$355+ 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 10/8. Fares are subject to change and may not be available on all flights or dates of travel.
STL — EZE
Aug 25 — Sep 11
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
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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 July 26, 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 July 26, 2026.
This oojo deal was found by Cheapflights users on 7/21. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/285:28 pm
STL
- AEP
2 stops20h 32m
LATAM Airlines
Sun 11/88:05 pm
AEP
- STL
2 stops30h 34m
LATAM Airlines
Deal found 7/21![LATAM Airlines logo]()
$1,129
This oojo deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/29:00 am
STL
- EZE
2 stops21h 40m
LATAM Airlines
Thu 12/177:20 am
EZE
- STL
2 stops19h 19m
LATAM Airlines
Deal found 7/22![LATAM Airlines logo]()
$1,133
This LATAM Airlines deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/21:30 pm
STL
- AEP
2 stops23h 30m
LATAM Airlines
Thu 12/179:25 am
AEP
- STL
2 stops28h 23m
LATAM Airlines
Deal found 7/23![LATAM Airlines logo]()
$1,148
This Delta deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/24:13 pm
STL
- EZE
1 stop15h 42m
Delta
Thu 12/177:20 am
EZE
- STL
2 stops20h 16m
Delta
Deal found 7/22![Delta logo]()
$1,148
This oojo deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/162:25 pm
STL
- AEP
2 stops23h 35m
LATAM Airlines
Sun 11/228:05 pm
AEP
- STL
2 stops30h 34m
LATAM Airlines
Deal found 7/22![LATAM Airlines logo]()
$1,151
This oojo deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/1310:02 am
STL
- EZE
2 stops21h 38m
LATAM Airlines
Sat 11/141:10 pm
EZE
- STL
2 stops24h 38m
LATAM Airlines
Deal found 7/22![LATAM Airlines logo]()
$1,156
This oojo deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/162:25 pm
STL
- EZE
2 stops17h 15m
LATAM Airlines
Sun 11/227:20 am
EZE
- STL
2 stops30h 28m
LATAM Airlines
Deal found 7/22![LATAM Airlines logo]()
$1,194
This United Airlines deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/93:13 pm
STL
- EZE
1 stop14h 47m
United Airlines
Wed 9/169:00 pm
EZE
- STL
1 stop23h 32m
United Airlines
Deal found 7/26![United Airlines logo]()
$1,198
This oojo deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/1310:02 am
STL
- AEP
2 stops19h 38m
LATAM Airlines
Sat 11/148:05 pm
AEP
- STL
2 stops30h 34m
LATAM Airlines
Deal found 7/22![LATAM Airlines logo]()
$1,204
This Justfly.com deal was found by Cheapflights users on 7/21. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/277:20 pm
STL
- EZE
2 stops29h 40m
LATAM Airlines
Tue 11/37:20 am
EZE
- STL
2 stops19h 28m
LATAM Airlines
Deal found 7/21![LATAM Airlines logo]()
$1,213
This American Airlines deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/45:00 am
STL
- EZE
1 stop23h 00m
American Airlines
Sun 9/1310:15 pm
EZE
- STL
1 stop17h 06m
American Airlines
Deal found 7/24![American Airlines logo]()
$1,218
This Mytrip deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/222:40 pm
STL
- EZE
3 stops32h 40m
Multiple Airlines
Mon 10/56:00 am
EZE
- STL
3 stops34h 00m
Multiple Airlines
Deal found 7/23![Multiple Airlines logo]()
$1,233
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 July 26, 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 July 26, 2026.
