$295+ 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 11/1. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — BUE
Sep 16 — Sep 231
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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
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 August 17, 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 August 17, 2026.
This Orbitz deal was found by Cheapflights users on 8/14. 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.
Mon 10/55:30 am -
1 stop16h 35m
Thu 10/297:10 am -
1 stop18h 30m
Deal found 8/14![Arajet logo]()
$496
This Kiwi.com deal was found by Cheapflights users on 8/15. 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 -
2 stops37h 50m
Thu 10/111:00 am -
1 stop14h 40m
Deal found 8/15![Multiple Airlines logo]()
$591
This Kiwi.com deal was found by Cheapflights users on 8/16. 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 10/55:30 am -
1 stop16h 35m
Sat 10/172:20 pm -
2 stops33h 50m
Deal found 8/16![Multiple Airlines logo]()
$616
This Expedia deal was found by Cheapflights users on 8/17. 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.
Sun 11/83:20 am -
1 stop13h 55m
Thu 11/1211:00 am -
1 stop14h 40m
Deal found 8/17![Arajet logo]()
$617
This Booking.com deal was found by Cheapflights users on 8/15. 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 10/55:30 am -
1 stop16h 35m
Wed 10/289:15 pm -
1 stop28h 25m
Deal found 8/15![Arajet logo]()
$625
This Kiwi.com deal was found by Cheapflights users on 8/16. 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 10/55:30 am -
1 stop16h 35m
Wed 10/149:15 pm -
1 stop28h 25m
Deal found 8/16![Arajet logo]()
$635
This Expedia deal was found by Cheapflights users on 8/15. 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 9/215:30 am -
1 stop16h 35m
Thu 10/111:00 am -
1 stop14h 40m
Deal found 8/15![Arajet logo]()
$636
This Booking.com deal was found by Cheapflights users on 8/15. 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 10/236:45 am -
1 stop34h 55m
Thu 10/2911:00 am -
1 stop14h 40m
Deal found 8/15![Arajet logo]()
$645
This Flightnetwork deal was found by Cheapflights users on 8/15. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/55:30 am -
1 stop16h 35m
Sat 10/172:45 am -
1 stop21h 25m
Deal found 8/15![Arajet logo]()
$670
This Booking.com deal was found by Cheapflights users on 8/15. 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 10/55:30 am -
1 stop16h 35m
Thu 10/811:00 am -
1 stop14h 40m
Deal found 8/15![Arajet logo]()
$672
This Booking.com deal was found by Cheapflights users on 8/13. 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 9/1212:12 pm -
1 stop13h 58m
Sat 9/262:45 am -
1 stop21h 25m
Deal found 8/13![Arajet logo]()
$673
This Booking.com deal was found by Cheapflights users on 8/15. 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 -
1 stop16h 35m
Thu 9/179:45 am -
1 stop15h 55m
Deal found 8/15![Arajet logo]()
$674
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 August 17, 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 August 17, 2026.
This Arajet deal was found by Cheapflights users on 8/15. 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 9/116:45 am -
1 stop22h 00m
Sun 9/208:40 am -
1 stop15h 30m
Deal found 8/15![Arajet logo]()
$1,008
This Delta deal was found by Cheapflights users on 8/13. 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 8/2910:56 am -
1 stop20h 49m
Tue 9/88:10 pm -
1 stop21h 14m
Deal found 8/13![Delta logo]()
$1,029
This Copa Airlines deal was found by Cheapflights users on 8/13. 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 12/12:13 pm -
1 stop29h 11m
Thu 12/108:58 am -
1 stop30h 48m
Deal found 8/13![Copa Airlines logo]()
$1,088
This United Airlines deal was found by Cheapflights users on 8/14. 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.
Wed 11/1812:40 pm -
1 stop17h 40m
Fri 11/2711:55 pm -
1 stop19h 35m
Deal found 8/14![United Airlines logo]()
$1,100
This Delta deal was found by Cheapflights users on 8/13. 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 -
1 stop20h 51m
Tue 9/88:10 pm -
1 stop21h 14m
Deal found 8/13![Delta logo]()
$1,029
This Arajet deal was found by Cheapflights users on 8/12. 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 8/2912:12 pm -
1 stop13h 58m
Sat 9/1911:00 am -
1 stop37h 10m
Deal found 8/12![Arajet logo]()
$1,076
This Copa Airlines deal was found by Cheapflights users on 8/14. 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 9/93:20 pm -
1 stop14h 37m
Mon 9/215:25 am -
1 stop21h 37m
Deal found 8/14![Copa Airlines logo]()
$1,088
This United Airlines deal was found by Cheapflights users on 8/17. 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.
