$243+ 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 10/26. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BUE
Oct 13 — Oct 201
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 September 13, 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 September 13, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/264:30 am -
1 stop15h 35m
Wed 11/1111:10 pm -
1 stop26h 30m
Deal found 9/8![Arajet logo]()
$763
This Kiwi.com deal was found by Cheapflights users on 9/9. 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.
Mon 10/264:30 am -
1 stop15h 35m
Mon 11/211:05 pm -
2 stops45h 35m
Deal found 9/9![Multiple Airlines logo]()
$773
This Kiwi.com deal was found by Cheapflights users on 9/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/45:45 am -
1 stop22h 00m
Tue 12/154:55 pm -
2 stops32h 18m
Deal found 9/8![Multiple Airlines logo]()
$778
This Mytrip deal was found by Cheapflights users on 9/8. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/45:45 am -
1 stop22h 00m
Mon 12/144:55 pm -
2 stops32h 18m
Deal found 9/8![Multiple Airlines logo]()
$785
This Kiwi.com deal was found by Cheapflights users on 9/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/13:20 am -
1 stop17h 45m
Fri 11/205:20 am -
1 stop30h 37m
Deal found 9/8![Arajet logo]()
$798
This Kiwi.com deal was found by Cheapflights users on 9/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/264:30 am -
1 stop15h 35m
Wed 11/114:17 am -
2 stops22h 54m
Deal found 9/8![Multiple Airlines logo]()
$807
This Kiwi.com deal was found by Cheapflights users on 9/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/13:20 am -
1 stop17h 45m
Thu 11/1911:00 am -
1 stop14h 40m
Deal found 9/8![Arajet logo]()
$819
This Gotogate deal was found by Cheapflights users on 9/12. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/145:30 am -
1 stop16h 35m
Sat 9/262:45 am -
1 stop21h 25m
Deal found 9/12![Arajet logo]()
$823
This Trip.com deal was found by Cheapflights users on 9/8. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/26:20 am -
3 stops22h 25m
Sat 10/32:45 am -
3 stops47h 38m
Deal found 9/8![Multiple Airlines logo]()
$824
This Kiwi.com deal was found by Cheapflights users on 9/9. 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.
Mon 10/264:30 am -
1 stop15h 35m
Sat 10/311:30 am -
1 stop22h 50m
Deal found 9/9![Arajet logo]()
$827
This Kiwi.com deal was found by Cheapflights users on 9/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/13:20 am -
1 stop17h 45m
Mon 11/162:40 pm -
2 stops25h 11m
Deal found 9/8![Multiple Airlines logo]()
$831
This Avianca deal was found by Cheapflights users on 9/12. 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/2611:30 pm -
2 stops31h 50m
Thu 10/297:05 am -
1 stop16h 25m
Deal found 9/12![Avianca logo]()
$885
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 September 13, 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 September 13, 2026.
This Avianca deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” 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.
Mon 10/2611:30 pm -
2 stops31h 50m
Thu 10/297:05 am -
1 stop16h 25m
Deal found 9/10![Avianca logo]()
$952
This Copa Airlines deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” 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 9/11![Copa Airlines logo]()
$1,084
This United Airlines deal was found by Cheapflights users on 9/8. 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.
Wed 11/252:22 pm -
1 stop15h 58m
Wed 12/210:05 pm -
1 stop15h 05m
Deal found 9/8![United Airlines logo]()
$1,100
This Delta deal was found by Cheapflights users on 9/9. 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.
Tue 11/178:04 am -
2 stops20h 36m
Mon 12/75:35 pm -
2 stops18h 47m
Deal found 9/9![Delta logo]()
$1,148
This Copa Airlines deal was found by Cheapflights users on 9/12. 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 Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/127:35 am -
1 stop16h 35m
Sun 11/154:25 am -
1 stop22h 46m
Deal found 9/12![Copa Airlines logo]()
$1,084
This United Airlines deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” 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 10/146:25 am -
1 stop23h 35m
Tue 10/209:00 pm -
1 stop16h 16m
Deal found 9/10![United Airlines logo]()
$1,100
This FlightHub deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1710:30 pm -
1 stop28h 10m
Mon 12/77:05 am -
1 stop16h 25m
Deal found 9/11![Avianca logo]()
$1,108
This Delta deal was found by Cheapflights users on 9/8. 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.
Thu 11/2610:00 am -
2 stops18h 40m
Tue 12/15:35 pm -
2 stops18h 47m
Deal found 9/8![Delta logo]()
$1,148
This Copa Airlines deal was found by Cheapflights users on 9/12. 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 Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/27:35 am -
1 stop17h 23m
Mon 11/169:10 am -
1 stop30h 36m
Deal found 9/12![Copa Airlines logo]()
$1,084
This United Airlines deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” 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 10/147:30 am -
1 stop22h 30m
Sun 10/189:00 pm -
1 stop15h 13m
Deal found 9/10![United Airlines logo]()
$1,100
This Delta deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” 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 11/129:51 am -
2 stops18h 49m
Mon 11/165:35 pm -
2 stops18h 47m
Deal found 9/10![Delta logo]()
$1,148
This Copa Airlines deal was found by Cheapflights users on 9/12. 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 Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/12:13 pm -
1 stop14h 47m
Wed 12/94:25 am -
1 stop22h 46m
Deal found 9/12![Copa Airlines logo]()
$1,084
This Delta deal was found by Cheapflights users on 9/8. 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.
