$368+ 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 11/4. Fares are subject to change and may not be available on all flights or dates of travel.
STL — EZE
Sep 20 — Sep 271
Round-trip
1 adult, Economy
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Find cheap flights from St. Louis to Argentina with Cheapflights
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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
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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 August 21, 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 August 21, 2026.
This Expedia deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/25:37 pm -
1 stop13h 03m
Thu 12/179:30 pm -
1 stop16h 45m
Deal found 8/17![LATAM Airlines logo]()
$1,133
This Expedia deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/710:00 am -
2 stops20h 50m
Thu 3/411:35 pm -
1 stop21h 26m
Deal found 8/18![LATAM Airlines logo]()
$1,143
This Expedia deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/210:00 am -
2 stops27h 00m
Thu 12/1711:45 am -
2 stops26h 30m
Deal found 8/17![LATAM Airlines logo]()
$1,144
This Delta deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” 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 12/25:37 pm -
2 stops19h 23m
Tue 12/158:05 pm -
2 stops22h 49m
Deal found 8/17![Delta logo]()
$1,148
This Delta deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” 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 12/210:00 am -
2 stops17h 20m
Thu 12/175:00 pm -
2 stops21h 15m
Deal found 8/17![Delta logo]()
$1,148
This American Airlines deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” 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.
Wed 12/21:58 pm -
2 stops15h 17m
Thu 12/1710:10 am -
2 stops16h 48m
Deal found 8/17![American Airlines logo]()
$1,152
This FlightHub deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” 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 12/110:00 am -
1 stop20h 40m
Wed 12/1611:35 pm -
1 stop14h 40m
Deal found 8/17![LATAM Airlines logo]()
$1,159
This American Airlines deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” 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.
Thu 8/2012:45 pm -
2 stops16h 30m
Wed 9/28:50 pm -
1 stop15h 55m
Deal found 8/18![American Airlines logo]()
$1,169
This Mytrip deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” 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 10/192:40 pm -
3 stops32h 40m
Tue 11/311:00 am -
2 stops31h 26m
Deal found 8/16![Multiple Airlines logo]()
$1,177
This Delta deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” 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 9/1510:05 am -
1 stop21h 40m
Tue 9/228:10 pm -
1 stop14h 50m
Deal found 8/19![Delta logo]()
$1,178
This Orbitz deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/195:35 pm -
2 stops22h 55m
Tue 11/38:40 am -
2 stops29h 11m
Deal found 8/16![LATAM Airlines logo]()
$1,179
This Delta deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/295:37 pm -
2 stops17h 23m
Tue 12/155:35 pm -
2 stops18h 18m
Deal found 8/17![Delta logo]()
$1,188
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 August 21, 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 August 21, 2026.
This Delta deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” 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 11/305:37 pm -
2 stops17h 23m
Wed 12/165:35 pm -
2 stops18h 18m
Deal found 8/17![Delta logo]()
$1,148
This American Airlines deal was found by Cheapflights users on 8/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/22:54 pm -
1 stop14h 36m
Thu 12/1710:50 pm -
1 stop21h 59m
Deal found 8/21![American Airlines logo]()
$1,148
This LATAM Airlines deal was found by Cheapflights users on 8/20. 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 LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/285:35 pm -
2 stops22h 55m
Sun 11/12:55 pm -
2 stops21h 22m
Deal found 8/20![LATAM Airlines logo]()
$1,208
This Kiwi.com deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” 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 10/196:30 am -
1 stop18h 05m
Tue 11/38:00 am -
2 stops28h 40m
Deal found 8/16![Multiple Airlines logo]()
$1,217
This United Airlines deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” 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 9/126:53 pm -
2 stops35h 07m
Tue 10/139:00 pm -
1 stop15h 10m
Deal found 8/17![United Airlines logo]()
$1,222
This Delta deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” 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 12/110:00 am -
2 stops18h 40m
Wed 12/165:35 pm -
2 stops25h 57m
Deal found 8/17![Delta logo]()
$1,148
This United Airlines deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” 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 9/1311:15 am -
1 stop18h 45m
Wed 10/149:00 pm -
2 stops20h 43m
Deal found 8/17![United Airlines logo]()
$1,222
This LATAM Airlines deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” 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 10/295:35 pm -
2 stops20h 25m
Mon 11/25:35 pm -
2 stops20h 16m
Deal found 8/16![LATAM Airlines logo]()
$1,228
This Delta deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” 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 12/210:00 am -
2 stops18h 40m
Thu 12/175:35 pm -
2 stops18h 18m
Deal found 8/17![Delta logo]()
$1,148
This United Airlines deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” 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 9/126:53 pm -
2 stops35h 07m
Wed 10/149:00 pm -
1 stop15h 10m
Deal found 8/17![United Airlines logo]()
$1,222
This Delta deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” 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 11/305:37 pm -
2 stops19h 23m
Thu 12/175:35 pm -
2 stops18h 18m
Deal found 8/17![Delta logo]()
$1,148
This United Airlines deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” 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 11/196:15 am -
1 stop24h 05m
Mon 11/2310:05 pm -
1 stop14h 57m
Deal found 8/16![United Airlines logo]()
$1,228
This Delta deal was found by Cheapflights users on 8/21. 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.