Tue 12/87:45 am -
1 stop22h 35m
Wed 1/1311:55 pm -
1 stop14h 32m
Deal found 8/17![United Airlines logo]()
$1,100
This Delta deal was found by Cheapflights users on 8/12. 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 8/281:50 pm -
1 stop17h 55m
Mon 9/148:10 pm -
1 stop15h 15m
Deal found 8/12![Delta logo]()
$1,054
This Copa Airlines deal was found by Cheapflights users on 8/15. 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 -
1 stop14h 12m
Mon 12/72:34 pm -
1 stop25h 12m
Deal found 8/15![Copa Airlines logo]()
$1,088
This United Airlines deal was found by Cheapflights users on 8/14. 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 9/78:50 am -
1 stop21h 10m
Wed 9/99:00 pm -
1 stop23h 30m
Deal found 8/14![United Airlines logo]()
$1,100
This Delta deal was found by Cheapflights users on 8/12. 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 8/296:30 pm -
1 stop13h 15m
Wed 9/168:10 pm -
1 stop24h 35m
Deal found 8/12![Delta logo]()
$1,054
This United Airlines deal was found by Cheapflights users on 8/16. 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 12/136:00 am -
1 stop24h 20m
Fri 12/2510:05 pm -
1 stop17h 58m
Deal found 8/16![United Airlines logo]()
$1,100
This Delta deal was found by Cheapflights users on 8/13. 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 9/151:00 pm -
1 stop18h 45m
Tue 9/298:10 pm -
1 stop15h 39m
Deal found 8/13![Delta logo]()
$1,100
This Delta deal was found by Cheapflights users on 8/14. 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 9/271:00 pm -
1 stop18h 45m
Mon 10/58:10 pm -
1 stop15h 53m
Deal found 8/14![Delta logo]()
$1,100
This Delta deal was found by Cheapflights users on 8/12. 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 10/255:15 pm -
2 stops20h 45m
Sat 10/315:00 pm -
2 stops20h 47m
Deal found 8/12![Delta logo]()
$1,100
This Delta deal was found by Cheapflights users on 8/16. 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 9/124:30 pm -
1 stop15h 15m
Thu 9/178:10 pm -
1 stop22h 05m
Deal found 8/16![Delta logo]()
$1,100
This Delta deal was found by Cheapflights users on 8/12. 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 10/225:15 pm -
2 stops20h 45m
Tue 11/38:40 am -
2 stops29h 03m
Deal found 8/12![Delta logo]()
$1,100
This Delta deal was found by Cheapflights users on 8/15. 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 9/2910:48 am -
2 stops18h 52m
Tue 10/63:45 pm -
2 stops20h 18m
Deal found 8/15![Delta logo]()
$1,100
This Delta deal was found by Cheapflights users on 8/12. 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 10/2012:45 pm -
2 stops16h 55m
Sun 11/15:35 pm -
2 stops24h 42m
Deal found 8/12![Delta logo]()
$1,100
This Delta deal was found by Cheapflights users on 8/13. 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 9/2810:48 am -
2 stops18h 52m
Mon 10/58:05 pm -
2 stops17h 45m
Deal found 8/13![Delta logo]()
$1,100
This Delta deal was found by Cheapflights users on 8/15. 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 9/710:54 am -
2 stops27h 06m
Tue 9/158:05 pm -
2 stops22h 10m
Deal found 8/15![Delta logo]()
$1,100
This Delta deal was found by Cheapflights users on 8/12. 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 10/225:15 pm -
2 stops20h 45m
Sun 11/15:35 pm -
2 stops24h 42m
Deal found 8/12![Delta logo]()
$1,100
This Delta deal was found by Cheapflights users on 8/12. 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 10/244:19 pm -
2 stops21h 41m
Fri 11/65:35 pm -
2 stops20h 02m
Deal found 8/12![Delta logo]()
$1,100
This Delta deal was found by Cheapflights users on 8/12. 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 10/2512:45 pm -
2 stops25h 15m
Fri 11/65:35 pm -
2 stops20h 02m
Deal found 8/12![Delta logo]()
$1,100
This Delta deal was found by Cheapflights users on 8/15. 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 9/911:35 am -
2 stops26h 25m
Tue 9/158:05 pm -
2 stops22h 10m
Deal found 8/15![Delta logo]()
$1,100
This Delta deal was found by Cheapflights users on 8/17. 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.
