$376+ Cheap flights from St. Louis (STL) to Argentina
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/10. Fares are subject to change and may not be available on all flights or dates of travel.
STL — EZE
Mar 29 — Apr 51
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from St. Louis to Argentina 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 St. Louis to Argentina
Cheapest
Best
Last-minute
One-way
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 February 27, 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 February 27, 2026.
This LATAM Airlines deal was found by Cheapflights users on 2/24. 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 3/247:03 am
STL
- AEP
2 stops22h 52m
LATAM Airlines
Tue 3/313:45 pm
AEP
- STL
2 stops19h 20m
LATAM Airlines
Deal found 2/24![LATAM Airlines logo]()
$937
This BusinessClass deal was found by Cheapflights users on 2/24. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/245:21 pm
STL
- EZE
1 stop13h 39m
LATAM Airlines
Tue 3/3111:55 am
EZE
- STL
2 stops23h 10m
LATAM Airlines
Deal found 2/24![LATAM Airlines logo]()
$958
This United Airlines deal was found by Cheapflights users on 2/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/314:49 pm
STL
- EZE
1 stop13h 11m
United Airlines
Thu 5/79:00 pm
EZE
- STL
2 stops26h 08m
United Airlines
Deal found 2/26![United Airlines logo]()
$996
This Ovago deal was found by Cheapflights users on 2/23. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/15:15 pm
STL
- EZE
1 stop14h 30m
LATAM Airlines
Mon 6/158:10 pm
EZE
- STL
1 stop13h 57m
LATAM Airlines
Deal found 2/23![LATAM Airlines logo]()
$1,038
This BusinessClass deal was found by Cheapflights users on 2/26. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/315:21 pm
STL
- EZE
1 stop14h 24m
LATAM Airlines
Thu 5/78:10 pm
EZE
- STL
1 stop15h 34m
LATAM Airlines
Deal found 2/26![LATAM Airlines logo]()
$1,046
This KAYAK deal was found by Cheapflights users on 2/23. 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 7/235:30 pm
STL
- EZE
1 stop14h 15m
LATAM Airlines
Mon 8/38:10 pm
EZE
- STL
1 stop13h 57m
LATAM Airlines
Deal found 2/23![LATAM Airlines logo]()
$1,065
This KAYAK deal was found by Cheapflights users on 2/26. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/104:40 pm
STL
- EZE
2 stops19h 05m
LATAM Airlines
Sat 12/193:45 pm
EZE
- STL
2 stops22h 03m
LATAM Airlines
Deal found 2/26![LATAM Airlines logo]()
$1,079
This LATAM Airlines deal was found by Cheapflights users on 2/25. 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 LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/31:30 pm
STL
- AEP
2 stops17h 10m
LATAM Airlines
Sat 12/122:55 pm
AEP
- STL
2 stops22h 53m
LATAM Airlines
Deal found 2/25![LATAM Airlines logo]()
$1,087
This Delta deal was found by Cheapflights users on 2/25. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/37:20 am
STL
- EZE
2 stops19h 45m
Delta
Sat 12/1210:15 pm
EZE
- STL
1 stop21h 51m
Delta
Deal found 2/25![Delta logo]()
$1,087
This Ovago deal was found by Cheapflights users on 2/23. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/245:30 pm
STL
- EZE
2 stops16h 52m
LATAM Airlines
Mon 8/38:10 pm
EZE
- STL
1 stop13h 57m
LATAM Airlines
Deal found 2/23![LATAM Airlines logo]()
$1,090
This BusinessClass deal was found by Cheapflights users on 2/25. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/2412:04 pm
STL
- EZE
1 stop18h 56m
LATAM Airlines
Sat 4/48:10 pm
EZE
- STL
1 stop14h 37m
LATAM Airlines
Deal found 2/25![LATAM Airlines logo]()
$1,104
This LATAM Airlines deal was found by Cheapflights users on 2/24. 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.
