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Cheap flights from St. Louis to Buenos Aires from $1,040

This is the cheapest round-trip 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 10/10. 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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Easily compare round-trip flights from St. Louis to Buenos Aires

Below you can see the best fares for your round-trip flight route over the next six months. All fares were found on momondo this week. Browse the quickest and cheapest flights from St. Louis to Buenos Aires by changing tabs
LATAM Airlines
Oct 10
STL2:05 pmLambert-St Louis
23h 55m
2 stops
AEP4:00 pmBuenos Aires Jorge Newbery
Oct 25
AEP9:40 pmBuenos Aires Jorge Newbery
27h 55m
3 stops
STL11:35 pmLambert-St Louis
Delta
Sep 7
STL11:51 amLambert-St Louis
19h 49m
1 stop
EZE9:40 amBuenos Aires Ministro Pistarini
Sep 9
EZE3:45 amBuenos Aires Ministro Pistarini
38h 11m
2 stops
STL3:56 pmLambert-St Louis
United Airlines
May 29
STL6:15 amLambert-St Louis
23h 45m
1 stop
EZE8:00 amBuenos Aires Ministro Pistarini
Jun 17
EZE9:00 pmBuenos Aires Ministro Pistarini
27h 15m
1 stop
STL10:15 pmLambert-St Louis
Multiple Airlines
May 7
STL2:35 pmLambert-St Louis
37h 00m
2 stops
EZE5:35 amBuenos Aires Ministro Pistarini
Jul 4
EZE2:30 amBuenos Aires Ministro Pistarini
34h 04m
2 stops
STL10:34 amLambert-St Louis
Air Canada
May 29
STL11:00 amLambert-St Louis
25h 50m
2 stops
EZE2:50 pmBuenos Aires Ministro Pistarini
Jun 17
EZE4:25 pmBuenos Aires Ministro Pistarini
30h 40m
3 stops
STL9:05 pmLambert-St Louis
American Airlines
Jun 8
STL9:22 amLambert-St Louis
21h 48m
2 stops
EZE9:10 amBuenos Aires Ministro Pistarini
Aug 17
EZE10:20 pmBuenos Aires Ministro Pistarini
26h 40m
1 stop
STL11:00 pmLambert-St Louis

Search last-minute flights to Buenos Aires from St. Louis

Find and compare round-trip flight prices for your last-minute flight from St. Louis to Buenos Aires
Multiple Airlines
May 7
STL2:35 pmLambert-St Louis
37h 00m
2 stops
EZE5:35 amBuenos Aires Ministro Pistarini
Jul 4
EZE2:30 amBuenos Aires Ministro Pistarini
34h 04m
2 stops
STL10:34 amLambert-St Louis
Delta
May 7
STL12:53 pmLambert-St Louis
18h 47m
1 stop
EZE9:40 amBuenos Aires Ministro Pistarini
Jul 5
EZE8:00 pmBuenos Aires Ministro Pistarini
15h 10m
1 stop
STL9:10 amLambert-St Louis
Multiple Airlines
May 7
STL10:34 amLambert-St Louis
35h 31m
3 stops
EZE12:05 amBuenos Aires Ministro Pistarini
Jul 5
EZE4:50 pmBuenos Aires Ministro Pistarini
26h 38m
2 stops
STL5:28 pmLambert-St Louis
Delta
May 7
STL12:53 pmLambert-St Louis
20h 37m
2 stops
EZE11:30 amBuenos Aires Ministro Pistarini
Jul 5
EZE8:00 pmBuenos Aires Ministro Pistarini
15h 10m
1 stop
STL9:10 amLambert-St Louis
Multiple Airlines
May 7
STL4:48 pmLambert-St Louis
43h 32m
2 stops
EZE2:20 pmBuenos Aires Ministro Pistarini
Jul 5
EZE4:50 pmBuenos Aires Ministro Pistarini
26h 38m
2 stops
STL5:28 pmLambert-St Louis
Delta
May 7
STL3:27 pmLambert-St Louis
19h 33m
2 stops
AEP1:00 pmBuenos Aires Jorge Newbery
Jul 5
AEP3:35 pmBuenos Aires Jorge Newbery
19h 35m
2 stops
STL9:10 amLambert-St Louis

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
11,255 reviews
Search United Airlines flights
DeltaPriceFrom $919Free CancellationRating
8.0
10,975 reviews
Search Delta flights
American AirlinesPriceFrom $959Free CancellationRating
7.3
14,898 reviews
Search American Airlines flights
Copa AirlinesPriceFrom $1,003Free CancellationRating
7.8
2,875 reviews
Search Copa Airlines flights
LATAM AirlinesPriceFrom $1,100Free CancellationRating
7.5
2,490 reviews
Search LATAM Airlines flights

Delta flights from St. Louis to Buenos Aires

Our best Delta deals on St. Louis to Buenos Aires flight tickets
Delta
Sep 7
STL11:51 amLambert-St Louis
19h 49m
1 stop
EZE9:40 amBuenos Aires Ministro Pistarini
Sep 9
EZE3:45 amBuenos Aires Ministro Pistarini
38h 11m
2 stops
STL3:56 pmLambert-St Louis
Delta
Jun 8
STL4:02 pmLambert-St Louis
15h 43m
1 stop
EZE9:45 amBuenos Aires Ministro Pistarini
Aug 17
EZE8:00 pmBuenos Aires Ministro Pistarini
14h 52m
1 stop
STL8:52 amLambert-St Louis
Delta
May 7
STL12:53 pmLambert-St Louis
18h 47m
1 stop
EZE9:40 amBuenos Aires Ministro Pistarini
Jul 5
EZE8:00 pmBuenos Aires Ministro Pistarini
15h 10m
1 stop
STL9:10 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
Jun 8
STL9:22 amLambert-St Louis
21h 48m
2 stops
EZE9:10 amBuenos Aires Ministro Pistarini
Aug 17
EZE10:20 pmBuenos Aires Ministro Pistarini
26h 40m
1 stop
STL11:00 pmLambert-St Louis
American Airlines
Jun 8
STL9:22 amLambert-St Louis
19h 43m
2 stops
EZE7:05 amBuenos Aires Ministro Pistarini
Aug 17
EZE8:50 pmBuenos Aires Ministro Pistarini
19h 06m
2 stops
STL1:56 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 cheapest month to fly from St. Louis to Buenos Aires?

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

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 Wednesday

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

In the afternoon. St. Louis to Buenos Aires flights are approximately 15% more expensive in the morning than in the afternoon

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

United Airlines. American Airlines, Copa Airlines, and Delta 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?

28 days before. The cheapest time to buy a flight from St. Louis to Buenos Aires is approximately 28 days to departure

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

$1,040

Fastest flight time

15h 43m

Direct flights

None

Airports in Buenos Aires

2 airports
The best flight deal from St. Louis to Buenos Aires found on momondo in the last 72 hours is $1,040
The fastest flight from St. Louis to Buenos Aires takes 15h 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 15h 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.


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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Tue 4/30
Tue 5/7
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Find better results for your stay in Argentina

Fly into one of these airports located in Buenos Aires
Airports listed have a maximum distance of 17.0 mi from Buenos Aires