$339+ 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 11/29. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — BUE
Dec 9 — Dec 161
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
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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 November 9, 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 November 9, 2026.
This CheapOair deal was found by Cheapflights users on 11/5. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/311:35 am -
1 stop19h 05m
Thu 12/179:30 pm -
1 stop22h 35m
Deal found 11/5![LATAM Airlines logo]()
$908
This Delta deal was found by Cheapflights users on 11/9. 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.
Mon 11/1611:27 am -
1 stop19h 13m
Wed 12/29:30 pm -
1 stop17h 34m
Deal found 11/9![Delta logo]()
$910
This American Airlines deal was found by Cheapflights users on 11/9. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/162:38 pm -
1 stop15h 02m
Wed 12/29:10 pm -
1 stop15h 32m
Deal found 11/9![American Airlines logo]()
$910
This Avianca deal was found by Cheapflights users on 11/6. 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/110:30 pm -
1 stop14h 10m
Wed 12/91:40 am -
1 stop21h 50m
Deal found 11/6![Avianca logo]()
$911
This Copa Airlines deal was found by Cheapflights users on 11/5. 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 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 11/5![Copa Airlines logo]()
$914
This LATAM Airlines deal was found by Cheapflights users on 11/8. 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 11/161:05 pm -
1 stop17h 35m
Wed 12/27:35 pm -
2 stops17h 53m
Deal found 11/8![LATAM Airlines logo]()
$919
This LATAM Airlines deal was found by Cheapflights users on 11/8. 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 11/161:30 pm -
1 stop17h 10m
Wed 12/27:35 pm -
2 stops17h 50m
Deal found 11/8![LATAM Airlines logo]()
$919
This Delta deal was found by Cheapflights users on 11/5. 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.
Fri 12/411:28 am -
1 stop17h 07m
Mon 12/1411:35 pm -
1 stop13h 53m
Deal found 11/5![Delta logo]()
$926
This United Airlines deal was found by Cheapflights users on 11/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/32:22 pm -
1 stop13h 58m
Thu 12/1710:05 pm -
1 stop21h 20m
Deal found 11/9![United Airlines logo]()
$926
This LATAM Airlines deal was found by Cheapflights users on 11/5. 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 LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/306:00 am -
2 stops25h 30m
Thu 12/33:50 pm -
2 stops21h 38m
Deal found 11/5![LATAM Airlines logo]()
$926
This LATAM Airlines deal was found by Cheapflights users on 11/4. 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 LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/309:51 am -
2 stops20h 49m
Fri 12/410:35 am -
2 stops25h 51m
Deal found 11/4![LATAM Airlines logo]()
$926
This Delta deal was found by Cheapflights users on 11/4. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/52:35 pm -
2 stops16h 15m
Sun 12/139:30 pm -
2 stops16h 29m
Deal found 11/4![Delta logo]()
$930
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 November 9, 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 November 9, 2026.
This Copa Airlines deal was found by Cheapflights users on 11/6. 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 Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/17:35 am -
1 stop14h 18m
Sat 3/610:45 am -
1 stop15h 59m
Deal found 11/6![Copa Airlines logo]()
$914
This Delta deal was found by Cheapflights users on 11/8. 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 1/245:45 pm -
1 stop12h 55m
Wed 2/39:30 pm -
1 stop15h 34m
Deal found 11/8![Delta logo]()
$926
This United Airlines deal was found by Cheapflights users on 11/8. 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.
Thu 2/257:00 am -
1 stop23h 20m
Sun 2/2811:55 pm -
1 stop21h 11m
Deal found 11/8![United Airlines logo]()
$926
This Expedia deal was found by Cheapflights users on 11/9. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/206:00 am -
2 stops25h 50m
Mon 3/291:10 pm -
2 stops24h 46m
Deal found 11/9![LATAM Airlines logo]()
$957
This Mytrip deal was found by Cheapflights users on 11/7. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3012:25 am -
3 stops28h 15m
Sat 1/169:30 pm -
2 stops27h 50m
Deal found 11/7![Multiple Airlines logo]()
$1,265
This Copa Airlines deal was found by Cheapflights users on 11/8. 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 12/12:17 pm -
1 stop14h 43m
Wed 12/94:28 am -
1 stop22h 43m
Deal found 11/8![Copa Airlines logo]()
$914
This Delta deal was found by Cheapflights users on 11/8. 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.
