$764+ 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 9/12. Fares are subject to change and may not be available on all flights or dates of travel.
STL — EZE
Jul 11 — Jul 181
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from St. Louis to Argentina with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from St. Louis to Argentina
Cheapest
Best
Last-minute
One-way
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 June 11, 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 June 11, 2026.
This Kissandfly.com deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/166:14 am
STL
- EZE
1 stop23h 46m
Lufthansa
Thu 7/309:00 pm
EZE
- STL
1 stop15h 07m
Lufthansa
Deal found 6/10![Lufthansa logo]()
$1,170
This Delta deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/1610:51 am
STL
- EZE
2 stops20h 49m
Delta
Thu 7/308:10 pm
EZE
- STL
1 stop28h 05m
Delta
Deal found 6/10![Delta logo]()
$1,171
This KAYAK deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/98:35 am
STL
- EZE
1 stop21h 25m
Multiple Airlines
Thu 7/169:00 pm
EZE
- STL
1 stop15h 07m
Multiple Airlines
Deal found 6/9![Multiple Airlines logo]()
$1,177
This Delta deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/105:30 pm
STL
- EZE
1 stop14h 15m
Delta
Mon 9/143:35 pm
EZE
- STL
2 stops19h 20m
Delta
Deal found 6/10![Delta logo]()
$1,178
This KAYAK deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/96:00 am
STL
- EZE
2 stops24h 00m
Avianca
Thu 7/169:00 pm
EZE
- STL
1 stop15h 07m
Avianca
Deal found 6/9![Avianca logo]()
$1,181
This American Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/2111:00 am
STL
- EZE
1 stop19h 50m
American Airlines
Sun 7/2610:00 pm
EZE
- STL
1 stop25h 48m
American Airlines
Deal found 6/10![American Airlines logo]()
$1,186
This KAYAK deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/1511:51 am
STL
- EZE
2 stops19h 49m
LATAM Airlines
Fri 10/233:55 am
EZE
- STL
2 stops21h 44m
LATAM Airlines
Deal found 6/9![LATAM Airlines logo]()
$1,192
This KAYAK deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/134:21 pm
STL
- EZE
2 stops16h 59m
GOL
Thu 11/193:15 am
EZE
- STL
2 stops22h 17m
GOL
Deal found 6/8![GOL logo]()
$1,196
This LATAM Airlines deal was found by Cheapflights users on 6/7. 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.
Tue 12/1511:51 am
STL
- EZE
2 stops20h 39m
LATAM Airlines
Wed 1/137:45 am
EZE
- STL
2 stops18h 54m
LATAM Airlines
Deal found 6/7![LATAM Airlines logo]()
$1,198
This United Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/99:20 am
STL
- EZE
2 stops20h 40m
United Airlines
Thu 7/169:00 pm
EZE
- STL
2 stops37h 39m
United Airlines
Deal found 6/9![United Airlines logo]()
$1,200
This Delta deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/149:00 am
STL
- EZE
2 stops21h 40m
Delta
Wed 1/137:45 am
EZE
- STL
2 stops18h 54m
Delta
Deal found 6/10![Delta logo]()
$1,202
This Expedia deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/101:30 pm
STL
- AEP
2 stops27h 00m
LATAM Airlines
Mon 9/148:05 pm
AEP
- STL
2 stops29h 31m
LATAM Airlines
Deal found 6/10![LATAM Airlines logo]()
$1,209
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 June 11, 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 June 11, 2026.