Wed 9/96:25 pm -
2 stops19h 35m
Tue 9/158:05 pm -
2 stops22h 32m
Deal found 8/17![Delta logo]()
$1,100
This Delta deal was found by Cheapflights users on 8/14. 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 12/18:04 am -
2 stops20h 36m
Thu 12/105:35 pm -
2 stops19h 44m
Deal found 8/14![Delta logo]()
$1,100
This Delta deal was found by Cheapflights users on 8/16. 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 9/145:10 pm -
1 stop14h 35m
Mon 9/218:10 pm -
2 stops18h 29m
Deal found 8/16![Delta logo]()
$1,104
This Delta deal was found by Cheapflights users on 8/15. 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 10/510:48 am -
2 stops20h 52m
Fri 10/168:10 pm -
2 stops18h 37m
Deal found 8/15![Delta logo]()
$1,104
Last-minute flights from Chicago to Buenos AiresDiscover last-minute flight deals from Chicago to Buenos Aires. Data last updated August 17, 2026 and is based on user searches.
Discover last-minute flight deals from Chicago to Buenos Aires. Data last updated August 17, 2026 and is based on user searches.
This Mytrip deal was found by Cheapflights users on 8/12. 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 9/512:12 pm -
2 stops18h 18m
Tue 9/293:45 pm -
3 stops34h 02m
Deal found 8/12![Multiple Airlines logo]()
$821
This Mytrip deal was found by Cheapflights users on 8/14. 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 9/512:12 pm -
2 stops18h 18m
Wed 9/2310:50 pm -
2 stops24h 30m
Deal found 8/14![Multiple Airlines logo]()
$901
This Booking.com deal was found by Cheapflights users on 8/15. 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 -
1 stop16h 35m
Thu 9/179:45 am -
1 stop15h 55m
Deal found 8/15![Arajet logo]()
$674
This Booking.com deal was found by Cheapflights users on 8/13. 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 -
1 stop22h 00m
Sat 9/262:45 am -
1 stop21h 25m
Deal found 8/13![Arajet logo]()
$730
This Booking.com deal was found by Cheapflights users on 8/13. 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 9/1212:12 pm -
1 stop13h 58m
Sat 9/262:45 am -
1 stop21h 25m
Deal found 8/13![Arajet logo]()
$673
This Booking.com deal was found by Cheapflights users on 8/15. 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 9/1212:12 pm -
1 stop13h 58m
Thu 9/179:45 am -
1 stop15h 55m
Deal found 8/15![Arajet logo]()
$723
This LATAM Airlines deal was found by Cheapflights users on 8/16. 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.
Sat 9/1211:35 am -
2 stops18h 05m
Thu 9/172:55 pm -
2 stops20h 54m
Deal found 8/16![LATAM Airlines logo]()
$927
This Mytrip deal was found by Cheapflights users on 8/16. 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 9/145:30 am -
2 stops26h 01m
Thu 9/1710:10 pm -
2 stops25h 10m
Deal found 8/16![Multiple Airlines logo]()
$887
This Kiwi.com deal was found by Cheapflights users on 8/15. 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 -
2 stops37h 50m
Thu 10/111:00 am -
1 stop14h 40m
Deal found 8/15![Multiple Airlines logo]()
$591
This Expedia deal was found by Cheapflights users on 8/15. 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 9/215:30 am -
1 stop16h 35m
Thu 10/111:00 am -
1 stop14h 40m
Deal found 8/15![Arajet logo]()
$636
This Kiwi.com deal was found by Cheapflights users on 8/13. 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 -
2 stops29h 35m
Thu 10/2911:00 am -
1 stop14h 40m
Deal found 8/13![Multiple Airlines logo]()
$679
This Mytrip deal was found by Cheapflights users on 8/14. 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 9/285:30 am -
2 stops26h 01m
Mon 10/55:40 am -
2 stops21h 17m
Deal found 8/14![Multiple Airlines logo]()
$825
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 August 17, 2026.
