$320+ Cheap flights from O'Hare Intl (ORD) to Buenos Aires (BUE)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/19. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BUE
Nov 26 — Dec 31
Round-trip
1 adult, Economy
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Cheapest flights from O'Hare Intl to Buenos AiresExplore the most affordable flight options available from O'Hare Intl to Buenos Aires. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 27, 2026.
Explore the most affordable flight options available from O'Hare Intl to Buenos Aires. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 27, 2026.
This SmartFares deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/242:13 pm -
1 stop31h 39m
Tue 12/12:45 pm -
1 stop25h 01m
Deal found 10/27![Copa Airlines logo]()
$909
This Avianca deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” 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.
Tue 12/110:30 pm -
1 stop14h 10m
Thu 12/107:25 am -
1 stop16h 05m
Deal found 10/23![Avianca logo]()
$911
This Avianca deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” 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.
Tue 12/110:30 pm -
1 stop14h 10m
Mon 12/77:25 am -
1 stop16h 05m
Deal found 10/25![Avianca logo]()
$912
This Copa Airlines deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” 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.
Thu 11/122:13 pm -
1 stop31h 39m
Mon 11/169:10 am -
1 stop30h 36m
Deal found 10/27![Copa Airlines logo]()
$914
This Kiwi.com deal was found by Cheapflights users on 10/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/2811:10 am -
1 stop13h 50m
Sun 12/67:20 am -
2 stops41h 53m
Deal found 10/22![Multiple Airlines logo]()
$915
This Kiwi.com deal was found by Cheapflights users on 10/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/2811:10 am -
1 stop13h 50m
Thu 12/1011:00 am -
1 stop14h 40m
Deal found 10/22![Arajet logo]()
$918
This SmartFares deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/233:59 pm -
1 stop14h 41m
Mon 11/308:05 pm -
1 stop16h 25m
Deal found 10/23![LATAM Airlines logo]()
$921
This United Airlines deal was found by Cheapflights users on 10/22. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/112:43 pm -
1 stop15h 37m
Wed 12/911:55 pm -
1 stop15h 27m
Deal found 10/22![United Airlines logo]()
$926
This Delta deal was found by Cheapflights users on 10/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/11:34 pm -
2 stops17h 06m
Thu 12/108:05 pm -
2 stops17h 20m
Deal found 10/22![Delta logo]()
$926
This Expedia deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” 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.
Wed 12/305:25 am -
2 stops25h 25m
Wed 1/2011:35 pm -
1 stop21h 57m
Deal found 10/25![LATAM Airlines logo]()
$928
This LATAM Airlines deal was found by Cheapflights users on 10/22. 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 LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/65:30 am -
2 stops21h 50m
Sun 12/139:30 pm -
1 stop24h 39m
Deal found 10/22![LATAM Airlines logo]()
$929
This Delta deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” 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 12/31:34 pm -
1 stop17h 06m
Thu 12/178:05 pm -
2 stops17h 54m
Deal found 10/26![Delta logo]()
$930
Best flights from O'Hare Intl to Buenos AiresDiscover carefully curated flight deals from O'Hare Intl to Buenos Aires that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 27, 2026.
Discover carefully curated flight deals from O'Hare Intl to Buenos Aires that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 27, 2026.
This Arajet deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” 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.
Sun 2/284:20 am -
1 stop14h 45m
Sat 3/611:25 pm -
1 stop25h 55m
Deal found 10/23![Arajet logo]()
$894
This Copa Airlines deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” 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.
Thu 11/122:13 pm -
1 stop31h 39m
Mon 11/169:10 am -
1 stop30h 36m
Deal found 10/26![Copa Airlines logo]()
$914
This United Airlines deal was found by Cheapflights users on 10/22. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/73:55 pm -
1 stop14h 25m
Thu 1/2111:55 pm -
1 stop24h 38m
Deal found 10/22![United Airlines logo]()
$926
This Delta deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/93:00 pm -
1 stop15h 40m
Fri 3/197:20 am -
2 stops18h 30m
Deal found 10/25![Delta logo]()
$926
This United Airlines deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” 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.
