$608 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 4/19. 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
$1,226
Typical prices: $1,134-$1,146
LATAM Airlines
Tue 3/31Wed 6/10
EZE - STL • 2 stops
Cheapest one-way
$608
Multiple Airlines
Sun 4/19
EZE - STL • 3 stops
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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, Mar 31 - Wed, Jun 10
LATAM Airlines Logo
3:55 am - 11:58 pm
EZE
-
STL
22h 03m2 stops
LATAM Airlines Logo
1:30 pm - 9:00 pm
STL
-
EZE
29h 30m2 stops
$1,226LATAM Airlines
Wed, Apr 1 - Wed, Jun 10
LATAM Airlines Logo
7:35 am - 11:58 pm
EZE
-
STL
18h 23m2 stops
LATAM Airlines Logo
1:30 pm - 9:00 pm
STL
-
EZE
29h 30m2 stops
$1,227LATAM Airlines
Tue, Apr 7 - Thu, Jun 11
LATAM Airlines Logo
8:10 pm - 11:09 am
EZE
-
STL
16h 59m1 stop
LATAM Airlines Logo
1:30 pm - 8:35 am
STL
-
EZE
17h 05m2 stops
$1,231LATAM Airlines
Tue, Apr 7 - Thu, Jun 11
LATAM Airlines Logo
8:10 pm - 11:09 am
EZE
-
STL
16h 59m1 stop
LATAM Airlines Logo
1:30 pm - 8:35 am
STL
-
EZE
17h 05m2 stops
$1,232LATAM Airlines
Mon, Apr 6 - Sat, Jun 13
LATAM Airlines Logo
7:45 am - 9:05 am
EZE
-
STL
27h 20m2 stops
LATAM Airlines Logo
5:30 pm - 2:45 pm
STL
-
EZE
19h 15m2 stops
$1,282LATAM Airlines
Mon, Apr 6 - Sat, Jun 13
LATAM Airlines Logo
7:45 am - 9:05 am
EZE
-
STL
27h 20m2 stops
LATAM Airlines Logo
5:30 pm - 2:45 pm
STL
-
EZE
19h 15m2 stops
$1,283LATAM Airlines
Tue, Apr 7 - Thu, Jun 11
Delta Logo
8:10 pm - 9:05 am
EZE
-
STL
14h 55m1 stop
Delta Logo
5:30 pm - 9:45 am
STL
-
EZE
14h 15m1 stop
$1,407Delta
Tue, Apr 7 - Thu, Jun 11
LATAM Airlines Logo
8:10 pm - 11:09 am
EZE
-
STL
16h 59m1 stop
LATAM Airlines Logo
5:30 pm - 9:45 am
STL
-
EZE
14h 15m1 stop
$1,408LATAM Airlines
Wed, Apr 1 - Wed, Jun 10
LATAM Airlines Logo
7:35 am - 5:53 pm
EZE
-
STL
36h 18m3 stops
LATAM Airlines Logo
5:30 pm - 9:00 pm
STL
-
EZE
25h 30m2 stops
$1,411LATAM Airlines
Wed, Apr 1 - Sun, Jun 14
LATAM Airlines Logo
7:35 am - 11:58 pm
EZE
-
STL
18h 23m2 stops
LATAM Airlines Logo
7:05 pm - 9:45 am
STL
-
EZE
12h 40m1 stop
$1,463LATAM 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 14h 59m.

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

There are around 220 direct flights from within Argentina to St. Louis every day. Most flights depart in the morning, with 7:00 am the most common departure time and 46% of flights departing in the morning.

Good to know

Low seasonSeptember
Cheapest flight$1,113
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.

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

    Based on KAYAK data, the cheapest day to fly to St. Louis is Thursday where tickets can be as cheap as $1,092. On the other hand, the most expensive day to fly is Thursday, where prices are $1,092 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 1,537 direct flights from within Argentina to St. Louis. The most common day for departures is Monday, with 23% 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 8014 reviews
8.5Crew
8.1Boarding
7.3Food
7.9Comfort
7.9Entertainment
Airline reviews

The gate attendants and the crew were terrible. Because of high winds, they needed to carry more fuel, so they had to get volunteers to take the next flight at 6 am the next day. They did a terrible job of it - our flight ended up taking off just under 3 hours of the scheduled time. I hope to never fly Delta again.

2.0 MediocreBarbara, Dec 2025
PHL - MSP
Read more Delta reviews

The gate attendants and the crew were terrible. Because of high winds, they needed to carry more fuel, so they had to get volunteers to take the next flight at 6 am the next day. They did a terrible job of it - our flight ended up taking off just under 3 hours of the scheduled time. I hope to never fly Delta again.

Did not realize internet screen was hidden between seats and no info printed!!!!

I went to washroom twice and once there was no toilet seat cover and the other no toilet paper at all. I don't think it was ever replenished or checked before we boarded as it was very early on in the flight.

2 of the seats in row 31 the entertainment system was not working, and one seat the tray table did not go all the way down. Flight arrived early and departed on time which was great.

Very good flight crew and very nice people staff were incredible especially the gate agent

Waited at the usual crowded gate at DCA where one ends up standing up because there aren't enough seats.

The flight was delayed for about 2 hrs. Other than it, it was good.

Advertised fruit trays with cheese, but only snacks handed out!

The plant way delayed departing by 3 hours. It was an old airplane with broken seats and armrests. The bathroom made a hollering sound. A really crappy flight experience and travel day all around.

Premium economy is like the forgotten class. Aside from meal service never saw a flight attendant. Any additional beverages required going to the very back of the plane to request and there was rarely an attendant there. Seat leg / foot rest hardly elevates and not well suite for someone under 5’6. Bulky armrests

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