$371+ 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 1/9. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BUE
Nov 9 — Nov 161
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from O'Hare Intl 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 O'Hare Intl to Buenos Aires
Cheapest
Best
Last-minute
One-way
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 10, 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 10, 2026.
This Kiwi.com deal was found by Cheapflights users on 10/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/310:38 am -
2 stops41h 57m
Thu 12/1711:00 am -
1 stop14h 40m
Deal found 10/6![Multiple Airlines logo]()
$702
This Kiwi.com deal was found by Cheapflights users on 10/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/410:38 am -
2 stops35h 14m
Thu 12/1711:00 am -
1 stop14h 40m
Deal found 10/6![Multiple Airlines logo]()
$722
This Kiwi.com deal was found by Cheapflights users on 10/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/45:45 am -
1 stop21h 50m
Thu 12/1711:00 am -
1 stop14h 40m
Deal found 10/6![Arajet logo]()
$737
This Kiwi.com deal was found by Cheapflights users on 10/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/294:20 am -
1 stop14h 45m
Thu 12/1711:00 am -
1 stop14h 40m
Deal found 10/6![Arajet logo]()
$742
This Kiwi.com deal was found by Cheapflights users on 10/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/17:32 pm -
2 stops35h 18m
Thu 12/1711:00 am -
1 stop14h 40m
Deal found 10/6![Multiple Airlines logo]()
$760
This Kiwi.com deal was found by Cheapflights users on 10/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/2811:10 am -
1 stop13h 50m
Thu 12/1711:00 am -
1 stop14h 40m
Deal found 10/6![Arajet logo]()
$774
This Kiwi.com deal was found by Cheapflights users on 10/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/307:59 am -
2 stops22h 33m
Thu 12/1711:00 am -
1 stop14h 40m
Deal found 10/6![Multiple Airlines logo]()
$780
This Kiwi.com deal was found by Cheapflights users on 10/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/28:15 am -
2 stops23h 45m
Thu 12/1711:00 am -
1 stop14h 40m
Deal found 10/6![Multiple Airlines logo]()
$784
This Mytrip deal was found by Cheapflights users on 10/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/2811:10 am -
3 stops30h 30m
Sat 12/55:10 pm -
2 stops32h 03m
Deal found 10/6![Multiple Airlines logo]()
$958
This Cheapflightsfares deal was found by Cheapflights users on 10/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2610:00 am -
2 stops19h 30m
Wed 12/98:05 pm -
2 stops17h 20m
Deal found 10/5![LATAM Airlines logo]()
$962
This Delta deal was found by Cheapflights users on 10/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/178:04 am -
2 stops20h 36m
Mon 12/75:35 pm -
2 stops18h 51m
Deal found 10/8![Delta logo]()
$976
This FlightHub deal was found by Cheapflights users on 10/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/510:30 pm -
1 stop28h 10m
Sun 12/137:05 am -
1 stop16h 25m
Deal found 10/9![Avianca logo]()
$982
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 10, 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 10, 2026.
