$391+ 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 11/3. Fares are subject to change and may not be available on all flights or dates of travel.
STL — EZE
Jul 25 — Aug 11
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 June 25, 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 June 25, 2026.
This lol.travel deal was found by Cheapflights users on 6/23. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/1311:00 am
STL
- EZE
1 stop20h 45m
LATAM Airlines
Wed 8/268:10 pm
EZE
- STL
1 stop15h 44m
LATAM Airlines
Deal found 6/23![LATAM Airlines logo]()
$1,132
This oojo deal was found by Cheapflights users on 6/23. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/176:00 am
STL
- EZE
2 stops25h 40m
LATAM Airlines
Sun 8/233:55 am
EZE
- STL
2 stops22h 03m
LATAM Airlines
Deal found 6/23![LATAM Airlines logo]()
$1,146
This Delta deal was found by Cheapflights users on 6/23. 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.
Mon 11/164:13 pm
STL
- AEP
2 stops20h 47m
Delta
Mon 11/235:35 pm
AEP
- STL
2 stops20h 13m
Delta
Deal found 6/23![Delta logo]()
$1,148
This Delta deal was found by Cheapflights users on 6/23. 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.
Mon 11/161:30 pm
STL
- EZE
1 stop17h 10m
Delta
Wed 11/259:30 pm
EZE
- STL
1 stop23h 31m
Delta
Deal found 6/23![Delta logo]()
$1,148
This Delta deal was found by Cheapflights users on 6/23. 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 8/1311:00 am
STL
- EZE
2 stops20h 40m
Delta
Wed 8/268:10 pm
EZE
- STL
1 stop17h 36m
Delta
Deal found 6/23![Delta logo]()
$1,152
This United Airlines deal was found by Cheapflights users on 6/23. 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.
Sun 11/155:55 pm
STL
- EZE
1 stop34h 25m
United Airlines
Mon 11/2311:55 pm
EZE
- STL
1 stop21h 30m
United Airlines
Deal found 6/23![United Airlines logo]()
$1,157
This United Airlines deal was found by Cheapflights users on 6/23. 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.
Sun 11/155:55 pm
STL
- EZE
1 stop34h 25m
United Airlines
Tue 11/2411:55 pm
EZE
- STL
2 stops18h 46m
United Airlines
Deal found 6/23![United Airlines logo]()
$1,162
This oojo deal was found by Cheapflights users on 6/23. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/189:00 am
STL
- EZE
2 stops21h 40m
LATAM Airlines
Tue 11/247:20 am
EZE
- STL
2 stops30h 28m
LATAM Airlines
Deal found 6/23![LATAM Airlines logo]()
$1,175
This LATAM Airlines deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” 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 7/86:58 pm
STL
- AEP
2 stops19h 02m
LATAM Airlines
Sun 7/125:35 pm
AEP
- STL
2 stops20h 42m
LATAM Airlines
Deal found 6/21![LATAM Airlines logo]()
$1,178
This United Airlines deal was found by Cheapflights users on 6/23. 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.
Wed 11/181:08 pm
STL
- EZE
2 stops17h 12m
United Airlines
Mon 11/2310:05 pm
EZE
- STL
1 stop15h 00m
United Airlines
Deal found 6/23![United Airlines logo]()
$1,178
This American Airlines deal was found by Cheapflights users on 6/23. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/281:42 pm
STL
- EZE
2 stops17h 08m
American Airlines
Sun 7/58:30 pm
EZE
- STL
2 stops17h 25m
American Airlines
Deal found 6/23![American Airlines logo]()
$1,182
This oojo deal was found by Cheapflights users on 6/22. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/156:00 am
STL
- EZE
2 stops25h 40m
LATAM Airlines
Mon 8/311:10 pm
EZE
- STL
2 stops24h 36m
LATAM Airlines
Deal found 6/22![LATAM Airlines logo]()
$1,184
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 June 25, 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 June 25, 2026.
