$331+ Cheap flights from St. Louis (STL) to Argentina
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/1. Fares are subject to change and may not be available on all flights or dates of travel.
STL — EZE
Sep 4 — Sep 111
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 August 5, 2026.
Explore the most affordable flight options available from St. Louis to Argentina. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 5, 2026.
This Delta deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/210:00 am -
2 stops18h 40m
Thu 12/175:35 pm -
2 stops18h 18m
Deal found 8/4![Delta logo]()
$1,148
This Delta deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/27:05 am -
2 stops20h 15m
Thu 12/1711:35 pm -
1 stop19h 57m
Deal found 8/3![Delta logo]()
$1,148
This Delta deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/221:01 pm -
2 stops18h 39m
Mon 10/58:10 pm -
1 stop14h 59m
Deal found 8/1![Delta logo]()
$1,152
This American Airlines deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/172:11 pm -
1 stop16h 19m
Thu 9/248:45 pm -
1 stop18h 36m
Deal found 8/3![American Airlines logo]()
$1,188
This United Airlines deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/236:15 am -
1 stop22h 05m
Wed 12/3011:55 pm -
1 stop25h 24m
Deal found 8/1![United Airlines logo]()
$1,198
This United Airlines deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/226:50 pm -
2 stops33h 30m
Tue 12/2911:55 pm -
2 stops26h 38m
Deal found 8/1![United Airlines logo]()
$1,210
This FlightHub deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/210:00 am -
2 stops18h 40m
Thu 12/175:35 pm -
2 stops18h 18m
Deal found 8/2![LATAM Airlines logo]()
$1,213
This Expedia deal was found by Cheapflights users on 8/3. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/2410:47 am -
2 stops18h 53m
Sat 10/315:35 pm -
2 stops20h 16m
Deal found 8/3![LATAM Airlines logo]()
$1,221
This Expedia deal was found by Cheapflights users on 8/3. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/2412:00 pm -
2 stops16h 20m
Sat 10/315:00 pm -
2 stops20h 51m
Deal found 8/3![LATAM Airlines logo]()
$1,221
This Delta deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1110:00 am -
2 stops17h 20m
Tue 11/178:05 pm -
1 stop18h 43m
Deal found 8/3![Delta logo]()
$1,224
This Delta deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2011:00 am -
2 stops18h 40m
Wed 9/98:05 pm -
2 stops20h 03m
Deal found 8/1![Delta logo]()
$1,228
This Delta deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2011:00 am -
1 stop20h 45m
Wed 9/98:10 pm -
1 stop15h 24m
Deal found 8/1![Delta logo]()
$1,228
Best flights from St. Louis to ArgentinaDiscover carefully curated flight deals from St. Louis to Argentina that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 5, 2026.
Discover carefully curated flight deals from St. Louis to Argentina that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 5, 2026.
This Delta deal was found by Cheapflights users on 7/31. 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 1/273:40 pm -
2 stops21h 20m
Wed 2/35:35 pm -
2 stops24h 08m
Deal found 7/31![Delta logo]()
$1,148
This LATAM Airlines deal was found by Cheapflights users on 8/5. 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 12/212:20 pm -
1 stop16h 15m
Thu 12/175:00 pm -
2 stops18h 53m
Deal found 8/5![LATAM Airlines logo]()
$1,148
This United Airlines deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/247:22 am -
2 stops22h 58m
Mon 12/2811:55 pm -
2 stops24h 23m
Deal found 8/1![United Airlines logo]()
$1,232
This Delta deal was found by Cheapflights users on 7/31. 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 9/2112:00 pm -
2 stops17h 40m
Mon 10/58:05 pm -
2 stops16h 46m
Deal found 7/31![Delta logo]()
$1,148
This Expedia deal was found by Cheapflights users on 8/3. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/2410:47 am -
2 stops18h 53m
Sat 10/315:35 pm -
2 stops20h 16m
Deal found 8/3![LATAM Airlines logo]()
$1,221
This Delta deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/210:00 am -
2 stops18h 40m
Thu 12/175:35 pm -
2 stops18h 18m
Deal found 8/1![Delta logo]()
$1,148
This LATAM Airlines deal was found by Cheapflights users on 8/3. 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 LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/176:54 pm -
2 stops21h 36m
Thu 9/242:55 pm -
2 stops20h 05m
