$892+ Cheap flights from St. Louis (STL) to Argentina
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 6/4. Fares are subject to change and may not be available on all flights or dates of travel.
STL — EZE
May 26 — Jun 21
Round-trip
1 adult, Economy
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Cheapest flights from St. Louis to ArgentinaExplore the most affordable flight options available from St. Louis to Argentina. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 26, 2026.
Explore the most affordable flight options available from St. Louis to Argentina. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 26, 2026.
This lol.travel deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/45:20 pm
STL
- EZE
1 stop14h 25m
LATAM Airlines
Thu 6/188:10 pm
EZE
- STL
1 stop14h 06m
LATAM Airlines
Deal found 4/26![LATAM Airlines logo]()
$892
This LATAM Airlines deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/410:49 am
STL
- AEP
2 stops18h 51m
LATAM Airlines
Thu 6/182:55 pm
AEP
- STL
2 stops19h 21m
LATAM Airlines
Deal found 4/26![LATAM Airlines logo]()
$911
This Delta deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/45:20 pm
STL
- EZE
2 stops14h 00m
Delta
Thu 6/1810:40 pm
EZE
- STL
2 stops21h 27m
Delta
Deal found 4/26![Delta logo]()
$913
This KAYAK deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/96:59 pm
STL
- AEP
2 stops18h 01m
LATAM Airlines
Mon 11/238:05 pm
AEP
- STL
2 stops17h 43m
LATAM Airlines
Deal found 4/23![LATAM Airlines logo]()
$1,020
This KAYAK deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/114:13 pm
STL
- EZE
1 stop15h 02m
LATAM Airlines
Thu 11/197:45 am
EZE
- STL
2 stops18h 54m
LATAM Airlines
Deal found 4/23![LATAM Airlines logo]()
$1,020
This Delta deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/126:59 pm
STL
- AEP
2 stops18h 01m
Delta
Wed 11/258:05 pm
AEP
- STL
2 stops17h 43m
Delta
Deal found 4/23![Delta logo]()
$1,028
This Delta deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/126:59 pm
STL
- EZE
2 stops16h 46m
Delta
Tue 11/247:45 am
EZE
- STL
2 stops18h 54m
Delta
Deal found 4/23![Delta logo]()
$1,028
This LATAM Airlines deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/612:59 pm
STL
- EZE
2 stops18h 21m
LATAM Airlines
Sat 6/1310:40 pm
EZE
- STL
2 stops21h 27m
LATAM Airlines
Deal found 4/22![LATAM Airlines logo]()
$1,033
This Delta deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/156:59 pm
STL
- EZE
1 stop35h 41m
Delta
Wed 11/258:55 pm
EZE
- STL
1 stop16h 53m
Delta
Deal found 4/23![Delta logo]()
$1,035
This Expedia deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/126:59 pm
STL
- EZE
2 stops28h 46m
LATAM Airlines
Sun 11/223:45 pm
EZE
- STL
2 stops29h 16m
LATAM Airlines
Deal found 4/23![LATAM Airlines logo]()
$1,059
This KAYAK deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/124:40 pm
STL
- EZE
1 stop14h 00m
LATAM Airlines
Fri 11/203:35 pm
EZE
- STL
2 stops19h 37m
LATAM Airlines
Deal found 4/23![LATAM Airlines logo]()
$1,060
This LATAM Airlines deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/114:13 pm
STL
- EZE
1 stop15h 02m
LATAM Airlines
Sat 11/2111:35 pm
EZE
- STL
1 stop14h 13m
LATAM Airlines
Deal found 4/23![LATAM Airlines logo]()
$1,068
Best flights from St. Louis to ArgentinaDiscover carefully curated flight deals from St. Louis to Argentina that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 26, 2026.
Discover carefully curated flight deals from St. Louis to Argentina that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 26, 2026.
