$516+ 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 11/30. Fares are subject to change and may not be available on all flights or dates of travel.
STL — EZE
Dec 12 — Dec 191
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 November 12, 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 November 12, 2026.
This Kiwi.com deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” 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 11/3012:05 pm -
1 stop16h 35m
Mon 12/148:10 am -
2 stops54h 07m
Deal found 11/11![Multiple Airlines logo]()
$1,261
This United Airlines deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/236:15 am -
1 stop22h 05m
Wed 1/2010:05 pm -
1 stop21h 38m
Deal found 11/9![United Airlines logo]()
$1,358
This United Airlines deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/238:05 am -
2 stops22h 15m
Tue 1/1911:55 pm -
2 stops20h 55m
Deal found 11/9![United Airlines logo]()
$1,362
This Ovago deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/75:50 pm -
2 stops35h 10m
Mon 12/142:45 pm -
2 stops22h 18m
Deal found 11/9![Copa Airlines logo]()
$1,366
This United Airlines deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/225:59 pm -
1 stop34h 21m
Wed 1/2010:05 pm -
1 stop21h 38m
Deal found 11/9![United Airlines logo]()
$1,369
This United Airlines deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/225:59 pm -
1 stop34h 21m
Tue 1/1910:05 pm -
2 stops22h 08m
Deal found 11/9![United Airlines logo]()
$1,373
This United Airlines deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/213:00 pm -
2 stops37h 20m
Wed 1/2011:55 pm -
2 stops20h 18m
Deal found 11/9![United Airlines logo]()
$1,382
This United Airlines deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/256:15 am -
1 stop22h 05m
Wed 1/2010:05 pm -
1 stop14h 26m
Deal found 11/9![United Airlines logo]()
$1,388
This FlightHub deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” 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.
Thu 12/312:36 pm -
1 stop18h 04m
Tue 12/1511:35 pm -
1 stop20h 08m
Deal found 11/11![LATAM Airlines logo]()
$1,390
This United Airlines deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/2510:45 am -
2 stops17h 35m
Tue 1/1910:05 pm -
2 stops19h 23m
Deal found 11/9![United Airlines logo]()
$1,392
This United Airlines deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/3011:00 am -
1 stop19h 20m
Mon 12/1410:05 pm -
1 stop21h 45m
Deal found 11/11![United Airlines logo]()
$1,398
This United Airlines deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/265:59 pm -
1 stop34h 21m
Wed 1/2010:05 pm -
1 stop19h 01m
Deal found 11/9![United Airlines logo]()
$1,399
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 November 12, 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 November 12, 2026.
This LATAM Airlines deal was found by Cheapflights users on 11/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/1812:00 pm -
2 stops23h 40m
Mon 2/15:35 pm -
2 stops18h 42m
Deal found 11/8![LATAM Airlines logo]()
$1,318
This United Airlines deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” 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 1/181:17 pm -
2 stops17h 03m
Mon 2/110:05 pm -
1 stop14h 26m
Deal found 11/10![United Airlines logo]()
$1,318
This Delta deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/412:01 pm -
2 stops19h 54m
Wed 1/208:05 pm -
2 stops21h 39m
Deal found 11/10![Delta logo]()
$1,322
This LATAM Airlines deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” 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 3/193:40 pm -
2 stops17h 15m
Thu 4/81:10 pm -
2 stops26h 10m
Deal found 11/11![Multiple Airlines logo]()
$1,372
This LATAM Airlines deal was found by Cheapflights users on 11/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/197:20 am -
2 stops22h 20m
Thu 4/811:45 am -
2 stops25h 03m
Deal found 11/7![LATAM Airlines logo]()
$1,358
This Delta deal was found by Cheapflights users on 11/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/133:40 pm -
