m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$694
This Mytrip deal was found by Cheapflights users on 7/21. 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.
Mon 9/215:30 am
ORD
- AEP
2 stops25h 01m
Multiple Airlines
Mon 9/289:30 pm
AEP
- ORD
2 stops25h 50m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$779
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 July 22, 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 July 22, 2026.
This Delta deal was found by Cheapflights users on 7/20. 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.
Thu 8/1312:46 pm
MDW
- EZE
1 stop18h 59m
Delta
Wed 8/198:10 pm
EZE
- MDW
1 stop17h 41m
Delta
Deal found 7/20![Delta logo]()
$908
This United Airlines deal was found by Cheapflights users on 7/17. 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.
Fri 8/217:30 am
ORD
- EZE
1 stop22h 30m
United Airlines
Fri 8/289:00 pm
EZE
- ORD
1 stop15h 15m
United Airlines
Deal found 7/17![United Airlines logo]()
$908
This Mytrip deal was found by Cheapflights users on 7/17. 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 8/182:15 pm
ORD
- EZE
3 stops31h 50m
Multiple Airlines
Tue 9/112:15 pm
EZE
- ORD
2 stops35h 05m
Multiple Airlines
Deal found 7/17![Multiple Airlines logo]()
$919
This Copa Airlines deal was found by Cheapflights users on 7/20. 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 8/188:02 am
ORD
- EZE
1 stop21h 55m
Copa Airlines
Tue 9/12:49 pm
EZE
- ORD
1 stop25h 10m
Copa Airlines
Deal found 7/20![Copa Airlines logo]()
$921
This LATAM Airlines deal was found by Cheapflights users on 7/19. 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 9/216:05 am
MDW
- AEP
2 stops24h 25m
LATAM Airlines
Wed 9/239:25 am
AEP
- MDW
2 stops28h 29m
LATAM Airlines
Deal found 7/19![LATAM Airlines logo]()
$958
This Avianca deal was found by Cheapflights users on 7/21. 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 8/2211:20 pm
ORD
- AEP
1 stop28h 20m
Avianca
Fri 8/287:00 am
AEP
- ORD
1 stop16h 20m
Avianca
Deal found 7/21![Avianca logo]()
$1,157
This United Airlines deal was found by Cheapflights users on 7/21. 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 8/246:30 am
ORD
- EZE
1 stop23h 30m
United Airlines
Wed 8/269:00 pm
EZE
- ORD
1 stop23h 30m
United Airlines
Deal found 7/21![United Airlines logo]()
$908
This Delta deal was found by Cheapflights users on 7/19. 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 8/171:25 pm
MDW
- EZE
2 stops18h 20m
Delta
Mon 8/311:10 pm
EZE
- MDW
2 stops22h 49m
Delta
Deal found 7/19![Delta logo]()
$912
This Copa Airlines deal was found by Cheapflights users on 7/17. 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 9/133:20 pm
ORD
- EZE
1 stop29h 06m
Copa Airlines
Thu 9/248:59 am
EZE
- ORD
1 stop18h 03m
Copa Airlines
Deal found 7/17![Copa Airlines logo]()
$946
This Mytrip deal was found by Cheapflights users on 7/19. 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 8/1512:12 pm
ORD
- AEP
3 stops26h 48m
Multiple Airlines
Wed 8/1911:55 am
AEP
- ORD
2 stops35h 25m
Multiple Airlines
Deal found 7/19![Multiple Airlines logo]()
$976
This Delta deal was found by Cheapflights users on 7/17. 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.