Thu 12/310:30 am -
1 stop19h 50m
Thu 12/1710:05 pm -
1 stop15h 05m
Deal found 10/24![United Airlines logo]()
$926
This Delta deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/86:10 pm -
2 stops18h 50m
Mon 3/158:05 pm -
2 stops18h 31m
Deal found 10/25![Delta logo]()
$926
This United Airlines deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” 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 3/106:00 am -
1 stop22h 20m
Wed 3/179:05 pm -
1 stop14h 20m
Deal found 10/25![United Airlines logo]()
$926
This Delta deal was found by Cheapflights users on 10/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/11:34 pm -
2 stops17h 06m
Thu 12/108:05 pm -
2 stops17h 20m
Deal found 10/22![Delta logo]()
$926
This Delta deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” 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 3/75:55 pm -
2 stops17h 05m
Tue 3/165:35 pm -
2 stops21h 01m
Deal found 10/25![Delta logo]()
$926
This Delta deal was found by Cheapflights users on 10/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/167:00 am -
2 stops21h 35m
Sun 1/319:30 pm -
1 stop24h 02m
Deal found 10/22![Delta logo]()
$930
This Delta deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” 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 11/2411:19 am -
2 stops19h 21m
Tue 12/19:30 pm -
2 stops21h 47m
Deal found 10/25![Delta logo]()
$930
This Delta deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” 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 2/209:50 am -
2 stops20h 50m
Sun 2/2811:35 pm -
1 stop21h 57m
Deal found 10/26![Delta logo]()
$930
This Delta deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” 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 11/2611:18 am -
2 stops19h 22m
Mon 11/308:05 pm -
2 stops17h 54m
Deal found 10/23![Delta logo]()
$930
This Delta deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” 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 12/31:34 pm -
1 stop17h 06m
Thu 12/178:05 pm -
2 stops17h 54m
Deal found 10/26![Delta logo]()
$930
This Delta deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” 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 2/29:50 am -
2 stops18h 50m
Tue 2/95:35 pm -
2 stops19h 35m
Deal found 10/24![Delta logo]()
$1,155
This Delta deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/99:30 am -
2 stops19h 10m
Fri 3/198:05 pm -
2 stops22h 32m
Deal found 10/25![Delta logo]()
$1,166
This Delta deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” 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 1/87:10 am -
2 stops21h 30m
Sun 1/175:35 pm -
2 stops25h 46m
Deal found 10/26![Delta logo]()
$1,185
This Delta deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” 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 12/51:34 pm -
2 stops39h 06m
Fri 12/188:40 am -
2 stops29h 39m
Deal found 10/25![Delta logo]()
$1,185
This Delta deal was found by Cheapflights users on 10/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/151:34 pm -
2 stops17h 06m
Tue 2/168:05 pm -
2 stops20h 15m
Deal found 10/22![Delta logo]()
$1,348
This Delta deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” 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 1/19:00 am -
2 stops19h 40m
Sat 1/165:35 pm -
2 stops19h 35m
Deal found 10/26![Delta logo]()
$1,348
This Delta deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” 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 12/49:59 am -
2 stops27h 01m
Sat 12/193:50 pm -
2 stops20h 05m
Deal found 10/25![Delta logo]()
$1,348
Last-minute flights from O'Hare Intl to Buenos AiresDiscover last-minute flight deals from O'Hare Intl to Buenos Aires. Data last updated October 27, 2026 and is based on user searches.
Discover last-minute flight deals from O'Hare Intl to Buenos Aires. Data last updated October 27, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” 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 11/104:07 pm -
1 stop36h 13m
Sat 11/1411:55 pm -
1 stop17h 56m
Deal found 10/23![United Airlines logo]()
$936
This Copa Airlines deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” 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.
Thu 11/122:13 pm -
1 stop31h 39m
Mon 11/169:10 am -
1 stop30h 36m
Deal found 10/27![Copa Airlines logo]()
$914
This Kissandfly.com deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/126:55 am -
1 stop23h 25m
Wed 11/2510:05 pm -
1 stop15h 06m
Deal found 10/25![Lufthansa logo]()
$939
This Delta deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” 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 11/126:00 am -
1 stop25h 55m
Wed 11/259:30 pm -
2 stops16h 08m
Deal found 10/24![Delta logo]()
$941
This Delta deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” 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 11/173:59 pm -
1 stop14h 41m
Mon 12/78:05 pm -
2 stops20h 51m
Deal found 10/27![Delta logo]()
$930
This SmartFares deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/233:59 pm -
1 stop14h 41m
Mon 11/308:05 pm -
1 stop16h 25m
Deal found 10/23![LATAM Airlines logo]()
$921
This SmartFares deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/242:13 pm -
1 stop31h 39m
Tue 12/12:45 pm -
1 stop25h 01m
Deal found 10/27![Copa Airlines logo]()
$909
This Kiwi.com deal was found by Cheapflights users on 10/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/252:52 pm -
2 stops41h 03m
Thu 12/1011:00 am -
1 stop14h 40m
Deal found 10/22![Multiple Airlines logo]()
$943
This Kiwi.com deal was found by Cheapflights users on 10/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/2811:10 am -
1 stop13h 50m
Sun 12/67:20 am -
2 stops41h 53m
Deal found 10/22![Multiple Airlines logo]()
$915
This Kiwi.com deal was found by Cheapflights users on 10/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/2811:10 am -
1 stop13h 50m
Thu 12/1011:00 am -
1 stop14h 40m
Deal found 10/22![Arajet logo]()
$918
This United Airlines deal was found by Cheapflights users on 10/22. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/294:05 pm -
1 stop14h 15m
Fri 12/410:05 pm -
1 stop16h 10m
Deal found 10/22![United Airlines logo]()
$926
This LATAM Airlines deal was found by Cheapflights users on 10/22. 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 LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/305:30 am -
2 stops26h 00m
Fri 12/48:05 pm -
2 stops24h 01m
Deal found 10/22![LATAM Airlines logo]()
$926
One-way flights from O'Hare Intl to Buenos AiresSearch for one-way flight options from O'Hare Intl to Buenos Aires. Find affordable one-way fares based on user searches. Data last updated October 27, 2026.
