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Cheap flights from St. Louis to Buenos Aires from $757

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 12/28. 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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Find the cheapest flights from St. Louis to Buenos Aires

Cheap round-trip flights

These are some of the best round-trip flight deals from St. Louis to Buenos Aires that have been recently found on momondo from popular airlines, departing in the coming months.

Cheap one-way flights

Flying one-way? These are some of the best deals recently discovered on momondo for flights from St. Louis to Buenos Aires.

Cheap last minute flights

Planning a quick getaway from St. Louis to Buenos Aires? These are the last-minute flight deals available now.

Cheap direct flights

If you prefer a non-stop journey, check out our latest direct flight deals to Buenos Aires, so you can enjoy a seamless trip without layovers.

Cheap bus & train deals from St. Louis to Buenos Aires

Find recent round-trip train or bus tickets from St. Louis to Buenos Aires.

All round-trip flight deals to Buenos Aires

The cheapest plane tickets to Buenos Aires found on KAYAK recently.
4:44 pm - 10:49 amSTL-EZE
15h 05m1 stop
10:30 pm - 1:00 pmEZE-STL
17h 30m1 stop
$1,064American Airlines
Find Deal
Tue, Jan 21 - Fri, Jan 31
1:40 pm - 10:49 amSTL-EZE
18h 09m2 stops
10:30 pm - 2:07 pmEZE-STL
18h 37m2 stops
$1,068American Airlines
Find Deal
Tue, Jan 21 - Fri, Jan 31
4:30 pm - 7:20 amSTL-EZE
35h 50m1 stop
11:55 pm - 2:36 pmEZE-STL
17h 41m2 stops
$1,077United Airlines
Find Deal
Sun, Feb 16 - Sun, Feb 23
5:36 pm - 7:20 amSTL-EZE
58h 44m2 stops
11:55 pm - 8:44 pmEZE-STL
23h 49m1 stop
$1,085United Airlines
Find Deal
Sat, Feb 15 - Sat, Feb 22
4:35 pm - 6:30 pmSTL-AEP
22h 55m2 stops
10:55 pm - 11:38 pmAEP-STL
27h 43m2 stops
$1,119LATAM Airlines
Find Deal
Wed, Feb 19 - Sun, Mar 2
4:35 pm - 2:40 pmSTL-AEP
19h 05m2 stops
5:05 pm - 9:22 amAEP-STL
19h 17m2 stops
$1,120LATAM Airlines
Find Deal
Mon, Feb 17 - Fri, Feb 21
4:35 pm - 2:45 amSTL-EZE
31h 10m2 stops
7:45 am - 9:22 amEZE-STL
28h 37m2 stops
$1,124Delta
Find Deal
Sun, Feb 16 - Sun, Feb 23
4:35 pm - 2:45 amSTL-EZE
31h 10m2 stops
10:25 pm - 9:06 pmEZE-STL
25h 41m1 stop
$1,212Delta
Find Deal
Sat, Feb 15 - Sun, Feb 23
5:00 pm - 7:00 amSTL-EZE
35h 00m3 stops
8:00 am - 3:21 pmEZE-STL
34h 21m3 stops
$1,290
Find Deal
Fri, Dec 6 - Mon, Dec 9
7:57 am - 12:20 pmSTL-EZE
25h 23m3 stops
3:40 pm - 7:07 amEZE-STL
42h 27m3 stops
$1,325
Find Deal
Thu, Feb 13 - Sat, Feb 22
6:00 am - 6:00 amSTL-EZE
21h 00m2 stops
$757Delta
Find Deal
Sat, Dec 28
5:00 am - 10:25 pmSTL-EZE
38h 25m3 stops
$1,900
Find Deal
Sat, Dec 28
11:51 am - 10:30 amSTL-EZE
19h 39m1 stop
10:30 pm - 4:37 pmEZE-STL
21h 07m1 stop
$1,544American Airlines
Find Deal
Fri, Nov 22 - Sun, Nov 24
10:10 am - 6:05 amSTL-EZE
16h 55m2 stops
1:45 am - 3:39 pmEZE-STL
16h 54m2 stops
$1,547
Find Deal
Fri, Nov 22 - Sat, Nov 23
2:17 pm - 10:40 amSTL-EZE
17h 23m2 stops
9:35 pm - 1:27 pmEZE-STL
18h 52m2 stops
$1,548American Airlines
Find Deal
Fri, Nov 22 - Sun, Nov 24
5:34 pm - 2:45 amSTL-EZE
30h 11m2 stops
5:00 pm - 3:39 pmEZE-STL
25h 39m3 stops
$2,240
Find Deal
Fri, Nov 22 - Sun, Nov 24

