$830 Find Cheap Flights from Argentina to St. Louis

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight to St. Louis departing on 11/18. 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 St. Louis

 
These are the airlines KAYAK users have selected most often from within our search results for flights to St. Louis, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results for flights to St. Louis, as well as popular online travel agencies
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Cheap Flights from Argentina to St. Louis

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Argentina to St. Louis 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 Argentina to St. Louis

Tue, Nov 18 - Tue, Nov 25
American Airlines Logo
9:40 pm - 4:11 pmEZE-STL
21h 31m1 stop
American Airlines Logo
11:42 am - 8:20 amSTL-EZE
17h 38m1 stop
$830American Airlines
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Tue, Nov 18 - Tue, Nov 25
American Airlines Logo
11:20 pm - 2:36 pmEZE-STL
18h 16m2 stops
American Airlines Logo
9:36 am - 8:20 amSTL-EZE
19h 44m1 stop
$834American Airlines
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Tue, Nov 18 - Tue, Nov 25
Delta Logo
10:25 pm - 5:09 pmEZE-STL
21h 44m2 stops
Delta Logo
7:05 am - 6:20 amSTL-EZE
20h 15m2 stops
$867Delta
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Wed, Nov 12 - Sun, Nov 16
United Airlines Logo
10:05 pm - 10:39 amEZE-STL
15h 34m1 stop
United Airlines Logo
4:35 pm - 7:20 amSTL-EZE
35h 45m1 stop
$1,075United Airlines
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Wed, Nov 12 - Sun, Nov 16
United Airlines Logo
10:05 pm - 10:39 amEZE-STL
15h 34m1 stop
United Airlines Logo
4:35 pm - 7:20 amSTL-EZE
35h 45m1 stop
$1,085United Airlines
Find Deal
Wed, Nov 12 - Sun, Nov 16
United Airlines Logo
11:55 pm - 3:46 pmEZE-STL
18h 51m2 stops
United Airlines Logo
4:35 pm - 7:20 amSTL-EZE
35h 45m1 stop
$1,090United Airlines
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Wed, Nov 12 - Sun, Nov 16
United Airlines Logo
10:05 pm - 2:24 pmEZE-STL
19h 19m2 stops
United Airlines Logo
10:00 am - 7:20 amSTL-EZE
18h 20m2 stops
$1,144United Airlines
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Wed, Nov 12 - Sun, Nov 16
United Airlines Logo
11:55 pm - 2:24 pmEZE-STL
17h 29m2 stops
United Airlines Logo
10:00 am - 7:20 amSTL-EZE
18h 20m2 stops
$1,154United Airlines
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Mon, Nov 17 - Tue, Nov 25
LATAM Airlines Logo
4:05 am - 9:58 pmEZE-STL
20h 53m2 stops
LATAM Airlines Logo
5:17 pm - 2:50 amSTL-EZE
30h 33m2 stops
$1,177LATAM Airlines
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Tue, Nov 18 - Tue, Nov 25
Multiple Airlines Logo
7:10 am - 3:29 pmEZE-STL
35h 19m2 stops
Multiple Airlines Logo
3:14 pm - 3:10 pmSTL-EZE
20h 56m3 stops
$2,041Multiple Airlines
Find Deal

Everything you should know

Cheapest round-trip
$830
American Airlines
Tue 11/18Tue 11/25
EZE - STL • 1 stop
Cheapest one-way
$1,016
Delta
Tue 1/6
EZE - STL • 1 stop
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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 St. Louis!
Booking Insights

KAYAK's insights & trends for flights to St. Louis

Get data-powered insights and trends for flights to St. Louis to help you find the cheapest flights, the best time to fly and much more.

How long is the flight to St. Louis?

The duration of your flight to St. Louis depends on your departure and arrival airports. Obviously any flights that include a layover will also be longer. The most popular route to St. Louis on KAYAK is from Buenos Aires, which takes 21h 08m.

How many direct flights to St. Louis are there each day?