This LATAM Airlines deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2712:00 pm
STL
- AEP
2 stops18h 30m
LATAM Airlines
Tue 11/38:05 pm
AEP
- STL
2 stops30h 43m
LATAM Airlines
Deal found 7/21![LATAM Airlines logo]()
$1,148
This Delta deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/24:13 pm
STL
- EZE
1 stop15h 42m
Delta
Thu 12/177:20 am
EZE
- STL
2 stops20h 16m
Delta
Deal found 7/22![Delta logo]()
$1,148
This United Airlines deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/93:13 pm
STL
- EZE
1 stop14h 47m
United Airlines
Wed 9/169:00 pm
EZE
- STL
1 stop23h 32m
United Airlines
Deal found 7/26![United Airlines logo]()
$1,198
This Mytrip deal was found by Cheapflights users on 7/21. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/274:05 pm
STL
- AEP
3 stops25h 35m
Multiple Airlines
Tue 11/37:00 am
AEP
- STL
3 stops35h 26m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$1,438
This LATAM Airlines deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2110:02 am
STL
- AEP
2 stops19h 38m
LATAM Airlines
Wed 10/285:35 pm
AEP
- STL
2 stops25h 31m
LATAM Airlines
Deal found 7/22![LATAM Airlines logo]()
$1,148
This Delta deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/153:44 pm
STL
- EZE
1 stop16h 01m
Delta
Tue 8/252:55 pm
EZE
- STL
2 stops19h 13m
Delta
Deal found 7/24![Delta logo]()
$1,258
This United Airlines deal was found by Cheapflights users on 7/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/46:53 pm
STL
- EZE
2 stops35h 07m
United Airlines
Fri 9/119:00 pm
EZE
- STL
1 stop19h 15m
United Airlines
Deal found 7/21![United Airlines logo]()
$1,262
This LATAM Airlines deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/21:30 pm
STL
- AEP
2 stops23h 30m
LATAM Airlines
Thu 12/179:25 am
AEP
- STL
2 stops28h 23m
LATAM Airlines
Deal found 7/23![LATAM Airlines logo]()
$1,148
This Mytrip deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2112:10 pm
STL
- AEP
3 stops30h 50m
Multiple Airlines
Wed 10/289:00 am
AEP
- STL
2 stops32h 26m
Multiple Airlines
Deal found 7/22![Multiple Airlines logo]()
$1,454
This PocketFare deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure PocketFare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/222:30 pm
STL
- EZE
2 stops19h 00m
LATAM Airlines
Mon 10/58:10 pm
EZE
- STL
1 stop16h 41m
LATAM Airlines
Deal found 7/24![LATAM Airlines logo]()
$1,233
This LATAM Airlines deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/45:23 pm
STL
- AEP
2 stops20h 37m
LATAM Airlines
Fri 9/115:35 pm
AEP
- STL
2 stops20h 57m
LATAM Airlines
Deal found 7/21![LATAM Airlines logo]()
$1,288
This LATAM Airlines deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2210:05 am
STL
- AEP
2 stops19h 35m
LATAM Airlines
Thu 9/243:45 pm
AEP
- STL
2 stops21h 10m
LATAM Airlines
Deal found 7/21![LATAM Airlines logo]()
$1,618
Last-minute flights from St. Louis to ArgentinaDiscover last-minute flight deals from St. Louis to Argentina. Data last updated July 26, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Argentina. Data last updated July 26, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/266:30 pm
STL
- EZE
1 stop35h 30m
United Airlines
Sat 8/19:00 pm
EZE
- STL
1 stop15h 07m
United Airlines
Deal found 7/22![United Airlines logo]()
$1,511
This Travelocity deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/266:00 am
STL
- EZE
2 stops41h 00m
LATAM Airlines
Fri 7/313:55 am
EZE
- STL
2 stops21h 25m
LATAM Airlines
Deal found 7/22![LATAM Airlines logo]()
$1,542
This oojo deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/266:00 am
STL
- AEP
2 stops26h 30m
LATAM Airlines
Sat 8/110:30 pm
AEP
- STL
2 stops37h 24m
LATAM Airlines
Deal found 7/22![LATAM Airlines logo]()
$1,569
This KAYAK deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/278:35 am
STL
- EZE
1 stop21h 25m
Multiple Airlines
Thu 8/279:00 pm
EZE
- STL
1 stop15h 10m
Multiple Airlines
Deal found 7/25![Multiple Airlines logo]()
$1,437
This Delta deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/271:22 pm
STL
- AEP
2 stops18h 18m
Delta
Thu 8/278:05 pm
AEP
- STL
2 stops20h 28m
Delta
Deal found 7/25![Delta logo]()
$1,441
This KAYAK deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/276:14 am
STL
- EZE
1 stop23h 46m
Copa Airlines
Thu 8/279:00 pm