This Copa Airlines deal was found by Cheapflights users on 10/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/172:13 pm -
1 stop29h 07m
Mon 12/79:10 am -
1 stop18h 01m
Deal found 10/7![Copa Airlines logo]()
$914
This Delta deal was found by Cheapflights users on 10/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/138:04 am -
1 stop20h 31m
Tue 11/179:30 pm -
1 stop20h 19m
Deal found 10/6![Delta logo]()
$926
This United Airlines deal was found by Cheapflights users on 10/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/57:50 pm -
1 stop34h 30m
Tue 12/2210:05 pm -
1 stop23h 25m
Deal found 10/8![United Airlines logo]()
$986
This LATAM Airlines deal was found by Cheapflights users on 10/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/910:30 am -
2 stops25h 10m
Mon 11/238:40 am -
2 stops27h 54m
Deal found 10/8![Multiple Airlines logo]()
$1,304
This Delta deal was found by Cheapflights users on 10/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/262:44 pm -
2 stops15h 56m
Wed 12/99:30 pm -
2 stops16h 29m
Deal found 10/5![Delta logo]()
$930
This Copa Airlines deal was found by Cheapflights users on 10/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/22:13 pm -
1 stop30h 54m
Fri 11/132:02 am -
1 stop25h 09m
Deal found 10/8![Copa Airlines logo]()
$942
This Delta deal was found by Cheapflights users on 10/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1711:19 am -
2 stops19h 31m
Mon 12/78:05 pm -
2 stops17h 54m
Deal found 10/5![Delta logo]()
$930
This United Airlines deal was found by Cheapflights users on 10/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/209:35 pm -
1 stop30h 45m
Fri 11/2710:05 pm -
1 stop31h 30m
Deal found 10/6![United Airlines logo]()
$1,077
This Delta deal was found by Cheapflights users on 10/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/178:04 am -
2 stops20h 36m
Mon 12/75:35 pm -
2 stops18h 51m
Deal found 10/8![Delta logo]()
$976
This Delta deal was found by Cheapflights users on 10/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/252:44 pm -
2 stops16h 06m
Mon 11/309:30 pm -
2 stops19h 26m
Deal found 10/9![Delta logo]()
$980
This Delta deal was found by Cheapflights users on 10/9. Clicking the “Pick Dates” 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 12/511:14 am -
2 stops19h 36m
Tue 12/2211:35 pm -
1 stop17h 44m
Deal found 10/9![Delta logo]()
$1,075
This Delta deal was found by Cheapflights users on 10/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/1611:10 am -
2 stops18h 30m
Tue 4/68:05 pm -
2 stops19h 15m
Deal found 10/6![Delta logo]()
$1,116
This Delta deal was found by Cheapflights users on 10/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1911:21 am -
2 stops18h 19m
Tue 11/105:35 pm -
2 stops22h 11m
Deal found 10/6![Delta logo]()
$1,116
This Delta deal was found by Cheapflights users on 10/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/169:30 am -
2 stops20h 10m
Mon 4/58:05 pm -
2 stops18h 31m
Deal found 10/6![Delta logo]()
$1,116
This Delta deal was found by Cheapflights users on 10/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/158:04 am -
2 stops20h 36m
Thu 1/218:05 pm -
2 stops20h 15m
Deal found 10/5![Delta logo]()
$1,130
This Delta deal was found by Cheapflights users on 10/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1110:32 am -
2 stops18h 08m
Thu 11/195:35 pm -
2 stops19h 50m
Deal found 10/7![Delta logo]()
$1,180
This Delta deal was found by Cheapflights users on 10/9. Clicking the “Pick Dates” 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 32m
Deal found 10/9![Delta logo]()
$1,398
This Delta deal was found by Cheapflights users on 10/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/203:40 pm -
2 stops22h 20m
Tue 11/105:35 pm -
2 stops21h 45m
Deal found 10/6![Delta logo]()
$1,443
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 10, 2026 and is based on user searches.
Discover last-minute flight deals from O'Hare Intl to Buenos Aires. Data last updated October 10, 2026 and is based on user searches.
