$967 Find Cheap Flights from Argentina to St. Louis

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to St. Louis departing on 1/15. 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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Everything you should know

Cheapest round-trip
$967
American Airlines
Tue 4/7Fri 6/12
EZE - STL • 1 stop
Cheapest one-way
$633
Multiple Airlines
Thu 1/15
EZE - STL • 3 stops
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We hope you love your trip to St. Louis!
Flight Deals
Booking Insights
Flight Deals

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, Apr 7 - Fri, Jun 12
American Airlines Logo
8:25 pm - 10:16 am
EZE
-
STL
15h 51m1 stop
American Airlines Logo
9:40 am - 7:10 am
STL
-
EZE
19h 30m1 stop
$967American Airlines
Tue, Apr 7 - Fri, Jun 12
American Airlines Logo
10:20 pm - 3:06 pm
EZE
-
STL
18h 46m2 stops
American Airlines Logo
5:02 am - 8:05 pm
STL
-
EZE
13h 03m1 stop
$971American Airlines
Wed, Apr 8 - Thu, Jun 11
Delta Logo
8:10 pm - 3:13 pm
EZE
-
STL
21h 03m1 stop
Delta Logo
7:05 pm - 2:45 pm
STL
-
EZE
17h 40m2 stops
$980Delta
Mon, Apr 6 - Tue, Jun 9
Delta Logo
8:10 pm - 5:53 pm
EZE
-
STL
23h 43m1 stop
Delta Logo
7:20 am - 9:45 am
STL
-
EZE
24h 25m1 stop
$995Delta
Wed, Apr 8 - Thu, Jun 11
Copa Airlines Logo
9:00 pm - 9:25 am
EZE
-
STL
14h 25m1 stop
Copa Airlines Logo
11:00 am - 8:00 am
STL
-
EZE
19h 00m1 stop
$1,003Copa Airlines
Sun, Jun 7 - Thu, Jun 11
Delta Logo
8:10 pm - 8:07 am
EZE
-
STL
13h 57m1 stop
Delta Logo
5:30 pm - 9:45 am
STL
-
EZE
14h 15m1 stop
$1,014Delta
Mon, Apr 6 - Fri, Jun 12
LATAM Airlines Logo
8:10 pm - 11:09 am
EZE
-
STL
16h 59m1 stop
LATAM Airlines Logo
1:30 pm - 9:45 am
STL
-
EZE
18h 15m1 stop
$1,021LATAM Airlines
Fri, Jun 5 - Tue, Jun 9
Delta Logo
7:45 am - 11:38 pm
EZE
-
STL
17h 53m2 stops
Delta Logo
3:42 pm - 9:45 am
STL
-
EZE
16h 03m1 stop
$1,023Delta
Sun, Apr 5 - Tue, Jun 9
LATAM Airlines Logo
1:20 pm - 5:53 pm
EZE
-
STL
30h 33m2 stops
LATAM Airlines Logo
5:30 pm - 11:30 am
STL
-
EZE
16h 00m2 stops
$1,027LATAM Airlines
Mon, Apr 6 - Thu, Jun 11
LATAM Airlines Logo
8:10 pm - 11:09 am
EZE
-
STL
16h 59m1 stop
LATAM Airlines Logo
3:42 pm - 9:45 am
STL
-
EZE
16h 03m1 stop
$1,030LATAM Airlines
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 23h 49m.

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

There are around 193 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 47% of flights departing in the morning.

Good to know

Low seasonApril
Cheapest flight$633
Best time to beat the crowds with an average 25% drop in price.
Most popular time to fly and prices are also 24% 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.

  • 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.

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

    Each week there are around 1,350 direct flights from within Argentina to St. Louis. The most common day for departures is Friday, with 17% 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 8032 reviews
8.1Boarding
8.5Crew
7.2Food
7.9Comfort
7.8Entertainment
Airline reviews

It was Delta, but the flight attendants were stressful and disrespectful. I am a diamond member a travel weekly. I have not had a negative thing to share in quite some time. But this was noticeable.

2.0 MediocreWilliam, Jan 2026
LGA - BOS
Read more Delta reviews

It was Delta, but the flight attendants were stressful and disrespectful. I am a diamond member a travel weekly. I have not had a negative thing to share in quite some time. But this was noticeable.

Comfort Plus seat 11E seemed smaller than prior flights. The movie selection is good. Watched most of the most recent Tron movie. I'll watch the remaining part later as my movie is saved in the Delta Seatback Experience.

Flight was late from Newark to Atlanta, I asked flight attendant to please let my family of 3 out first when we landed to Atlanta because we were late for our connecting flight to Quito. She didn't and we were late for 5 minutes we couldn't board the plane and spend hours trying to get another flight with customer service for the next day.

I really liked the legroom. I am 6’4”.a at For some reason our seats were not together and using the app to fix it didn’t work. Passengers were nice enough to move for us but you should absolutely ensure a parent sits with their child.

Late delayed flight delays boarding and delays leaving and delays on arrival too. Cramped plane no room no food.

DTW line is too long. The flights from DTW to BWI are always delayed for unknown reasons.

Delta canceled our flight and we had to scramble to find another airline to get home. Phoenix is not a delta hub so they didn’t have another plane. It would have been a red eye though Salt Lake City. Getting in at 5am. No bueno.

This flight was no comparison to our prior flight. I'm thinking it all has to do with the age of the aircraft.

This flight was a first class choice and left much to be desired. Seat backs on seats were falling apart and torn. Seats actually didn't come to a "full & upright position". Pull out table was sprung. Not any significant leg room. All in all we were on an obviously older plane and felt overcharged for what we received as first class.

Flight was delayed several times. At one point, they "pulled back" 15 minutes from the delayed boarding and sent a text saying we would board sooner than previously advised. The flight then was delayed again. And when we boarded, there was an unspecified technical issue which had us waiting in the plane for about an hour.

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