Sat 1/235:14 pm -
1 stop13h 26m
Thu 2/411:35 pm -
1 stop20h 19m
Deal found 11/8![Delta logo]()
$926
This United Airlines deal was found by Cheapflights users on 11/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/32:22 pm -
1 stop13h 58m
Thu 12/1710:05 pm -
1 stop21h 20m
Deal found 11/9![United Airlines logo]()
$926
This Delta deal was found by Cheapflights users on 11/9. 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 12/811:28 am -
1 stop19h 12m
Tue 12/1511:35 pm -
1 stop15h 29m
Deal found 11/9![Delta logo]()
$926
This United Airlines deal was found by Cheapflights users on 11/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/23:55 pm -
1 stop14h 25m
Tue 2/1611:55 pm -
1 stop15h 24m
Deal found 11/9![United Airlines logo]()
$926
This Delta deal was found by Cheapflights users on 11/5. 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 3/93:00 pm -
1 stop15h 40m
Thu 3/1811:35 pm -
1 stop23h 35m
Deal found 11/5![Delta logo]()
$926
This United Airlines deal was found by Cheapflights users on 11/6. 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.
Mon 11/3010:34 am -
1 stop17h 46m
Sat 12/1211:55 pm -
1 stop23h 00m
Deal found 11/6![United Airlines logo]()
$926
This LATAM Airlines deal was found by Cheapflights users on 11/8. 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.
Wed 4/2810:35 am -
2 stops19h 05m
Fri 5/78:40 am -
2 stops27h 12m
Deal found 11/8![LATAM Airlines logo]()
$1,216
This Delta deal was found by Cheapflights users on 11/9. 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 2/249:48 am -
1 stop20h 52m
Tue 3/28:05 pm -
1 stop19h 23m
Deal found 11/9![Delta logo]()
$926
This United Airlines deal was found by Cheapflights users on 11/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/207:00 am -
1 stop23h 20m
Sun 2/2810:05 pm -
1 stop16h 09m
Deal found 11/9![United Airlines logo]()
$926
This Delta deal was found by Cheapflights users on 11/5. 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.
Mon 3/810:40 am -
1 stop21h 15m
Thu 3/1811:35 pm -
1 stop20h 57m
Deal found 11/5![Delta logo]()
$926
This Delta deal was found by Cheapflights users on 11/5. 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 3/95:55 pm -
2 stops19h 05m
Thu 3/188:05 pm -
2 stops22h 32m
Deal found 11/5![Delta logo]()
$926
This Delta deal was found by Cheapflights users on 11/8. 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 12/13:59 pm -
2 stops19h 01m
Thu 12/108:05 pm -
2 stops19h 19m
Deal found 11/8![Delta logo]()
$926
This Delta deal was found by Cheapflights users on 11/9. 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 3/169:30 am -
2 stops28h 30m
Tue 3/235:35 pm -
2 stops40h 59m
Deal found 11/9![Delta logo]()
$926
This Delta deal was found by Cheapflights users on 11/5. 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.
Mon 3/85:55 pm -
2 stops19h 05m
Tue 3/168:05 pm -
2 stops19h 15m
Deal found 11/5![Delta logo]()
$926
This LATAM Airlines deal was found by Cheapflights users on 11/7. 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 LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/2212:55 pm -
2 stops22h 45m
Tue 12/293:50 pm -
2 stops20h 23m
Deal found 11/7![LATAM Airlines logo]()
$1,847
This Delta deal was found by Cheapflights users on 11/5. 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.
Mon 3/15:49 pm -
1 stop12h 51m
Sat 3/611:35 pm -
2 stops15h 58m
Deal found 11/5![Delta logo]()
$930
This Delta deal was found by Cheapflights users on 11/5. 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.
Wed 12/29:37 am -
2 stops18h 58m
Tue 12/1511:35 pm -
1 stop13h 53m
Deal found 11/5![Delta logo]()
$930
This Delta deal was found by Cheapflights users on 11/8. 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.
