$449 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
$1,278
LATAM Airlines
Tue 4/7Thu 6/11
EZE - STL • 2 stops
Cheapest one-way
$449
Multiple Airlines
Mon 5/11
EZE - STL • 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 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 - Thu, Jun 11
LATAM Airlines Logo
11:30 am - 5:53 pm
EZE
-
STL
32h 23m
2 stops
LATAM Airlines Logo
5:30 pm - 11:30 am
STL
-
EZE
16h 00m
2 stops
$1,278LATAM Airlines
Mon, Apr 6 - Wed, Jun 10
Delta Logo
8:10 pm - 9:05 am
EZE
-
STL
14h 55m
1 stop
Delta Logo
5:30 pm - 9:45 am
STL
-
EZE
14h 15m
1 stop
$1,280Delta
Tue, Apr 7 - Thu, Jun 11
LATAM Airlines Logo
1:20 pm - 5:53 pm
EZE
-
STL
30h 33m
2 stops
LATAM Airlines Logo
1:30 pm - 8:35 am
STL
-
EZE
17h 05m
2 stops
$1,284LATAM Airlines
Sun, Apr 5 - Sat, Jun 13
LATAM Airlines Logo
3:55 am - 11:58 pm
EZE
-
STL
22h 03m
2 stops
LATAM Airlines Logo
5:30 pm - 11:30 am
STL
-
EZE
16h 00m
2 stops
$1,333LATAM Airlines
Mon, Apr 6 - Sat, Jun 13
Delta Logo
8:10 pm - 4:16 pm
EZE
-
STL
22h 06m
1 stop
Delta Logo
3:42 pm - 9:45 am
STL
-
EZE
16h 03m
1 stop
$1,335Delta
Mon, Apr 6 - Sat, Jun 13
LATAM Airlines Logo
7:35 am - 11:09 am
EZE
-
STL
29h 34m
3 stops
LATAM Airlines Logo
10:55 am - 11:30 am
STL
-
EZE
22h 35m
2 stops
$1,336LATAM Airlines
Wed, Apr 1 - Sun, Jun 14
LATAM Airlines Logo
7:35 am - 11:58 pm
EZE
-
STL
18h 23m
2 stops
LATAM Airlines Logo
6:00 am - 8:35 am
STL
-
EZE
24h 35m
2 stops
$1,338LATAM Airlines
Sat, Apr 11 - Thu, Jun 18
LATAM Airlines Logo
1:20 pm - 11:09 am
EZE
-
STL
23h 49m
2 stops
LATAM Airlines Logo
5:30 pm - 9:45 am
STL
-
EZE
14h 15m
1 stop
$1,340LATAM Airlines
Tue, Apr 7 - Thu, Jun 11
Delta Logo
8:10 pm - 11:09 am
EZE
-
STL
16h 59m
1 stop
Delta Logo
7:05 pm - 9:45 am
STL
-
EZE
12h 40m
1 stop
$1,437Delta
Tue, Apr 7 - Thu, Jun 11
Delta Logo
8:10 pm - 9:05 am
EZE
-
STL
14h 55m
1 stop
Delta Logo
7:05 pm - 9:45 am
STL
-
EZE
12h 40m
1 stop
$1,439Delta
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 20h 28m.

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

There are around 262 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 43% of flights departing in the morning.

Good to know

Low seasonApril
Cheapest flight$449
Best time to beat the crowds with an average 25% drop in price.
Most popular time to fly and prices are also 1% 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 1,834 direct flights from within Argentina to St. Louis. The most common day for departures is Thursday, with 21% 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 8144 reviews
7.9Comfort
8.5Crew
8.1Boarding
7.8Entertainment
7.2Food
Airline reviews

I didn't take this flight. I changed the flight. Why am I getting surveys and notifications on flights that I change. Seems like a defect with Kayak.

2.0 MediocreTodd, Jan 2026
IAH - ATL
Read more Delta reviews

I didn't take this flight. I changed the flight. Why am I getting surveys and notifications on flights that I change. Seems like a defect with Kayak.

Delta One is extraordinary. I fly business when somebody hires me. I just wonder why there is such a chasm between business class and the insanely inhumane and nonsensical coach. The seats are not large enough to fit even my tiny wife. We fly 10% of what we did because we don’t want to pay 5-10 k but for $400 it’s unbearable. It seems like the accountants took over and made stupid decisions. Screw in 20 extra seats and make it so unbearable that people fly 90% less. Just put the damn price up and put some proper chairs in. But business, yay.

Timing, quality of service, promptness and courtesy of the staff

It was last minute due to weather - considering - it was amazing! Good smiles, friendly staff and they were making sure we knew what was going on when and where.

delta last minute gave me a boarding pass for a different flight with no confirmation that they were changing it

The service from the flight attendants were of supreme quality. They greeted and treated everyone with a wide smile. This is totally absent nowadays. Kudos to them!!!!

Excellent flight and got us around tough weather. Only issue was seat TV did not work and crew tried to reboot.

Very large passenger too space from my own seat. Arm board couldn’t be lowered because of his size. It wads very uncomfortable trip, as the flight was full couldn’t move anywhere having back pain because of the position in which I was the entire flight.

was sitting in the jet bridge for 10 minutes in -20 degree weather waiting for my bag

Very convenient considering that is a non-stop flight, but the Aeromexico still has old model planes, so the entertainment was very poor and the space for carry-on luggage was very limited.

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