$558+ 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 12/7. Fares are subject to change and may not be available on all flights or dates of travel.
STL — EZE
Nov 3 — Nov 101
Round-trip
1 adult, Economy
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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
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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 October 4, 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 October 4, 2026.
This American Airlines deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” 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 11/1512:58 pm -
1 stop16h 17m
Sun 11/2210:25 pm -
1 stop17h 01m
Deal found 10/1![American Airlines logo]()
$1,233
This United Airlines deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” 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 11/146:15 am -
1 stop22h 05m
Wed 11/2511:55 pm -
1 stop19h 51m
Deal found 10/1![United Airlines logo]()
$1,263
This American Airlines deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” 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 11/1411:23 am -
2 stops16h 57m
Wed 11/2510:25 pm -
1 stop14h 59m
Deal found 10/1![American Airlines logo]()
$1,267
This Mytrip deal was found by Cheapflights users on 9/30. Clicking the “Pick Dates” 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 10/286:44 pm -
3 stops29h 56m
Wed 11/42:40 pm -
3 stops35h 36m
Deal found 9/30![Multiple Airlines logo]()
$1,280
This LATAM Airlines deal was found by Cheapflights users on 10/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/2612:00 pm -
2 stops18h 30m
Mon 11/95:35 pm -
2 stops26h 08m
Deal found 10/4![LATAM Airlines logo]()
$1,298
This LATAM Airlines deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” 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 12/35:31 pm -
1 stop13h 09m
Mon 12/73:10 pm -
2 stops20h 51m
Deal found 10/1![LATAM Airlines logo]()
$1,298
This Delta deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” 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 12/312:36 pm -
2 stops18h 14m
Mon 12/78:05 pm -
2 stops20h 23m
Deal found 10/1![Delta logo]()
$1,302
This LATAM Airlines deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/1412:20 pm -
2 stops19h 10m
Wed 11/252:55 pm -
2 stops22h 06m
Deal found 10/1![LATAM Airlines logo]()
$1,328
This LATAM Airlines deal was found by Cheapflights users on 10/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/512:00 pm -
2 stops27h 35m
Sun 12/2011:35 pm -
1 stop19h 53m
Deal found 10/4![LATAM Airlines logo]()
$1,328
This United Airlines deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” 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 12/126:55 pm -
2 stops35h 25m
Fri 1/2211:55 pm -
2 stops26h 29m
Deal found 10/1![United Airlines logo]()
$1,330
This LATAM Airlines deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/142:31 pm -
2 stops22h 29m
Sun 11/225:35 pm -
2 stops18h 25m
Deal found 10/1![LATAM Airlines logo]()
$1,358
This KAYAK deal was found by Cheapflights users on 10/3. Clicking the “Pick Dates” 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 11/206:15 am -
1 stop24h 05m
Sun 11/2910:05 pm -
1 stop27h 20m
Deal found 10/3![Multiple Airlines logo]()
$1,362
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 October 4, 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 October 4, 2026.