Sat 1/169:38 am -
2 stops18h 57m
Sun 1/2411:35 pm -
2 stops21h 25m
Deal found 11/8![Delta logo]()
$930
This Delta deal was found by Cheapflights users on 11/5. 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.
Mon 3/19:55 am -
2 stops20h 45m
Sat 3/68:05 pm -
1 stop16h 19m
Deal found 11/5![Delta logo]()
$930
This Delta deal was found by Cheapflights users on 11/7. 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.
Thu 12/39:59 am -
2 stops20h 51m
Thu 12/179:30 pm -
2 stops16h 29m
Deal found 11/7![Delta logo]()
$930
This Delta deal was found by Cheapflights users on 11/6. 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 3/165:55 pm -
2 stops20h 05m
Thu 3/188:05 pm -
2 stops22h 32m
Deal found 11/6![Delta logo]()
$976
This Delta deal was found by Cheapflights users on 11/9. 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 3/204:30 pm -
1 stop13h 05m
Mon 3/298:10 pm -
1 stop22h 15m
Deal found 11/9![Delta logo]()
$1,071
This Delta deal was found by Cheapflights users on 11/5. 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.
Mon 1/49:50 am -
2 stops18h 50m
Wed 1/205:35 pm -
2 stops19h 35m
Deal found 11/5![Delta logo]()
$1,071
This Delta deal was found by Cheapflights users on 11/8. 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.
Mon 1/41:59 pm -
2 stops16h 51m
Wed 1/2011:35 pm -
2 stops21h 25m
Deal found 11/8![Delta logo]()
$1,075
Last-minute flights from Chicago to Buenos AiresDiscover last-minute flight deals from Chicago to Buenos Aires. Data last updated November 9, 2026 and is based on user searches.
Discover last-minute flight deals from Chicago to Buenos Aires. Data last updated November 9, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 11/9. 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.
Mon 11/1611:27 am -
1 stop19h 13m
Wed 12/29:30 pm -
1 stop17h 34m
Deal found 11/9![Delta logo]()
$910
This American Airlines deal was found by Cheapflights users on 11/9. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/163:00 pm -
1 stop14h 15m
Wed 12/29:40 pm -
2 stops16h 54m
Deal found 11/9![American Airlines logo]()
$910
This LATAM Airlines deal was found by Cheapflights users on 11/8. 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 11/161:05 pm -
1 stop17h 35m
Wed 12/27:35 pm -
2 stops17h 53m
Deal found 11/8![LATAM Airlines logo]()
$919
This LATAM Airlines deal was found by Cheapflights users on 11/8. 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 11/161:30 pm -
1 stop17h 10m
Wed 12/27:35 pm -
2 stops17h 50m
Deal found 11/8![LATAM Airlines logo]()
$919
This Copa Airlines deal was found by Cheapflights users on 11/5. 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 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 11/5![Copa Airlines logo]()
$914
This LATAM Airlines deal was found by Cheapflights users on 11/5. 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 LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/306:00 am -
2 stops25h 30m
Thu 12/33:50 pm -
2 stops21h 38m
Deal found 11/5![LATAM Airlines logo]()
$926
This LATAM Airlines deal was found by Cheapflights users on 11/4. 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 LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/309:51 am -
2 stops20h 49m
Fri 12/410:35 am -
2 stops25h 51m
Deal found 11/4![LATAM Airlines logo]()
$926
This Avianca deal was found by Cheapflights users on 11/6. 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/110:30 pm -
1 stop14h 10m
Wed 12/91:40 am -
1 stop21h 50m
Deal found 11/6![Avianca logo]()
$911
This CheapOair deal was found by Cheapflights users on 11/5. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/311:35 am -
1 stop19h 05m
Thu 12/179:30 pm -
1 stop22h 35m
Deal found 11/5![LATAM Airlines logo]()
$908
This United Airlines deal was found by Cheapflights users on 11/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/32:22 pm -
1 stop13h 58m
Thu 12/1710:05 pm -
1 stop21h 20m
Deal found 11/9![United Airlines logo]()
$926
This Delta deal was found by Cheapflights users on 11/5. 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.
