$496+ 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 7/13. Fares are subject to change and may not be available on all flights or dates of travel.
STL — EZE
Aug 7 — Aug 141
Round-trip
1 adult, Economy
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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 July 8, 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 8, 2026.
This oojo deal was found by Cheapflights users on 7/6. Clicking the “Pick Dates” 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 12/211:51 am
STL
- EZE
2 stops18h 49m
LATAM Airlines
Thu 12/171:10 pm
EZE
- STL
2 stops30h 56m
LATAM Airlines
Deal found 7/6![LATAM Airlines logo]()
$1,126
This LATAM Airlines deal was found by Cheapflights users on 7/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/24:40 pm
STL
- AEP
2 stops20h 20m
LATAM Airlines
Thu 12/173:50 pm
AEP
- STL
2 stops19h 22m
LATAM Airlines
Deal found 7/7![LATAM Airlines logo]()
$1,148
This United Airlines deal was found by Cheapflights users on 7/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/21:08 pm
STL
- EZE
2 stops17h 12m
United Airlines
Thu 12/1710:05 pm
EZE
- STL
1 stop14h 37m
United Airlines
Deal found 7/7![United Airlines logo]()
$1,148
This oojo deal was found by Cheapflights users on 7/6. Clicking the “Pick Dates” 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.
Thu 8/2011:00 am
STL
- EZE
2 stops20h 40m
LATAM Airlines
Thu 8/277:35 am
EZE
- STL
2 stops18h 23m
LATAM Airlines
Deal found 7/6![LATAM Airlines logo]()
$1,155
This American Airlines deal was found by Cheapflights users on 7/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2011:35 am
STL
- EZE
1 stop19h 10m
American Airlines
Thu 8/2710:30 pm
EZE
- STL
1 stop14h 09m
American Airlines
Deal found 7/7![American Airlines logo]()
$1,163
This oojo deal was found by Cheapflights users on 7/6. Clicking the “Pick Dates” 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.
Thu 12/1011:51 am
STL
- EZE
2 stops18h 49m
LATAM Airlines
Sat 12/197:20 am
EZE
- STL
2 stops19h 19m
LATAM Airlines
Deal found 7/6![LATAM Airlines logo]()
$1,164
This United Airlines deal was found by Cheapflights users on 7/6. Clicking the “Pick Dates” 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 8/2011:15 am
STL
- EZE
1 stop18h 45m
United Airlines
Thu 8/279:00 pm
EZE
- STL
2 stops22h 06m
United Airlines
Deal found 7/6![United Airlines logo]()
$1,167
This LATAM Airlines deal was found by Cheapflights users on 7/6. Clicking the “Pick Dates” 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 10/285:28 pm
STL
- AEP
2 stops24h 12m
LATAM Airlines
Sun 11/15:35 pm
AEP
- STL
2 stops26h 31m
LATAM Airlines
Deal found 7/6![LATAM Airlines logo]()
$1,178
This United Airlines deal was found by Cheapflights users on 7/6. Clicking the “Pick Dates” 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 8/55:59 pm
STL
- EZE
2 stops36h 01m
United Airlines
Tue 8/119:00 pm
EZE
- STL
2 stops27h 00m
United Airlines
Deal found 7/6![United Airlines logo]()
$1,182
This LATAM Airlines deal was found by Cheapflights users on 7/5. Clicking the “Pick Dates” 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 8/295:33 pm
STL
- AEP
2 stops20h 27m
LATAM Airlines
Sun 9/68:05 pm
AEP
- STL
2 stops17h 41m
LATAM Airlines
Deal found 7/5![LATAM Airlines logo]()
$1,188
This American Airlines deal was found by Cheapflights users on 7/5. Clicking the “Pick Dates” 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 8/2911:35 am
STL
- EZE
1 stop19h 10m
American Airlines
Sun 9/68:50 pm
EZE
- STL
1 stop15h 55m
American Airlines
Deal found 7/5![American Airlines logo]()
$1,193
This United Airlines deal was found by Cheapflights users on 7/4. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/82:57 pm
STL
- EZE
1 stop15h 03m
United Airlines
Sun 7/129:00 pm
EZE
- STL
1 stop22h 42m
United Airlines
Deal found 7/4![United Airlines logo]()
$1,208
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 8, 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 8, 2026.