EZE
- STL
2 stops19h 57m
Copa Airlines
Deal found 7/25![Copa Airlines logo]()
$1,441
This United Airlines deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/275:59 pm
STL
- EZE
2 stops36h 01m
United Airlines
Thu 8/279:00 pm
EZE
- STL
2 stops20h 38m
United Airlines
Deal found 7/25![United Airlines logo]()
$1,533
This oojo deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/1510:31 am
STL
- EZE
2 stops21h 09m
LATAM Airlines
Mon 8/243:55 am
EZE
- STL
2 stops33h 51m
LATAM Airlines
Deal found 7/24![LATAM Airlines logo]()
$1,238
This Delta deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/153:44 pm
STL
- EZE
1 stop16h 01m
Delta
Tue 8/252:55 pm
EZE
- STL
2 stops19h 13m
Delta
Deal found 7/24![Delta logo]()
$1,258
This KAYAK deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/165:23 pm
STL
- AEP
2 stops20h 37m
LATAM Airlines
Thu 8/205:35 pm
AEP
- STL
2 stops20h 11m
LATAM Airlines
Deal found 7/23![LATAM Airlines logo]()
$1,288
This oojo deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/1612:52 pm
STL
- EZE
1 stop18h 53m
LATAM Airlines
Thu 8/207:35 am
EZE
- STL
3 stops28h 19m
LATAM Airlines
Deal found 7/23![LATAM Airlines logo]()
$1,318
This United Airlines deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/1611:15 am
STL
- EZE
1 stop18h 45m
United Airlines
Thu 8/209:00 pm
EZE
- STL
1 stop15h 10m
United Airlines
Deal found 7/23![United Airlines logo]()
$1,489
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 July 26, 2026.
Search for one-way flight options from St. Louis to Argentina. Find affordable one-way fares based on user searches. Data last updated July 26, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/810:35 am
STL
- EZE
3 stops44h 41m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$355
This Kiwi.com deal was found by Cheapflights users on 7/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/15:27 pm
STL
- EZE
3 stops55h 33m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$365
This Kiwi.com deal was found by Cheapflights users on 7/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/15:27 pm
STL
- AEP
3 stops37h 03m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$427
This Kiwi.com deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/112:29 pm
STL
- EZE
3 stops35h 41m
Multiple Airlines
Deal found 7/25![Multiple Airlines logo]()
$435
This Kiwi.com deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/106:39 pm
STL
- EZE
2 stops34h 06m
Multiple Airlines
Deal found 7/25![Multiple Airlines logo]()
$455
This Kiwi.com deal was found by Cheapflights users on 7/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/88:10 pm
STL
- AEP
3 stops54h 10m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$492
This Kiwi.com deal was found by Cheapflights users on 7/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/84:09 pm
STL
- EZE
3 stops54h 56m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$528
This Kiwi.com deal was found by Cheapflights users on 7/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/84:09 pm
STL
- AEP
3 stops39h 46m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$537
This Kiwi.com deal was found by Cheapflights users on 7/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/74:57 pm
STL
- EZE
3 stops58h 03m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$557
This Kiwi.com deal was found by Cheapflights users on 7/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/67:10 pm
STL
- AEP
3 stops42h 55m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$580
This Kiwi.com deal was found by Cheapflights users on 7/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/54:57 pm
STL
- EZE
3 stops54h 08m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$583
This Kiwi.com deal was found by Cheapflights users on 7/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/54:09 pm
STL
- AEP
3 stops35h 31m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$625
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 July 26, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,126 (oojo) |
One-way from | $355 (Kiwi.com) |
Cheapflights Fare Finder
Customize your flight search to find flights from St. Louis to Argentina that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 26, 2026.
