$220+ Cheap flights from Chicago (CHI) 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 11/8. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — BUE
Oct 3 — Oct 101
Round-trip
1 adult, Economy
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Find cheap flights from Chicago to Buenos Aires with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Chicago to Buenos Aires
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Cheapest flights from Chicago to Buenos AiresExplore the most affordable flight options available from Chicago to Buenos Aires. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 3, 2026.
Explore the most affordable flight options available from Chicago to Buenos Aires. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 3, 2026.
This CheapOair deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/83:20 am -
1 stop15h 45m
Thu 11/1211:00 am -
1 stop14h 40m
Deal found 9/2![Arajet logo]()
$520
This Kiwi.com deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” 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 11/83:20 am -
1 stop15h 45m
Thu 11/1911:00 am -
1 stop14h 40m
Deal found 9/3![Arajet logo]()
$655
This Kiwi.com deal was found by Cheapflights users on 8/30. Clicking the “Pick Dates” 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 10/195:30 am -
2 stops29h 35m
Thu 10/2211:00 am -
1 stop14h 40m
Deal found 8/30![Multiple Airlines logo]()
$663
This Kiwi.com deal was found by Cheapflights users on 8/30. Clicking the “Pick Dates” 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 10/195:30 am -
1 stop16h 35m
Thu 10/2211:00 am -
1 stop14h 40m
Deal found 8/30![Arajet logo]()
$706
This Arajet deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” 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 11/13:20 am -
1 stop15h 45m
Wed 11/410:05 pm -
1 stop27h 35m
Deal found 9/3![Arajet logo]()
$721
This Expedia deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/1410:27 am -
1 stop14h 18m
Thu 11/1911:00 am -
1 stop14h 40m
Deal found 9/1![Arajet logo]()
$723
This Kiwi.com deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” 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 11/65:45 am -
1 stop36h 10m
Thu 11/1911:00 am -
1 stop14h 40m
Deal found 9/3![Arajet logo]()
$725
This Arajet deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” 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.
Mon 10/264:30 am -
1 stop15h 35m
Thu 10/297:45 am -
1 stop17h 55m
Deal found 9/1![Arajet logo]()
$731
This Mytrip deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” 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 11/83:20 am -
1 stop15h 45m
Wed 11/114:30 am -
2 stops21h 10m
Deal found 9/2![Multiple Airlines logo]()
$745
This Kiwi.com deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” 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 11/83:20 am -
1 stop15h 45m
Sun 11/228:40 am -
1 stop15h 40m
Deal found 9/3![Arajet logo]()
$746
This eDestinos deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/215:30 am -
2 stops24h 51m
Wed 9/309:35 am -
2 stops41h 22m
Deal found 9/2![Multiple Airlines logo]()
$772
This Mytrip deal was found by Cheapflights users on 8/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/236:45 am -
2 stops26h 35m
Tue 11/109:30 pm -
2 stops26h 00m
Deal found 8/29![Multiple Airlines logo]()
$899
Best flights from Chicago to Buenos AiresDiscover carefully curated flight deals from Chicago to Buenos Aires that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 3, 2026.
Discover carefully curated flight deals from Chicago to Buenos Aires that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 3, 2026.
This Arajet deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” 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.
