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Cheap flights from St. Louis to Buenos Aires from $468

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 Buenos Aires departing on 8/27. 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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Find the cheapest flights from St. Louis to Buenos Aires

Cheap round-trip flights

 Logo
8:25 am - 6:05 amSTL-EZE
18h 40m2 stops
 Logo
1:45 am - 3:29 pmEZE-STL
16h 44m2 stops
$1,004
Find Deal
Tue, Nov 18 - Tue, Nov 25
LATAM Airlines Logo
4:55 pm - 4:00 pmSTL-AEP
20h 05m2 stops
LATAM Airlines Logo
5:15 pm - 10:05 amAEP-STL
19h 50m2 stops
$1,020LATAM Airlines
Find Deal
Tue, Nov 18 - Wed, Nov 26
LATAM Airlines Logo
9:00 am - 6:20 amSTL-EZE
18h 20m2 stops
LATAM Airlines Logo
7:55 am - 9:59 pmEZE-STL
17h 04m2 stops
$1,020LATAM Airlines
Find Deal
Tue, Nov 18 - Wed, Nov 26
United Airlines Logo
6:15 am - 9:20 amSTL-EZE
24h 05m1 stop
United Airlines Logo
10:05 pm - 6:47 pmEZE-STL
23h 42m1 stop
$1,025United Airlines
Find Deal
Tue, Nov 18 - Wed, Nov 26
United Airlines Logo
4:35 pm - 9:20 amSTL-EZE
13h 45m1 stop
United Airlines Logo
10:05 pm - 5:14 pmEZE-STL
22h 09m2 stops
$1,030United Airlines
Find Deal
Tue, Nov 18 - Wed, Nov 26
Delta Logo
10:20 am - 9:45 amSTL-EZE
21h 25m1 stop
Delta Logo
8:10 pm - 12:21 pmEZE-STL
18h 11m1 stop
$1,065Delta
Find Deal
Thu, Sep 4 - Fri, Sep 12
American Airlines Logo
7:15 am - 9:10 amSTL-EZE
22h 55m1 stop
American Airlines Logo
11:35 pm - 1:59 pmEZE-STL
17h 24m2 stops
$1,120American Airlines
Find Deal
Thu, Nov 20 - Tue, Dec 2
Delta Logo
4:00 pm - 9:00 amSTL-EZE
14h 00m1 stop
Delta Logo
8:55 pm - 9:41 amEZE-STL
15h 46m1 stop
$1,141Delta
Find Deal
Mon, Dec 8 - Fri, Dec 12
Air Canada Logo
10:30 am - 3:10 pmSTL-EZE
25h 40m3 stops
Air Canada Logo
4:45 pm - 3:29 pmEZE-STL
25h 44m2 stops
$1,406Air Canada
Find Deal
Tue, Nov 18 - Wed, Nov 26
Air Canada Logo
12:25 pm - 2:30 pmSTL-EZE
24h 05m3 stops
Air Canada Logo
4:45 pm - 3:29 pmEZE-STL
24h 44m2 stops
$1,453Air Canada
Find Deal
Wed, Oct 22 - Wed, Oct 29

Delta flights from St. Louis to Buenos Aires

Our best Delta deals on St. Louis to Buenos Aires flight tickets
Delta
Sep 4
STL10:20 amLambert-St Louis
21h 25m
1 stop
EZE9:45 amBuenos Aires Ministro Pistarini
Sep 12
EZE8:10 pmBuenos Aires Ministro Pistarini
18h 11m
1 stop
STL12:21 pmLambert-St Louis
Delta
Dec 8
STL4:00 pmLambert-St Louis
14h 00m
1 stop
EZE9:00 amBuenos Aires Ministro Pistarini
Dec 12
EZE8:55 pmBuenos Aires Ministro Pistarini
15h 46m
1 stop
STL9:41 amLambert-St Louis
Delta
Dec 8
STL11:51 amLambert-St Louis
18h 09m
1 stop
EZE9:00 amBuenos Aires Ministro Pistarini
Dec 12
EZE10:50 pmBuenos Aires Ministro Pistarini
17h 07m
1 stop
STL12:57 pmLambert-St Louis