Search for one-way flight options from O'Hare Intl to Buenos Aires. Find affordable one-way fares based on user searches. Data last updated October 27, 2026.
This Booking.com deal was found by Cheapflights users on 10/22. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/195:30 am -
1 stop16h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![Arajet logo]()
$320
This Kiwi.com deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” 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 11/262:52 pm -
2 stops41h 03m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![Multiple Airlines logo]()
$376
This Kiwi.com deal was found by Cheapflights users on 10/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1110:38 am -
2 stops38h 47m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![Multiple Airlines logo]()
$385
This Mytrip deal was found by Cheapflights users on 10/22. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/294:20 am -
1 stop26h 12m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![Arajet logo]()
$393
This Thrive Travel deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Thrive Travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/141:35 pm -
1 stop18h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/27![LATAM Airlines logo]()
$397
This Kiwi.com deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/26:00 am -
3 stops46h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/26![Multiple Airlines logo]()
$400
This Kiwi.com deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/74:20 am -
2 stops24h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/26![Multiple Airlines logo]()
$412
This Kiwi.com deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” 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 3/36:00 am -
3 stops46h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/26![Multiple Airlines logo]()
$417
This Kiwi.com deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” 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 12/610:37 pm -
3 stops50h 48m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/25![Multiple Airlines logo]()
$423
This Kiwi.com deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” 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 11/2511:53 pm -
3 stops49h 42m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/26![Multiple Airlines logo]()
$424
This Kiwi.com deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” 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 1/135:16 pm -
3 stops35h 19m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/25![Multiple Airlines logo]()
$425
This Kiwi.com deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” 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 1/216:00 am -
3 stops25h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![Multiple Airlines logo]()
$428
Find flight deals from O'Hare Intl to Buenos Aires
Discover tips and strategies to find the most affordable flight options for your journey from O'Hare Intl (ORD) 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 October 27, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $715 (Expedia) |
One-way from | $320 (Booking.com) |
Popular in | April |
Cheapest in | August |
Average price | $1,217 |
Cheapflights Fare Finder
Customize your flight search to find flights from O'Hare Intl 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 7,457,451 searches. Data last updated October 27, 2026.
Use the filters below to find and compare flights from Chicago O'Hare Intl Airport 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
Mon 4/19
5:30 am-12:05 am
1 stop16h 35m
Buenos Aires Ministro Pistarini
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$320
ChicagoBuenos Aires
ORD Chicago O'Hare Intl - EZE Buenos Aires Ministro Pistarini
ORDEZE
Chicago O'Hare Intl
Sun 11/29
4:20 am-9:32 am
1 stop26h 12m
Buenos Aires Ministro Pistarini
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$393
ChicagoBuenos Aires
ORD Chicago O'Hare Intl - EZE Buenos Aires Ministro Pistarini
ORDEZE
Chicago O'Hare Intl
Sat 11/14
1:35 pm-10:55 am
1 stop18h 20m
Buenos Aires Ministro Pistarini
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$397
ChicagoBuenos Aires
ORD Chicago O'Hare Intl - AEP Buenos Aires Jorge Newbery
ORDAEP
Chicago O'Hare Intl
Thu 11/26
6:40 am-7:30 am
3 stops45h 50m
Buenos Aires Jorge Newbery
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$441
ChicagoBuenos Aires
ORD Chicago O'Hare Intl - EZE Buenos Aires Ministro Pistarini
ORDEZE
Chicago O'Hare Intl
Mon 11/30
7:49 am-9:32 am
3 stops22h 43m
Buenos Aires Ministro Pistarini
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$446
ChicagoBuenos Aires
ORD Chicago O'Hare Intl - AEP Buenos Aires Jorge Newbery
ORDAEP
Chicago O'Hare Intl
Wed 1/13
6:00 am-4:00 pm
3 stops31h 00m
Buenos Aires Jorge Newbery
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$449
ChicagoBuenos Aires
ORD Chicago O'Hare Intl - AEP Buenos Aires Jorge Newbery
ORDAEP
Chicago O'Hare Intl
Sat 2/20
11:10 am-4:20 am
2 stops38h 10m
Buenos Aires Jorge Newbery