Mon 10/125:30 am -
1 stop26h 30m
Wed 10/2810:05 pm -
1 stop27h 35m
Deal found 9/3![Arajet logo]()
$938
This Copa Airlines deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/177:35 am -
1 stop14h 12m
Mon 12/72:34 pm -
1 stop25h 12m
Deal found 9/2![Copa Airlines logo]()
$1,088
This Delta deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” 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 11/3011:27 am -
1 stop19h 13m
Wed 12/29:30 pm -
1 stop17h 35m
Deal found 9/1![Delta logo]()
$1,100
This LATAM Airlines deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” 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 11/301:05 pm -
2 stops23h 55m
Thu 12/311:45 am -
2 stops25h 44m
Deal found 9/2![LATAM Airlines logo]()
$1,100
This Arajet deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Arajet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/306:45 am -
1 stop22h 00m
Sat 11/219:15 pm -
1 stop27h 05m
Deal found 9/1![Arajet logo]()
$1,016
This Copa Airlines deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/12:13 pm -
1 stop29h 11m
Thu 12/108:58 am -
1 stop30h 48m
Deal found 9/2![Copa Airlines logo]()
$1,088
This Delta deal was found by Cheapflights users on 8/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/271:00 pm -
1 stop18h 45m
Mon 10/58:10 pm -
1 stop15h 53m
Deal found 8/31![Delta logo]()
$1,100
This Arajet deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” 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 11/13:20 am -
1 stop15h 45m
Sat 11/149:15 pm -
1 stop27h 05m
Deal found 9/2![Arajet logo]()
$1,059
This Cheapflightsfares deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/138:04 am -
2 stops21h 26m
Fri 11/2710:35 am -
2 stops30h 30m
Deal found 9/3![LATAM Airlines logo]()
$1,186
This Copa Airlines deal was found by Cheapflights users on 8/30. Clicking the “Pick Dates” 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 stop17h 40m
Sun 11/153:40 am -
1 stop23h 31m
Deal found 8/30![Copa Airlines logo]()
$1,088
This Delta deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” 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 11/161:05 pm -
1 stop17h 35m
Thu 11/1911:35 pm -
1 stop13h 49m
Deal found 9/2![Delta logo]()
$1,100
This Arajet deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Arajet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/166:45 am -
1 stop24h 31m
Sat 10/311:30 am -
1 stop22h 50m
Deal found 9/3![Arajet logo]()
$1,068
This Delta deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/138:05 am -
1 stop23h 40m
Tue 9/298:10 pm -
1 stop15h 15m
Deal found 9/3![Delta logo]()
$1,100
This Delta deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” 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 2/155:30 am -
1 stop23h 05m
Tue 3/29:30 pm -
1 stop22h 07m
Deal found 9/2![Delta logo]()
$1,100
This Delta deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” 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 11/2310:35 am -
1 stop20h 05m
Fri 11/277:20 am -
2 stops19h 00m
Deal found 9/3![Delta logo]()
$1,100
This Delta deal was found by Cheapflights users on 8/29. Clicking the “Pick Dates” 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 11/211:38 am -
2 stops25h 22m
Fri 11/135:35 pm -
2 stops19h 49m
Deal found 8/29![Delta logo]()
$1,100
This Delta deal was found by Cheapflights users on 8/29. Clicking the “Pick Dates” 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 11/24:19 pm -
2 stops20h 41m
Thu 11/195:35 pm -
2 stops19h 49m
Deal found 8/29![Delta logo]()
$1,100
This Delta deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/314:19 pm -
2 stops37h 21m
Mon 11/168:05 pm -
2 stops29h 49m
Deal found 9/1![Delta logo]()
$1,100
This Delta deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/3111:33 am -
2 stops42h 07m
Thu 11/198:05 pm -
2 stops29h 49m
Deal found 9/1![Delta logo]()
$1,100
This Delta deal was found by Cheapflights users on 8/30. Clicking the “Pick Dates” 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 11/248:04 am -
2 stops20h 36m
Thu 12/33:50 pm -
2 stops19h 56m
Deal found 8/30![Delta logo]()
$1,100
This Delta deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/311:23 pm -
2 stops40h 17m
Sun 11/158:40 am -
2 stops33h 09m
Deal found 9/1![Delta logo]()
$1,100
This Delta deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/315:05 pm -
2 stops36h 35m
Wed 11/185:35 pm -
2 stops24h 14m
Deal found 9/1![Delta logo]()
$1,100
This Delta deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” 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 11/248:04 am -
2 stops20h 36m
Thu 11/265:35 pm -
2 stops18h 47m
Deal found 9/3![Delta logo]()
$1,100
This Delta deal was found by Cheapflights users on 8/30. Clicking the “Pick Dates” 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 10/198:05 am -
2 stops21h 35m
Mon 10/268:05 pm -
2 stops29h 52m
Deal found 8/30![Delta logo]()
$1,100
This Delta deal was found by Cheapflights users on 8/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/911:35 am -
2 stops20h 05m
Mon 9/148:10 pm -
2 stops18h 29m
Deal found 8/30![Delta logo]()
$1,104
This Delta deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” 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 11/121:05 pm -
2 stops17h 45m
Mon 11/169:30 pm -
1 stop15h 54m
Deal found 9/1![Delta logo]()
$1,104
This Delta deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/151:00 pm -
2 stops18h 40m
Tue 9/298:10 pm -
1 stop15h 39m
Deal found 9/1![Delta logo]()
$1,104
This Delta deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” 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 11/1411:27 am -
2 stops19h 23m
Thu 12/311:35 pm -
1 stop13h 54m
Deal found 9/2![Delta logo]()
$1,104
This Delta deal was found by Cheapflights users on 8/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/510:48 am -
2 stops20h 52m
Wed 10/78:10 pm -
2 stops18h 37m
Deal found 8/31![Delta logo]()
$1,104
This Delta deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/314:19 pm -
2 stops36h 01m
Fri 11/139:30 pm -
1 stop15h 54m
Deal found 9/1![Delta logo]()
$1,164
Last-minute flights from Chicago to Buenos AiresDiscover last-minute flight deals from Chicago to Buenos Aires. Data last updated September 3, 2026 and is based on user searches.