This American Airlines deal was found by Cheapflights users on 10/3. Clicking the “Pick Dates” 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 1/245:00 am -
1 stop23h 25m
Tue 2/210:50 pm -
1 stop21h 48m
Deal found 10/3![American Airlines logo]()
$1,168
This United Airlines deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” 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 1/245:28 pm -
2 stops34h 52m
Tue 2/210:05 pm -
2 stops21h 08m
Deal found 10/1![United Airlines logo]()
$1,172
This Delta deal was found by Cheapflights users on 10/3. Clicking the “Pick Dates” 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 11/1710:05 am -
2 stops18h 35m
Tue 11/245:35 pm -
2 stops20h 40m
Deal found 10/3![Delta logo]()
$1,298
This LATAM Airlines deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” 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 12/35:31 pm -
2 stops19h 29m
Mon 12/76:20 pm -
2 stops20h 09m
Deal found 10/1![LATAM Airlines logo]()
$1,298
This KAYAK deal was found by Cheapflights users on 9/30. Clicking the “Pick Dates” 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 1/146:15 am -
1 stop22h 05m
Sun 1/1710:05 pm -
1 stop27h 08m
Deal found 9/30![Multiple Airlines logo]()
$1,418
This United Airlines deal was found by Cheapflights users on 10/3. Clicking the “Pick Dates” 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 11/172:55 pm -
1 stop15h 25m
Tue 11/2410:05 pm -
2 stops20h 38m
Deal found 10/3![United Airlines logo]()
$1,237
This Delta deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” 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 12/312:36 pm -
2 stops18h 14m
Mon 12/78:05 pm -
2 stops20h 23m
Deal found 10/1![Delta logo]()
$1,302
This LATAM Airlines deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/1412:20 pm -
2 stops19h 10m
Wed 11/252:55 pm -
2 stops22h 06m
Deal found 10/1![LATAM Airlines logo]()
$1,328
This United Airlines deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” 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 11/146:15 am -
1 stop22h 05m
Wed 11/2511:55 pm -
1 stop19h 51m
Deal found 10/1![United Airlines logo]()
$1,263
This LATAM Airlines deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/142:31 pm -
2 stops22h 29m
Sun 11/225:35 pm -
2 stops18h 25m
Deal found 10/1![LATAM Airlines logo]()
$1,358
This Delta deal was found by Cheapflights users on 10/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/1211:00 am -
2 stops17h 40m
Fri 1/228:05 pm -
2 stops17h 43m
Deal found 10/4![Delta logo]()
$1,383
This Mytrip deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/34:05 pm -
3 stops34h 35m
Mon 12/77:05 am -
3 stops35h 21m
Deal found 10/1![Multiple Airlines logo]()
$1,607
This United Airlines deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” 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 12/126:55 pm -
2 stops35h 25m
Fri 1/2211:55 pm -
2 stops26h 29m
Deal found 10/1![United Airlines logo]()
$1,330
This Delta deal was found by Cheapflights users on 10/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/312:00 pm -
2 stops25h 00m
Sun 12/205:35 pm -
2 stops18h 32m
Deal found 10/4![Delta logo]()
$1,408
This LATAM Airlines deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” 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 12/176:00 am -
2 stops33h 35m
Fri 1/2211:35 pm -
1 stop14h 13m
Deal found 10/1![LATAM Airlines logo]()
$1,521
This United Airlines deal was found by Cheapflights users on 10/3. Clicking the “Pick Dates” 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 11/205:00 am -
2 stops23h 20m
Sun 11/2911:55 pm -
1 stop25h 30m
Deal found 10/3![United Airlines logo]()
$1,396
This Delta deal was found by Cheapflights users on 10/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/44:00 pm -
2 stops32h 00m
Sun 12/2011:35 pm -
1 stop18h 08m
Deal found 10/4![Delta logo]()
$1,506
This LATAM Airlines deal was found by Cheapflights users on 10/2. Clicking the “Pick Dates” 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 stops21h 59m
Thu 12/1010:35 am -
2 stops32h 49m
Deal found 10/2![LATAM Airlines logo]()
$1,571
This Delta deal was found by Cheapflights users on 10/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/510:00 am -
2 stops25h 00m
Sun 12/205:35 pm -
2 stops18h 32m
Deal found 10/4![Delta logo]()
$1,736
Last-minute flights from St. Louis to ArgentinaDiscover last-minute flight deals from St. Louis to Argentina. Data last updated October 4, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Argentina. Data last updated October 4, 2026 and is based on user searches.