This lol.travel deal was found by Cheapflights users on 10/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/92:13 pm -
1 stop13h 07m
Sun 11/224:20 am -
1 stop22h 51m
Deal found 10/7![Copa Airlines logo]()
$900
This Avianca deal was found by Cheapflights users on 10/9. Clicking the “Pick Dates” 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 11/1010:30 pm -
1 stop14h 10m
Sat 11/147:25 am -
1 stop16h 05m
Deal found 10/9![Avianca logo]()
$911
This Mytrip deal was found by Cheapflights users on 10/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/1310:30 pm -
2 stops23h 50m
Mon 11/162:40 am -
2 stops20h 50m
Deal found 10/6![Multiple Airlines logo]()
$925
This Copa Airlines deal was found by Cheapflights users on 10/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/172:13 pm -
1 stop29h 07m
Mon 12/79:10 am -
1 stop18h 01m
Deal found 10/8![Copa Airlines logo]()
$914
This lol.travel deal was found by Cheapflights users on 10/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/267:35 am -
1 stop14h 17m
Tue 12/84:25 am -
1 stop22h 46m
Deal found 10/6![Copa Airlines logo]()
$894
This Cheapflightsfares deal was found by Cheapflights users on 10/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2610:00 am -
2 stops19h 30m
Wed 12/98:05 pm -
2 stops17h 20m
Deal found 10/5![LATAM Airlines logo]()
$962
This Kiwi.com deal was found by Cheapflights users on 10/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/2811:10 am -
1 stop13h 50m
Thu 12/1711:00 am -
1 stop14h 40m
Deal found 10/6![Arajet logo]()
$774
This LATAM Airlines deal was found by Cheapflights users on 10/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/288:04 am -
1 stop22h 36m
Sun 12/139:30 pm -
1 stop24h 39m
Deal found 10/6![LATAM Airlines logo]()
$926
This Mytrip deal was found by Cheapflights users on 10/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/2811:10 am -
3 stops30h 30m
Sat 12/55:10 pm -
2 stops32h 03m
Deal found 10/6![Multiple Airlines logo]()
$958
This Kiwi.com deal was found by Cheapflights users on 10/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/294:20 am -
1 stop14h 45m
Thu 12/1711:00 am -
1 stop14h 40m
Deal found 10/6![Arajet logo]()
$742
This Arajet deal was found by Cheapflights users on 10/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Arajet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/294:20 am -
1 stop24h 20m
Wed 12/1611:10 pm -
1 stop26h 30m
Deal found 10/6![Arajet logo]()
$919
This Kiwi.com deal was found by Cheapflights users on 10/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/307:59 am -
2 stops22h 33m
Thu 12/1711:00 am -
1 stop14h 40m
Deal found 10/6![Multiple Airlines logo]()
$780
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 10, 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 10, 2026.
This Kiwi.com deal was found by Cheapflights users on 10/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/96:00 am -
3 stops46h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/7![Multiple Airlines logo]()
$371
This Kiwi.com deal was found by Cheapflights users on 10/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/98:15 am -
3 stops23h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/6![Multiple Airlines logo]()
$378
This Kiwi.com deal was found by Cheapflights users on 10/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/237:49 am -
3 stops44h 41m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/6![Multiple Airlines logo]()
$382
This Kiwi.com deal was found by Cheapflights users on 10/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/3110:53 am -
3 stops38h 42m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/7![Multiple Airlines logo]()
$385
This Kiwi.com deal was found by Cheapflights users on 10/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/234:00 pm -
2 stops37h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/6![Multiple Airlines logo]()
$395
This Kiwi.com deal was found by Cheapflights users on 10/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/265:20 am -
2 stops37h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/4![Multiple Airlines logo]()
$398
This Kiwi.com deal was found by Cheapflights users on 10/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/66:00 am -
3 stops46h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/5![Multiple Airlines logo]()
$404
This Kiwi.com deal was found by Cheapflights users on 10/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/265:20 am -
1 stop14h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/4![Arajet logo]()
$405
This Kiwi.com deal was found by Cheapflights users on 10/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/218:04 am -
2 stops38h 47m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/7![Multiple Airlines logo]()
$414
This Kiwi.com deal was found by Cheapflights users on 10/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/115:45 am -
2 stops36h 18m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/5![Multiple Airlines logo]()
$414
This Kiwi.com deal was found by Cheapflights users on 10/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/244:00 pm -
2 stops56h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/6![Multiple Airlines logo]()
$416