Thu 4/304:41 pm
STL
- AEP
2 stops24h 59m
LATAM Airlines
Mon 5/48:05 pm
AEP
- STL
2 stops23h 39m
LATAM Airlines
Deal found 2/24![LATAM Airlines logo]()
$1,143
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 February 27, 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 February 27, 2026.
This LATAM Airlines deal was found by Cheapflights users on 2/24. 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 3/247:03 am
STL
- AEP
2 stops22h 52m
LATAM Airlines
Tue 3/313:45 pm
AEP
- STL
2 stops19h 20m
LATAM Airlines
Deal found 2/24![LATAM Airlines logo]()
$937
This United Airlines deal was found by Cheapflights users on 2/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/314:49 pm
STL
- EZE
1 stop13h 11m
United Airlines
Thu 5/79:00 pm
EZE
- STL
2 stops26h 08m
United Airlines
Deal found 2/26![United Airlines logo]()
$996
This KAYAK deal was found by Cheapflights users on 2/23. 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.
Fri 7/245:30 pm
STL
- EZE
1 stop14h 15m
LATAM Airlines
Mon 8/38:10 pm
EZE
- STL
1 stop16h 35m
LATAM Airlines
Deal found 2/23![LATAM Airlines logo]()
$1,105
This United Airlines deal was found by Cheapflights users on 2/27. Clicking the “Pick Dates” 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 4/1310:00 am
STL
- EZE
2 stops20h 00m
United Airlines
Mon 4/209:00 pm
EZE
- STL
1 stop14h 25m
United Airlines
Deal found 2/27![United Airlines logo]()
$1,122
This LATAM Airlines deal was found by Cheapflights users on 2/23. 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.
Thu 4/306:50 pm
STL
- AEP
2 stops19h 10m
LATAM Airlines
Mon 5/45:35 pm
AEP
- STL
2 stops18h 59m
LATAM Airlines
Deal found 2/23![LATAM Airlines logo]()
$1,143
This United Airlines deal was found by Cheapflights users on 2/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/128:15 pm
STL
- EZE
2 stops33h 45m
United Airlines
Sun 4/199:00 pm
EZE
- STL
1 stop27h 28m
United Airlines
Deal found 2/26![United Airlines logo]()
$1,176
This LATAM Airlines deal was found by Cheapflights users on 2/25. 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 LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/187:01 pm
STL
- AEP
2 stops19h 59m
LATAM Airlines
Thu 5/213:45 pm
AEP
- STL
2 stops19h 59m
LATAM Airlines
Deal found 2/25![LATAM Airlines logo]()
$1,143
This United Airlines deal was found by Cheapflights users on 2/24. 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.
Fri 4/1010:09 am
STL
- EZE
1 stop19h 51m
United Airlines
Fri 4/179:00 pm
EZE
- STL
1 stop14h 25m
United Airlines
Deal found 2/24![United Airlines logo]()
$1,202
This LATAM Airlines deal was found by Cheapflights users on 2/26. 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 4/301:02 pm
STL
- EZE
1 stop18h 43m
LATAM Airlines
Mon 5/48:10 pm
EZE
- STL
1 stop14h 20m
LATAM Airlines
Deal found 2/26![LATAM Airlines logo]()
$1,143
This United Airlines deal was found by Cheapflights users on 2/25. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/237:22 am
STL
- EZE
2 stops46h 38m
United Airlines
Mon 8/39:00 pm
EZE
- STL
1 stop22h 42m
United Airlines
Deal found 2/25![United Airlines logo]()
$1,205
This LATAM Airlines deal was found by Cheapflights users on 2/27. Clicking the “Pick Dates” 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 4/134:41 pm
STL
- AEP
2 stops21h 19m
LATAM Airlines
Mon 4/205:05 pm
AEP
- STL
2 stops19h 29m
LATAM Airlines
Deal found 2/27![LATAM Airlines logo]()
$1,197
This United Airlines deal was found by Cheapflights users on 2/25. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/238:00 am
STL
- EZE
2 stops46h 00m
United Airlines
Sun 8/29:00 pm
EZE
- STL
2 stops41h 11m
United Airlines
Deal found 2/25![United Airlines logo]()
$1,215
This Expedia deal was found by Cheapflights users on 2/26. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/126:59 pm
STL
- AEP
2 stops34h 41m