This Delta deal was found by Cheapflights users on 6/23. 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 8/139:15 am
STL
- AEP
2 stops20h 25m
Delta
Wed 8/268:05 pm
AEP
- STL
2 stops20h 28m
Delta
Deal found 6/23![Delta logo]()
$1,148
This United Airlines deal was found by Cheapflights users on 6/23. 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.
Sun 11/155:55 pm
STL
- EZE
1 stop34h 25m
United Airlines
Mon 11/2311:55 pm
EZE
- STL
1 stop21h 30m
United Airlines
Deal found 6/23![United Airlines logo]()
$1,157
This LATAM Airlines deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” 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 8/711:00 am
STL
- AEP
2 stops18h 40m
LATAM Airlines
Sun 8/168:05 pm
AEP
- STL
2 stops17h 41m
LATAM Airlines
Deal found 6/21![LATAM Airlines logo]()
$1,408
This Mytrip deal was found by Cheapflights users on 6/23. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/178:55 am
STL
- AEP
2 stops34h 05m
Multiple Airlines
Mon 8/247:00 am
AEP
- STL
3 stops33h 02m
Multiple Airlines
Deal found 6/23![Multiple Airlines logo]()
$1,545
This Delta deal was found by Cheapflights users on 6/23. 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.
Mon 11/164:13 pm
STL
- AEP
2 stops20h 47m
Delta
Mon 11/235:35 pm
AEP
- STL
2 stops20h 13m
Delta
Deal found 6/23![Delta logo]()
$1,148
This United Airlines deal was found by Cheapflights users on 6/23. 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.
Sun 11/155:55 pm
STL
- EZE
1 stop34h 25m
United Airlines
Tue 11/2411:55 pm
EZE
- STL
2 stops18h 46m
United Airlines
Deal found 6/23![United Airlines logo]()
$1,162
This Delta deal was found by Cheapflights users on 6/23. 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 8/1311:00 am
STL
- EZE
2 stops20h 40m
Delta
Wed 8/268:10 pm
EZE
- STL
1 stop17h 36m
Delta
Deal found 6/23![Delta logo]()
$1,152
This United Airlines deal was found by Cheapflights users on 6/23. 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.
Wed 11/181:08 pm
STL
- EZE
2 stops17h 12m
United Airlines
Mon 11/2310:05 pm
EZE
- STL
1 stop15h 00m
United Airlines
Deal found 6/23![United Airlines logo]()
$1,178
This LATAM Airlines deal was found by Cheapflights users on 6/24. 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.
Wed 7/810:51 am
STL
- AEP
2 stops27h 09m
LATAM Airlines
Sun 7/128:05 pm
AEP
- STL
2 stops18h 12m
LATAM Airlines
Deal found 6/24![LATAM Airlines logo]()
$1,416
This United Airlines deal was found by Cheapflights users on 6/23. 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.
Tue 11/171:08 pm
STL
- EZE
2 stops17h 12m
United Airlines
Mon 11/2311:55 pm
EZE
- STL
1 stop17h 18m
United Airlines
Deal found 6/23![United Airlines logo]()
$1,178
This Delta deal was found by Cheapflights users on 6/23. 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.
Fri 11/2011:51 am
STL
- EZE
2 stops18h 49m
Delta
Tue 11/249:30 pm
EZE
- STL
1 stop13h 42m
Delta
Deal found 6/23![Delta logo]()
$1,212
This Mytrip deal was found by Cheapflights users on 6/22. 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.
