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Cheap flights from St. Louis to Argentina from $384

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Argentina departing on 11/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Cheap round-trip flights

Delta Logo
3:59 pm - 2:55 pmSTL-EZE
19h 56m2 stops
Delta Logo
7:50 am - 9:58 pmEZE-STL
17h 08m2 stops
$1,019Delta
Find Deal
gio, nov 6 - mer, nov 19
Delta Logo
11:44 am - 9:00 amSTL-EZE
18h 16m1 stop
Delta Logo
8:55 pm - 1:56 pmEZE-STL
20h 01m1 stop
$1,025Delta
Find Deal
mar, nov 18 - mer, nov 26
LATAM Airlines Logo
7:05 am - 4:00 pmSTL-AEP
29h 55m2 stops
LATAM Airlines Logo
6:20 pm - 10:49 amAEP-STL
19h 29m2 stops
$1,064LATAM Airlines
Find Deal
gio, nov 6 - mer, nov 19
LATAM Airlines Logo
11:51 am - 7:55 amSTL-AEP
18h 04m2 stops
LATAM Airlines Logo
5:15 pm - 10:50 amAEP-STL
19h 35m2 stops
$1,065LATAM Airlines
Find Deal
dom, mar 8 - mar, mar 17
American Airlines Logo
2:08 pm - 9:00 amSTL-EZE
15h 52m2 stops
American Airlines Logo
11:20 pm - 1:17 pmEZE-STL
16h 57m2 stops
$1,073American Airlines
Find Deal
gio, nov 6 - mer, nov 19
Multiple Airlines Logo
7:15 pm - 5:00 amSTL-EZE
31h 45m3 stops
Multiple Airlines Logo
7:50 am - 11:01 amEZE-STL
30h 11m3 stops
$1,076Multiple Airlines
Find Deal
sab, nov 1 - sab, nov 8
Multiple Airlines Logo
10:17 am - 7:30 pmSTL-EZE
30h 13m1 stop
Multiple Airlines Logo
2:40 am - 11:01 amEZE-STL
35h 21m2 stops
$1,087Multiple Airlines
Find Deal
gio, nov 6 - mar, nov 18
United Airlines Logo
11:20 am - 6:20 amSTL-EZE
17h 00m1 stop
United Airlines Logo
11:55 pm - 10:39 amEZE-STL
13h 44m1 stop
$1,100United Airlines
Find Deal
gio, ott 30 - gio, nov 6
United Airlines Logo
11:20 am - 6:20 amSTL-EZE
17h 00m1 stop
United Airlines Logo
10:05 pm - 12:28 pmEZE-STL
17h 23m2 stops
$1,105United Airlines
Find Deal
gio, ott 30 - gio, nov 6
American Airlines Logo
12:23 pm - 8:20 amSTL-EZE
17h 57m1 stop
American Airlines Logo
10:25 pm - 12:37 pmEZE-STL
17h 12m1 stop
$1,140American Airlines
Find Deal
ven, ott 31 - mer, nov 12

Delta flights from St. Louis to Argentina

Our best Delta deals on St. Louis to Argentina flight tickets
Delta
Nov 6
STL3:59 pmLambert-St Louis
19h 56m
2 stops
EZE2:55 pmBuenos Aires Ministro Pistarini
Nov 19
EZE7:50 amBuenos Aires Ministro Pistarini
17h 08m
2 stops
STL9:58 pmLambert-St Louis
$1,019
Find similar
Delta
Nov 18
STL11:44 amLambert-St Louis
18h 16m
1 stop
EZE9:00 amBuenos Aires Ministro Pistarini
Nov 26
EZE8:55 pmBuenos Aires Ministro Pistarini
20h 01m
1 stop
STL1:56 pmLambert-St Louis
$1,025
Find similar
Delta
Mar 8
STL11:51 amLambert-St Louis
16h 14m
2 stops
EZE6:05 amBuenos Aires Ministro Pistarini
Mar 17
EZE8:55 pmBuenos Aires Ministro Pistarini
14h 09m
1 stop
STL9:04 amLambert-St Louis
$1,065
Find similar

American Airlines flights from St. Louis to Argentina

Our best American Airlines deals on St. Louis to Argentina flight tickets
American Airlines
Nov 6
STL2:08 pmLambert-St Louis
15h 52m
2 stops
EZE9:00 amBuenos Aires Ministro Pistarini
Nov 19
EZE11:20 pmBuenos Aires Ministro Pistarini
16h 57m
2 stops
STL1:17 pmLambert-St Louis
$1,073
Find similar
American Airlines
Oct 31
STL12:23 pmLambert-St Louis
17h 57m
1 stop
EZE8:20 amBuenos Aires Ministro Pistarini
Nov 12
EZE10:25 pmBuenos Aires Ministro Pistarini
17h 12m
1 stop
STL12:37 pmLambert-St Louis
$1,140
Find similar
American Airlines
Oct 31
STL10:36 amLambert-St Louis
18h 29m
2 stops
EZE7:05 amBuenos Aires Ministro Pistarini
Nov 12
EZE11:20 pmBuenos Aires Ministro Pistarini
16h 57m
2 stops
STL1:17 pmLambert-St Louis
$1,145
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated settembre 17, 2025.
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