Sun 10/115:27 am -
2 stops24h 13m
Thu 10/156:20 pm -
2 stops19h 53m
Deal found 9/8![Delta logo]()
$1,148
This Delta deal was found by Cheapflights users on 9/9. 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.
Tue 12/18:04 am -
2 stops20h 36m
Thu 12/105:35 pm -
2 stops19h 50m
Deal found 9/9![Delta logo]()
$1,148
Last-minute flights from O'Hare Intl to Buenos AiresDiscover last-minute flight deals from O'Hare Intl to Buenos Aires. Data last updated September 13, 2026 and is based on user searches.
Discover last-minute flight deals from O'Hare Intl to Buenos Aires. Data last updated September 13, 2026 and is based on user searches.
This Gotogate deal was found by Cheapflights users on 9/12. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/145:30 am -
1 stop16h 35m
Sat 9/262:45 am -
1 stop21h 25m
Deal found 9/12![Arajet logo]()
$823
This Trip.com deal was found by Cheapflights users on 9/8. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/26:20 am -
3 stops22h 25m
Sat 10/32:45 am -
3 stops47h 38m
Deal found 9/8![Multiple Airlines logo]()
$824
This Mytrip deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” 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 10/55:30 am -
2 stops26h 56m
Wed 10/149:00 pm -
2 stops26h 20m
Deal found 9/10![Multiple Airlines logo]()
$943
This Booking.com deal was found by Cheapflights users on 9/9. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/195:30 am -
1 stop16h 35m
Fri 10/304:45 am -
1 stop31h 12m
Deal found 9/9![Arajet logo]()
$843
This Kiwi.com deal was found by Cheapflights users on 9/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/264:30 am -
1 stop15h 35m
Wed 11/1111:10 pm -
1 stop26h 30m
Deal found 9/8![Arajet logo]()
$763
This Kiwi.com deal was found by Cheapflights users on 9/9. 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.
Mon 10/264:30 am -
1 stop15h 35m
Mon 11/211:05 pm -
2 stops45h 35m
Deal found 9/9![Multiple Airlines logo]()
$773
This Kiwi.com deal was found by Cheapflights users on 9/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/264:30 am -
1 stop15h 35m
Wed 11/114:17 am -
2 stops22h 54m
Deal found 9/8![Multiple Airlines logo]()
$807
This Kiwi.com deal was found by Cheapflights users on 9/9. 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.
Mon 10/264:30 am -
1 stop15h 35m
Sat 10/311:30 am -
1 stop22h 50m
Deal found 9/9![Arajet logo]()
$827
This Kiwi.com deal was found by Cheapflights users on 9/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/264:30 am -
1 stop15h 35m
Sun 11/1512:20 pm -
2 stops23h 57m
Deal found 9/8![Multiple Airlines logo]()
$835
This Kiwi.com deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” 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 10/264:30 am -
1 stop15h 35m
Sun 11/12:40 pm -
2 stops49h 11m
Deal found 9/10![Multiple Airlines logo]()
$844
This Kiwi.com deal was found by Cheapflights users on 9/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/264:30 am -
1 stop15h 35m
Sat 11/142:40 pm -
2 stops32h 19m
Deal found 9/8![Multiple Airlines logo]()
$845
This Avianca deal was found by Cheapflights users on 9/12. 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/2611:30 pm -
2 stops31h 50m
Thu 10/297:05 am -
1 stop16h 25m
Deal found 9/12![Avianca logo]()
$885
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 September 13, 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 September 13, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/264:30 am -
1 stop15h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Arajet logo]()
$243
This Kiwi.com deal was found by Cheapflights users on 9/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/13:20 am -
1 stop17h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Arajet logo]()
$277
This Kiwi.com deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” 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 -
2 stops33h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Multiple Airlines logo]()
$282
This Kiwi.com deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” 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 -
3 stops38h 33m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Multiple Airlines logo]()
$320
This Trip.com deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/15:45 am -
2 stops44h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Multiple Airlines logo]()
$329
This Trip.com deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/15:45 am -
2 stops42h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Multiple Airlines logo]()
$331
This Kiwi.com deal was found by Cheapflights users on 9/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/14:20 am -
2 stops26h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/12![Multiple Airlines logo]()
$334
This Mytrip deal was found by Cheapflights users on 9/8. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/65:45 am -
1 stop24h 31m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Arajet logo]()
$335
This Booking.com deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” 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.