Deal found 8/3![LATAM Airlines logo]()
$1,228
This Delta deal was found by Cheapflights users on 7/31. 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 9/212:30 pm -
2 stops17h 10m
Sun 10/43:55 am -
2 stops21h 47m
Deal found 7/31![Delta logo]()
$1,148
This FlightHub deal was found by Cheapflights users on 8/4. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1012:20 pm -
2 stops18h 20m
Sat 12/197:20 am -
2 stops30h 28m
Deal found 8/4![LATAM Airlines logo]()
$1,258
This Delta deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/27:05 am -
2 stops20h 15m
Thu 12/1711:35 pm -
1 stop19h 57m
Deal found 8/3![Delta logo]()
$1,148
This Delta deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/221:01 pm -
2 stops18h 39m
Mon 10/58:10 pm -
1 stop14h 59m
Deal found 8/1![Delta logo]()
$1,152
This Delta deal was found by Cheapflights users on 7/31. 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 1/273:40 pm -
2 stops21h 20m
Sat 2/65:35 pm -
2 stops20h 13m
Deal found 7/31![Delta logo]()
$1,188
This Delta deal was found by Cheapflights users on 7/31. 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 1/271:01 pm -
1 stop18h 54m
Fri 2/59:30 pm -
1 stop13h 42m
Deal found 7/31![Delta logo]()
$1,188
This Delta deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1110:00 am -
2 stops17h 20m
Tue 11/178:05 pm -
1 stop18h 43m
Deal found 8/3![Delta logo]()
$1,224
This Delta deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1110:00 am -
2 stops18h 40m
Tue 11/175:35 pm -
2 stops18h 18m
Deal found 8/3![Delta logo]()
$1,228
This Delta deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2411:51 am -
2 stops25h 09m
Mon 12/285:35 pm -
2 stops20h 13m
Deal found 8/1![Delta logo]()
$1,452
Last-minute flights from St. Louis to ArgentinaDiscover last-minute flight deals from St. Louis to Argentina. Data last updated August 5, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Argentina. Data last updated August 5, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2011:00 am -
2 stops18h 40m
Wed 9/98:05 pm -
2 stops20h 03m
Deal found 8/1![Delta logo]()
$1,228
This Delta deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2011:00 am -
1 stop20h 45m
Wed 9/98:10 pm -
1 stop15h 24m
Deal found 8/1![Delta logo]()
$1,228
This United Airlines deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/208:00 am -
2 stops22h 00m
Wed 9/99:00 pm -
2 stops19h 15m
Deal found 8/1![United Airlines logo]()
$1,232
This Mytrip deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/202:40 pm -
3 stops34h 05m
Wed 9/94:45 am -
2 stops35h 15m
Deal found 8/1![Multiple Airlines logo]()
$1,377
This American Airlines deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/172:11 pm -
1 stop16h 19m
Thu 9/248:45 pm -
1 stop18h 36m
Deal found 8/3![American Airlines logo]()
$1,188
This LATAM Airlines deal was found by Cheapflights users on 7/31. 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 9/202:30 pm -
2 stops21h 30m
Sat 9/265:35 pm -
2 stops19h 20m
Deal found 7/31![LATAM Airlines logo]()
$1,288
This Delta deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/206:54 pm -
1 stop12h 51m
Sat 9/263:35 pm -
2 stops19h 25m
Deal found 8/2![Delta logo]()
$1,298
This Delta deal was found by Cheapflights users on 7/31. 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 9/2112:00 pm -
2 stops17h 40m
Mon 10/58:05 pm -
2 stops16h 46m
Deal found 7/31![Delta logo]()
$1,148
This Delta deal was found by Cheapflights users on 7/31. 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 9/212:30 pm -
2 stops17h 10m
Sun 10/43:55 am -
2 stops21h 47m
Deal found 7/31![Delta logo]()
$1,148
This Mytrip deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/212:40 pm -
3 stops32h 40m
Mon 10/57:35 am -
3 stops32h 25m
Deal found 7/31![Multiple Airlines logo]()
$1,302
This American Airlines deal was found by Cheapflights users on 7/31. 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.
Mon 9/212:11 pm -
1 stop16h 19m
Mon 10/510:20 pm -
1 stop21h 29m
Deal found 7/31![American Airlines logo]()
$1,368
This Delta deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2210:00 am -
2 stops21h 40m
Mon 10/54:45 pm -
2 stops20h 06m
Deal found 8/1![Delta logo]()
$1,152
One-way flights from St. Louis to ArgentinaSearch for one-way flight options from St. Louis to Argentina. Find affordable one-way fares based on user searches. Data last updated August 5, 2026.