Fri 8/211:25 pm
MDW
- EZE
2 stops18h 20m
Delta
Fri 8/281:10 pm
EZE
- MDW
2 stops23h 00m
Delta
Deal found 7/17![Delta logo]()
$912
This Copa Airlines deal was found by Cheapflights users on 7/20. 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 9/88:01 am
ORD
- EZE
1 stop21h 56m
Copa Airlines
Fri 9/255:25 am
EZE
- ORD
1 stop21h 37m
Copa Airlines
Deal found 7/20![Copa Airlines logo]()
$946
This Mytrip deal was found by Cheapflights users on 7/17. 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 8/231:59 am
ORD
- AEP
3 stops25h 41m
Multiple Airlines
Mon 8/3110:10 pm
AEP
- ORD
2 stops25h 10m
Multiple Airlines
Deal found 7/17![Multiple Airlines logo]()
$985
This Delta deal was found by Cheapflights users on 7/20. 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 8/111:00 pm
ORD
- AEP
2 stops42h 25m
Delta
Sat 8/156:20 pm
AEP
- ORD
2 stops41h 07m
Delta
Deal found 7/20![Delta logo]()
$916
This LATAM Airlines deal was found by Cheapflights users on 7/21. 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 8/176:05 am
MDW
- AEP
2 stops24h 25m
LATAM Airlines
Sun 8/235:35 pm
AEP
- MDW
2 stops20h 16m
LATAM Airlines
Deal found 7/21![LATAM Airlines logo]()
$1,118
This Copa Airlines deal was found by Cheapflights users on 7/21. 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 35m
Copa Airlines
Sun 9/203:48 am
EZE
- ORD
1 stop23h 14m
Copa Airlines
Deal found 7/21![Copa Airlines logo]()
$946
This LATAM Airlines deal was found by Cheapflights users on 7/18. 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 10/1410:58 am
MDW
- AEP
2 stops19h 32m
LATAM Airlines
Mon 10/198:05 pm
AEP
- MDW
2 stops18h 00m
LATAM Airlines
Deal found 7/18![LATAM Airlines logo]()
$1,118
This Delta deal was found by Cheapflights users on 7/19. 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 8/2510:54 am
MDW
- EZE
2 stops18h 46m
Delta
Thu 9/38:10 pm
EZE
- MDW
1 stop15h 49m
Delta
Deal found 7/19![Delta logo]()
$933
This Delta deal was found by Cheapflights users on 7/19. 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 8/1810:33 am
ORD
- AEP
2 stops19h 07m
Delta
Tue 9/18:05 pm
AEP
- ORD
2 stops22h 46m
Delta
Deal found 7/19![Delta logo]()
$933
This KAYAK deal was found by Cheapflights users on 7/19. 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 8/314:39 pm
MDW
- AEP
2 stops21h 21m
LATAM Airlines
Wed 9/98:05 pm
AEP
- MDW
2 stops16h 31m
LATAM Airlines
Deal found 7/19![LATAM Airlines logo]()
$1,213
This Delta deal was found by Cheapflights users on 7/17. 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 8/3110:54 am
MDW
- EZE
2 stops20h 46m
Delta
Mon 9/78:10 pm
EZE
- MDW
2 stops22h 47m
Delta
Deal found 7/17![Delta logo]()
$937
This Delta deal was found by Cheapflights users on 7/17. 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.
Sat 8/152:30 pm
ORD
- EZE
2 stops17h 15m
Delta
Sun 8/238:10 pm
EZE
- ORD
2 stops18h 58m
Delta
Deal found 7/17![Delta logo]()
$937
This Cheapflightsfares deal was found by Cheapflights users on 7/17. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/185:11 pm
MDW
- AEP
2 stops19h 39m
LATAM Airlines
Mon 10/125:35 pm
AEP
- MDW
2 stops20h 30m
LATAM Airlines
Deal found 7/17![LATAM Airlines logo]()
$1,296
This Delta deal was found by Cheapflights users on 7/21. 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 8/2412:46 pm
MDW
- EZE
1 stop18h 59m
Delta
Wed 9/28:10 pm
EZE
- MDW
1 stop22h 05m
Delta
Deal found 7/21![Delta logo]()
$958
This BestDay deal was found by Cheapflights users on 7/17. 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 BestDay is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/314:39 pm
MDW
- AEP
2 stops20h 11m
LATAM Airlines
Mon 9/78:05 pm
AEP
- MDW
2 stops16h 32m
LATAM Airlines
Deal found 7/17![LATAM Airlines logo]()
$1,326
This Delta deal was found by Cheapflights users on 7/21. 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.