This Delta deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/1610:51 am
STL
- EZE
2 stops20h 49m
Delta
Thu 7/308:10 pm
EZE
- STL
1 stop28h 05m
Delta
Deal found 6/10![Delta logo]()
$1,171
This LATAM Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/105:30 pm
STL
- EZE
1 stop14h 15m
LATAM Airlines
Mon 9/148:10 pm
EZE
- STL
1 stop16h 45m
LATAM Airlines
Deal found 6/10![LATAM Airlines logo]()
$1,178
This American Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/2111:00 am
STL
- EZE
1 stop19h 50m
American Airlines
Sun 7/2610:00 pm
EZE
- STL
1 stop25h 48m
American Airlines
Deal found 6/10![American Airlines logo]()
$1,186
This United Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/99:20 am
STL
- EZE
2 stops20h 40m
United Airlines
Thu 7/169:00 pm
EZE
- STL
2 stops37h 39m
United Airlines
Deal found 6/9![United Airlines logo]()
$1,200
This Mytrip deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1012:10 pm
STL
- AEP
3 stops29h 30m
Multiple Airlines
Mon 9/147:00 am
AEP
- STL
3 stops33h 00m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$1,685
This Delta deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/105:30 pm
STL
- EZE
1 stop14h 15m
Delta
Mon 9/143:35 pm
EZE
- STL
2 stops19h 20m
Delta
Deal found 6/10![Delta logo]()
$1,178
This KAYAK deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/1511:51 am
STL
- EZE
2 stops19h 49m
LATAM Airlines
Fri 10/233:55 am
EZE
- STL
2 stops21h 44m
LATAM Airlines
Deal found 6/9![LATAM Airlines logo]()
$1,192
This United Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/216:00 am
STL
- EZE
2 stops24h 00m
United Airlines
Sun 7/269:00 pm
EZE
- STL
2 stops37h 39m
United Airlines
Deal found 6/10![United Airlines logo]()
$1,212
This Expedia deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/101:30 pm
STL
- AEP
2 stops27h 00m
LATAM Airlines
Mon 9/148:05 pm
AEP
- STL
2 stops29h 31m
LATAM Airlines
Deal found 6/10![LATAM Airlines logo]()
$1,209
This United Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/246:14 am
STL
- EZE
1 stop23h 46m
United Airlines
Fri 7/319:00 pm
EZE
- STL
1 stop15h 07m
United Airlines
Deal found 6/9![United Airlines logo]()
$1,233
This LATAM Airlines deal was found by Cheapflights users on 6/6. 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.
Sun 7/57:12 pm
STL
- AEP
2 stops18h 48m
LATAM Airlines
Sun 7/128:05 pm
AEP
- STL
2 stops18h 12m
LATAM Airlines
Deal found 6/6![LATAM Airlines logo]()
$1,338
This United Airlines deal was found by Cheapflights users on 6/6. 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.
Sun 7/57:05 pm
STL
- EZE
2 stops34h 55m
United Airlines
Sun 7/129:00 pm
EZE
- STL
2 stops24h 23m
United Airlines
Deal found 6/6![United Airlines logo]()
$1,342
This Mytrip deal was found by Cheapflights users on 6/6. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/58:55 am
STL
- AEP
2 stops30h 25m
Multiple Airlines
Sun 7/128:05 pm
AEP
- STL
3 stops43h 57m
Multiple Airlines
Deal found 6/6![Multiple Airlines logo]()
$1,758
This KAYAK deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/93:58 pm
STL
- AEP
2 stops22h 02m
LATAM Airlines
Thu 7/162:55 pm
AEP
- STL
2 stops23h 22m
LATAM Airlines
Deal found 6/9![LATAM Airlines logo]()
$1,338
This LATAM Airlines deal was found by Cheapflights users on 6/6. 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.