Wed 12/210:00 am -
2 stops17h 20m
Thu 12/177:20 am -
2 stops20h 20m
Deal found 8/21![Delta logo]()
$1,148
This Delta deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” 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 1/147:20 am -
2 stops20h 00m
Thu 1/2811:35 pm -
1 stop21h 26m
Deal found 8/16![Delta logo]()
$1,148
This Delta deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” 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 9/1510:05 am -
1 stop21h 40m
Tue 9/228:10 pm -
1 stop14h 50m
Deal found 8/19![Delta logo]()
$1,178
This Delta deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” 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 12/110:00 am -
2 stops18h 40m
Fri 12/185:35 pm -
2 stops20h 13m
Deal found 8/17![Delta logo]()
$1,188
This Delta deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” 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 11/3010:00 am -
2 stops18h 40m
Fri 12/185:35 pm -
2 stops22h 22m
Deal found 8/17![Delta logo]()
$1,188
This Delta deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” 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 10/110:05 am -
2 stops19h 35m
Thu 10/88:05 pm -
2 stops19h 15m
Deal found 8/17![Delta logo]()
$1,228
This Delta deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” 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 9/1612:00 pm -
1 stop19h 45m
Wed 9/238:10 pm -
1 stop16h 45m
Deal found 8/18![Delta logo]()
$1,228
Last-minute flights from St. Louis to ArgentinaDiscover last-minute flight deals from St. Louis to Argentina. Data last updated August 21, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Argentina. Data last updated August 21, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” 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.
Thu 8/2012:45 pm -
2 stops16h 30m
Wed 9/28:50 pm -
1 stop15h 55m
Deal found 8/18![American Airlines logo]()
$1,169
This American Airlines deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” 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 8/2211:35 am -
1 stop17h 40m
Mon 8/2410:30 pm -
1 stop14h 09m
Deal found 8/19![American Airlines logo]()
$1,208
This Delta deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” 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 9/211:00 am -
2 stops18h 40m
Tue 9/88:05 pm -
2 stops21h 49m
Deal found 8/17![Delta logo]()
$1,228
This Delta deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” 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 9/45:23 pm -
2 stops20h 37m
Tue 9/88:05 pm -
2 stops21h 49m
Deal found 8/19![Delta logo]()
$1,248
This United Airlines deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” 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 9/126:53 pm -
2 stops35h 07m
Thu 10/159:00 pm -
1 stop15h 10m
Deal found 8/17![United Airlines logo]()
$1,222
This United Airlines deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” 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 9/1311:15 am -
1 stop18h 45m
Tue 10/139:00 pm -
1 stop15h 10m
Deal found 8/17![United Airlines logo]()
$1,218
This United Airlines deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” 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 9/143:13 pm -
1 stop14h 47m
Wed 10/149:00 pm -
1 stop19h 10m
Deal found 8/17![United Airlines logo]()
$1,188
This United Airlines deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” 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 9/148:30 am -
2 stops21h 30m
Thu 10/159:00 pm -
2 stops24h 01m
Deal found 8/17![United Airlines logo]()
$1,192
This Delta deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” 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 9/1510:05 am -
1 stop21h 40m
Tue 9/228:10 pm -
1 stop14h 50m
Deal found 8/19![Delta logo]()
$1,178
This American Airlines deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/155:00 am -
1 stop24h 15m
Tue 10/1310:30 pm -
1 stop21h 19m
Deal found 8/17![American Airlines logo]()
$1,201
This Delta deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” 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 9/166:45 pm -
1 stop13h 00m
Tue 10/138:10 pm -
1 stop14h 59m
Deal found 8/17![Delta logo]()
$1,228
This Delta deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” 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 9/1612:00 pm -
2 stops19h 40m
Wed 10/144:45 pm -
2 stops20h 06m
Deal found 8/17![Delta logo]()
$1,232
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 August 21, 2026.