LATAM Airlines
Sun 4/198:05 pm
AEP
- STL
2 stops16h 29m
LATAM Airlines
Deal found 2/26![LATAM Airlines logo]()
$1,235
This lastminute.com deal was found by Cheapflights users on 2/24. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/1012:04 pm
STL
- AEP
2 stops17h 36m
LATAM Airlines
Fri 4/178:05 pm
AEP
- STL
2 stops25h 06m
LATAM Airlines
Deal found 2/24![LATAM Airlines logo]()
$1,273
This LATAM Airlines deal was found by Cheapflights users on 2/26. 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 7/97:05 pm
STL
- AEP
2 stops18h 55m
LATAM Airlines
Sat 7/115:35 pm
AEP
- STL
2 stops19h 10m
LATAM Airlines
Deal found 2/26![LATAM Airlines logo]()
$1,392
This LATAM Airlines deal was found by Cheapflights users on 2/25. 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 LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/247:03 am
STL
- AEP
2 stops22h 52m
LATAM Airlines
Sat 4/43:45 pm
AEP
- STL
2 stops21h 24m
LATAM Airlines
Deal found 2/25![LATAM Airlines logo]()
$1,480
This LATAM Airlines deal was found by Cheapflights users on 2/25. 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 LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/2311:51 am
STL
- AEP
2 stops18h 39m
LATAM Airlines
Mon 8/38:05 pm
AEP
- STL
2 stops29h 33m
LATAM Airlines
Deal found 2/25![LATAM Airlines logo]()
$1,495
Last-minute flights from St. Louis to ArgentinaDiscover last-minute flight deals from St. Louis to Argentina. Data last updated February 27, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Argentina. Data last updated February 27, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 2/24. 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.
Sun 3/87:41 am
STL
- EZE
2 stops46h 39m
United Airlines
Tue 3/179:05 pm
EZE
- STL
1 stop14h 16m
United Airlines
Deal found 2/24![United Airlines logo]()
$1,120
This American Airlines deal was found by Cheapflights users on 2/24. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/82:19 pm
STL
- EZE
2 stops18h 10m
American Airlines
Tue 3/1711:30 pm
EZE
- STL
2 stops18h 05m
American Airlines
Deal found 2/24![American Airlines logo]()
$1,126
This BusinessClass deal was found by Cheapflights users on 2/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/84:21 pm
STL
- EZE
1 stop12h 59m
LATAM Airlines
Tue 3/178:55 pm
EZE
- STL
1 stop16h 14m
LATAM Airlines
Deal found 2/27![LATAM Airlines logo]()
$1,254
This KAYAK deal was found by Cheapflights users on 2/25. 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.
Sun 3/812:04 pm
STL
- AEP
2 stops17h 51m
LATAM Airlines
Tue 3/175:00 pm
AEP
- STL
2 stops20h 09m
LATAM Airlines
Deal found 2/25![LATAM Airlines logo]()
$1,424
This LATAM Airlines deal was found by Cheapflights users on 2/24. 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 3/247:03 am
STL
- AEP
2 stops22h 52m
LATAM Airlines
Tue 3/313:45 pm
AEP
- STL
2 stops19h 20m
LATAM Airlines
Deal found 2/24![LATAM Airlines logo]()
$937
This BusinessClass deal was found by Cheapflights users on 2/24. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/245:21 pm
STL
- EZE
1 stop13h 39m
LATAM Airlines
Tue 3/3111:55 am
EZE
- STL
2 stops23h 10m
LATAM Airlines
Deal found 2/24![LATAM Airlines logo]()
$958
This BusinessClass deal was found by Cheapflights users on 2/25. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/2412:04 pm
STL
- EZE
1 stop18h 56m
LATAM Airlines
Sat 4/48:10 pm
EZE
- STL
1 stop14h 37m
LATAM Airlines
Deal found 2/25![LATAM Airlines logo]()
$1,104
This American Airlines deal was found by Cheapflights users on 2/24. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/245:15 am
STL
- EZE
1 stop23h 55m
American Airlines
Tue 3/3111:30 pm
EZE
- STL
1 stop26h 28m
American Airlines
Deal found 2/24![American Airlines logo]()
$1,156
This Mytrip deal was found by Cheapflights users on 2/24. 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.