Discover last-minute flight deals from Chicago to Buenos Aires. Data last updated September 3, 2026 and is based on user searches.
This Flightnetwork deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1212:12 pm -
1 stop13h 58m
Fri 9/259:15 pm -
1 stop15h 57m
Deal found 9/2![Arajet logo]()
$759
This eDestinos deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/215:30 am -
2 stops24h 51m
Wed 9/309:35 am -
2 stops41h 22m
Deal found 9/2![Multiple Airlines logo]()
$772
This Kiwi.com deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/215:30 am -
2 stops37h 50m
Wed 9/309:15 pm -
1 stop28h 25m
Deal found 9/2![Multiple Airlines logo]()
$781
This Kiwi.com deal was found by Cheapflights users on 8/30. Clicking the “Pick Dates” 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 10/166:45 am -
1 stop24h 31m
Thu 10/2211:00 am -
1 stop14h 40m
Deal found 8/30![Arajet logo]()
$782
This Kiwi.com deal was found by Cheapflights users on 8/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1712:12 pm -
1 stop13h 58m
Thu 10/2211:00 am -
1 stop14h 40m
Deal found 8/30![Arajet logo]()
$812
This Mytrip deal was found by Cheapflights users on 8/30. Clicking the “Pick Dates” 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 10/1712:12 pm -
2 stops18h 18m
Sat 10/314:30 pm -
2 stops31h 00m
Deal found 8/30![Multiple Airlines logo]()
$995
This Kiwi.com deal was found by Cheapflights users on 8/30. Clicking the “Pick Dates” 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 10/195:30 am -
2 stops29h 35m
Thu 10/2211:00 am -
1 stop14h 40m
Deal found 8/30![Multiple Airlines logo]()
$663
This Kiwi.com deal was found by Cheapflights users on 8/30. Clicking the “Pick Dates” 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 10/195:30 am -
1 stop16h 35m
Thu 10/2211:00 am -
1 stop14h 40m
Deal found 8/30![Arajet logo]()
$706
This Kiwi.com deal was found by Cheapflights users on 8/30. Clicking the “Pick Dates” 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 10/208:04 am -
2 stops21h 53m
Thu 10/2211:00 am -
1 stop14h 40m
Deal found 8/30![Multiple Airlines logo]()
$788
This Mytrip deal was found by Cheapflights users on 8/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/236:45 am -
2 stops26h 35m
Tue 11/109:30 pm -
2 stops26h 00m
Deal found 8/29![Multiple Airlines logo]()
$899
This Arajet deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” 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.
Mon 10/264:30 am -
1 stop15h 35m
Thu 10/297:45 am -
1 stop17h 55m
Deal found 9/1![Arajet logo]()
$731
This Mytrip deal was found by Cheapflights users on 8/31. Clicking the “Pick Dates” 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 10/3111:27 am -
3 stops31h 13m
Tue 11/311:50 am -
2 stops35h 40m
Deal found 8/31![Multiple Airlines logo]()
$954
One-way flights from Chicago to Buenos AiresSearch for one-way flight options from Chicago to Buenos Aires. Find affordable one-way fares based on user searches. Data last updated September 3, 2026.
Search for one-way flight options from Chicago to Buenos Aires. Find affordable one-way fares based on user searches. Data last updated September 3, 2026.
This Jetabroad deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/83:20 am -
1 stop15h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Arajet logo]()
$220
This Kiwi.com deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” 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 9/145:30 am -
2 stops37h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Multiple Airlines logo]()
$267
This Kiwi.com deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” 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 10/195:30 am -
2 stops24h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/1![Multiple Airlines logo]()
$270
This Trip.com deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” 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.