Sat 8/224:39 pm
MDW
- EZE
1 stop15h 06m
Delta
Thu 9/38:10 pm
EZE
- MDW
1 stop15h 49m
Delta
Deal found 7/21![Delta logo]()
$958
This Delta deal was found by Cheapflights users on 7/18. 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.
Thu 9/104:30 pm
MDW
- EZE
1 stop15h 15m
Delta
Mon 9/148:10 pm
EZE
- MDW
1 stop15h 39m
Delta
Deal found 7/18![Delta logo]()
$958
This Delta deal was found by Cheapflights users on 7/20. 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 9/281:00 pm
MDW
- EZE
1 stop18h 45m
Delta
Tue 10/68:10 pm
EZE
- MDW
1 stop17h 55m
Delta
Deal found 7/20![Delta logo]()
$958
This Delta deal was found by Cheapflights users on 7/21. 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 8/265:10 pm
MDW
- EZE
1 stop14h 35m
Delta
Tue 9/18:10 pm
EZE
- MDW
1 stop21h 34m
Delta
Deal found 7/21![Delta logo]()
$958
This Delta deal was found by Cheapflights users on 7/18. 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 9/66:05 am
MDW
- EZE
2 stops22h 05m
Delta
Tue 9/158:10 pm
EZE
- MDW
1 stop15h 39m
Delta
Deal found 7/18![Delta logo]()
$958
Last-minute flights from Chicago to Buenos AiresDiscover last-minute flight deals from Chicago to Buenos Aires. Data last updated July 22, 2026 and is based on user searches.
Discover last-minute flight deals from Chicago to Buenos Aires. Data last updated July 22, 2026 and is based on user searches.
This Expedia deal was found by Cheapflights users on 7/17. 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.
Sat 8/1512:12 pm
ORD
- EZE
1 stop13h 58m
Arajet
Sat 8/292:45 am
EZE
- ORD
1 stop21h 25m
Arajet
Deal found 7/17![Arajet logo]()
$676
This Kiwi.com deal was found by Cheapflights users on 7/21. 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 8/1512:12 pm
ORD
- EZE
1 stop13h 58m
Arajet
Sun 8/238:40 am
EZE
- ORD
1 stop15h 30m
Arajet
Deal found 7/21![Arajet logo]()
$692
This Mytrip deal was found by Cheapflights users on 7/19. 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 8/1512:12 pm
ORD
- EZE
1 stop13h 58m
Multiple Airlines
Wed 8/197:30 pm
EZE
- ORD
2 stops27h 50m
Multiple Airlines
Deal found 7/19![Multiple Airlines logo]()
$777
This Kiwi.com deal was found by Cheapflights users on 7/21. 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 8/201:03 pm
ORD
- EZE
2 stops18h 42m
Multiple Airlines
Sun 8/308:40 am
EZE
- ORD
1 stop15h 30m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$717
This Kiwi.com deal was found by Cheapflights users on 7/21. 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 8/216:25 pm
ORD
- EZE
1 stop13h 20m
Multiple Airlines
Sun 8/308:40 am
EZE
- ORD
1 stop15h 30m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$773
This Kiwi.com deal was found by Cheapflights users on 7/21. 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
Sun 8/308:40 am
EZE
- ORD
1 stop15h 30m
Arajet
Deal found 7/21![Arajet logo]()
$596
This Kiwi.com deal was found by Cheapflights users on 7/21. 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
Thu 9/39:45 am
EZE
- ORD
1 stop15h 55m
Arajet
Deal found 7/21![Arajet logo]()
$671
This Kiwi.com deal was found by Cheapflights users on 7/21. 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 8/2212:44 am
ORD
- EZE
2 stops26h 16m
Multiple Airlines
Thu 9/39:45 am
EZE
- ORD
1 stop15h 55m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$753
This Kiwi.com deal was found by Cheapflights users on 7/21. 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
Multiple Airlines
Tue 9/17:21 pm
EZE
- ORD
2 stops20h 38m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$770
This Kiwi.com deal was found by Cheapflights users on 7/21. 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
Multiple Airlines
Wed 9/24:45 am
EZE
- ORD
2 stops20h 42m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$774
This Kiwi.com deal was found by Cheapflights users on 7/21. 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 8/2412:44 am
ORD
- EZE
2 stops25h 01m
Multiple Airlines
Sun 8/308:40 am
EZE
- ORD
1 stop15h 30m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$588
This Kiwi.com deal was found by Cheapflights users on 7/21. 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 8/2412:44 am
ORD
- EZE
2 stops25h 01m
Multiple Airlines
Fri 8/289:15 pm
EZE
- ORD
1 stop15h 57m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$694
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 July 22, 2026.