Price

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

gio 11/6

3:59 pm-2:55 pm

2 stops19h 56m

Buenos Aires Ministro Pistarini

mer 11/19

7:50 am-9:58 pm

2 stops17h 08m

$1,019

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

mar 11/18

11:44 am-9:00 am

1 stop18h 16m

Buenos Aires Ministro Pistarini

mer 11/26

8:55 pm-1:56 pm

1 stop20h 01m

$1,025

St. LouisBuenos Aires

STL - AEP

STLAEP

Lambert-St Louis

gio 11/6

7:05 am-4:00 pm

2 stops29h 55m

Buenos Aires Jorge Newbery

mer 11/19

6:20 pm-10:49 am

2 stops19h 29m

$1,064

St. LouisBuenos Aires

STL - AEP

STLAEP

Lambert-St Louis

dom 3/8

11:51 am-7:55 am

2 stops18h 04m

Buenos Aires Jorge Newbery

mar 3/17

5:15 pm-10:50 am

2 stops19h 35m

$1,065

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

gio 11/6

2:08 pm-9:00 am

2 stops15h 52m

Buenos Aires Ministro Pistarini

mer 11/19

11:20 pm-1:17 pm

2 stops16h 57m

$1,073

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

sab 11/1

7:15 pm-5:00 am

3 stops31h 45m

Buenos Aires Ministro Pistarini

sab 11/8

7:50 am-11:01 am

3 stops30h 11m

$1,076

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

gio 11/6

10:17 am-7:30 pm

1 stop30h 13m

Buenos Aires Ministro Pistarini

mar 11/18

2:40 am-11:01 am

2 stops35h 21m

$1,087

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

gio 10/30

11:20 am-6:20 am

1 stop17h 00m

Buenos Aires Ministro Pistarini

gio 11/6

11:55 pm-10:39 am

1 stop13h 44m

$1,100

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

gio 10/30

11:20 am-6:20 am

1 stop17h 00m

Buenos Aires Ministro Pistarini

gio 11/6

10:05 pm-12:28 pm

2 stops17h 23m

$1,105

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

ven 10/31

12:23 pm-8:20 am

1 stop17h 57m

Buenos Aires Ministro Pistarini

mer 11/12

10:25 pm-12:37 pm

1 stop17h 12m

$1,140

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Argentina from

How to get the cheapest flight ticket from St. Louis to Argentina

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Argentina?

If you are unable to visit Argentina during the month of September, then departing from St. Louis during the month June is also very affordable. Most momondo users find prices during this month for around $1,177.

What is the cheapest day to depart on your flight to Argentina?

The cheapest day to depart from St. Louis to Argentina is on a Tuesday. Travelers who choose to depart for Argentina on a Tuesday will often find tickets for as low as $1,163. The most expensive day to fly to Argentina is Friday, with ticket prices averaging around $1,386.

What is the cheapest time of day to depart on your flight to Argentina?

The cheapest time of day to fly to Argentina is in the evening when flights can be purchased for as low as $1,153. Flights in the morning are often more expensive with an average ticket price of $1,368.

Can stopping save me money on St. Louis to Argentina flights?

You could potentially save up to 46% on your flight if you consider stops on a St. Louis to Argentina flight.

Cheap St. Louis to Argentina flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Argentina

Direct flights

None
There are no direct flights from St. Louis to Argentina. There are no popular flight routes from St. Louis to Argentina.
Search flight deals

  • When did momondo last update prices for flights from Lambert-St Louis Airport to Argentina?

    Prices for flights from Lambert-St Louis Airport to Argentina refresh daily.

  • How many operators does momondo search for flights from Lambert-St Louis Airport to Argentina?

  • How old do you have to be to fly from Lambert-St Louis Airport to Argentina?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Lambert-St Louis Airport to Argentina.

  • What documentation or ID do you need to fly to Argentina?

    The required travel and health documents for your Argentina trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Argentina. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from St. Louis to Argentina

Compare and see reviews for airlines that fly from St. Louis to Argentina with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $1,023Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $1,023Free CancellationRating
7.9
7,961 reviews
Search Delta flights
United AirlinesPriceFrom $1,053Free CancellationRating
7.4
8,926 reviews
Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Argentina?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Argentina from St. Louis.

Can I find flights from St. Louis to Argentina with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for St. Louis to Argentina flights to just show those with flexible booking policies.

How can momondo help me find flights from St. Louis to Argentina?

Once you have performed a search for St. Louis to Argentina flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from St. Louis to Argentina right now. Can momondo alert me if prices change?

Yes. momondo can track prices for St. Louis to Argentina flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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