This LATAM Airlines deal was found by Cheapflights users on 10/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/2612:00 pm -
2 stops18h 30m
Mon 11/95:35 pm -
2 stops26h 08m
Deal found 10/4![LATAM Airlines logo]()
$1,298
This Mytrip deal was found by Cheapflights users on 9/30. Clicking the “Pick Dates” 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 10/286:44 pm -
3 stops29h 56m
Wed 11/42:40 pm -
3 stops35h 36m
Deal found 9/30![Multiple Airlines logo]()
$1,280
This Mytrip deal was found by Cheapflights users on 9/30. Clicking the “Pick Dates” 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 11/26:44 pm -
3 stops30h 01m
Tue 12/811:00 am -
2 stops31h 26m
Deal found 9/30![Multiple Airlines logo]()
$1,379
This LATAM Airlines deal was found by Cheapflights users on 10/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/512:00 pm -
2 stops27h 35m
Sun 12/2011:35 pm -
1 stop19h 53m
Deal found 10/4![LATAM Airlines logo]()
$1,328
This United Airlines deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” 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 11/146:15 am -
1 stop22h 05m
Wed 11/2511:55 pm -
1 stop19h 51m
Deal found 10/1![United Airlines logo]()
$1,263
This American Airlines deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” 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 11/1411:23 am -
2 stops16h 57m
Wed 11/2510:25 pm -
1 stop14h 59m
Deal found 10/1![American Airlines logo]()
$1,267
This LATAM Airlines deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/1412:20 pm -
2 stops19h 10m
Wed 11/252:55 pm -
2 stops22h 06m
Deal found 10/1![LATAM Airlines logo]()
$1,328
This LATAM Airlines deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/142:31 pm -
2 stops22h 29m
Sun 11/225:35 pm -
2 stops18h 25m
Deal found 10/1![LATAM Airlines logo]()
$1,358
This Mytrip deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” 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 11/147:59 pm -
3 stops35h 01m
Sun 11/222:40 pm -
2 stops30h 00m
Deal found 10/1![Multiple Airlines logo]()
$1,392
This American Airlines deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” 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 11/1512:58 pm -
1 stop16h 17m
Sun 11/2210:25 pm -
1 stop17h 01m
Deal found 10/1![American Airlines logo]()
$1,233
This Mytrip deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” 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 11/154:26 pm -
3 stops33h 04m
Sun 11/222:40 pm -
2 stops30h 00m
Deal found 10/1![Multiple Airlines logo]()
$1,372
This KAYAK deal was found by Cheapflights users on 10/3. Clicking the “Pick Dates” 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 11/206:15 am -
1 stop24h 05m
Sun 11/2910:05 pm -
1 stop27h 20m
Deal found 10/3![Multiple Airlines logo]()
$1,362
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 October 4, 2026.
Search for one-way flight options from St. Louis to Argentina. Find affordable one-way fares based on user searches. Data last updated October 4, 2026.
This KAYAK deal was found by Cheapflights users on 10/2. Clicking the “Pick Dates” 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 12/76:30 am -
2 stops36h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/2![Copa Airlines logo]()
$558
This KAYAK deal was found by Cheapflights users on 10/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/26:30 am -
2 stops39h 22m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/1![Copa Airlines logo]()
$624
This Ovago deal was found by Cheapflights users on 9/30. Clicking the “Pick Dates” 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.
Sun 3/711:19 am -
2 stops22h 41m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/30![GOL logo]()
$725
This Air Canada deal was found by Cheapflights users on 10/2. Clicking the “Pick Dates” 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 stops22h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/2![Multiple Airlines logo]()
$795
This Kiwi.com deal was found by Cheapflights users on 10/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/104:30 pm -
3 stops39h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/2![Multiple Airlines logo]()
$800
This Kiwi.com deal was found by Cheapflights users on 10/2. Clicking the “Pick Dates” 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 10/126:35 pm -
3 stops59h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/2![Multiple Airlines logo]()
$803
This KAYAK deal was found by Cheapflights users on 10/2. Clicking the “Pick Dates” 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 3/78:33 am -
2 stops27h 27m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/2![Copa Airlines logo]()
$839
This LATAM Airlines deal was found by Cheapflights users on 9/30. Clicking the “Pick Dates” 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 12/72:33 pm -
2 stops26h 27m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/30![LATAM Airlines logo]()
$844
This American Airlines deal was found by Cheapflights users on 9/30. Clicking the “Pick Dates” 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 3/71:36 pm -