United Airlines flights from St. Louis to Buenos Aires

Our best United Airlines deals on St. Louis to Buenos Aires flight tickets
United Airlines
Feb 16
STL4:30 pmLambert-St Louis
35h 50m
1 stop
EZE7:20 amBuenos Aires Ministro Pistarini
Feb 23
EZE11:55 pmBuenos Aires Ministro Pistarini
17h 41m
2 stops
STL2:36 pmLambert-St Louis
United Airlines
Feb 15
STL5:36 pmLambert-St Louis
58h 44m
2 stops
EZE7:20 amBuenos Aires Ministro Pistarini
Feb 22
EZE11:55 pmBuenos Aires Ministro Pistarini
23h 49m
1 stop
STL8:44 pmLambert-St Louis
United Airlines
Feb 6
STL6:15 amLambert-St Louis
22h 05m
1 stop
EZE7:20 amBuenos Aires Ministro Pistarini
Feb 20
EZE10:05 pmBuenos Aires Ministro Pistarini
14h 46m
1 stop
STL9:51 amLambert-St Louis

American Airlines flights from St. Louis to Buenos Aires

Our best American Airlines deals on St. Louis to Buenos Aires flight tickets
American Airlines
Jan 21
STL4:44 pmLambert-St Louis
15h 05m
1 stop
EZE10:49 amBuenos Aires Ministro Pistarini
Jan 31
EZE10:30 pmBuenos Aires Ministro Pistarini
17h 30m
1 stop
STL1:00 pmLambert-St Louis
American Airlines
Jan 21
STL1:40 pmLambert-St Louis
18h 09m
2 stops
EZE10:49 amBuenos Aires Ministro Pistarini
Jan 31
EZE10:30 pmBuenos Aires Ministro Pistarini
18h 37m
2 stops
STL2:07 pmLambert-St Louis
American Airlines
Dec 16
STL11:00 amLambert-St Louis
17h 00m
2 stops
EZE7:00 amBuenos Aires Ministro Pistarini
Jan 27
EZE9:00 pmBuenos Aires Ministro Pistarini
18h 43m
2 stops
STL12:43 pmLambert-St Louis

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 typical price of a round-trip flight between St. Louis and Buenos Aires?

What is the cheapest month to fly from St. Louis to Buenos Aires?

August. The cheapest time of year to fly to Buenos Aires from St. Louis is August. Most expensive is November

What is the cheapest day to depart St. Louis for Buenos Aires?

Tuesday. The cheapest day of the week is typically Tuesday. The most expensive is typically Friday

When is the cheapest time to fly from St. Louis to Buenos Aires?

In the evening. St. Louis to Buenos Aires flights are approximately 13% more expensive in the morning than in the evening

What is the cheapest airline that flies to Buenos Aires from St. Louis?

United Airlines. United Airlines, Delta, and American Airlines are the most popular carriers operating from St. Louis to Buenos Aires

What is the cheapest St. Louis to Buenos Aires flight route?

Lambert-St Louis - Buenos Aires Ministro Pistarini. Fly from Lambert-St Louis to Buenos Aires Ministro Pistarini for the best St. Louis - Buenos Aires flight prices

How far in advance should you book St. Louis to Buenos Aires flights?

55 days before. The cheapest time to buy a flight from St. Louis to Buenos Aires is approximately 55 days to departure

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

You could potentially save up to 11% on your flight if you consider stops on a St. Louis to Buenos Aires flight.

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

$757

Fastest flight time

12h 43m

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 $757. The best round-trip flight deal from St. Louis to Buenos Aires found on momondo in the last 72 hours is $1,064.
The fastest flight from St. Louis to Buenos Aires takes 12h 43m
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 12h 43m 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
United AirlinesPriceFrom $814Free CancellationRating
7.4
9,175 reviews
Search United Airlines flights
DeltaPriceFrom $997Free CancellationRating
8.0
8,771 reviews
Search Delta flights
American AirlinesPriceFrom $999Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
LATAM AirlinesPriceFrom $1,106Free CancellationRating
7.5
1,944 reviews
Search LATAM 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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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