LATAM Airlines flights from St. Louis to Buenos Aires

Our best LATAM Airlines deals on St. Louis to Buenos Aires flight tickets
LATAM Airlines
Nov 18
STL9:00 amLambert-St Louis
18h 20m
2 stops
EZE6:20 amBuenos Aires Ministro Pistarini
Nov 26
EZE7:55 amBuenos Aires Ministro Pistarini
17h 04m
2 stops
STL9:59 pmLambert-St Louis
LATAM Airlines
Sep 4
STL10:20 amLambert-St Louis
17h 50m
2 stops
EZE6:10 amBuenos Aires Ministro Pistarini
Sep 12
EZE7:30 amBuenos Aires Ministro Pistarini
17h 54m
2 stops
STL11:24 pmLambert-St Louis
LATAM Airlines
Sep 4
STL1:21 pmLambert-St Louis
23h 19m
2 stops
AEP2:40 pmBuenos Aires Jorge Newbery
Sep 12
AEP2:55 pmBuenos Aires Jorge Newbery
23h 26m
2 stops
STL12:21 pmLambert-St Louis

See travel insights to Buenos Aires from

How to get the cheapest flight ticket from St. Louis to Buenos Aires

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 Buenos Aires?

The cheapest month to fly to Buenos Aires from St. Louis is in June. Flight prices, which tend to average around $1,103, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of June, then book flights to Buenos Aires from St. Louis during September instead. Flights to Buenos Aires in September, while not as cheap as those in June, still average around $1,135.

What is the cheapest day to depart on your flight to Buenos Aires?

On average, the least expensive day to fly to Buenos Aires from St. Louis is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $1,163. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Friday as prices are generally higher than usual. According to our data, the average ticket price to Buenos Aires on Friday is $1,386.

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

Our most recent data shows that the best time of day to fly to Buenos Aires is in the evening. Flights from St. Louis to Buenos Aires during this time can be as low as $1,153. Try not to purchase tickets in the morning because they tend to be around $1,368. Of course, these prices can vary depending on the time of year and what airport you fly to.

When to book flights from St. Louis to Buenos Aires

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to Buenos Aires according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap St. Louis to Buenos Aires (STL to BUE) flight deals and tips

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

Best Price Found

$468

Fastest flight time

13h 45m

Direct flights

None

Airports in Buenos Aires

2 airports
The best one-way flight to Buenos Aires from St. Louis in the past 72 hours is $468. The best round-trip flight deal from St. Louis to Buenos Aires found on momondo in the last 72 hours is $1,004.
The fastest flight from St. Louis to Buenos Aires takes 13h 45m
There are no direct flights from St. Louis to Buenos Aires. Popular non-direct routes for this connection are Lambert-St Louis Airport - Buenos Aires Ministro Pistarini Airport and Lambert-St Louis Airport - Buenos Aires Jorge Newbery Airport.
There are 2 airports near Buenos Aires: Buenos Aires Ministro Pistarini (EZE), Buenos Aires Jorge Newbery (AEP)

  • How far is Lambert-St Louis to Buenos Aires by plane?

    The straight-line distance from Lambert-St Louis to Buenos Aires is 5450.9 mi. Typically, this will take 13h 45m by plane in normal conditions.

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

    Prices for flights from Lambert-St Louis Airport to Buenos Aires are refreshed on a daily basis.

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

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

    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 Buenos Aires.

  • What documentation or ID do you need to fly to Buenos Aires?

    The travel and health documents required for your trip to Buenos Aires can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Buenos Aires. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from St. Louis to Buenos Aires?


Best airlines flying from St. Louis to Buenos Aires

Compare and see reviews for airlines that fly from St. Louis to Buenos Aires with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $1,023Free CancellationRating
8.0
7,983 reviews
Search Delta flights
American AirlinesPriceFrom $1,025Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $1,053Free CancellationRating
7.4
8,861 reviews
Search United Airlines flights

Why use momondo?

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

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 Buenos Aires from St. Louis.

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

Yes. All flights to Buenos Aires from St. Louis on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Buenos Aires from St. Louis.

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

Yes momondo offers price alerts on flights to Buenos Aires from St. Louis. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.


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1 adult
Tue 7/8
Tue 7/15

Find better results for your trip to Argentina

Fly into one of these airports located in Buenos Aires

Airports listed have a maximum distance of 17.0 mi from Buenos Aires