2 stops21h 20m
Mon 3/2211:35 pm -
1 stop20h 26m
Deal found 11/8![Delta logo]()
$1,358
This United Airlines deal was found by Cheapflights users on 11/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/226:58 pm -
2 stops33h 22m
Wed 1/2010:05 pm -
1 stop14h 26m
Deal found 11/7![United Airlines logo]()
$1,362
This United Airlines deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/238:05 am -
2 stops22h 15m
Tue 1/1911:55 pm -
2 stops20h 55m
Deal found 11/9![United Airlines logo]()
$1,362
This LATAM Airlines deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” 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 3/286:00 am -
2 stops24h 30m
Sat 4/105:35 pm -
2 stops26h 26m
Deal found 11/10![LATAM Airlines logo]()
$1,418
This United Airlines deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/213:00 pm -
2 stops37h 20m
Tue 1/1911:55 pm -
2 stops20h 18m
Deal found 11/9![United Airlines logo]()
$1,382
This LATAM Airlines deal was found by Cheapflights users on 11/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/65:31 pm -
2 stops19h 29m
Sat 12/124:40 am -
2 stops22h 25m
Deal found 11/7![LATAM Airlines logo]()
$1,458
This KAYAK deal was found by Cheapflights users on 11/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/2910:05 am -
2 stops18h 35m
Fri 12/118:05 pm -
2 stops20h 23m
Deal found 11/8![Delta logo]()
$1,618
This United Airlines deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/31:18 pm -
2 stops17h 02m
Tue 12/1510:05 pm -
1 stop23h 36m
Deal found 11/11![United Airlines logo]()
$1,398
This Delta deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/410:11 am -
2 stops18h 29m
Wed 1/205:35 pm -
2 stops20h 29m
Deal found 11/10![Delta logo]()
$1,618
This United Airlines deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” 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 12/21:18 pm -
2 stops17h 02m
Tue 12/2211:55 pm -
1 stop23h 28m
Deal found 11/11![United Airlines logo]()
$1,398
This LATAM Airlines deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” 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 12/95:51 pm -
2 stops19h 09m
Sun 12/132:55 pm -
2 stops21h 06m
Deal found 11/11![LATAM Airlines logo]()
$1,543
This Delta deal was found by Cheapflights users on 11/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/1610:06 am -
2 stops18h 34m
Thu 12/243:50 pm -
2 stops21h 56m
Deal found 11/12![Delta logo]()
$1,636
This United Airlines deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/3010:53 am -
2 stops17h 27m
Tue 12/2210:05 pm -
2 stops21h 03m
Deal found 11/11![United Airlines logo]()
$1,402
This FlightHub deal was found by Cheapflights users on 11/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/86:00 am -
2 stops29h 40m
Sun 1/179:25 am -
2 stops33h 49m
Deal found 11/7![LATAM Airlines logo]()
$1,586
This FlightHub deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/1510:06 am -
2 stops32h 24m
Mon 1/183:50 pm -
2 stops29h 04m
Deal found 11/9![LATAM Airlines logo]()
$1,592
This SmartFares deal was found by Cheapflights users on 11/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/103:40 pm -
2 stops19h 20m
Sun 3/215:35 pm -
2 stops19h 13m
Deal found 11/7![LATAM Airlines logo]()
$1,736
Last-minute flights from St. Louis to ArgentinaDiscover last-minute flight deals from St. Louis to Argentina. Data last updated November 12, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Argentina. Data last updated November 12, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” 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 11/3012:05 pm -
1 stop16h 35m
Mon 12/148:10 am -
2 stops54h 07m
Deal found 11/11![Multiple Airlines logo]()
$1,261
This United Airlines deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/3011:00 am -
1 stop19h 20m
Mon 12/1410:05 pm -
1 stop21h 45m
Deal found 11/11![United Airlines logo]()
$1,398
This FlightHub deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” 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.