Sun 11/293:20 am -
1 stop27h 12m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/11![Arajet logo]()
$336
This Kiwi.com deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” 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 12/64:20 am -
1 stop18h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Arajet logo]()
$337
This Kiwi.com deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” 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
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Multiple Airlines logo]()
$339
This Kiwi.com deal was found by Cheapflights users on 9/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/14:20 am -
2 stops29h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/12![Multiple Airlines logo]()
$342
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 September 13, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $763 (Kiwi.com) |
One-way from | $243 (Kiwi.com) |
Popular in | April |
Cheapest in | August |
Average price | $1,223 |
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 September 13, 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
Mon 10/5
5:30 am-2:40 pm
2 stops31h 10m
Buenos Aires Jorge Newbery
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$364
ChicagoBuenos Aires
ORD Chicago O'Hare Intl - AEP Buenos Aires Jorge Newbery
ORDAEP
Chicago O'Hare Intl
Mon 9/28
5:30 am-9:31 am
2 stops26h 01m
Buenos Aires Jorge Newbery
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$389
ChicagoBuenos Aires
ORD Chicago O'Hare Intl - EZE Buenos Aires Ministro Pistarini
ORDEZE
Chicago O'Hare Intl
Mon 9/28
5:30 am-1:05 pm
2 stops29h 35m
Buenos Aires Ministro Pistarini
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$425
ChicagoBuenos Aires
ORD Chicago O'Hare Intl - EZE Buenos Aires Ministro Pistarini
ORDEZE
Chicago O'Hare Intl
Sun 12/13
3:20 am-1:45 am
1 stop19h 25m
Buenos Aires Ministro Pistarini
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$430
ChicagoBuenos Aires
ORD Chicago O'Hare Intl - AEP Buenos Aires Jorge Newbery
ORDAEP
Chicago O'Hare Intl
Sat 9/26
12:12 pm-9:55 am
2 stops19h 43m
Buenos Aires Jorge Newbery
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$434
ChicagoBuenos Aires
ORD Chicago O'Hare Intl - EZE Buenos Aires Ministro Pistarini
ORDEZE
Chicago O'Hare Intl
Sat 2/20
10:27 am-4:00 am
1 stop14h 33m
Buenos Aires Ministro Pistarini
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$476
ChicagoBuenos Aires
ORD Chicago O'Hare Intl - AEP Buenos Aires Jorge Newbery
ORDAEP
Chicago O'Hare Intl
Sun 12/27
3:20 am-9:00 am
2 stops26h 40m
Buenos Aires Jorge Newbery
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$482
ChicagoBuenos Aires
ORD Chicago O'Hare Intl - AEP Buenos Aires Jorge Newbery
ORDAEP
Chicago O'Hare Intl
Sun 10/18
6:10 am-9:00 pm
3 stops36h 50m
Buenos Aires Jorge Newbery
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$502
ChicagoBuenos Aires
ORD Chicago O'Hare Intl - EZE Buenos Aires Ministro Pistarini
ORDEZE
Chicago O'Hare Intl
Sun 3/7
2:13 pm-12:38 am
1 stop31h 25m
Buenos Aires Ministro Pistarini
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$503
ChicagoBuenos Aires
ORD Chicago O'Hare Intl - AEP Buenos Aires Jorge Newbery
ORDAEP
Chicago O'Hare Intl
Thu 10/29
6:08 pm-7:40 am
2 stops35h 32m
Buenos Aires Jorge Newbery
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$503
Showing 1-10 of 37 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 September.
| 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, November is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Buenos Aires (average of $952). 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 $1,163 and $1,380 in October.The cheapest round-trip price found within the last 5 days was $763 on Arajet (Oct 26-Nov 11).
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 September 13, 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.
Entertainment
7.8
Boarding
8.1
Overall
7.8
Crew
8.5
Comfort
7.8
Food
7.2
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
Entertainment
7.8
Boarding
8.1
Overall
7.8
Crew
8.5
Comfort
7.8
Food
7.2
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
Entertainment
7.8
Boarding
8.1
Overall
7.8
Crew
8.5
Comfort
7.8
Food
7.2
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
Entertainment
7.8
Boarding
8.1
Overall
7.8
Crew
8.5
Comfort
7.8
Food
7.2
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
Entertainment
7.8
Boarding
8.1
Overall
7.8
Crew
8.5
Comfort
7.8
Food
7.2
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
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 September 13, 2026.
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Search flights from O'Hare Intl to Buenos Aires by cabin class
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O'Hare Intl and Buenos Aires flights
Browse other O'Hare Intl and Buenos Aires flight options. Last updated on September 13, 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 September 13, 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 September 13, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$360 | Average$892 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$727 | Average$918 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$768 | Average$1,063 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$792 | Average$1,111 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$901 | Average$1,496 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$951 | Average$1,221 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$961 | Average$1,337 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$1,025 | Average$2,313 | FlexibilityNo cancel fee | On-timeN/A |