This LATAM Airlines deal was found by Cheapflights users on 7/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/24:40 pm
STL
- AEP
2 stops20h 20m
LATAM Airlines
Thu 12/173:50 pm
AEP
- STL
2 stops19h 22m
LATAM Airlines
Deal found 7/7![LATAM Airlines logo]()
$1,148
This United Airlines deal was found by Cheapflights users on 7/4. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/211:00 am
STL
- EZE
1 stop17h 20m
United Airlines
Thu 12/1710:05 pm
EZE
- STL
1 stop14h 37m
United Airlines
Deal found 7/4![United Airlines logo]()
$1,148
This Delta deal was found by Cheapflights users on 7/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/29:00 am
STL
- EZE
2 stops18h 20m
Delta
Thu 12/177:20 am
EZE
- STL
2 stops20h 16m
Delta
Deal found 7/7![Delta logo]()
$1,148
This Air Canada deal was found by Cheapflights users on 7/3. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/24:05 pm
STL
- AEP
2 stops18h 35m
Multiple Airlines
Thu 12/171:40 pm
AEP
- STL
3 stops28h 46m
Multiple Airlines
Deal found 7/3![Multiple Airlines logo]()
$1,884
This United Airlines deal was found by Cheapflights users on 7/6. Clicking the “Pick Dates” 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 8/2011:15 am
STL
- EZE
1 stop18h 45m
United Airlines
Thu 8/279:00 pm
EZE
- STL
2 stops22h 06m
United Airlines
Deal found 7/6![United Airlines logo]()
$1,167
This LATAM Airlines deal was found by Cheapflights users on 7/4. 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.
Wed 10/282:25 pm
STL
- AEP
2 stops27h 35m
LATAM Airlines
Sun 11/15:35 pm
AEP
- STL
2 stops26h 31m
LATAM Airlines
Deal found 7/4![LATAM Airlines logo]()
$1,178
This Delta deal was found by Cheapflights users on 7/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2011:00 am
STL
- AEP
2 stops18h 40m
Delta
Thu 8/278:05 pm
AEP
- STL
2 stops20h 28m
Delta
Deal found 7/7![Delta logo]()
$1,178
This Delta deal was found by Cheapflights users on 7/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/49:00 am
STL
- AEP
2 stops19h 40m
Delta
Sun 1/245:35 pm
AEP
- STL
2 stops20h 13m
Delta
Deal found 7/7![Delta logo]()
$1,188
This LATAM Airlines deal was found by Cheapflights users on 7/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/1310:40 am
STL
- AEP
2 stops19h 50m
LATAM Airlines
Thu 9/178:40 am
AEP
- STL
2 stops28h 15m
LATAM Airlines
Deal found 7/7![LATAM Airlines logo]()
$1,238
This Delta deal was found by Cheapflights users on 7/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/49:00 am
STL
- AEP
2 stops19h 40m
Delta
Tue 1/125:35 pm
AEP
- STL
2 stops20h 13m
Delta
Deal found 7/6![Delta logo]()
$1,333
This Delta deal was found by Cheapflights users on 7/6. Clicking the “Pick Dates” 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 8/511:00 am
STL
- AEP
2 stops18h 40m
Delta
Tue 8/116:20 pm
AEP
- STL
2 stops19h 26m
Delta
Deal found 7/6![Delta logo]()
$1,373
This oojo deal was found by Cheapflights users on 7/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/284:40 pm
STL
- AEP
2 stops20h 20m
LATAM Airlines
Sat 1/168:05 pm
AEP
- STL
2 stops30h 34m
LATAM Airlines
Deal found 7/6![LATAM Airlines logo]()
$1,517
This Ovago deal was found by Cheapflights users on 7/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/214:40 pm
STL
- AEP
2 stops24h 00m
LATAM Airlines
Sun 1/178:05 pm
AEP
- STL
2 stops24h 01m
LATAM Airlines
Deal found 7/8![LATAM Airlines logo]()
$1,747
Last-minute flights from St. Louis to ArgentinaDiscover last-minute flight deals from St. Louis to Argentina. Data last updated July 8, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Argentina. Data last updated July 8, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 7/4. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/82:57 pm
STL
- EZE
1 stop15h 03m
United Airlines
Sun 7/129:00 pm
EZE
- STL
1 stop22h 42m
United Airlines
Deal found 7/4![United Airlines logo]()
$1,208
This KAYAK deal was found by Cheapflights users on 7/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/163:58 pm
STL
- AEP
2 stops22h 02m
LATAM Airlines
Tue 10/205:35 pm
AEP
- STL
2 stops19h 16m
LATAM Airlines
Deal found 7/7![LATAM Airlines logo]()
$1,564
This United Airlines deal was found by Cheapflights users on 7/6. Clicking the “Pick Dates” 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 8/55:59 pm
STL
- EZE
2 stops36h 01m
United Airlines
Tue 8/119:00 pm
EZE
- STL
2 stops27h 00m
United Airlines
Deal found 7/6![United Airlines logo]()
$1,182
This Delta deal was found by Cheapflights users on 7/6. Clicking the “Pick Dates” 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 8/511:00 am
STL
- AEP
2 stops18h 40m
Delta
Tue 8/116:20 pm
AEP
- STL
2 stops19h 26m
Delta
Deal found 7/6![Delta logo]()
$1,373
This oojo deal was found by Cheapflights users on 7/6. Clicking the “Pick Dates” 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.