Search for one-way flight options from Chicago to Buenos Aires. Find affordable one-way fares based on user searches. Data last updated July 22, 2026.
This eDestinos deal was found by Cheapflights users on 7/22. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/285:30 am
ORD
- EZE
1 stop16h 35m
Arajet
Deal found 7/22![Arajet logo]()
$267
This Kiwi.com deal was found by Cheapflights users on 7/19. 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 7/19![Arajet logo]()
$295
This Booking.com deal was found by Cheapflights users on 7/21. 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.
Fri 9/116:45 am
ORD
- EZE
1 stop22h 45m
Arajet
Deal found 7/21![Arajet logo]()
$304
This Trip.com deal was found by Cheapflights users on 7/20. 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.
Mon 10/55:30 am
ORD
- EZE
1 stop16h 35m
Arajet
Deal found 7/20![Arajet logo]()
$312
This Kiwi.com deal was found by Cheapflights users on 7/19. 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 8/2412:44 am
ORD
- EZE
2 stops25h 01m
Multiple Airlines
Deal found 7/19![Multiple Airlines logo]()
$318
This Kiwi.com deal was found by Cheapflights users on 7/19. 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 8/2212:44 am
ORD
- EZE
2 stops26h 16m
Multiple Airlines
Deal found 7/19![Multiple Airlines logo]()
$340
This Kiwi.com deal was found by Cheapflights users on 7/20. 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 9/285:30 am
ORD
- AEP
2 stops26h 01m
Multiple Airlines
Deal found 7/20![Multiple Airlines logo]()
$342
This Mytrip deal was found by Cheapflights users on 7/21. 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 10/96:45 am
ORD
- EZE
1 stop22h 00m
Arajet
Deal found 7/21![Arajet logo]()
$356
This Kiwi.com deal was found by Cheapflights users on 7/19. 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 9/1310:40 pm
ORD
- EZE
3 stops50h 20m
Multiple Airlines
Deal found 7/19![Multiple Airlines logo]()
$357
This Kiwi.com deal was found by Cheapflights users on 7/21. 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 8/115:13 pm
ORD
- AEP
3 stops40h 07m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$361
This Kiwi.com deal was found by Cheapflights users on 7/21. 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 10/314:44 pm
ORD
- AEP
3 stops47h 56m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$362
This Kiwi.com deal was found by Cheapflights users on 7/20. 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 9/136:30 am
ORD
- AEP
3 stops48h 00m
Multiple Airlines
Deal found 7/20![Multiple Airlines logo]()
$373
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 July 22, 2026.