This LATAM Airlines deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/410:49 am
STL
- AEP
2 stops18h 51m
LATAM Airlines
Thu 6/182:55 pm
AEP
- STL
2 stops19h 21m
LATAM Airlines
Deal found 4/26![LATAM Airlines logo]()
$911
This Delta deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/45:20 pm
STL
- EZE
2 stops14h 00m
Delta
Thu 6/1810:40 pm
EZE
- STL
2 stops21h 27m
Delta
Deal found 4/26![Delta logo]()
$913
This Mytrip deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/12:15 pm
STL
- EZE
3 stops35h 30m
Multiple Airlines
Tue 6/97:10 am
EZE
- STL
3 stops30h 56m
Multiple Airlines
Deal found 4/25![Multiple Airlines logo]()
$1,183
This United Airlines deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/128:35 am
STL
- EZE
1 stop21h 25m
United Airlines
Tue 8/189:00 pm
EZE
- STL
1 stop15h 09m
United Airlines
Deal found 4/24![United Airlines logo]()
$1,293
This LATAM Airlines deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/612:59 pm
STL
- EZE
2 stops18h 21m
LATAM Airlines
Sat 6/1310:40 pm
EZE
- STL
2 stops21h 27m
LATAM Airlines
Deal found 4/22![LATAM Airlines logo]()
$1,033
This Mytrip deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/62:15 pm
STL
- EZE
3 stops33h 05m
Multiple Airlines
Sat 6/137:10 am
EZE
- STL
3 stops30h 56m
Multiple Airlines
Deal found 4/22![Multiple Airlines logo]()
$1,186
This KAYAK deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/15:20 pm
STL
- EZE
1 stop14h 25m
LATAM Airlines
Mon 6/83:55 am
EZE
- STL
2 stops22h 01m
LATAM Airlines
Deal found 4/25![LATAM Airlines logo]()
$1,119
This United Airlines deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/3011:10 am
STL
- EZE
1 stop18h 50m
United Airlines
Thu 6/49:00 pm
EZE
- STL
1 stop15h 07m
United Airlines
Deal found 4/23![United Airlines logo]()
$1,448
This KAYAK deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/15:20 pm
STL
- AEP
2 stops20h 40m
LATAM Airlines
Tue 6/98:05 pm
AEP
- STL
2 stops18h 29m
LATAM Airlines
Deal found 4/25![LATAM Airlines logo]()
$1,204
This Mytrip deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/317:05 am
STL
- EZE
3 stops30h 35m
Multiple Airlines
Sun 6/78:40 am
EZE
- STL
3 stops29h 36m
Multiple Airlines
Deal found 4/24![Multiple Airlines logo]()
$1,387
This KAYAK deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/307:05 pm
STL
- AEP
2 stops18h 55m
Delta
Thu 6/43:45 pm
AEP
- STL
2 stops19h 59m
Delta
Deal found 4/22![Delta logo]()
$1,627
This KAYAK deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/125:30 pm
STL
- AEP
2 stops20h 30m
LATAM Airlines
Tue 8/185:35 pm
AEP
- STL
2 stops19h 06m
LATAM Airlines
Deal found 4/24![LATAM Airlines logo]()
$1,285
This Delta deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/229:13 am
STL
- AEP
2 stops20h 27m
Delta
Fri 5/298:05 pm
AEP
- STL
2 stops20h 43m
Delta
Deal found 4/24![Delta logo]()
$1,638
This Mytrip deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/42:15 pm
STL
- AEP
2 stops21h 05m
Multiple Airlines
Thu 6/187:00 am
AEP
- STL
3 stops31h 21m
Multiple Airlines
Deal found 4/26![Multiple Airlines logo]()
$1,603
This LATAM Airlines deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/225:20 pm
STL
- AEP
2 stops20h 40m
LATAM Airlines
Fri 5/295:35 pm
AEP
- STL
2 stops20h 19m
LATAM Airlines
Deal found 4/24![LATAM Airlines logo]()
$1,377
This LATAM Airlines deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/317:01 pm
STL
- EZE
1 stop12h 44m
LATAM Airlines
Sun 6/78:10 pm
EZE
- STL
1 stop15h 36m
LATAM Airlines
Deal found 4/24![LATAM Airlines logo]()
$1,377
This LATAM Airlines deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/261:27 pm
STL
- EZE
2 stops17h 53m
LATAM Airlines
Sun 5/311:10 pm
EZE
- STL
2 stops22h 34m
LATAM Airlines
Deal found 4/24![LATAM Airlines logo]()
$1,423
This KAYAK deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/266:57 pm
STL
- AEP
2 stops19h 03m
LATAM Airlines
Sun 5/318:05 pm
AEP
- STL
2 stops18h 15m
LATAM Airlines
Deal found 4/24![LATAM Airlines logo]()
$1,439
This KAYAK deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/304:00 pm
STL
- AEP
2 stops24h 30m
LATAM Airlines
Thu 6/42:55 pm
AEP
- STL
2 stops29h 01m
LATAM Airlines
Deal found 4/23![LATAM Airlines logo]()
$1,553
This LATAM Airlines deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/101:27 pm
STL
- AEP
2 stops23h 23m
LATAM Airlines
Thu 5/148:40 am
AEP
- STL
2 stops29h 40m
LATAM Airlines
Deal found 4/24![LATAM Airlines logo]()
$1,640
This Justfly.com deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/2210:49 am
STL
- AEP
2 stops18h 51m
LATAM Airlines
Mon 5/253:45 pm
AEP
- STL
2 stops19h 59m
LATAM Airlines
Deal found 4/23![LATAM Airlines logo]()
$1,775
Last-minute flights from St. Louis to ArgentinaDiscover last-minute flight deals from St. Louis to Argentina. Data last updated April 26, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Argentina. Data last updated April 26, 2026 and is based on user searches.