Thu 12/312:36 pm -
1 stop18h 04m
Tue 12/1511:35 pm -
1 stop20h 08m
Deal found 11/11![LATAM Airlines logo]()
$1,390
This Ovago deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/75:50 pm -
2 stops35h 10m
Mon 12/142:45 pm -
2 stops22h 18m
Deal found 11/9![Copa Airlines logo]()
$1,366
This United Airlines deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/213:00 pm -
2 stops37h 20m
Wed 1/2011:55 pm -
2 stops20h 18m
Deal found 11/9![United Airlines logo]()
$1,382
This United Airlines deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/225:59 pm -
1 stop34h 21m
Wed 1/2010:05 pm -
1 stop21h 38m
Deal found 11/9![United Airlines logo]()
$1,369
This United Airlines deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/225:59 pm -
1 stop34h 21m
Tue 1/1910:05 pm -
2 stops22h 08m
Deal found 11/9![United Airlines logo]()
$1,373
This United Airlines deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/236:15 am -
1 stop22h 05m
Wed 1/2010:05 pm -
1 stop21h 38m
Deal found 11/9![United Airlines logo]()
$1,358
This United Airlines deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/238:05 am -
2 stops22h 15m
Tue 1/1911:55 pm -
2 stops20h 55m
Deal found 11/9![United Airlines logo]()
$1,362
This United Airlines deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/256:15 am -
1 stop22h 05m
Wed 1/2010:05 pm -
1 stop14h 26m
Deal found 11/9![United Airlines logo]()
$1,388
This United Airlines deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/2510:45 am -
2 stops17h 35m
Tue 1/1910:05 pm -
2 stops19h 23m
Deal found 11/9![United Airlines logo]()
$1,392
This United Airlines deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/265:59 pm -
1 stop34h 21m
Wed 1/2010:05 pm -
1 stop19h 01m
Deal found 11/9![United Airlines logo]()
$1,399
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 November 12, 2026.
Search for one-way flight options from St. Louis to Argentina. Find affordable one-way fares based on user searches. Data last updated November 12, 2026.
This Kiwi.com deal was found by Cheapflights users on 11/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/306:05 pm -
3 stops46h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/8![Multiple Airlines logo]()
$516
This Kiwi.com deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” 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 2/227:02 pm -
3 stops55h 03m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/11![Multiple Airlines logo]()
$550
This Kiwi.com deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” 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 2/225:59 pm -
3 stops33h 56m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/11![Multiple Airlines logo]()
$565
This Kiwi.com deal was found by Cheapflights users on 11/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/306:35 pm -
3 stops41h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/8![Multiple Airlines logo]()
$583
This KAYAK deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” 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 12/76:55 pm -
2 stops28h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/11![Copa Airlines logo]()
$583
This Ovago deal was found by Cheapflights users on 11/10. Clicking the “Pick Dates” 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.
Wed 12/26:30 am -
2 stops22h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/10![Copa Airlines logo]()
$584
This KAYAK deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” 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 2/227:10 pm -
2 stops26h 42m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/11![Copa Airlines logo]()
$631
This Justfly.com deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” 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.
Sun 3/74:05 pm -
1 stop20h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/11![Air Canada logo]()
$873
This FlightHub deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” 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.
Sun 3/74:05 pm -
2 stops20h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/11![Multiple Airlines logo]()
$874
This Air Canada deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” 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.
Sun 3/74:05 pm -
2 stops25h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/11![Multiple Airlines logo]()
$875
This Air Canada deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” 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.