Thu 8/2011:00 am
STL
- EZE
2 stops20h 40m
LATAM Airlines
Thu 8/277:35 am
EZE
- STL
2 stops18h 23m
LATAM Airlines
Deal found 7/6![LATAM Airlines logo]()
$1,155
This American Airlines deal was found by Cheapflights users on 7/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2011:35 am
STL
- EZE
1 stop19h 10m
American Airlines
Thu 8/2710:30 pm
EZE
- STL
1 stop14h 09m
American Airlines
Deal found 7/7![American Airlines logo]()
$1,163
This United Airlines deal was found by Cheapflights users on 7/6. Clicking the “Pick Dates” 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 8/2011:15 am
STL
- EZE
1 stop18h 45m
United Airlines
Thu 8/279:00 pm
EZE
- STL
2 stops22h 06m
United Airlines
Deal found 7/6![United Airlines logo]()
$1,167
This Delta deal was found by Cheapflights users on 7/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2011:00 am
STL
- AEP
2 stops18h 40m
Delta
Thu 8/278:05 pm
AEP
- STL
2 stops20h 28m
Delta
Deal found 7/6![Delta logo]()
$1,178
This Mytrip deal was found by Cheapflights users on 7/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2012:10 pm
STL
- EZE
3 stops28h 11m
Multiple Airlines
Thu 8/279:45 am
EZE
- STL
3 stops30h 17m
Multiple Airlines
Deal found 7/7![Multiple Airlines logo]()
$1,429
This LATAM Airlines deal was found by Cheapflights users on 7/5. Clicking the “Pick Dates” 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 8/295:33 pm
STL
- AEP
2 stops20h 27m
LATAM Airlines
Sun 9/68:05 pm
AEP
- STL
2 stops17h 41m
LATAM Airlines
Deal found 7/5![LATAM Airlines logo]()
$1,188
This American Airlines deal was found by Cheapflights users on 7/5. Clicking the “Pick Dates” 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 8/2911:35 am
STL
- EZE
1 stop19h 10m
American Airlines
Sun 9/68:50 pm
EZE
- STL
1 stop15h 55m
American Airlines
Deal found 7/5![American Airlines logo]()
$1,193
This Mytrip deal was found by Cheapflights users on 7/5. Clicking the “Pick Dates” 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 8/298:55 am
STL
- EZE
3 stops34h 30m
Multiple Airlines
Sun 9/68:40 am
EZE
- STL
3 stops31h 22m
Multiple Airlines
Deal found 7/5![Multiple Airlines logo]()
$1,395
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 8, 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 8, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/138:08 pm
STL
- EZE
3 stops48h 19m
Multiple Airlines
Deal found 7/7![Multiple Airlines logo]()
$496
This Kiwi.com deal was found by Cheapflights users on 7/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/138:08 pm
STL
- AEP
3 stops55h 32m
Multiple Airlines
Deal found 7/7![Multiple Airlines logo]()
$612
This Justfly.com deal was found by Cheapflights users on 7/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/27:04 pm
STL
- AEP
2 stops31h 36m
Avianca
Deal found 7/7![Avianca logo]()
$751
This Avianca deal was found by Cheapflights users on 7/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/27:04 pm
STL
- EZE
2 stops17h 46m
Avianca
Deal found 7/7![Avianca logo]()
$759
This LATAM Airlines deal was found by Cheapflights users on 7/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/29:00 am
STL
- EZE
1 stop21h 40m
LATAM Airlines
Deal found 7/7![LATAM Airlines logo]()
$784
This Kiwi.com deal was found by Cheapflights users on 7/5. Clicking the “Pick Dates” 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 12/176:00 pm
STL
- EZE
2 stops39h 20m
GOL
Deal found 7/5![GOL logo]()
$817
This Delta deal was found by Cheapflights users on 7/5. Clicking the “Pick Dates” 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 12/227:20 am
STL
- AEP
2 stops28h 20m
Delta
Deal found 7/5![Delta logo]()
$834
This LATAM Airlines deal was found by Cheapflights users on 7/5. Clicking the “Pick Dates” 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 12/169:00 am
STL
- EZE
2 stops22h 55m
LATAM Airlines
Deal found 7/5![LATAM Airlines logo]()
$840
This Delta deal was found by Cheapflights users on 7/5. Clicking the “Pick Dates” 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 12/206:59 pm
