$646 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 5/11. 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
$1,273
LATAM Airlines
Tue 3/31Wed 6/10
EZE - STL • 2 stops
Cheapest one-way
$646
Air Canada
Mon 5/11
EZE - STL • 2 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, Mar 31 - Wed, Jun 10
LATAM Airlines Logo
3:55 am - 11:58 pm
EZE
-
STL
22h 03m
2 stops
LATAM Airlines Logo
1:30 pm - 9:45 am
STL
-
EZE
18h 15m
1 stop
$1,273LATAM Airlines
Mon, Apr 6 - Wed, Jun 10
LATAM Airlines Logo
7:45 am - 11:58 pm
EZE
-
STL
18h 13m
2 stops
LATAM Airlines Logo
5:30 pm - 9:45 am
STL
-
EZE
14h 15m
1 stop
$1,275LATAM Airlines
Mon, Apr 6 - Wed, Jun 10
LATAM Airlines Logo
8:10 pm - 11:09 am
EZE
-
STL
16h 59m
1 stop
LATAM Airlines Logo
1:30 pm - 9:45 am
STL
-
EZE
18h 15m
1 stop
$1,276LATAM Airlines
Tue, Apr 7 - Thu, Jun 11
LATAM Airlines Logo
7:35 am - 11:58 pm
EZE
-
STL
18h 23m
2 stops
LATAM Airlines Logo
1:30 pm - 9:45 am
STL
-
EZE
18h 15m
1 stop
$1,277LATAM Airlines
Tue, Apr 7 - Thu, Jun 11
Delta Logo
1:20 pm - 12:58 pm
EZE
-
STL
25h 38m
2 stops
Delta Logo
9:00 am - 8:35 am
STL
-
EZE
21h 35m
2 stops
$1,318Delta
Mon, Apr 6 - Sat, Jun 13
LATAM Airlines Logo
7:45 am - 11:58 pm
EZE
-
STL
18h 13m
2 stops
LATAM Airlines Logo
5:30 pm - 11:30 am
STL
-
EZE
16h 00m
2 stops
$1,329LATAM Airlines
Mon, Apr 6 - Sat, Jun 13
Delta Logo
8:10 pm - 11:09 am
EZE
-
STL
16h 59m
1 stop
Delta Logo
3:42 pm - 9:45 am
STL
-
EZE
16h 03m
1 stop
$1,330Delta
Mon, Apr 6 - Sat, Jun 13
LATAM Airlines Logo
7:35 am - 9:05 am
EZE
-
STL
27h 30m
2 stops
LATAM Airlines Logo
1:30 pm - 11:30 am
STL
-
EZE
20h 00m
2 stops
$1,331LATAM Airlines
Mon, Apr 6 - Sat, Jun 13
Delta Logo
8:10 pm - 9:05 am
EZE
-
STL
14h 55m
1 stop
Delta Logo
3:42 pm - 9:45 am
STL
-
EZE
16h 03m
1 stop
$1,333Delta
Sat, Apr 11 - Thu, Jun 18
Delta Logo
1:20 pm - 11:09 am
EZE
-
STL
23h 49m
2 stops
Delta Logo
1:30 pm - 8:35 am
STL
-
EZE
17h 05m
2 stops
$1,373Delta
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 22h 06m.

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

There are around 329 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 45% of flights departing in the morning.

Good to know

Low seasonApril
Cheapest flight$646
Best time to beat the crowds with an average 22% drop in price.
Most popular time to fly and prices are also 21% 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 2,298 direct flights from within Argentina to St. Louis. The most common day for departures is Thursday, with 15% 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 8203 reviews
7.9Comfort
8.1Boarding
7.8Entertainment
8.5Crew
7.2Food
Airline reviews

Awful - both legs. The check in was awful, getting on the plane required walking down a spiral staircase (dangerous), then taking a bus about 5 miles out from the terminal. The seat was broken (I was in business), there was no internet during the flight (both legs). The aircraft was very old. I saw rust in some place, tape holding things up in the bathroom. This was an unacceptable experience for such a long haul flight.

2.0 MediocreShebani, Feb 2026
CDG - SFO
Read more Delta reviews

Awful - both legs. The check in was awful, getting on the plane required walking down a spiral staircase (dangerous), then taking a bus about 5 miles out from the terminal. The seat was broken (I was in business), there was no internet during the flight (both legs). The aircraft was very old. I saw rust in some place, tape holding things up in the bathroom. This was an unacceptable experience for such a long haul flight.

Totally worth the miles to upgrade to Delta Comfort. Plenty of legroom.

This was my first time flying Delta ever and I had a great experience!

Smallest leg room I've ever had on a plane.

They took all carry-on luggage from Groups 6 -9 - I was group 5 and waiting in line to board - they made me check my luggage too. That then went to baggage claim and delayed departure from the airport. There was overhead room in my seating area - Delta over reacted. Also, had a gentleman next to me that took up 1/2 my seat.

Flight delay was frustrating, also you cannot checkin online without delta app, web browser check-in throw errors

The gate agent was most helpful in getting me on to fly standby. I greatly appreciate it.

bulkhead seat had very little legroom - even in bsiness class.

The plane was an older model, so it wasn’t as comfortable as others. The flight attendants were not helpful during onboarding. It was a full flight so there was chaos finding space for baggage.

Sorry I didn't realize I was writing a review for each leg. Please see my previous review - it applies to the entire flight, not just a single leg.

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