Fri 8/712:10 pm
STL
- AEP
3 stops29h 30m
Multiple Airlines
Sun 8/164:40 am
AEP
- STL
3 stops41h 44m
Multiple Airlines
Deal found 6/22![Multiple Airlines logo]()
$1,713
This Delta deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” 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 12/2211:51 am
STL
- EZE
2 stops18h 49m
Delta
Fri 1/81:10 pm
EZE
- STL
2 stops24h 38m
Delta
Deal found 6/21![Delta logo]()
$1,292
This FlightHub deal was found by Cheapflights users on 6/22. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/216:59 pm
STL
- EZE
2 stops35h 41m
LATAM Airlines
Wed 1/61:10 pm
EZE
- STL
2 stops24h 38m
LATAM Airlines
Deal found 6/22![LATAM Airlines logo]()
$1,564
This United Airlines deal was found by Cheapflights users on 6/23. 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 11/216:15 am
STL
- EZE
1 stop24h 05m
United Airlines
Mon 11/2311:55 pm
EZE
- STL
1 stop17h 18m
United Airlines
Deal found 6/23![United Airlines logo]()
$1,338
This United Airlines deal was found by Cheapflights users on 6/22. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/711:10 am
STL
- EZE
1 stop18h 50m
United Airlines
Sun 8/169:00 pm
EZE
- STL
1 stop15h 10m
United Airlines
Deal found 6/22![United Airlines logo]()
$1,354
This LATAM Airlines deal was found by Cheapflights users on 6/25. 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 7/206:58 pm
STL
- AEP
2 stops19h 02m
LATAM Airlines
Tue 7/218:05 pm
AEP
- STL
2 stops18h 12m
LATAM Airlines
Deal found 6/25![LATAM Airlines logo]()
$1,660
This Delta deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” 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 12/229:00 am
STL
- EZE
2 stops21h 40m
Delta
Thu 1/71:10 pm
EZE
- STL
2 stops24h 38m
Delta
Deal found 6/21![Delta logo]()
$1,522
This Delta deal was found by Cheapflights users on 6/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/219:00 am
STL
- AEP
2 stops19h 40m
Delta
Sun 1/175:05 pm
AEP
- STL
2 stops20h 43m
Delta
Deal found 6/22![Delta logo]()
$1,994
Last-minute flights from St. Louis to ArgentinaDiscover last-minute flight deals from St. Louis to Argentina. Data last updated June 25, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Argentina. Data last updated June 25, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 6/22. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/276:24 pm
STL
- EZE
1 stop23h 51m
American Airlines
Sat 7/410:35 pm
EZE
- STL
1 stop13h 49m
American Airlines
Deal found 6/22![American Airlines logo]()
$1,220
This oojo deal was found by Cheapflights users on 6/22. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/276:00 am
STL
- EZE
2 stops25h 40m
LATAM Airlines
Fri 7/33:55 am
EZE
- STL
2 stops30h 21m
LATAM Airlines
Deal found 6/22![LATAM Airlines logo]()
$1,232
This oojo deal was found by Cheapflights users on 6/22. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/271:20 pm
STL
- AEP
2 stops24h 40m
LATAM Airlines
Sat 7/42:55 pm
AEP
- STL
2 stops19h 21m
LATAM Airlines
Deal found 6/22![LATAM Airlines logo]()
$1,282
This Mytrip deal was found by Cheapflights users on 6/22. 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 6/272:15 pm
STL
- EZE
2 stops32h 10m
Multiple Airlines
Fri 7/33:55 am
EZE
- STL
3 stops42h 12m
Multiple Airlines
Deal found 6/22![Multiple Airlines logo]()
$1,992
This Mytrip deal was found by Cheapflights users on 6/22. 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 6/271:20 pm
STL
- EZE
3 stops47h 10m
Air Canada
Sat 7/44:35 pm
EZE
- STL
3 stops52h 07m
Air Canada
Deal found 6/22![Air Canada logo]()
$2,037
This American Airlines deal was found by Cheapflights users on 6/23. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/285:16 am
STL
- EZE
1 stop12h 59m
American Airlines
Sun 7/510:00 pm
EZE
- STL
1 stop23h 53m
American Airlines
Deal found 6/23![American Airlines logo]()
$1,178
This LATAM Airlines deal was found by Cheapflights users on 6/23. 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.