Thu 12/311:51 am
STL
- AEP
2 stops18h 49m
LATAM Airlines
Mon 12/711:45 am
AEP
- STL
2 stops32h 21m
LATAM Airlines
Deal found 6/6![LATAM Airlines logo]()
$1,344
This Justfly.com deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/1511:51 am
STL
- AEP
2 stops17h 49m
LATAM Airlines
Sat 10/248:05 pm
AEP
- STL
2 stops16h 43m
LATAM Airlines
Deal found 6/9![LATAM Airlines logo]()
$1,437
This KAYAK deal was found by Cheapflights users on 6/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/110:51 am
STL
- AEP
2 stops19h 39m
LATAM Airlines
Wed 7/158:05 pm
AEP
- STL
2 stops18h 12m
LATAM Airlines
Deal found 6/8![LATAM Airlines logo]()
$1,458
This LATAM Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/216:58 pm
STL
- AEP
2 stops19h 02m
LATAM Airlines
Sun 7/268:05 pm
AEP
- STL
2 stops18h 12m
LATAM Airlines
Deal found 6/10![LATAM Airlines logo]()
$1,928
Last-minute flights from St. Louis to ArgentinaDiscover last-minute flight deals from St. Louis to Argentina. Data last updated June 11, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Argentina. Data last updated June 11, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/206:14 am
STL
- EZE
1 stop23h 46m
United Airlines
Wed 6/249:00 pm
EZE
- STL
1 stop15h 07m
United Airlines
Deal found 6/10![United Airlines logo]()
$1,208
This LATAM Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/205:24 pm
STL
- EZE
1 stop14h 21m
LATAM Airlines
Wed 6/247:35 am
EZE
- STL
3 stops30h 59m
LATAM Airlines
Deal found 6/10![LATAM Airlines logo]()
$1,211
This LATAM Airlines deal was found by Cheapflights users on 6/6. 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.
Sun 7/57:12 pm
STL
- AEP
2 stops18h 48m
LATAM Airlines
Sun 7/125:35 pm
AEP
- STL
2 stops26h 18m
LATAM Airlines
Deal found 6/6![LATAM Airlines logo]()
$1,338
This KAYAK deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/98:35 am
STL
- EZE
1 stop21h 25m
Multiple Airlines
Thu 7/169:00 pm
EZE
- STL
1 stop15h 07m
Multiple Airlines
Deal found 6/9![Multiple Airlines logo]()
$1,177
This KAYAK deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/96:00 am
STL
- EZE
2 stops24h 00m
Avianca
Thu 7/169:00 pm
EZE
- STL
1 stop15h 07m
Avianca
Deal found 6/9![Avianca logo]()
$1,181
This United Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/99:20 am
STL
- EZE
2 stops20h 40m
United Airlines
Thu 7/169:00 pm
EZE
- STL
2 stops37h 39m
United Airlines
Deal found 6/9![United Airlines logo]()
$1,200
This Kissandfly.com deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/166:14 am
STL
- EZE
1 stop23h 46m
Lufthansa
Thu 7/309:00 pm
EZE
- STL
1 stop15h 07m
Lufthansa
Deal found 6/10![Lufthansa logo]()
$1,170
This Delta deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/1610:51 am
STL
- EZE
2 stops20h 49m
Delta
Thu 7/308:10 pm
EZE
- STL
1 stop28h 05m
Delta
Deal found 6/10![Delta logo]()
$1,171
This Expedia deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/163:58 pm
STL
- EZE
2 stops15h 42m
LATAM Airlines
Thu 7/307:35 am
EZE
- STL
2 stops18h 18m
LATAM Airlines
Deal found 6/10![LATAM Airlines logo]()
$1,220
This American Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/2111:00 am
STL
- EZE
1 stop19h 50m
American Airlines
Sun 7/2610:00 pm
EZE
- STL
1 stop25h 48m
American Airlines
Deal found 6/10![American Airlines logo]()
$1,186
This United Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/216:00 am
STL
- EZE
2 stops24h 00m
United Airlines
Sun 7/269:00 pm
EZE
- STL
2 stops37h 39m
United Airlines
Deal found 6/10![United Airlines logo]()
$1,212
This United Airlines deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/246:14 am
STL
- EZE
1 stop23h 46m
United Airlines
Fri 7/319:00 pm
EZE
- STL
1 stop15h 07m
United Airlines
Deal found 6/9![United Airlines logo]()
$1,233
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 June 11, 2026.
Search for one-way flight options from St. Louis to Argentina. Find affordable one-way fares based on user searches. Data last updated June 11, 2026.
This Avianca deal was found by Cheapflights users on 6/7. 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.