Most accurate provider | Ovago 3 stars |
|---|---|
Most trusted provider | Ovago 3 stars |
Round-trip from | $566 (Expedia) |
One-way from | $267 (eDestinos) |
Popular in | October |
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 July 22, 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
MDW - EZE
MDWEZE
Chicago Midway
Thu 8/13
12:46 pm-9:45 am
1 stop18h 59m
Buenos Aires Ministro Pistarini
Wed 8/19
8:10 pm-11:51 am
1 stop17h 41m
$908
ChicagoBuenos Aires
ORD - EZE
ORDEZE
Chicago O'Hare Intl
Fri 8/21
7:30 am-8:00 am
1 stop22h 30m
Buenos Aires Ministro Pistarini
Fri 8/28
9:00 pm-10:15 am
1 stop15h 15m
$908
ChicagoBuenos Aires
ORD - EZE
ORDEZE
Chicago O'Hare Intl
Mon 8/24
6:30 am-8:00 am
1 stop23h 30m
Buenos Aires Ministro Pistarini
Wed 8/26
9:00 pm-6:30 pm
1 stop23h 30m
$908
ChicagoBuenos Aires
MDW - EZE
MDWEZE
Chicago Midway
Mon 8/17
1:25 pm-9:45 am
2 stops18h 20m
Buenos Aires Ministro Pistarini
Mon 8/31
1:10 pm-9:59 am
2 stops22h 49m
$912
ChicagoBuenos Aires
MDW - EZE
MDWEZE
Chicago Midway
Fri 8/21
1:25 pm-9:45 am
2 stops18h 20m
Buenos Aires Ministro Pistarini
Fri 8/28
1:10 pm-10:10 am
2 stops23h 00m
$912
ChicagoBuenos Aires
ORD - AEP
ORDAEP
Chicago O'Hare Intl
Tue 8/11
1:00 pm-9:25 am
2 stops42h 25m
Buenos Aires Jorge Newbery
Sat 8/15
6:20 pm-9:27 am
2 stops41h 07m
$916
ChicagoBuenos Aires
ORD - EZE
ORDEZE
Chicago O'Hare Intl
Tue 8/18
2:15 pm-12:05 am
3 stops31h 50m
Buenos Aires Ministro Pistarini
Tue 9/1
12:15 pm-9:20 pm
2 stops35h 05m
$919
ChicagoBuenos Aires
ORD - EZE
ORDEZE
Chicago O'Hare Intl
Tue 8/18
8:02 am-7:57 am
1 stop21h 55m
Buenos Aires Ministro Pistarini
Tue 9/1
2:49 pm-1:59 pm
1 stop25h 10m
$921
ChicagoBuenos Aires
MDW - EZE
MDWEZE
Chicago Midway
Tue 8/25
10:54 am-7:40 am
2 stops18h 46m
Buenos Aires Ministro Pistarini
Thu 9/3
8:10 pm-9:59 am
1 stop15h 49m
$933
ChicagoBuenos Aires
ORD - AEP
ORDAEP
Chicago O'Hare Intl
Tue 8/18
10:33 am-7:40 am
2 stops19h 07m
Buenos Aires Jorge Newbery
Tue 9/1
8:05 pm-4:51 pm
2 stops22h 46m
$933
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 July.
| 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
MDW-EZE
ORD-AEP
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
MDW-EZE
ORD-AEP
MDW-AEP
What is the cheapest month to book a flight from Chicago to Buenos Aires?
Currently, November is the cheapest month in which you can book a flight from Chicago to Buenos Aires (average of $977). Flying from Chicago to Buenos Aires in July is currently the most expensive (average of $1,243). 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 50 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 July 22, 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.
Boarding
8.1
Food
7.2
Comfort
7.8
Overall
7.8
Crew
8.5
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Boarding
8.1
Food
7.2
Comfort
7.8
Overall
7.8
Crew
8.5
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Boarding
8.1
Food
7.2
Comfort
7.8
Overall
7.8
Crew
8.5
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Boarding
8.1
Food
7.2
Comfort
7.8
Overall
7.8
Crew
8.5
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Boarding
8.1
Food
7.2
Comfort
7.8
Overall
7.8
Crew
8.5
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Boarding
8.1
Food
7.2
Comfort
7.8
Overall
7.8
Crew
8.5
Entertainment
7.8
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 July 22, 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 July 22, 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 July 22, 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 July 22, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$360 | Average$901 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$727 | Average$918 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$768 | Average$1,022 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$792 | Average$990 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$901 | Average$1,496 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$951 | Average$1,158 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$972 | Average$1,284 | FlexibilityNo cancel fee | On-time71% |