Sun 6/283:57 pm
STL
- AEP
2 stops22h 03m
LATAM Airlines
Sun 7/55:35 pm
AEP
- STL
2 stops20h 59m
LATAM Airlines
Deal found 6/23![LATAM Airlines logo]()
$1,368
This Mytrip deal was found by Cheapflights users on 6/23. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/288:40 am
STL
- EZE
3 stops29h 00m
Multiple Airlines
Sun 7/56:15 am
EZE
- STL
3 stops33h 47m
Multiple Airlines
Deal found 6/23![Multiple Airlines logo]()
$2,106
This LATAM Airlines deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” 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 7/86:58 pm
STL
- AEP
2 stops19h 02m
LATAM Airlines
Sun 7/125:35 pm
AEP
- STL
2 stops20h 42m
LATAM Airlines
Deal found 6/21![LATAM Airlines logo]()
$1,178
This LATAM Airlines deal was found by Cheapflights users on 6/25. 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 7/206:58 pm
STL
- AEP
2 stops19h 02m
LATAM Airlines
Tue 7/218:05 pm
AEP
- STL
2 stops18h 12m
LATAM Airlines
Deal found 6/25![LATAM Airlines logo]()
$1,660
This United Airlines deal was found by Cheapflights users on 6/25. 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.
Mon 7/202:57 pm
STL
- EZE
1 stop15h 03m
United Airlines
Tue 7/219:00 pm
EZE
- STL
1 stop15h 07m
United Airlines
Deal found 6/25![United Airlines logo]()
$1,660
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 June 25, 2026.
Search for one-way flight options from St. Louis to Argentina. Find affordable one-way fares based on user searches. Data last updated June 25, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/310:35 am
STL
- EZE
3 stops44h 25m
Multiple Airlines
Deal found 6/22![Multiple Airlines logo]()
$391
This Kiwi.com deal was found by Cheapflights users on 6/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/310:35 am
STL
- AEP
3 stops42h 55m
Multiple Airlines
Deal found 6/22![Multiple Airlines logo]()
$405
This Kiwi.com deal was found by Cheapflights users on 6/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1810:35 am
STL
- EZE
3 stops37h 25m
Multiple Airlines
Deal found 6/22![Multiple Airlines logo]()
$407
This Kiwi.com deal was found by Cheapflights users on 6/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1810:35 am
STL
- AEP
3 stops42h 55m
Multiple Airlines
Deal found 6/22![Multiple Airlines logo]()
$410
This Mytrip deal was found by Cheapflights users on 6/22. 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.
Wed 12/24:15 pm
STL
- EZE
3 stops32h 30m
Multiple Airlines
Deal found 6/22![Multiple Airlines logo]()
$628
This Mytrip deal was found by Cheapflights users on 6/22. 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.
Wed 12/24:15 pm
STL
- AEP
3 stops34h 25m
Multiple Airlines
Deal found 6/22![Multiple Airlines logo]()
$675
This FlightHub deal was found by Cheapflights users on 6/24. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/27:04 pm
STL
- AEP
2 stops31h 36m
Avianca
Deal found 6/24![Avianca logo]()
$756
This Avianca deal was found by Cheapflights users on 6/24. 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/27:04 pm
STL
- EZE
2 stops17h 46m
Avianca
Deal found 6/24![Avianca logo]()
$764
This LATAM Airlines deal was found by Cheapflights users on 6/24. 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.
Wed 12/29:00 am
STL
- EZE
1 stop21h 40m
LATAM Airlines
Deal found 6/24![LATAM Airlines logo]()
$784
This BusinessClass deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” 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.
Sat 10/1012:10 pm
STL
- EZE
2 stops41h 47m
Copa Airlines
Deal found 6/20![Copa Airlines logo]()
$1,862
This United Airlines deal was found by Cheapflights users on 6/23. 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.
Wed 12/27:33 am
STL
- EZE
3 stops20h 47m
United Airlines
Deal found 6/23![United Airlines logo]()
$2,068
This BusinessClass deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” 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.