Sat 9/126:53 pm
STL
- EZE
2 stops18h 47m
Avianca
Deal found 6/7![Avianca logo]()
$764
This Despegar deal was found by Cheapflights users on 6/7. 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 Despegar is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/127:05 pm
STL
- EZE
1 stop12h 40m
LATAM Airlines
Deal found 6/7![LATAM Airlines logo]()
$923
This Air Canada deal was found by Cheapflights users on 6/7. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1212:10 pm
STL
- EZE
3 stops48h 20m
Air Canada
Deal found 6/7![Air Canada logo]()
$1,344
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 June 11, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,170 (Kissandfly.com) |
One-way from | $764 (Avianca) |
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 June 11, 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 - EZE
STLEZE
Lambert-St Louis
Thu 7/16
10:51 am-9:40 am
2 stops20h 49m
Buenos Aires Ministro Pistarini
Thu 7/30
8:10 pm-10:15 pm
1 stop28h 05m
$1,171
Quickest round-trip
St. LouisBuenos Aires
STL - EZE
STLEZE
Lambert-St Louis
Thu 9/10
5:30 pm-9:45 am
1 stop14h 15m
Buenos Aires Ministro Pistarini
Mon 9/14
8:10 pm-10:55 am
1 stop16h 45m
$1,178
St. LouisBuenos Aires
STL - EZE
STLEZE
Lambert-St Louis
Thu 9/10
5:30 pm-9:45 am
1 stop14h 15m
Buenos Aires Ministro Pistarini
Mon 9/14
3:35 pm-8:55 am
2 stops19h 20m
$1,178
St. LouisBuenos Aires
STL - EZE
STLEZE
Lambert-St Louis
Tue 7/21
11:00 am-8:50 am
1 stop19h 50m
Buenos Aires Ministro Pistarini
Sun 7/26
10:00 pm-9:48 pm
1 stop25h 48m
$1,186
St. LouisBuenos Aires
STL - EZE
STLEZE
Lambert-St Louis
Thu 10/15
11:51 am-9:40 am
2 stops19h 49m
Buenos Aires Ministro Pistarini
Fri 10/23
3:55 am-11:39 pm
2 stops21h 44m
$1,192
St. LouisBuenos Aires
STL - EZE
STLEZE
Lambert-St Louis
Thu 7/9
9:20 am-8:00 am
2 stops20h 40m
Buenos Aires Ministro Pistarini
Thu 7/16
9:00 pm-8:39 am
2 stops37h 39m
$1,200
St. LouisBuenos Aires
STL - AEP
STLAEP
Lambert-St Louis
Thu 9/10
1:30 pm-6:30 pm
2 stops27h 00m
Buenos Aires Jorge Newbery
Mon 9/14
8:05 pm-11:36 pm
2 stops29h 31m
$1,209
St. LouisBuenos Aires
STL - EZE
STLEZE
Lambert-St Louis
Tue 7/21
6:00 am-8:00 am
2 stops24h 00m
Buenos Aires Ministro Pistarini
Sun 7/26
9:00 pm-8:39 am
2 stops37h 39m
$1,212
St. LouisBuenos Aires
STL - EZE
STLEZE
Lambert-St Louis
Fri 7/24
6:14 am-8:00 am
1 stop23h 46m
Buenos Aires Ministro Pistarini
Fri 7/31
9:00 pm-10:07 am
1 stop15h 07m
$1,233
St. LouisBuenos Aires
STL - AEP
STLAEP
Lambert-St Louis
Sun 7/5
7:12 pm-4:00 pm
2 stops18h 48m
Buenos Aires Jorge Newbery
Sun 7/12
8:05 pm-12:17 pm
2 stops18h 12m
$1,338
Showing 1-10 of 21 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 June 11, 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.
Overall
7.9
Crew
8.5
Entertainment
7.8
Food
7.2
Comfort
7.8
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Overall
7.9
Crew
8.5
Entertainment
7.8
Food
7.2
Comfort
7.8
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Overall
7.9
Crew
8.5
Entertainment
7.8
Food
7.2
Comfort
7.8
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Overall
7.9
Crew
8.5
Entertainment
7.8
Food
7.2
Comfort
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.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Popular flights
Alternative routes for St. Louis to Argentina
See prices for flight routes from nearby airports that may be better suited for you.
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 June 11, 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 June 11, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$884 | Average$1,109 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$1,025 | Average$1,396 | FlexibilityNo cancel fee | On-timeN/A |