This LATAM Airlines deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/255:00 pm
STL
- EZE
2 stops23h 21m
Multiple Airlines
Sat 5/21:10 pm
EZE
- STL
2 stops23h 24m
Multiple Airlines
Deal found 4/24![Multiple Airlines logo]()
$1,481
This LATAM Airlines deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/225:20 pm
STL
- AEP
2 stops20h 40m
LATAM Airlines
Fri 5/295:35 pm
AEP
- STL
2 stops20h 19m
LATAM Airlines
Deal found 4/24![LATAM Airlines logo]()
$1,377
This LATAM Airlines deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/225:20 pm
STL
- EZE
1 stop14h 25m
LATAM Airlines
Fri 5/298:10 pm
EZE
- STL
1 stop14h 38m
LATAM Airlines
Deal found 4/24![LATAM Airlines logo]()
$1,377
This Booking.com deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/227:05 am
STL
- EZE
2 stops29h 25m
Air Canada
Mon 5/254:35 pm
EZE
- STL
3 stops53h 50m
Air Canada
Deal found 4/23![Air Canada logo]()
$1,439
This Kiwi.com deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/226:00 am
STL
- EZE
2 stops20h 31m
Multiple Airlines
Mon 5/258:25 am
EZE
- STL
1 stop32h 14m
Multiple Airlines
Deal found 4/23![Multiple Airlines logo]()
$1,484
This United Airlines deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/226:14 am
STL
- EZE
1 stop23h 46m
United Airlines
Mon 5/259:00 pm
EZE
- STL
1 stop15h 07m
United Airlines
Deal found 4/23![United Airlines logo]()
$1,487
This LATAM Airlines deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/261:27 pm
STL
- EZE
1 stop18h 18m
LATAM Airlines
Sun 5/311:10 pm
EZE
- STL
2 stops22h 34m
LATAM Airlines
Deal found 4/24![LATAM Airlines logo]()
$1,423
This KAYAK deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/266:57 pm
STL
- AEP
2 stops19h 03m
LATAM Airlines
Sun 5/318:05 pm
AEP
- STL
2 stops18h 15m
LATAM Airlines
Deal found 4/24![LATAM Airlines logo]()
$1,439
This LATAM Airlines deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/295:20 pm
STL
- EZE
2 stops14h 00m
LATAM Airlines
Fri 6/51:10 pm
EZE
- STL
2 stops24h 44m
LATAM Airlines
Deal found 4/24![LATAM Airlines logo]()
$1,321
This Mytrip deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/292:15 pm
STL
- EZE
3 stops33h 05m
Multiple Airlines
Fri 6/54:00 am
EZE
- STL
3 stops34h 06m
Multiple Airlines
Deal found 4/24![Multiple Airlines logo]()
$1,346
This United Airlines deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/3011:10 am
STL
- EZE
1 stop18h 50m
United Airlines
Thu 6/49:00 pm
EZE
- STL
1 stop15h 07m
United Airlines
Deal found 4/23![United Airlines logo]()
$1,448
This Mytrip deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/317:05 am
STL
- EZE
3 stops30h 35m
Multiple Airlines
Sun 6/78:40 am
EZE
- STL
3 stops29h 36m
Multiple Airlines
Deal found 4/24![Multiple Airlines logo]()
$1,387
Find flight deals from St. Louis to Argentina
Keep the following information in mind while searching for St. Louis to Argentina flight deals. Data was last updated April 26, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $973 (KAYAK) |
Popular in | May |
Cheapest in | October |
Average price | $1,227 |
Cheapflights Fare Finder
Customize your flight search to find flights from St. Louis to Argentina 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 2,558,603 searches. Data last updated April 26, 2026.