Sun 11/293:20 am -
1 stop17h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Arajet logo]()
$290
This Kiwi.com deal was found by Cheapflights users on 8/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/3111:27 am -
2 stops38h 53m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 8/29![Multiple Airlines logo]()
$297
This Kiwi.com deal was found by Cheapflights users on 8/29. Clicking the “Pick Dates” 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 10/268:11 pm -
3 stops37h 09m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 8/29![Multiple Airlines logo]()
$351
This Kiwi.com deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” 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 2/283:20 am -
2 stops26h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Multiple Airlines logo]()
$359
This Kiwi.com deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” 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 2/283:20 am -
2 stops38h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Multiple Airlines logo]()
$365
This Kiwi.com deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” 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 10/67:35 am -
3 stops45h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Multiple Airlines logo]()
$369
This Trip.com deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/215:30 am -
2 stops37h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Multiple Airlines logo]()
$369
This Mytrip deal was found by Cheapflights users on 8/31. Clicking the “Pick Dates” 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 9/116:45 am -
1 stop22h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 8/31![Arajet logo]()
$372
This Kiwi.com deal was found by Cheapflights users on 8/30. Clicking the “Pick Dates” 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 stops24h 33m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 8/30![Multiple Airlines logo]()
$375
Find flight deals from Chicago to Buenos Aires
Discover tips and strategies to find the most affordable flight options for your journey from Chicago (CHI) to Buenos Aires (BUE). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 3, 2026.
Most accurate provider | Ovago 3 stars |
|---|---|
Most trusted provider | Ovago 3 stars |
Round-trip from | $520 (CheapOair) |
One-way from | $220 (Jetabroad) |
Popular in | February |
Cheapest in | April |
Average price | $1,105 |
Cheapflights Fare Finder
Customize your flight search to find flights from Chicago to Buenos Aires that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 3, 2026.
Use the filters below to find and compare flights from Chicago to Buenos Aires that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
ChicagoBuenos Aires
ORD Chicago O'Hare Intl - EZE Buenos Aires Ministro Pistarini
ORDEZE
Chicago O'Hare Intl
Fri 9/11
6:45 am-6:45 am
1 stop22h 00m
Buenos Aires Ministro Pistarini
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$410
ChicagoBuenos Aires
ORD Chicago O'Hare Intl - AEP Buenos Aires Jorge Newbery
ORDAEP
Chicago O'Hare Intl
Sun 1/31
3:20 am-9:20 pm
3 stops39h 00m
Buenos Aires Jorge Newbery
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$442
ChicagoBuenos Aires
MDW Chicago Midway - AEP Buenos Aires Jorge Newbery
MDWAEP
Chicago Midway
Mon 9/28
5:10 pm-11:30 am
3 stops40h 20m
Buenos Aires Jorge Newbery
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$443
ChicagoBuenos Aires
MDW Chicago Midway - AEP Buenos Aires Jorge Newbery
MDWAEP
Chicago Midway
Tue 9/8
6:05 am-8:30 am
3 stops24h 25m
Buenos Aires Jorge Newbery
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$449
ChicagoBuenos Aires
MDW Chicago Midway - AEP Buenos Aires Jorge Newbery
MDWAEP
Chicago Midway
Sat 9/12
6:25 am-8:30 am
3 stops48h 05m
Buenos Aires Jorge Newbery
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$464
ChicagoBuenos Aires
ORD Chicago O'Hare Intl - AEP Buenos Aires Jorge Newbery
ORDAEP
Chicago O'Hare Intl
Fri 12/11
6:15 am-2:00 pm
3 stops28h 45m
Buenos Aires Jorge Newbery
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$484
Quickest round-trip
ChicagoBuenos Aires
ORD Chicago O'Hare Intl - EZE Buenos Aires Ministro Pistarini
ORDEZE
Chicago O'Hare Intl
Tue 1/12
7:35 am-12:56 am
1 stop14h 21m
Buenos Aires Ministro Pistarini
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$503
ChicagoBuenos Aires
ORD Chicago O'Hare Intl - EZE Buenos Aires Ministro Pistarini
ORDEZE
Chicago O'Hare Intl
Thu 12/31
7:35 am-4:23 am
1 stop17h 48m
Buenos Aires Ministro Pistarini
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$503
ChicagoBuenos Aires
ORD Chicago O'Hare Intl - EZE Buenos Aires Ministro Pistarini
ORDEZE
Chicago O'Hare Intl
Thu 11/26
7:35 am-4:15 am
1 stop17h 40m
Buenos Aires Ministro Pistarini
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$503
ChicagoBuenos Aires
ORD Chicago O'Hare Intl - EZE Buenos Aires Ministro Pistarini
ORDEZE
Chicago O'Hare Intl
Tue 1/5
2:13 pm-12:56 am
1 stop31h 43m
Buenos Aires Ministro Pistarini
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$503
Showing 1-10 of 60 resultsSorted by cheapest first
Compare providers for flights from Chicago to Buenos Aires
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Chicago to Buenos Aires in 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 |
- Most accurate provider: When it comes to deals on Chicago-Buenos Aires flights, users find the pricing of Ovago to be most consistent on Cheapflights vs. Ovago Users can find the same prices on Chicago-Buenos Aires flight deals on Cheapflights vs. Ovago >95% of the time. Price accuracy is based on data collected from Chicago-Buenos Aires flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Chicago-Buenos Aires flights, Cheapflights users trust Ovago the most. Ovago has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Chicago-Buenos Aires flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Chicago to Buenos Aires
Have a flexible travel schedule? Discover the best time to fly to Buenos Aires from Chicago with our price prediction graph.