This Kiwi.com deal was found by Cheapflights users on 10/9. Clicking the “Pick Dates” 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 1/85:45 am -
2 stops38h 34m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/9![Multiple Airlines logo]()
$423
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 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $702 (Kiwi.com) |
One-way from | $371 (Kiwi.com) |
Popular in | April |
Cheapest in | August |
Average price | $1,187 |
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 10, 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 - AEP Buenos Aires Jorge Newbery
ORDAEP
Chicago O'Hare Intl
Sun 2/14
4:20 am-8:40 pm
3 stops37h 20m
Buenos Aires Jorge Newbery
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$428
ChicagoBuenos Aires
ORD Chicago O'Hare Intl - AEP Buenos Aires Jorge Newbery
ORDAEP
Chicago O'Hare Intl
Fri 1/8
5:32 pm-7:30 am
3 stops58h 58m
Buenos Aires Jorge Newbery
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$446
ChicagoBuenos Aires
ORD Chicago O'Hare Intl - EZE Buenos Aires Ministro Pistarini
ORDEZE
Chicago O'Hare Intl
Mon 10/19
5:30 am-12:05 am
1 stop16h 35m
Buenos Aires Ministro Pistarini
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$448
ChicagoBuenos Aires
ORD Chicago O'Hare Intl - AEP Buenos Aires Jorge Newbery
ORDAEP
Chicago O'Hare Intl
Wed 3/17
6:00 am-7:30 am
3 stops47h 30m
Buenos Aires Jorge Newbery
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$455
ChicagoBuenos Aires
ORD Chicago O'Hare Intl - AEP Buenos Aires Jorge Newbery
ORDAEP
Chicago O'Hare Intl
Sun 1/10
4:20 am-3:30 pm
3 stops32h 10m
Buenos Aires Jorge Newbery
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$469
ChicagoBuenos Aires
ORD Chicago O'Hare Intl - EZE Buenos Aires Ministro Pistarini
ORDEZE
Chicago O'Hare Intl
Mon 11/23
7:35 am-4:25 am
1 stop17h 50m
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
Tue 1/5
12:27 am-12:52 am
1 stop21h 25m
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
Thu 12/31
2:13 pm-12:52 am
1 stop31h 39m
Buenos Aires Ministro Pistarini
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$538
ChicagoBuenos Aires
ORD Chicago O'Hare Intl - EZE Buenos Aires Ministro Pistarini
ORDEZE
Chicago O'Hare Intl
Wed 12/23
5:30 am-9:20 am
1 stop24h 50m
Buenos Aires Ministro Pistarini
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$541
ChicagoBuenos Aires
ORD Chicago O'Hare Intl - EZE Buenos Aires Ministro Pistarini
ORDEZE
Chicago O'Hare Intl
Fri 12/11
6:49 am-7:35 am
1 stop21h 46m
Buenos Aires Ministro Pistarini
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$541
Showing 1-10 of 39 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 Accuracy3 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, May is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Buenos Aires (average of $1,003). 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 $1,001 and $1,383 in December.The cheapest round-trip price found within the last 5 days was $702 on Multiple Airlines (Dec 3-Dec 17).
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 46 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 10, 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
Food
7.2
Boarding
8.1
Comfort
7.8
Overall
7.8
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,Oct 2026
JAC - ATL
Crew
8.5
Food
7.2
Boarding
8.1
Comfort
7.8
Overall
7.8
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,Oct 2026
JAC - ATL
Crew
8.5
Food
7.2
Boarding
8.1
Comfort
7.8
Overall
7.8
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,Oct 2026
JAC - ATL
Crew
8.5
Food
7.2
Boarding
8.1
Comfort
7.8
Overall
7.8
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,Oct 2026
JAC - ATL
Crew
8.5
Food
7.2
Boarding
8.1
Comfort
7.8
Overall
7.8
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,Oct 2026
JAC - 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.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Buenos Aires flight routes
Complete your trip
Flights by cabin class
Other flight options
Other flights from O'Hare Intl
Popular flights
Alternative routes for O'Hare Intl 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 October 10, 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 O'Hare Intl to Buenos Aires by cabin class
Find flights from O'Hare Intl to Buenos Aires, based on your preferred cabin class, be it economy, premium economy, business, or first class.
O'Hare Intl and Buenos Aires flights
Browse other O'Hare Intl and Buenos Aires flight options. Last updated on October 10, 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 10, 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 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$360 | Average$892 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$674 | Average$1,050 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$727 | Average$918 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$768 | Average$1,193 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$901 | Average$1,496 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$951 | Average$1,221 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$961 | Average$1,346 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$1,025 | Average$2,314 | FlexibilityNo cancel fee | On-timeN/A |