STL - AEP

$431 Find Cheap Flights from St. Louis to Buenos Aires

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Buenos Aires departing on 2/20. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Buenos Aires Jorge Newbery Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Buenos Aires, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Buenos Aires, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$1,058
LATAM Airlines
Sun 3/8Tue 3/17
STL - AEP • 2 stops
Cheapest one-way
$431
Multiple Airlines
Fri 2/20
STL - AEP • 3 stops
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Buenos Aires!
Flight Deals
Useful Info
Flight Deals

Cheap Flights from St. Louis to Buenos Aires (STL-AEP)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Buenos Aires that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from St. Louis to Buenos Aires

Sun, Mar 8 - Tue, Mar 17
LATAM Airlines Logo
7:05 pm - 5:00 pmSTL-AEP
19h 55m2 stops
LATAM Airlines Logo
5:15 pm - 11:50 amAEP-STL
20h 35m2 stops
$1,058LATAM Airlines
Find Deal
Sat, Jan 17 - Sun, Jan 25
LATAM Airlines Logo
5:00 pm - 6:40 pmSTL-AEP
22h 40m2 stops
LATAM Airlines Logo
3:40 pm - 11:04 amAEP-STL
22h 24m2 stops
$1,098LATAM Airlines
Find Deal
Sat, Jan 17 - Sun, Jan 25
LATAM Airlines Logo
5:00 pm - 4:00 pmSTL-AEP
20h 00m2 stops
LATAM Airlines Logo
5:15 pm - 11:04 amAEP-STL
20h 49m2 stops
$1,201LATAM Airlines
Find Deal
Sat, Dec 13 - Thu, Dec 18
LATAM Airlines Logo
1:35 pm - 2:40 pmSTL-AEP
22h 05m2 stops
LATAM Airlines Logo
2:55 pm - 8:24 amAEP-STL
20h 29m2 stops
$1,493LATAM Airlines
Find Deal
Sat, Dec 13 - Sat, Dec 20
LATAM Airlines Logo
1:35 pm - 2:40 pmSTL-AEP
22h 05m2 stops
LATAM Airlines Logo
5:15 pm - 12:21 pmAEP-STL
22h 06m2 stops
$1,518LATAM Airlines
Find Deal
Fri, Dec 5 - Tue, Dec 9
LATAM Airlines Logo
5:12 pm - 6:40 pmSTL-AEP
22h 28m2 stops
LATAM Airlines Logo
3:40 pm - 10:45 amAEP-STL
22h 05m2 stops
$1,625LATAM Airlines
Find Deal
Sat, Jan 3 - Sat, Jan 10
LATAM Airlines Logo
5:13 pm - 7:55 amSTL-AEP
35h 42m2 stops
LATAM Airlines Logo
5:15 pm - 11:39 pmAEP-STL
33h 24m2 stops
$1,746LATAM Airlines
Find Deal
Mon, Jan 5 - Sat, Jan 10
LATAM Airlines Logo
9:59 am - 7:55 amSTL-AEP
18h 56m2 stops
LATAM Airlines Logo
3:40 pm - 11:05 amAEP-STL
22h 25m2 stops
$1,829LATAM Airlines
Find Deal
Sat, Dec 13 - Sat, Jan 10
Multiple Airlines Logo
6:00 am - 8:40 pmSTL-AEP
59h 40m3 stops
Multiple Airlines Logo
9:50 am - 2:42 pmAEP-STL
55h 52m3 stops
$1,910Multiple Airlines
Find Deal
Sat, Dec 13 - Sat, Jan 10
Multiple Airlines Logo
6:00 am - 3:40 amSTL-AEP
42h 40m3 stops
Multiple Airlines Logo
9:50 am - 2:42 pmAEP-STL
55h 52m3 stops
$2,022Multiple Airlines
Find Deal
Useful Info

Good to know

Cheapest flight$431
Flight from St. Louis to Buenos Aires

When to book flights from St. Louis to Buenos Aires

Are your dates flexible? Find out the best times to travel from St. Louis to Buenos Aires based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking St. Louis to Buenos Aires flights

  • What is the cheapest flight from St. Louis to Buenos Aires Jorge Newbery Airport?

    In the last 3 days, the lowest price for a flight from St. Louis to Buenos Aires Jorge Newbery Airport was $431 for a one-way ticket and $1,058 for a round-trip.

  • Do I need a passport to fly between St. Louis and Buenos Aires?

    Yes

  • Which aircraft models fly most regularly from St. Louis to Buenos Aires?

    We unfortunately don’t have that data for this specific route.

  • How does KAYAK find such low prices on flights from St. Louis to Buenos Aires?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from St. Louis to Buenos Aires.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from St. Louis to Buenos Aires?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Buenos Aires from St. Louis is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from St. Louis to Buenos Aires?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Buenos Aires with an airline and back to St. Louis with another airline. Booking your flights between St. Louis and AEP can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from St. Louis to Buenos Aires?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Buenos Aires from St. Louis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Everything you need to know for your flight from St. Louis to Buenos Aires

Information on your arrival and departure airports

St. Louis (STL)
Jorge Newbery (AEP)