CHI-BUE
ORD-EZE
ORD-AEP
MDW-EZE
MDW-AEP
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Chicago to Buenos Aires
CHI-BUE
ORD-EZE
ORD-AEP
MDW-EZE
MDW-AEP
What is the cheapest month to book a flight from Chicago to Buenos Aires?
Currently, May is the cheapest month in which you can book a flight from Chicago to Buenos Aires (average of $980). Flying from Chicago to Buenos Aires in July is currently the most expensive (average of $1,306). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
How much does it cost to fly round-trip from Chicago to Buenos Aires?
Airfare is below average for this route at the moment.
Chicago to Buenos Aires flights typically cost between $995 and $1,285 in November.The cheapest round-trip price found within the last 5 days was $520 on Arajet (Nov 8-Nov 12).
How far ahead should I book a flight from Chicago to Buenos Aires?
The best time to book flights from Chicago to Buenos Aires is 50 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
Reviews of airlines servicing Buenos Aires
Get insights into the airlines that provide service to Buenos Aires. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Buenos Aires. Reviews last updated September 3, 2026.
Peruse reviews from past customers who have flown with Copa Airlines,LATAM Airlines, andUnited Airlines from Chicago to Buenos Aires to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
7.4
Crew
8.1
Overall
7.6
Entertainment
6.9
Food
6.9
Boarding
7.8
Reviews
1 / 20
2.0
MediocreAnonymous,Jul 2026
BOS - PTY
Comfort
7.4
Crew
8.1
Overall
7.6
Entertainment
6.9
Food
6.9
Boarding
7.8
Reviews
1 / 20
2.0
MediocreAnonymous,Jul 2026
BOS - PTY
Comfort
7.4
Crew
8.1
Overall
7.6
Entertainment
6.9
Food
6.9
Boarding
7.8
Reviews
1 / 20
2.0
MediocreAnonymous,Jul 2026
BOS - PTY
Comfort
7.4
Crew
8.1
Overall
7.6
Entertainment
6.9
Food
6.9
Boarding
7.8
Reviews
1 / 20
2.0
MediocreAnonymous,Jul 2026
BOS - PTY
Comfort
7.4
Crew
8.1
Overall
7.6
Entertainment
6.9
Food
6.9
Boarding
7.8
Reviews
1 / 20
2.0
MediocreAnonymous,Jul 2026
BOS - PTY
Comfort
7.4
Crew
8.1
Overall
7.6
Entertainment
6.9
Food
6.9
Boarding
7.8
Reviews
1 / 20
2.0
MediocreAnonymous,Jul 2026
BOS - PTY
Related info for your journey
Find useful and relevant information for your journey from Chicago to Buenos Aires. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
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Complete your trip
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Alternative routes for Chicago to Buenos Aires
See prices for flight routes from nearby airports that may be better suited for you.
Other flights to Buenos Aires
Explore flights to Buenos Aires departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 3, 2026.
Complete your trip
Complete your trip to Buenos Aires by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Chicago to Buenos Aires by cabin class
Find flights from Chicago to Buenos Aires, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Chicago and Buenos Aires flights
Browse other Chicago and Buenos Aires flight options. Last updated on September 3, 2026.
Other flights from Chicago
Browse through other flights departing from Chicago. Flights are based on user searches made on Cheapflights and were last updated on September 3, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 8 airlines flying from Chicago to Buenos Aires
Discover the top 8 airlines that operate flights from Chicago to Buenos Aires. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 3, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$360 | Average$901 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$727 | Average$918 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$768 | Average$1,038 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$792 | Average$1,111 | 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$968 | Average$1,339 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$1,025 | Average$2,313 | FlexibilityNo cancel fee | On-timeN/A |