There are around 264 direct flights from within Argentina to St. Louis every day. Most flights depart in the morning, with 8:00 am the most common departure time and 49% of flights departing in the morning.

Good to know

Low seasonMarch
Cheapest flight$830
Best time to beat the crowds with an average 17% drop in price.
Most popular time to fly and prices are also 16% lower on average.
Flight from Buenos Aires to St. Louis

FAQs - booking St. Louis flights

  • How far is Lambert-St Louis Airport from central St. Louis?

    Lambert-St Louis Airport is 13 miles from the center of St. Louis.

  • What is the name of St. Louis’s airport?

    St. Louis is served by Lambert-St Louis Airport, also commonly referred to as Lambert Field, Lambert-St Louis, St. Louis Lambert, or St. Louis Lambert Intl. The airport code is STL.

  • What is the cheapest day to fly to St. Louis?

    Based on KAYAK data, the cheapest day to fly to St. Louis is Monday where tickets can be as cheap as $958. On the other hand, the most expensive day to fly is Sunday, where prices are $1,128 on average.

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

    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 to St. Louis.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to 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 to St. Louis?

    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 St. Louis with an airline and back with another airline.

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

    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 St. Louis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to St. Louis?

    The cheapest time of day to fly to St. Louis is generally in the morning, when flights cost $958 on average. The most expensive time of day to fly to St. Louis is generally at night, which is peak travel time and where the average cost of a ticket is $1,171.

  • How many direct flights to St. Louis are there each week?

    Each week there are around 1,848 direct flights from within Argentina to St. Louis. The most common day for departures is Saturday, with 19% of flights taking off on this day.

Top tips for finding cheap flights to St. Louis

  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest St. Louis flight deals.

Reviews of the top airline flying from Argentina to St. Louis

 
See real verified KAYAK customer reviews for airlines flying to St. Louis. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Argentina to St. Louis. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with to St. Louis? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
DeltaOverall score based on 7982 reviews
7.9Comfort
7.9Entertainment
8.2Boarding
8.5Crew
7.3Food
Airline reviews

The flight used a B767 with a very old interior from before 2014. The entertainment system did not work at all during the flight despite attempts to reset the system. It was like they flew this route just to be competitive.

6.0 GoodDavid, Oct 2025LAX - JFK
Read more Delta reviews

The flight used a B767 with a very old interior from before 2014. The entertainment system did not work at all during the flight despite attempts to reset the system. It was like they flew this route just to be competitive.

Crew blocked exits to front of ship with galley carts. Also split five person family apart on international flight without fixing.

They changed planes and the new plane couldn’t carry enough fuel to fly across the country so we had to stop in Kansas City to refuel. Flight was delayed .

Flight was too crowded and seats are too small, especially since passengrs are getting larger. Having a middle seat is ALWAYS tough! Woman on my left was large & kept creeping in to my space. Flight personnel were great! Have more savory rather than sweet snacks please.

Flight was crowded and the woman sitting on my left was large & kept crouching in to my space. You need bigger seats or smaller passengers to fit into the seats you DO have! Snack were OK. Would appreciate if airlines had more savory rather than sweet snacks, thank you!

Delayed flight (1hour) plus a long layover after an overnight flight with no backup plane available.

We were delayed, which I think had to do with air traffic control. Otherwise, everything was great.

The boarding process needs to be refined. Sometimes the gate crew calls out the zones and then flip to showing the.zones boarding on the gate monitor display. So, unless you are huddled around the gate lanes watching the monitor, you could miss your boarding zone. Suggest the zones be announced each time a new zone is allowed to board.

The boarding process needs to be refined. Sometimes the gate crew call out the boarding zone, and then flip to the monitor to show which zones are boarding. So unless everyone is gathered around to see the monitor there is usually confusion as wi which zones are boarding.

On time flight. Seat comfort could be better in the Comfort section.

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
O'Fallon
Wentzville
Farmington
Eureka
Litchfield
Grafton
Shrewsbury
Glencoe

Everything you need to know for your flight to St. Louis

Information on the airport you'll fly into in St. Louis

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