Fri 12/411:28 am -
1 stop17h 07m
Mon 12/1411:35 pm -
1 stop13h 53m
Deal found 11/5![Delta logo]()
$926
This Delta deal was found by Cheapflights users on 11/4. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/52:35 pm -
2 stops16h 15m
Sun 12/139:30 pm -
2 stops16h 29m
Deal found 11/4![Delta logo]()
$930
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 November 9, 2026.
Search for one-way flight options from Chicago to Buenos Aires. Find affordable one-way fares based on user searches. Data last updated November 9, 2026.
This eDestinos deal was found by Cheapflights users on 11/8. 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 eDestinos 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 12/3112:00 am -
Nonstop0h 00m
Deal found 11/8![Arajet logo]()
$339
This Kiwi.com deal was found by Cheapflights users on 11/8. 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 1/34:20 am -
2 stops39h 59m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/8![Multiple Airlines logo]()
$381
This Arajet deal was found by Cheapflights users on 11/8. 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 Arajet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/511:10 am -
1 stop13h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/8![Arajet logo]()
$383
This Kiwi.com deal was found by Cheapflights users on 11/9. 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.
Sat 12/512:28 pm -
3 stops40h 02m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/9![Multiple Airlines logo]()
$395
This Kiwi.com deal was found by Cheapflights users on 11/9. 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.
Sat 12/57:25 am -
3 stops45h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/9![Multiple Airlines logo]()
$401
This Kiwi.com deal was found by Cheapflights users on 11/9. 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.
Tue 12/84:00 pm -
3 stops39h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/9![Multiple Airlines logo]()
$408
This Kiwi.com deal was found by Cheapflights users on 11/9. 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 12/77:25 am -
3 stops45h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/9![Multiple Airlines logo]()
$408
This Kiwi.com deal was found by Cheapflights users on 11/5. 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.
Thu 12/38:30 am -
3 stops41h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/5![Multiple Airlines logo]()
$410
This Kiwi.com deal was found by Cheapflights users on 11/9. 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.
Sat 12/512:28 pm -
2 stops27h 47m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/9![Multiple Airlines logo]()
$413
This Kiwi.com deal was found by Cheapflights users on 11/9. 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 12/410:29 am -
3 stops42h 01m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/9![Multiple Airlines logo]()
$415
This Arajet deal was found by Cheapflights users on 11/8. 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 Arajet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/45:45 am -
1 stop24h 47m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/8![Arajet logo]()
$416
This Kiwi.com deal was found by Cheapflights users on 11/6. 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 12/295:59 pm -
3 stops58h 31m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/6![Multiple Airlines logo]()
$418
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 November 9, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $870 (Mytrip) |
One-way from | $339 (eDestinos) |
Popular in | December |
Cheapest in | May |
Average price | $1,170 |
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 November 9, 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
MDW Chicago Midway - AEP Buenos Aires Jorge Newbery
MDWAEP
Chicago Midway
Sat 12/5
12:28 pm-7:30 am
3 stops40h 02m
Buenos Aires Jorge Newbery
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$395
ChicagoBuenos Aires
ORD Chicago O'Hare Intl - AEP Buenos Aires Jorge Newbery
ORDAEP
Chicago O'Hare Intl
Mon 12/7
7:25 am-7:30 am
3 stops45h 05m
Buenos Aires Jorge Newbery
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$413
ChicagoBuenos Aires
ORD Chicago O'Hare Intl - EZE Buenos Aires Ministro Pistarini
ORDEZE
Chicago O'Hare Intl
Fri 12/4
5:45 am-9:32 am
1 stop24h 47m
Buenos Aires Ministro Pistarini
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$424
ChicagoBuenos Aires
ORD Chicago O'Hare Intl - AEP Buenos Aires Jorge Newbery
ORDAEP
Chicago O'Hare Intl
Sun 3/14
12:17 am-7:30 am
3 stops53h 13m
Buenos Aires Jorge Newbery
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$426
ChicagoBuenos Aires
ORD Chicago O'Hare Intl - EZE Buenos Aires Ministro Pistarini
ORDEZE