Tue 3/244:05 pm
STL
- EZE
2 stops21h 05m
Multiple Airlines
Tue 3/317:35 am
EZE
- STL
3 stops33h 49m
Multiple Airlines
Deal found 2/24![Multiple Airlines logo]()
$1,216
This United Airlines deal was found by Cheapflights users on 2/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/314:49 pm
STL
- EZE
1 stop13h 11m
United Airlines
Thu 5/79:00 pm
EZE
- STL
2 stops26h 08m
United Airlines
Deal found 2/26![United Airlines logo]()
$996
This BusinessClass deal was found by Cheapflights users on 2/26. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/315:21 pm
STL
- EZE
1 stop14h 24m
LATAM Airlines
Thu 5/78:10 pm
EZE
- STL
1 stop15h 34m
LATAM Airlines
Deal found 2/26![LATAM Airlines logo]()
$1,046
This Air Canada deal was found by Cheapflights users on 2/26. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/314:05 pm
STL
- EZE
2 stops20h 25m
Air Canada
Thu 5/74:35 pm
EZE
- STL
3 stops29h 50m
Air Canada
Deal found 2/26![Air Canada logo]()
$1,150
One-way flights from St. Louis to ArgentinaSearch for one-way flight options from St. Louis to Argentina. Find affordable one-way fares based on user searches. Data last updated February 27, 2026.
Search for one-way flight options from St. Louis to Argentina. Find affordable one-way fares based on user searches. Data last updated February 27, 2026.
This Kiwi.com deal was found by Cheapflights users on 2/24. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/108:16 pm
STL
- AEP
3 stops34h 14m
Multiple Airlines
Deal found 2/24![Multiple Airlines logo]()
$376
This Kiwi.com deal was found by Cheapflights users on 2/26. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/243:48 pm
STL
- EZE
3 stops33h 12m
Multiple Airlines
Deal found 2/26![Multiple Airlines logo]()
$425
This Kiwi.com deal was found by Cheapflights users on 2/27. Clicking the “Pick Dates” 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 4/138:41 am
STL
- EZE
3 stops24h 49m
Multiple Airlines
Deal found 2/27![Multiple Airlines logo]()
$433
This Kiwi.com deal was found by Cheapflights users on 2/26. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/243:48 pm
STL
- AEP
3 stops37h 52m
Multiple Airlines
Deal found 2/26![Multiple Airlines logo]()
$480
This Kiwi.com deal was found by Cheapflights users on 2/24. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/108:16 pm
STL
- EZE
3 stops30h 14m
Multiple Airlines
Deal found 2/24![Multiple Airlines logo]()
$482
This Booking.com deal was found by Cheapflights users on 2/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/134:05 pm
STL
- AEP
2 stops27h 35m
Multiple Airlines
Deal found 2/27![Multiple Airlines logo]()
$615
This Ovago deal was found by Cheapflights users on 2/26. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/243:42 pm
STL
- EZE
1 stop16h 03m
LATAM Airlines
Deal found 2/26![LATAM Airlines logo]()
$705
This Ovago deal was found by Cheapflights users on 2/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/136:50 pm
STL
- EZE
1 stop12h 55m
LATAM Airlines
Deal found 2/27![LATAM Airlines logo]()
$751
This BusinessClass deal was found by Cheapflights users on 2/24. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/106:59 pm
STL
- EZE
1 stop12h 46m
LATAM Airlines
Deal found 2/24![LATAM Airlines logo]()
$767
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 February 27, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $937 (LATAM Airlines) |
One-way from | $376 (Kiwi.com) |
Popular in | June |