Search for one-way flight options from Chicago to Buenos Aires. Find affordable one-way fares based on user searches. Data last updated August 17, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/16. 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 11/13:20 am -
1 stop13h 55m
Deal found 8/16![Arajet logo]()
$295
This Booking.com deal was found by Cheapflights users on 8/16. 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 -
1 stop24h 45m
Deal found 8/16![Arajet logo]()
$313
This Arajet deal was found by Cheapflights users on 8/16. 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 11/65:45 am -
1 stop22h 00m
Deal found 8/16![Arajet logo]()
$318
This Kiwi.com deal was found by Cheapflights users on 8/15. 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 9/241:01 pm -
3 stops36h 22m
Deal found 8/15![Multiple Airlines logo]()
$326
This Kiwi.com deal was found by Cheapflights users on 8/16. 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 10/197:40 am -
3 stops41h 20m
Deal found 8/16![Multiple Airlines logo]()
$329
This Kiwi.com deal was found by Cheapflights users on 8/15. 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 -
2 stops26h 01m
Deal found 8/15![Multiple Airlines logo]()
$329
This Kiwi.com deal was found by Cheapflights users on 8/16. 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 11/26:00 am -
3 stops25h 00m
Deal found 8/16![Multiple Airlines logo]()
$331
This Kiwi.com deal was found by Cheapflights users on 8/16. 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 11/13:20 am -
2 stops25h 30m
Deal found 8/16![Multiple Airlines logo]()
$331
This Kiwi.com deal was found by Cheapflights users on 8/16. 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 10/3111:27 am -
2 stops38h 53m
Deal found 8/16![Multiple Airlines logo]()
$333
This Kiwi.com deal was found by Cheapflights users on 8/15. 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 9/286:20 am -
3 stops43h 25m
Deal found 8/15![Multiple Airlines logo]()
$337
This Kiwi.com deal was found by Cheapflights users on 8/14. 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 10/147:44 pm -
3 stops53h 39m
Deal found 8/14![Multiple Airlines logo]()
$338
This Booking.com deal was found by Cheapflights users on 8/16. 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 -
1 stop22h 45m
Deal found 8/16![Arajet logo]()
$339
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 August 17, 2026.
Most accurate provider | Ovago 3 stars |
|---|---|
Most trusted provider | Ovago 3 stars |
Round-trip from | $496 (Orbitz) |
One-way from | $295 (Kiwi.com) |
Popular in | February |
Cheapest in | April |
Average price | $1,103 |
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 August 17, 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 Chicago O'Hare Intl - EZE Buenos Aires Ministro Pistarini
ORDEZE
Chicago O'Hare Intl
Fri 9/11
6:45 am-6:45 am
1 stop22h 00m
Buenos Aires Ministro Pistarini
Sun 9/20
8:40 am-10:10 pm
1 stop15h 30m
$1,008
ChicagoBuenos Aires
MDW Chicago Midway - EZE Buenos Aires Ministro Pistarini
MDWEZE
Chicago Midway
Sat 8/29
10:56 am-9:45 am
1 stop20h 49m
Buenos Aires Ministro Pistarini
Tue 9/8
8:10 pm-3:24 pm
1 stop21h 14m
$1,029
ChicagoBuenos Aires
MDW Chicago Midway - EZE Buenos Aires Ministro Pistarini
MDWEZE
Chicago Midway
Mon 8/31
10:54 am-9:45 am
1 stop20h 51m
Buenos Aires Ministro Pistarini
Tue 9/8
8:10 pm-3:24 pm
1 stop21h 14m
$1,029
ChicagoBuenos Aires
ORD Chicago O'Hare Intl - EZE Buenos Aires Ministro Pistarini
ORDEZE
Chicago O'Hare Intl
Fri 8/28
1:50 pm-9:45 am
1 stop17h 55m
Buenos Aires Ministro Pistarini
Mon 9/14
8:10 pm-9:25 am
1 stop15h 15m
$1,054
ChicagoBuenos Aires