STL
- EZE
2 stops35h 41m
Delta
Deal found 7/5![Delta logo]()
$862
This oojo deal was found by Cheapflights users on 7/5. Clicking the “Pick Dates” 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 12/199:00 am
STL
- EZE
2 stops21h 40m
LATAM Airlines
Deal found 7/5![LATAM Airlines logo]()
$867
This Delta deal was found by Cheapflights users on 7/5. Clicking the “Pick Dates” 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 12/166:00 am
STL
- AEP
2 stops22h 40m
Delta
Deal found 7/5![Delta logo]()
$878
This Delta deal was found by Cheapflights users on 7/5. Clicking the “Pick Dates” 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 12/1611:51 am
STL
- EZE
2 stops20h 04m
Delta
Deal found 7/5![Delta logo]()
$878
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 8, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,126 (oojo) |
One-way from | $496 (Kiwi.com) |
Popular in | May |
Cheapest in | October |
Average price | $1,473 |
Cheapflights Fare Finder
Customize your flight search to find flights from St. Louis to Argentina that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 8, 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
Wed 12/2
4:40 pm-4:00 pm
2 stops20h 20m
Buenos Aires Jorge Newbery
Thu 12/17
3:50 pm-8:12 am
2 stops19h 22m
$1,148
Quickest round-trip
St. LouisBuenos Aires
STL - EZE
STLEZE
Lambert-St Louis
Wed 12/2
11:00 am-7:20 am
1 stop17h 20m
Buenos Aires Ministro Pistarini
Thu 12/17
10:05 pm-9:42 am
1 stop14h 37m
$1,148
St. LouisBuenos Aires
STL - EZE
STLEZE
Lambert-St Louis
Wed 12/2
9:00 am-6:20 am
2 stops18h 20m
Buenos Aires Ministro Pistarini
Thu 12/17
7:20 am-12:36 am
2 stops20h 16m
$1,148
St. LouisBuenos Aires
STL - EZE
STLEZE
Lambert-St Louis
Thu 8/20
11:15 am-8:00 am
1 stop18h 45m
Buenos Aires Ministro Pistarini
Thu 8/27
9:00 pm-5:06 pm
2 stops22h 06m
$1,167
St. LouisBuenos Aires
STL - AEP
STLAEP
Lambert-St Louis
Wed 10/28
2:25 pm-8:00 pm
2 stops27h 35m
Buenos Aires Jorge Newbery
Sun 11/1
5:35 pm-5:06 pm
2 stops26h 31m
$1,178
St. LouisBuenos Aires
STL - AEP
STLAEP
Lambert-St Louis
Thu 8/20
11:00 am-7:40 am
2 stops18h 40m
Buenos Aires Jorge Newbery
Thu 8/27
8:05 pm-2:33 pm
2 stops20h 28m
$1,178
St. LouisBuenos Aires
STL - AEP
STLAEP
Lambert-St Louis
Mon 1/4
9:00 am-7:40 am
2 stops19h 40m
Buenos Aires Jorge Newbery
Sun 1/24
5:35 pm-10:48 am
2 stops20h 13m
$1,188
St. LouisBuenos Aires
STL - AEP
STLAEP
Lambert-St Louis
Sun 9/13
10:40 am-8:30 am
2 stops19h 50m
Buenos Aires Jorge Newbery
Thu 9/17
8:40 am-10:55 am
2 stops28h 15m
$1,238
St. LouisBuenos Aires
STL - AEP
STLAEP
Lambert-St Louis
Mon 1/4
9:00 am-7:40 am
2 stops19h 40m
Buenos Aires Jorge Newbery
Tue 1/12
5:35 pm-10:48 am
2 stops20h 13m
$1,333
St. LouisBuenos Aires
STL - AEP
STLAEP
Lambert-St Louis
Wed 8/5
11:00 am-7:40 am
2 stops18h 40m
Buenos Aires Jorge Newbery
Tue 8/11
6:20 pm-11:46 am
2 stops19h 26m
$1,373
Showing 1-10 of 25 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, October is the cheapest month in which you can book a flight from St. Louis to Argentina (average of $829). Flying from St. Louis to Argentina in August is currently the most expensive (average of $1,365). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
Reviews of airlines servicing Argentina
Get insights into the airlines that provide service to Argentina. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Argentina. Reviews last updated July 8, 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.
Entertainment
7.8
Comfort
7.8
Crew
8.5
Food
7.2
Overall
7.8
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Entertainment
7.8
Comfort
7.8
Crew
8.5
Food
7.2
Overall
7.8
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Entertainment
7.8
Comfort
7.8
Crew
8.5
Food
7.2
Overall
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 8, 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 8, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$884 | Average$1,139 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$1,025 | Average$1,396 | FlexibilityNo cancel fee | On-timeN/A |