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$504
ChicagoBuenos Aires
ORD Chicago O'Hare Intl - EZE Buenos Aires Ministro Pistarini
ORDEZE
Chicago O'Hare Intl
Fri 11/27
5:45 am-9:32 am
1 stop24h 47m
Buenos Aires Ministro Pistarini
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$513
ChicagoBuenos Aires
ORD Chicago O'Hare Intl - EZE Buenos Aires Ministro Pistarini
ORDEZE
Chicago O'Hare Intl
Wed 12/2
2:17 pm-10:20 pm
1 stop29h 03m
Buenos Aires Ministro Pistarini
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$538
Quickest round-trip
ChicagoBuenos Aires
ORD Chicago O'Hare Intl - EZE Buenos Aires Ministro Pistarini
ORDEZE
Chicago O'Hare Intl
Thu 4/15
8:08 am-12:38 am
1 stop14h 30m
Buenos Aires Ministro Pistarini
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$538
Showing 1-10 of 44 resultsSorted by cheapest first
Compare providers for flights from O'Hare Intl 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 O'Hare Intl to Buenos Aires in October.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Chicago O'Hare Intl Airport-Buenos Aires flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Chicago O'Hare Intl Airport-Buenos Aires flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Chicago O'Hare Intl Airport-Buenos Aires flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Chicago O'Hare Intl Airport-Buenos Aires flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Chicago O'Hare Intl Airport-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 O'Hare Intl to Buenos Aires
Have a flexible travel schedule? Discover the best time to fly to Buenos Aires from O'Hare Intl with our price prediction graph.
ORD-BUE
ORD-EZE
ORD-AEP
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Chicago O'Hare Intl Airport to Buenos Aires
ORD-BUE
ORD-EZE
ORD-AEP
What is the cheapest month to book a flight from Chicago O'Hare Intl Airport to Buenos Aires?
Currently, November is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Buenos Aires (average of $1,033). Flying from Chicago O'Hare Intl Airport to Buenos Aires in July is currently the most expensive (average of $1,477). 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 O'Hare Intl Airport to Buenos Aires?
Airfare is below average for this route at the moment.
Chicago O'Hare Intl Airport to Buenos Aires flights typically cost between $901 and $1,159 in April.The cheapest round-trip price found within the last 5 days was $715 on Arajet (Apr 19-Apr 22).
How far ahead should I book a flight from Chicago O'Hare Intl Airport to Buenos Aires?
The best time to book flights from Chicago O'Hare Intl Airport to Buenos Aires is 47 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 October 27, 2026.
Read reviews from past customers who have flown Delta,United Airlines, andAmerican Airlines from Chicago O'Hare Intl Airport to Buenos Aires. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.5
Entertainment
7.8
Overall
7.8
Boarding
8.1
Comfort
7.8
Food
7.2
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Crew
8.5
Entertainment
7.8
Overall
7.8
Boarding
8.1
Comfort
7.8
Food
7.2
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Crew
8.5
Entertainment
7.8
Overall
7.8
Boarding
8.1
Comfort
7.8
Food
7.2
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Crew
8.5
Entertainment
7.8
Overall
7.8
Boarding
8.1
Comfort
7.8
Food
7.2
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Crew
8.5
Entertainment
7.8
Overall
7.8
Boarding
8.1
Comfort
7.8
Food
7.2
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Related info for your journey
Find useful and relevant information for your journey from O'Hare Intl to Buenos Aires. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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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 October 27, 2026.
Complete your trip
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O'Hare Intl and Buenos Aires flights
Browse other O'Hare Intl and Buenos Aires flight options. Last updated on October 27, 2026.
Other flights from O'Hare Intl
Browse through other flights departing from O'Hare Intl. Flights are based on user searches made on Cheapflights and were last updated on October 27, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 8 airlines flying from O'Hare Intl to Buenos Aires
Discover the top 8 airlines that operate flights from O'Hare Intl 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 7,457,451 searches. Data last updated October 27, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$576 | Average$907 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$727 | Average$923 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$770 | Average$1,216 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$792 | Average$1,108 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$901 | Average$1,496 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$968 | Average$1,349 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$1,015 | Average$1,265 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$1,025 | Average$2,314 | FlexibilityNo cancel fee | On-timeN/A |