ORD Chicago O'Hare Intl - EZE Buenos Aires Ministro Pistarini
ORDEZE
Chicago O'Hare Intl
Sat 8/29
6:30 pm-9:45 am
1 stop13h 15m
Buenos Aires Ministro Pistarini
Wed 9/16
8:10 pm-6:45 pm
1 stop24h 35m
$1,054
ChicagoBuenos Aires
ORD Chicago O'Hare Intl - EZE Buenos Aires Ministro Pistarini
ORDEZE
Chicago O'Hare Intl
Sat 8/29
12:12 pm-4:10 am
1 stop13h 58m
Buenos Aires Ministro Pistarini
Sat 9/19
11:00 am-10:10 pm
1 stop37h 10m
$1,076
ChicagoBuenos Aires
ORD Chicago O'Hare Intl - EZE Buenos Aires Ministro Pistarini
ORDEZE
Chicago O'Hare Intl
Tue 12/1
2:13 pm-10:24 pm
1 stop29h 11m
Buenos Aires Ministro Pistarini
Thu 12/10
8:58 am-12:46 pm
1 stop30h 48m
$1,088
ChicagoBuenos Aires
ORD Chicago O'Hare Intl - EZE Buenos Aires Ministro Pistarini
ORDEZE
Chicago O'Hare Intl
Wed 9/9
3:20 pm-7:57 am
1 stop14h 37m
Buenos Aires Ministro Pistarini
Mon 9/21
5:25 am-1:02 am
1 stop21h 37m
$1,088
ChicagoBuenos Aires
ORD Chicago O'Hare Intl - EZE Buenos Aires Ministro Pistarini
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
$1,088
ChicagoBuenos Aires
ORD Chicago O'Hare Intl - EZE Buenos Aires Ministro Pistarini
ORDEZE
Chicago O'Hare Intl
Wed 11/18
12:40 pm-9:20 am
1 stop17h 40m
Buenos Aires Ministro Pistarini
Fri 11/27
11:55 pm-4:30 pm
1 stop19h 35m
$1,100
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 August.
| 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
MDW-AEP
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
ORD-EZE
MDW-EZE
MDW-AEP
ORD-AEP
What is the cheapest month to book a flight from Chicago to Buenos Aires?
Currently, May is the cheapest month in which you can book a flight from Chicago to Buenos Aires (average of $978). Flying from Chicago to Buenos Aires in July is currently the most expensive (average of $1,306). 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?
Airfare is below average for this route at the moment.
Chicago to Buenos Aires flights typically cost between $1,087 and $1,232 in October.The cheapest round-trip price found within the last 5 days was $496 on Arajet (Oct 5-Oct 29).
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 August 17, 2026.
Peruse reviews from past customers who have flown with Copa Airlines,LATAM Airlines, andAmerican 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
7.8
Comfort
7.4
Entertainment
6.8
Food
6.9
Crew
8.1
Overall
7.6
Reviews
1 / 20
2.0
MediocreAnonymous,Jul 2026
BOS - PTY
Boarding
7.8
Comfort
7.4
Entertainment
6.8
Food
6.9
Crew
8.1
Overall
7.6
Reviews
1 / 20
2.0
MediocreAnonymous,Jul 2026
BOS - PTY
Boarding
7.8
Comfort
7.4
Entertainment
6.8
Food
6.9
Crew
8.1
Overall
7.6
Reviews
1 / 20
2.0
MediocreAnonymous,Jul 2026
BOS - PTY
Boarding
7.8
Comfort
7.4
Entertainment
6.8
Food
6.9
Crew
8.1
Overall
7.6
Reviews
1 / 20
2.0
MediocreAnonymous,Jul 2026
BOS - PTY
Boarding
7.8
Comfort
7.4
Entertainment
6.8
Food
6.9
Crew
8.1
Overall
7.6
Reviews
1 / 20
2.0
MediocreAnonymous,Jul 2026
BOS - PTY
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
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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 August 17, 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 August 17, 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 August 17, 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 August 17, 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$1,038 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$792 | Average$1,050 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$901 | Average$1,496 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$951 | Average$1,199 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$968 | Average$1,339 | FlexibilityNo cancel fee | On-time71% |