Cheapest in | September |
Average price | $1,321 |
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 February 27, 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
St. LouisBuenos Aires
STL - AEP
STLAEP
Lambert-St Louis
Tue 3/24
7:03 am-7:55 am
2 stops22h 52m
Buenos Aires Jorge Newbery
Tue 3/31
3:45 pm-9:05 am
2 stops19h 20m
$937
St. LouisBuenos Aires
STL - EZE
STLEZE
Lambert-St Louis
Tue 3/31
4:49 pm-8:00 am
1 stop13h 11m
Buenos Aires Ministro Pistarini
Thu 5/7
9:00 pm-9:08 pm
2 stops26h 08m
$996
St. LouisBuenos Aires
STL - EZE
STLEZE
Lambert-St Louis
Fri 7/24
5:30 pm-9:45 am
1 stop14h 15m
Buenos Aires Ministro Pistarini
Mon 8/3
8:10 pm-10:45 am
1 stop16h 35m
$1,105
St. LouisBuenos Aires
STL - EZE
STLEZE
Lambert-St Louis
Mon 4/13
10:00 am-8:00 am
2 stops20h 00m
Buenos Aires Ministro Pistarini
Mon 4/20
9:00 pm-9:25 am
1 stop14h 25m
$1,122
St. LouisBuenos Aires
STL - AEP
STLAEP
Lambert-St Louis
Thu 4/30
6:50 pm-4:00 pm
2 stops19h 10m
Buenos Aires Jorge Newbery
Mon 5/4
5:35 pm-10:34 am
2 stops18h 59m
$1,143
St. LouisBuenos Aires
STL - AEP
STLAEP
Lambert-St Louis
Mon 5/18
7:01 pm-5:00 pm
2 stops19h 59m
Buenos Aires Jorge Newbery
Thu 5/21
3:45 pm-9:44 am
2 stops19h 59m
$1,143
St. LouisBuenos Aires
STL - EZE
STLEZE
Lambert-St Louis
Thu 4/30
1:02 pm-9:45 am
1 stop18h 43m
Buenos Aires Ministro Pistarini
Mon 5/4
8:10 pm-8:30 am
1 stop14h 20m
$1,143
St. LouisBuenos Aires
STL - EZE
STLEZE
Lambert-St Louis
Sun 4/12
8:15 pm-8:00 am
2 stops33h 45m
Buenos Aires Ministro Pistarini
Sun 4/19
9:00 pm-10:28 pm
1 stop27h 28m
$1,176
St. LouisBuenos Aires
STL - AEP
STLAEP
Lambert-St Louis
Mon 4/13
4:41 pm-4:00 pm
2 stops21h 19m
Buenos Aires Jorge Newbery
Mon 4/20
5:05 pm-10:34 am
2 stops19h 29m
$1,197
St. LouisBuenos Aires
STL - EZE
STLEZE
Lambert-St Louis
Fri 4/10
10:09 am-8:00 am
1 stop19h 51m
Buenos Aires Ministro Pistarini
Fri 4/17
9:00 pm-9:25 am
1 stop14h 25m
$1,202
Showing 1-10 of 24 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-AEP
STL-EZE
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-AEP
STL-EZE
No data available for this route at this time. Please check back soon.
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 February 27, 2026.
Get a feel of what it's like to fly with Delta, LATAM Airlines, and American 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.
Entertainment
7.8
Comfort
7.9
Crew
8.5
Boarding
8.1
Food
7.2
Overall
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Entertainment
7.8
Comfort
7.9
Crew
8.5
Boarding
8.1
Food
7.2
Overall
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Entertainment
7.8
Comfort
7.9
Crew
8.5
Boarding
8.1
Food
7.2
Overall
7.9
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Entertainment
7.8
Comfort
7.9
Crew
8.5
Boarding
8.1
Food
7.2
Overall
7.9
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.
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
Complete your trip
Flights by cabin class
Other flight options
Popular flights
Alternative routes for St. Louis to Argentina
See prices for flight routes from nearby airports that may be better suited for you.
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 February 27, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top airline flying from St. Louis to Argentina
Discover the top airline 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 February 27, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$1,025 | Average$1,390 | FlexibilityNo cancel fee | On-timeN/A |