Use the filters below to find and compare flights from St. Louis to Argentina that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
St. LouisBuenos Aires
STL - AEP
STLAEP
Lambert-St Louis
Thu 6/4
10:49 am-7:40 am
2 stops18h 51m
Buenos Aires Jorge Newbery
Thu 6/18
2:55 pm-8:16 am
2 stops19h 21m
$911
St. LouisBuenos Aires
STL - EZE
STLEZE
Lambert-St Louis
Thu 6/4
5:20 pm-9:20 am
2 stops14h 00m
Buenos Aires Ministro Pistarini
Thu 6/18
10:40 pm-6:07 pm
2 stops21h 27m
$913
St. LouisBuenos Aires
STL - EZE
STLEZE
Lambert-St Louis
Sat 6/6
12:59 pm-9:20 am
2 stops18h 21m
Buenos Aires Ministro Pistarini
Sat 6/13
10:40 pm-6:07 pm
2 stops21h 27m
$1,033
St. LouisBuenos Aires
STL - EZE
STLEZE
Lambert-St Louis
Mon 6/1
5:20 pm-9:45 am
1 stop14h 25m
Buenos Aires Ministro Pistarini
Mon 6/8
3:55 am-11:56 pm
2 stops22h 01m
$1,119
St. LouisBuenos Aires
STL - EZE
STLEZE
Lambert-St Louis
Mon 6/1
2:15 pm-3:45 am
3 stops35h 30m
Buenos Aires Ministro Pistarini
Tue 6/9
7:10 am-12:06 pm
3 stops30h 56m
$1,183
St. LouisBuenos Aires
STL - EZE
STLEZE
Lambert-St Louis
Sat 6/6
2:15 pm-1:20 am
3 stops33h 05m
Buenos Aires Ministro Pistarini
Sat 6/13
7:10 am-12:06 pm
3 stops30h 56m
$1,186
St. LouisBuenos Aires
STL - AEP
STLAEP
Lambert-St Louis
Mon 6/1
5:20 pm-4:00 pm
2 stops20h 40m
Buenos Aires Jorge Newbery
Tue 6/9
8:05 pm-12:34 pm
2 stops18h 29m
$1,204
St. LouisBuenos Aires
STL - AEP
STLAEP
Lambert-St Louis
Wed 8/12
5:30 pm-4:00 pm
2 stops20h 30m
Buenos Aires Jorge Newbery
Tue 8/18
5:35 pm-10:41 am
2 stops19h 06m
$1,285
St. LouisBuenos Aires
STL - EZE
STLEZE
Lambert-St Louis
Wed 8/12
8:35 am-8:00 am
1 stop21h 25m
Buenos Aires Ministro Pistarini
Tue 8/18
9:00 pm-10:09 am
1 stop15h 09m
$1,293
St. LouisBuenos Aires
STL - AEP
STLAEP
Lambert-St Louis
Fri 5/22
5:20 pm-4:00 pm
2 stops20h 40m
Buenos Aires Jorge Newbery
Fri 5/29
5:35 pm-11:54 am
2 stops20h 19m
$1,377
Showing 1-10 of 21 resultsSorted by cheapest first
Best time to book a flight from St. Louis to Argentina
Have a flexible travel schedule? Discover the best time to fly to Argentina from St. Louis with our price prediction graph.
STL-EZE
STL-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 St. Louis to Argentina
STL-AR0
STL-EZE
STL-AEP
What is the cheapest month to book a flight from St. Louis to Argentina?
Currently, October is the cheapest month in which you can book a flight from St. Louis to Argentina (average of $829). Flying from St. Louis to Argentina in August is currently the most expensive (average of $1,365). 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.
Reviews of airlines servicing Argentina
Get insights into the airlines that provide service to Argentina. 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 Argentina. Reviews last updated April 26, 2026.
Get a feel of what it's like to fly with Delta,LATAM Airlines, andAmerican Airlines from St. Louis to Argentina by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Comfort
7.9
Crew
8.5
Overall
7.9
Entertainment
7.8
Food
7.2
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Boarding
8.1
Comfort
7.9
Crew
8.5
Overall
7.9
Entertainment
7.8
Food
7.2
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Boarding
8.1
Comfort
7.9
Crew
8.5
Overall
7.9
Entertainment
7.8
Food
7.2
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Boarding
8.1
Comfort
7.9
Crew
8.5
Overall
7.9
Entertainment
7.8
Food
7.2
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Related info for your journey
Find useful and relevant information for your journey from St. Louis to Argentina. 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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Alternative routes for St. Louis to Argentina
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Complete your trip
Complete your trip to Argentina by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from St. Louis to Argentina by cabin class
Find flights from St. Louis to Argentina, based on your preferred cabin class, be it economy, premium economy, business, or first class.
St. Louis and Argentina flights
Browse other St. Louis and Argentina flight options. Last updated on April 26, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 2 airlines flying from St. Louis to Argentina
Discover the top 2 airlines that operate flights from St. Louis to Argentina. 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 2,558,603 searches. Data last updated April 26, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$884 | Average$1,109 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$1,025 | Average$1,377 | FlexibilityNo cancel fee | On-timeN/A |