Search for one-way flight options from St. Louis to Argentina. Find affordable one-way fares based on user searches. Data last updated August 21, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/46:44 pm -
3 stops57h 46m
Deal found 8/20![Multiple Airlines logo]()
$368
This Kiwi.com deal was found by Cheapflights users on 8/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/46:44 pm -
3 stops57h 01m
Deal found 8/20![Multiple Airlines logo]()
$376
This Kiwi.com deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” 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.
Thu 10/154:30 pm -
3 stops39h 55m
Deal found 8/16![Multiple Airlines logo]()
$379
This Kiwi.com deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” 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.
Thu 10/154:30 pm -
3 stops52h 58m
Deal found 8/16![Multiple Airlines logo]()
$382
This Kiwi.com deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” 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 12/76:05 pm -
3 stops36h 45m
Deal found 8/18![Multiple Airlines logo]()
$429
This Kiwi.com deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” 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 12/72:59 pm -
3 stops37h 31m
Deal found 8/18![Multiple Airlines logo]()
$437
This Kiwi.com deal was found by Cheapflights users on 8/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/294:26 pm -
3 stops50h 54m
Deal found 8/20![Multiple Airlines logo]()
$463
This Kiwi.com deal was found by Cheapflights users on 8/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2912:14 pm -
3 stops37h 09m
Deal found 8/20![Multiple Airlines logo]()
$496
This Air Canada deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” 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
Deal found 8/17![Multiple Airlines logo]()
$755
This Avianca deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” 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 -
2 stops17h 46m
Deal found 8/17![Avianca logo]()
$769
This LATAM Airlines deal was found by Cheapflights users on 8/20. 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 LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/410:25 am -
2 stops19h 05m
Deal found 8/20![LATAM Airlines logo]()
$784
This American Airlines deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” 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.
Wed 12/25:00 pm -
1 stop14h 15m
Deal found 8/18![American Airlines logo]()
$784
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 August 21, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,133 (Expedia) |
One-way from | $368 (Kiwi.com) |
Popular in | May |
Cheapest in | October |
Average price | $1,287 |
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 August 21, 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
Quickest round-trip
St. LouisBuenos Aires
STL Lambert-St Louis - AEP Buenos Aires Jorge Newbery
STLAEP
Lambert-St Louis
Mon 11/30
5:37 pm-2:00 pm
2 stops17h 23m
Buenos Aires Jorge Newbery
Wed 12/16
5:35 pm-8:53 am
2 stops18h 18m
$1,148
St. LouisBuenos Aires
STL Lambert-St Louis - EZE Buenos Aires Ministro Pistarini
STLEZE
Lambert-St Louis
Wed 12/2
2:54 pm-8:30 am
1 stop14h 36m
Buenos Aires Ministro Pistarini
Thu 12/17
10:50 pm-5:49 pm
1 stop21h 59m
$1,148
St. LouisBuenos Aires
STL Lambert-St Louis - AEP Buenos Aires Jorge Newbery
STLAEP
Lambert-St Louis
Tue 12/1
10:00 am-7:40 am
2 stops18h 40m
Buenos Aires Jorge Newbery
Wed 12/16
5:35 pm-4:32 pm
2 stops25h 57m
$1,148
St. LouisBuenos Aires
STL Lambert-St Louis - AEP Buenos Aires Jorge Newbery
STLAEP
Lambert-St Louis
Wed 12/2
10:00 am-7:40 am
2 stops18h 40m
Buenos Aires Jorge Newbery