Use the filters below to find and compare flights from St. Louis to Argentina that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
St. LouisBuenos Aires
STL - AEP
STLAEP
Lambert-St Louis
Tue 10/27
12:00 pm-8:30 am
2 stops18h 30m
Buenos Aires Jorge Newbery
Tue 11/3
8:05 pm-11:48 pm
2 stops30h 43m
$1,148
St. LouisBuenos Aires
STL - EZE
STLEZE
Lambert-St Louis
Wed 12/2
4:13 pm-10:55 am
1 stop15h 42m
Buenos Aires Ministro Pistarini
Thu 12/17
7:20 am-12:36 am
2 stops20h 16m
$1,148
St. LouisBuenos Aires
STL - AEP
STLAEP
Lambert-St Louis
Wed 10/21
10:02 am-7:40 am
2 stops19h 38m
Buenos Aires Jorge Newbery
Wed 10/28
5:35 pm-5:06 pm
2 stops25h 31m
$1,148
St. LouisBuenos Aires
STL - AEP
STLAEP
Lambert-St Louis
Wed 12/2
1:30 pm-4:00 pm
2 stops23h 30m
Buenos Aires Jorge Newbery
Thu 12/17
9:25 am-10:48 am
2 stops28h 23m
$1,148
St. LouisBuenos Aires
STL - EZE
STLEZE
Lambert-St Louis
Wed 9/9
3:13 pm-8:00 am
1 stop14h 47m
Buenos Aires Ministro Pistarini
Wed 9/16
9:00 pm-6:32 pm
1 stop23h 32m
$1,198
St. LouisBuenos Aires
STL - EZE
STLEZE
Lambert-St Louis
Tue 9/22
2:30 pm-11:30 am
2 stops19h 00m
Buenos Aires Ministro Pistarini
Mon 10/5
8:10 pm-10:51 am
1 stop16h 41m
$1,233
Quickest round-trip
St. LouisBuenos Aires
STL - EZE
STLEZE
Lambert-St Louis
Sat 8/15
3:44 pm-9:45 am
1 stop16h 01m
Buenos Aires Ministro Pistarini
Tue 8/25
2:55 pm-8:08 am
2 stops19h 13m
$1,258
St. LouisBuenos Aires
STL - EZE
STLEZE
Lambert-St Louis
Fri 9/4
6:53 pm-8:00 am
2 stops35h 07m
Buenos Aires Ministro Pistarini
Fri 9/11
9:00 pm-2:15 pm
1 stop19h 15m
$1,262
St. LouisBuenos Aires
STL - AEP
STLAEP
Lambert-St Louis
Fri 9/4
5:23 pm-4:00 pm
2 stops20h 37m
Buenos Aires Jorge Newbery
Fri 9/11
5:35 pm-12:32 pm
2 stops20h 57m
$1,288
St. LouisBuenos Aires
STL - AEP
STLAEP
Lambert-St Louis
Tue 10/27
4:05 pm-7:40 pm
3 stops25h 35m
Buenos Aires Jorge Newbery
Tue 11/3
7:00 am-3:26 pm
3 stops35h 26m
$1,438
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
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 July 26, 2026.
Get a feel of what it's like to fly with Delta and LATAM Airlines from St. Louis to Argentina by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
7.8
Food
7.2
Overall
7.8
Crew
8.5
Entertainment
7.8
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Food
7.2
Overall
7.8
Crew
8.5
Entertainment
7.8
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Food
7.2
Overall
7.8
Crew
8.5
Entertainment
7.8
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Related info for your journey
Find useful and relevant information for your journey from St. Louis to Argentina. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for St. Louis to Argentina
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Complete your trip
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St. Louis and Argentina flights
Browse other St. Louis and Argentina flight options. Last updated on July 26, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 2 airlines flying from St. Louis to Argentina
Discover the top 2 airlines that operate flights from St. Louis to Argentina. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 26, 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 |