STL - AEP

$487 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 12/12. 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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41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$830
LATAM Airlines
Tue 11/18Wed 11/26
STL - AEP • 2 stops
Cheapest one-way
$487
Multiple Airlines
Fri 12/12
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

Tue, Nov 18 - Wed, Nov 26
LATAM Airlines Logo
9:33 am - 7:55 amSTL-AEP
19h 22m2 stops
LATAM Airlines Logo
12:40 pm - 6:35 pmAEP-STL
32h 55m2 stops
$830LATAM Airlines
Find Deal
Sun, Mar 8 - Tue, Mar 17
LATAM Airlines Logo
7:05 pm - 9:30 pmSTL-AEP
24h 25m2 stops
LATAM Airlines Logo
5:15 pm - 11:50 amAEP-STL
20h 35m2 stops
$880LATAM Airlines
Find Deal
Tue, Nov 18 - Wed, Nov 26
LATAM Airlines Logo
9:33 am - 7:55 amSTL-AEP
19h 22m2 stops
LATAM Airlines Logo
3:40 pm - 9:59 amAEP-STL
21h 19m2 stops
$927LATAM Airlines
Find Deal
Wed, Feb 4 - Wed, Feb 18
LATAM Airlines Logo
6:00 am - 7:55 amSTL-AEP
22h 55m2 stops
LATAM Airlines Logo
3:40 pm - 9:08 amAEP-STL
20h 28m2 stops
$928LATAM Airlines
Find Deal
Fri, Mar 13 - Sun, Mar 22
LATAM Airlines Logo
7:05 pm - 9:30 pmSTL-AEP
24h 25m2 stops
LATAM Airlines Logo
11:30 am - 10:50 amAEP-STL
25h 20m2 stops
$930LATAM Airlines
Find Deal
Mon, Feb 23 - Fri, Mar 6
LATAM Airlines Logo
10:13 am - 9:40 amSTL-AEP
20h 27m2 stops
LATAM Airlines Logo
5:15 pm - 9:08 amAEP-STL
18h 53m2 stops
$978LATAM Airlines
Find Deal
Wed, Feb 4 - Wed, Feb 18
LATAM Airlines Logo
6:00 am - 11:40 amSTL-AEP
26h 40m3 stops
LATAM Airlines Logo
3:40 pm - 9:08 amAEP-STL
20h 28m2 stops
$1,000LATAM Airlines
Find Deal
Thu, Apr 9 - Tue, May 12
LATAM Airlines Logo
11:51 am - 2:00 pmSTL-AEP
24h 09m2 stops
LATAM Airlines Logo
5:00 pm - 10:45 amAEP-STL
19h 45m2 stops
$1,018LATAM Airlines
Find Deal
Mon, Feb 23 - Fri, Mar 6
Multiple Airlines Logo
4:05 pm - 5:00 amSTL-AEP
33h 55m3 stops
Multiple Airlines Logo
10:35 am - 3:29 pmAEP-STL
31h 54m3 stops
$1,373Multiple Airlines
Find Deal
Wed, Feb 4 - Wed, Feb 18
Multiple Airlines Logo
4:05 pm - 4:20 amSTL-AEP
33h 15m3 stops
Multiple Airlines Logo
1:40 pm - 3:29 pmAEP-STL
28h 49m3 stops
$1,463Multiple Airlines
Find Deal
Useful Info

Good to know

Cheapest flight$487
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 $487 for a one-way ticket and $830 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)