Thu 12/17
5:35 pm-8:53 am
2 stops18h 18m
$1,148
St. LouisBuenos Aires
STL Lambert-St Louis - AEP Buenos Aires Jorge Newbery
STLAEP
Lambert-St Louis
Mon 11/30
5:37 pm-4:00 pm
2 stops19h 23m
Buenos Aires Jorge Newbery
Thu 12/17
5:35 pm-8:53 am
2 stops18h 18m
$1,148
St. LouisBuenos Aires
STL Lambert-St Louis - EZE Buenos Aires Ministro Pistarini
STLEZE
Lambert-St Louis
Wed 12/2
10:00 am-6:20 am
2 stops17h 20m
Buenos Aires Ministro Pistarini
Thu 12/17
7:20 am-12:40 am
2 stops20h 20m
$1,148
St. LouisBuenos Aires
STL Lambert-St Louis - EZE Buenos Aires Ministro Pistarini
STLEZE
Lambert-St Louis
Thu 1/14
7:20 am-6:20 am
2 stops20h 00m
Buenos Aires Ministro Pistarini
Thu 1/28
11:35 pm-6:01 pm
1 stop21h 26m
$1,148
St. LouisBuenos Aires
STL Lambert-St Louis - EZE Buenos Aires Ministro Pistarini
STLEZE
Lambert-St Louis
Tue 9/15
10:05 am-9:45 am
1 stop21h 40m
Buenos Aires Ministro Pistarini
Tue 9/22
8:10 pm-9:00 am
1 stop14h 50m
$1,178
St. LouisBuenos Aires
STL Lambert-St Louis - AEP Buenos Aires Jorge Newbery
STLAEP
Lambert-St Louis
Tue 12/1
10:00 am-7:40 am
2 stops18h 40m
Buenos Aires Jorge Newbery
Fri 12/18
5:35 pm-10:48 am
2 stops20h 13m
$1,188
St. LouisBuenos Aires
STL Lambert-St Louis - AEP Buenos Aires Jorge Newbery
STLAEP
Lambert-St Louis
Mon 11/30
10:00 am-7:40 am
2 stops18h 40m
Buenos Aires Jorge Newbery
Fri 12/18
5:35 pm-12:57 pm
2 stops22h 22m
$1,188
Showing 1-10 of 33 resultsSorted by cheapest first
Best time to book a flight from St. Louis to Argentina
Have a flexible travel schedule? Discover the best time to fly to Argentina from St. Louis with our price prediction graph.
STL-AEP
STL-EZE
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from St. Louis to Argentina
STL-AR0
STL-AEP
STL-EZE
No data available for this route at this time. Please check back soon.
Reviews of airlines servicing Argentina
Get insights into the airlines that provide service to Argentina. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Argentina. Reviews last updated August 21, 2026.
Get a feel of what it's like to fly with Delta,LATAM Airlines, andAmerican Airlines from St. Louis to Argentina by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Comfort
7.8
Food
7.2
Entertainment
7.8
Crew
8.5
Overall
7.8
Reviews
1 / 20
10.0
ExcellentSalvador,Aug 2026
PHL - DTW
Boarding
8.1
Comfort
7.8
Food
7.2
Entertainment
7.8
Crew
8.5
Overall
7.8
Reviews
1 / 20
10.0
ExcellentSalvador,Aug 2026
PHL - DTW
Boarding
8.1
Comfort
7.8
Food
7.2
Entertainment
7.8
Crew
8.5
Overall
7.8
Reviews
1 / 20
10.0
ExcellentSalvador,Aug 2026
PHL - DTW
Boarding
8.1
Comfort
7.8
Food
7.2
Entertainment
7.8
Crew
8.5
Overall
7.8
Reviews
1 / 20
10.0
ExcellentSalvador,Aug 2026
PHL - DTW
Related info for your journey
Find useful and relevant information for your journey from St. Louis to Argentina. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for St. Louis to Argentina
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Complete your trip
Complete your trip to Argentina by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from St. Louis to Argentina by cabin class
Find flights from St. Louis to Argentina, based on your preferred cabin class, be it economy, premium economy, business, or first class.
St. Louis and Argentina flights
Browse other St. Louis and Argentina flight options. Last updated on August 21, 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 August 21, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$884 | Average$1,173 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$1,025 | Average$1,414 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$1,147 | Average$1,327 | FlexibilityNo cancel fee | On-time71% |