Wed 12/24:05 pm -
2 stops25h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/11![Multiple Airlines logo]()
$878
This Justfly.com deal was found by Cheapflights users on 11/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/76:00 am -
2 stops22h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/9![LATAM Airlines logo]()
$894
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 November 12, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,261 (Kiwi.com) |
One-way from | $516 (Kiwi.com) |
Popular in | May |
Cheapest in | March |
Average price | $1,745 |
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 7,457,451 searches. Data last updated November 12, 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 Lambert-St Louis - EZE Buenos Aires Ministro Pistarini
STLEZE
Lambert-St Louis
Mon 2/22
5:59 pm-6:55 am
3 stops33h 56m
Buenos Aires Ministro Pistarini
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$565
St. LouisBuenos Aires
STL Lambert-St Louis - EZE Buenos Aires Ministro Pistarini
STLEZE
Lambert-St Louis
Mon 12/7
6:55 pm-2:10 am
2 stops28h 15m
Buenos Aires Ministro Pistarini
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$583
St. LouisBuenos Aires
STL Lambert-St Louis - AEP Buenos Aires Jorge Newbery
STLAEP
Lambert-St Louis
Mon 11/30
6:35 pm-2:40 pm
3 stops41h 05m
Buenos Aires Jorge Newbery
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$583
St. LouisBuenos Aires
STL Lambert-St Louis - EZE Buenos Aires Ministro Pistarini
STLEZE
Lambert-St Louis
Wed 12/2
6:30 am-8:00 am
2 stops22h 30m
Buenos Aires Ministro Pistarini
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$610
Quickest round-trip
St. LouisBuenos Aires
STL Lambert-St Louis - EZE Buenos Aires Ministro Pistarini
STLEZE
Lambert-St Louis
Mon 11/30
12:05 pm-7:40 am
1 stop16h 35m
Buenos Aires Ministro Pistarini
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$645
St. LouisBuenos Aires
STL Lambert-St Louis - AEP Buenos Aires Jorge Newbery
STLAEP
Lambert-St Louis
Mon 2/22
6:00 am-4:00 pm
2 stops31h 00m
Buenos Aires Jorge Newbery
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$816
St. LouisBuenos Aires
STL Lambert-St Louis - EZE Buenos Aires Ministro Pistarini
STLEZE
Lambert-St Louis
Sun 3/7
4:05 pm-3:05 pm
1 stop20h 00m
Buenos Aires Ministro Pistarini
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$873
St. LouisBuenos Aires
STL Lambert-St Louis - EZE Buenos Aires Ministro Pistarini
STLEZE
Lambert-St Louis
Sun 3/7
4:05 pm-3:40 pm
2 stops20h 35m
Buenos Aires Ministro Pistarini
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$874
St. LouisBuenos Aires
STL Lambert-St Louis - AEP Buenos Aires Jorge Newbery
STLAEP
Lambert-St Louis
Sun 3/7
4:05 pm-8:40 pm
2 stops25h 35m
Buenos Aires Jorge Newbery
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$875
St. LouisBuenos Aires
STL Lambert-St Louis - EZE Buenos Aires Ministro Pistarini
STLEZE
Lambert-St Louis
Mon 12/7
12:36 pm-9:40 am
1 stop18h 04m
Buenos Aires Ministro Pistarini
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$876
Showing 1-10 of 34 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, June is the cheapest month in which you can book a flight from St. Louis to Argentina (average of $1,109). Flying from St. Louis to Argentina in January is currently the most expensive (average of $1,622). 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 November 12, 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.
Crew
8.5
Overall
7.8
Boarding
8.1
Entertainment
7.8
Comfort
7.8
Food
7.2
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Crew
8.5
Overall
7.8
Boarding
8.1
Entertainment
7.8
Comfort
7.8
Food
7.2
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Crew
8.5
Overall
7.8
Boarding
8.1
Entertainment
7.8
Comfort
7.8
Food
7.2
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Crew
8.5
Overall
7.8
Boarding
8.1
Entertainment
7.8
Comfort
7.8
Food
7.2
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Related info for your journey
Find useful and relevant information for your journey from 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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St. Louis and Argentina flights
Browse other St. Louis and Argentina flight options. Last updated on November 12, 2026.
Popular flight searches
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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 7,457,451 searches. Data last updated November 12, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$431 | Average$1,546 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$1,037 | Average$1,480 | FlexibilityNo cancel fee | On-time81% |