Sat 10/105:33 am
STL
- EZE
1 stop23h 42m
GOL
Deal found 6/20![GOL logo]()
$2,498
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 June 25, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,132 (lol.travel) |
One-way from | $391 (Kiwi.com) |
Popular in | May |
Cheapest in | October |
Average price | $1,473 |
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 June 25, 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 8/13
9:15 am-7:40 am
2 stops20h 25m
Buenos Aires Jorge Newbery
Wed 8/26
8:05 pm-2:33 pm
2 stops20h 28m
$1,148
St. LouisBuenos Aires
STL - AEP
STLAEP
Lambert-St Louis
Mon 11/16
4:13 pm-4:00 pm
2 stops20h 47m
Buenos Aires Jorge Newbery
Mon 11/23
5:35 pm-10:48 am
2 stops20h 13m
$1,148
St. LouisBuenos Aires
STL - EZE
STLEZE
Lambert-St Louis
Thu 8/13
11:00 am-9:40 am
2 stops20h 40m
Buenos Aires Ministro Pistarini
Wed 8/26
8:10 pm-11:46 am
1 stop17h 36m
$1,152
St. LouisBuenos Aires
STL - EZE
STLEZE
Lambert-St Louis
Sun 11/15
5:55 pm-7:20 am
1 stop34h 25m
Buenos Aires Ministro Pistarini
Mon 11/23
11:55 pm-6:25 pm
1 stop21h 30m
$1,157
St. LouisBuenos Aires
STL - EZE
STLEZE
Lambert-St Louis
Sun 11/15
5:55 pm-7:20 am
1 stop34h 25m
Buenos Aires Ministro Pistarini
Tue 11/24
11:55 pm-3:41 pm
2 stops18h 46m
$1,162
Quickest round-trip
St. LouisBuenos Aires
STL - EZE
STLEZE
Lambert-St Louis
Wed 11/18
1:08 pm-9:20 am
2 stops17h 12m
Buenos Aires Ministro Pistarini
Mon 11/23
10:05 pm-10:05 am
1 stop15h 00m
$1,178
St. LouisBuenos Aires
STL - EZE
STLEZE
Lambert-St Louis
Tue 11/17
1:08 pm-9:20 am
2 stops17h 12m
Buenos Aires Ministro Pistarini
Mon 11/23
11:55 pm-2:13 pm
1 stop17h 18m
$1,178
St. LouisBuenos Aires
STL - EZE
STLEZE
Lambert-St Louis
Fri 11/20
11:51 am-9:40 am
2 stops18h 49m
Buenos Aires Ministro Pistarini
Tue 11/24
9:30 pm-8:12 am
1 stop13h 42m
$1,212
St. LouisBuenos Aires
STL - EZE
STLEZE
Lambert-St Louis
Tue 12/22
11:51 am-9:40 am
2 stops18h 49m
Buenos Aires Ministro Pistarini
Fri 1/8
1:10 pm-10:48 am
2 stops24h 38m
$1,292
St. LouisBuenos Aires
STL - EZE
STLEZE
Lambert-St Louis
Sat 11/21
6:15 am-9:20 am
1 stop24h 05m
Buenos Aires Ministro Pistarini
Mon 11/23
11:55 pm-2:13 pm
1 stop17h 18m
$1,338
Showing 1-10 of 30 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
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 June 25, 2026.
Get a feel of what it's like to fly with Delta and LATAM 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.
Comfort
7.8
Entertainment
7.8
Overall
7.8
Boarding
8.1
Food
7.2
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Entertainment
7.8
Overall
7.8
Boarding
8.1
Food
7.2
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Entertainment
7.8
Overall
7.8
Boarding
8.1
Food
7.2
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
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
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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 June 25, 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 June 25, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$884 | Average$1,109 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$1,025 | Average$1,396 | FlexibilityNo cancel fee | On-timeN/A |