2 stops17h 39m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/30![American Airlines logo]()
$844
This Delta deal was found by Cheapflights users on 10/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/112:25 pm -
2 stops47h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/2![Delta logo]()
$861
This Kiwi.com deal was found by Cheapflights users on 10/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/114:30 pm -
3 stops47h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/2![Multiple Airlines logo]()
$866
This Delta deal was found by Cheapflights users on 10/2. Clicking the “Pick Dates” 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 10/96:00 am -
2 stops23h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/2![Delta logo]()
$874
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 October 4, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,049 (Mytrip) |
One-way from | $558 (KAYAK) |
Popular in | May |
Cheapest in | March |
Average price | $1,232 |
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 October 4, 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 12/7
6:30 am-12:52 am
2 stops39h 22m
Buenos Aires Ministro Pistarini
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$618
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
$618
St. LouisBuenos Aires
STL Lambert-St Louis - AEP Buenos Aires Jorge Newbery
STLAEP
Lambert-St Louis
Sun 3/7
12:20 pm-1:00 pm
2 stops21h 40m
Buenos Aires Jorge Newbery
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$725
St. LouisBuenos Aires
STL Lambert-St Louis - AEP Buenos Aires Jorge Newbery
STLAEP
Lambert-St Louis
Sat 10/10
4:30 pm-10:20 am
3 stops39h 50m
Buenos Aires Jorge Newbery
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$800
St. LouisBuenos Aires
STL Lambert-St Louis - EZE Buenos Aires Ministro Pistarini
STLEZE
Lambert-St Louis
Sun 3/7
8:33 am-3:00 pm
2 stops27h 27m
Buenos Aires Ministro Pistarini
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$839
St. LouisBuenos Aires
STL Lambert-St Louis - AEP Buenos Aires Jorge Newbery
STLAEP
Lambert-St Louis
Mon 12/7
2:33 pm-8:00 pm
2 stops26h 27m
Buenos Aires Jorge Newbery
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$844
St. LouisBuenos Aires
STL Lambert-St Louis - AEP Buenos Aires Jorge Newbery
STLAEP
Lambert-St Louis
Mon 10/12
6:00 am-7:40 am
2 stops23h 40m
Buenos Aires Jorge Newbery
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$844
Quickest round-trip
St. LouisBuenos Aires
STL Lambert-St Louis - EZE Buenos Aires Ministro Pistarini
STLEZE
Lambert-St Louis
Sun 3/7
12:20 pm-9:10 am
1 stop17h 50m
Buenos Aires Ministro Pistarini
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$844
St. LouisBuenos Aires
STL Lambert-St Louis - EZE Buenos Aires Ministro Pistarini
STLEZE
Lambert-St Louis
Mon 12/7
8:30 am-9:20 am
1 stop21h 50m
Buenos Aires Ministro Pistarini
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$844
St. LouisBuenos Aires
STL Lambert-St Louis - EZE Buenos Aires Ministro Pistarini
STLEZE
Lambert-St Louis
Mon 12/7
10:06 am-9:40 am
1 stop20h 34m
Buenos Aires Ministro Pistarini
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$844
Showing 1-10 of 31 resultsSorted by cheapest first
Best time to book a flight from St. Louis to Argentina
Have a flexible travel schedule? Discover the best time to fly to Argentina from St. Louis with our price prediction graph.
STL-EZE
STL-AEP
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from St. Louis to Argentina
STL-AR0
STL-EZE
STL-AEP
What is the cheapest month to book a flight from St. Louis to Argentina?
Currently, November is the cheapest month in which you can book a flight from St. Louis to Argentina (average of $431). Flying from St. Louis to Argentina in January is currently the most expensive (average of $1,595). 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 October 4, 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.
Comfort
7.8
Food
7.2
Overall
7.8
Boarding
8.1
Crew
8.5
Entertainment
7.8
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
Comfort
7.8
Food
7.2
Overall
7.8
Boarding
8.1
Crew
8.5
Entertainment
7.8
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
Comfort
7.8
Food
7.2
Overall
7.8
Boarding
8.1
Crew
8.5
Entertainment
7.8
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
Comfort
7.8
Food
7.2
Overall
7.8
Boarding
8.1
Crew
8.5
Entertainment
7.8
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
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 October 4, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 3 airlines flying from St. Louis to Argentina
Discover the top 3 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 October 4, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$431 | Average$1,550 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$884 | Average$1,173 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$1,147 | Average$1,327 | FlexibilityNo cancel fee | On-time71% |