Search for one-way flight options from St. Louis to Argentina. Find affordable one-way fares based on user searches. Data last updated August 5, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/110:35 am -
3 stops37h 48m
Deal found 8/3![Multiple Airlines logo]()
$331
This Kiwi.com deal was found by Cheapflights users on 8/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/110:35 am -
3 stops42h 55m
Deal found 8/3![Multiple Airlines logo]()
$357
This Kiwi.com deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/15:27 pm -
3 stops35h 18m
Deal found 8/1![Multiple Airlines logo]()
$406
This Kiwi.com deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/15:27 pm -
3 stops37h 03m
Deal found 8/1![Multiple Airlines logo]()
$455
This Justfly.com deal was found by Cheapflights users on 7/31. 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 -
2 stops31h 36m
Deal found 7/31![Avianca logo]()
$756
This Avianca deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/27:04 pm -
2 stops17h 46m
Deal found 7/31![Avianca logo]()
$764
This LATAM Airlines deal was found by Cheapflights users on 7/31. 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 12/212:20 pm -
1 stop16h 15m
Deal found 7/31![Multiple Airlines logo]()
$809
This Air Canada deal was found by Cheapflights users on 8/4. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/29:40 am -
3 stops50h 25m
Deal found 8/4![Air Canada logo]()
$1,758
This United Airlines deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/27:33 am -
3 stops20h 47m
Deal found 8/1![United Airlines logo]()
$2,068
Find flight deals from St. Louis to Argentina
Keep the following information in mind while searching for St. Louis to Argentina flight deals. Data was last updated August 5, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,133 (Expedia) |
One-way from | $331 (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 August 5, 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 1/27
3:40 pm-4:00 pm
2 stops21h 20m
Buenos Aires Jorge Newbery
Wed 2/3
5:35 pm-2:43 pm
2 stops24h 08m
$1,148
St. LouisBuenos Aires
STL - EZE
STLEZE
Lambert-St Louis
Wed 12/2
12:20 pm-7:35 am
1 stop16h 15m
Buenos Aires Ministro Pistarini
Thu 12/17
5:00 pm-8:53 am
2 stops18h 53m
$1,148
St. LouisBuenos Aires
STL - AEP
STLAEP
Lambert-St Louis
Mon 9/21
12:00 pm-7:40 am
2 stops17h 40m
Buenos Aires Jorge Newbery
Mon 10/5
8:05 pm-10:51 am
2 stops16h 46m
$1,148
St. LouisBuenos Aires
STL - AEP
STLAEP
Lambert-St Louis
Wed 12/2
10:00 am-7:40 am
2 stops18h 40m
Buenos Aires Jorge Newbery
Thu 12/17
5:35 pm-8:53 am
2 stops18h 18m
$1,148
St. LouisBuenos Aires
STL - EZE
STLEZE
Lambert-St Louis
Mon 9/21
2:30 pm-9:40 am
2 stops17h 10m
Buenos Aires Ministro Pistarini
Sun 10/4
3:55 am-11:42 pm
2 stops21h 47m
$1,148
St. LouisBuenos Aires
STL - EZE
STLEZE
Lambert-St Louis
Wed 12/2
7:05 am-6:20 am
2 stops20h 15m
Buenos Aires Ministro Pistarini
Thu 12/17
11:35 pm-4:32 pm
1 stop19h 57m
$1,148
St. LouisBuenos Aires
STL - EZE
STLEZE
Lambert-St Louis
Tue 9/22
1:01 pm-9:40 am
2 stops18h 39m
Buenos Aires Ministro Pistarini
Mon 10/5
8:10 pm-9:09 am
1 stop14h 59m
$1,152
St. LouisBuenos Aires
STL - AEP
STLAEP
Lambert-St Louis
Wed 1/27
3:40 pm-4:00 pm
2 stops21h 20m
Buenos Aires Jorge Newbery
Sat 2/6
5:35 pm-10:48 am
2 stops20h 13m
$1,188
Quickest round-trip
St. LouisBuenos Aires
STL - EZE
STLEZE
Lambert-St Louis
Wed 1/27
1:01 pm-10:55 am
1 stop18h 54m
Buenos Aires Ministro Pistarini
Fri 2/5
9:30 pm-8:12 am
1 stop13h 42m
$1,188
St. LouisBuenos Aires
STL - AEP
STLAEP
Lambert-St Louis
Sat 10/24
10:47 am-7:40 am
2 stops18h 53m
Buenos Aires Jorge Newbery
Sat 10/31
5:35 pm-11:51 am
2 stops20h 16m
$1,221
Showing 1-10 of 26 resultsSorted by cheapest first
Best time to book a flight from St. Louis to Argentina
Have a flexible travel schedule? Discover the best time to fly to Argentina from St. Louis with our price prediction graph.
STL-AEP
STL-EZE
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from St. Louis to Argentina
STL-AR0
STL-AEP
STL-EZE
No data available for this route at this time. Please check back soon.
Reviews of airlines servicing Argentina
Get insights into the airlines that provide service to Argentina. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Argentina. Reviews last updated August 5, 2026.
Get a feel of what it's like to fly with Delta,LATAM Airlines, andAmerican Airlines from St. Louis to Argentina by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
7.8
Food
7.2
Crew
8.5
Boarding
8.1
Overall
7.8
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Food
7.2
Crew
8.5
Boarding
8.1
Overall
7.8
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Food
7.2
Crew
8.5
Boarding
8.1
Overall
7.8
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Food
7.2
Crew
8.5
Boarding
8.1
Overall
7.8
Entertainment
7.8
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
Complete your trip to Argentina by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from St. Louis to Argentina by cabin class
Find flights from St. Louis to Argentina, based on your preferred cabin class, be it economy, premium economy, business, or first class.
St. Louis and Argentina flights
Browse other St. Louis and Argentina flight options. Last updated on August 5, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 3 airlines flying from St. Louis to Argentina
Discover the top 3 airlines that operate flights from St. Louis to Argentina. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 5, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$884 | Average$1,173 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$1,025 | Average$1,414 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$1,147 | Average$1,327 | FlexibilityNo cancel fee | On-time71% |