Chicago O'Hare Intl
Sat 11/14
6:15 pm-7:35 am
1 stop34h 20m
Buenos Aires Ministro Pistarini
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$436
ChicagoBuenos Aires
MDW Chicago Midway - EZE Buenos Aires Ministro Pistarini
MDWEZE
Chicago Midway
Mon 12/7
5:02 pm-10:55 am
3 stops38h 53m
Buenos Aires Ministro Pistarini
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$445
ChicagoBuenos Aires
MDW Chicago Midway - AEP Buenos Aires Jorge Newbery
MDWAEP
Chicago Midway
Mon 3/15
7:07 pm-9:30 am
3 stops36h 23m
Buenos Aires Jorge Newbery
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$453
ChicagoBuenos Aires
MDW Chicago Midway - AEP Buenos Aires Jorge Newbery
MDWAEP
Chicago Midway
Mon 12/7
5:02 pm-7:30 am
3 stops59h 28m
Buenos Aires Jorge Newbery
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$456
ChicagoBuenos Aires
ORD Chicago O'Hare Intl - EZE Buenos Aires Ministro Pistarini
ORDEZE
Chicago O'Hare Intl
Sat 12/12
10:00 am-7:35 am
3 stops42h 35m
Buenos Aires Ministro Pistarini
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$468
ChicagoBuenos Aires
ORD Chicago O'Hare Intl - AEP Buenos Aires Jorge Newbery
ORDAEP
Chicago O'Hare Intl
Fri 12/4
10:29 am-7:30 am
3 stops42h 01m
Buenos Aires Jorge Newbery
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$469
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 November.
| 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 Accuracy2 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Chicago-Buenos Aires flight deals on Cheapflights vs. FlightHub >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 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-Buenos Aires flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Chicago to Buenos Aires
Have a flexible travel schedule? Discover the best time to fly to Buenos Aires from Chicago with our price prediction graph.
CHI-BUE
ORD-EZE
MDW-EZE
MDW-AEP
ORD-AEP
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Chicago to Buenos Aires
CHI-BUE
ORD-EZE
MDW-EZE
MDW-AEP
ORD-AEP
What is the cheapest month to book a flight from Chicago to Buenos Aires?
Currently, April is the cheapest month in which you can book a flight from Chicago to Buenos Aires (average of $984). Flying from Chicago to Buenos Aires in July is currently the most expensive (average of $1,313). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
How much does it cost to fly round-trip from Chicago to Buenos Aires?
Airfare is below average for this route at the moment.
Chicago to Buenos Aires flights typically cost between $1,043 and $1,227 in April.The cheapest round-trip price found within the last 5 days was $876 on Arajet (Apr 5-Apr 16).
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 November 9, 2026.
Peruse reviews from past customers who have flown with Delta,LATAM Airlines, andAmerican Airlines from Chicago to Buenos Aires to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
7.8
Entertainment
7.8
Crew
8.5
Overall
7.8
Boarding
8.1
Food
7.2
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Comfort
7.8
Entertainment
7.8
Crew
8.5
Overall
7.8
Boarding
8.1
Food
7.2
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Comfort
7.8
Entertainment
7.8
Crew
8.5
Overall
7.8
Boarding
8.1
Food
7.2
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Comfort
7.8
Entertainment
7.8
Crew
8.5
Overall
7.8
Boarding
8.1
Food
7.2
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Comfort
7.8
Entertainment
7.8
Crew
8.5
Overall
7.8
Boarding
8.1
Food
7.2
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Related info for your journey
Find useful and relevant information for your journey from 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
Buenos Aires flight routes
Complete your trip
Flights by cabin class
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Other flights from Chicago
Popular flights
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 November 9, 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 November 9, 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 November 9, 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 November 9, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$576 | Average$907 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$727 | Average$954 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$770 | Average$1,285 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$792 | Average$1,108 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$925 | Average$1,436 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$1,004 | Average$1,345 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$1,015 | Average$1,265 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$1,025 | Average$2,314 | FlexibilityNo cancel fee | On-timeN/A |