$966 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 4/15. 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
$966
American Airlines
Wed 4/15Fri 6/12
EZE - STL • 1 stop
Cheapest one-way
$1,026
LATAM Airlines
Tue 1/6
EZE - STL • 2 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

Wed, Apr 15 - Fri, Jun 12
American Airlines Logo
11:30 pm - 5:31 pmEZE-STL
20h 01m1 stop
American Airlines Logo
5:39 am - 7:15 amSTL-EZE
23h 36m1 stop
$966American Airlines
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Wed, Apr 15 - Fri, Jun 12
American Airlines Logo
11:30 pm - 5:13 pmEZE-STL
19h 43m2 stops
American Airlines Logo
7:25 am - 7:15 amSTL-EZE
21h 50m1 stop
$970American Airlines
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Tue, Apr 14 - Wed, Jun 10
United Airlines Logo
9:00 pm - 9:28 amEZE-STL
14h 28m1 stop
United Airlines Logo
8:50 am - 8:00 amSTL-EZE
21h 10m1 stop
$979United Airlines
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Wed, Apr 15 - Thu, Jun 11
LATAM Airlines Logo
1:20 pm - 10:45 amEZE-STL
23h 25m2 stops
LATAM Airlines Logo
6:00 am - 8:35 amSTL-EZE
24h 35m2 stops
$983LATAM Airlines
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Thu, Apr 16 - Wed, Jun 10
LATAM Airlines Logo
8:10 pm - 8:07 amEZE-STL
13h 57m1 stop
LATAM Airlines Logo
7:05 pm - 2:45 amSTL-EZE
29h 40m2 stops
$1,006LATAM Airlines
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Thu, Apr 16 - Wed, Jun 10
LATAM Airlines Logo
7:45 am - 11:38 pmEZE-STL
17h 53m2 stops
LATAM Airlines Logo
7:05 pm - 2:45 amSTL-EZE
29h 40m2 stops
$1,011LATAM Airlines
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Thu, Apr 16 - Wed, Jun 10
American Airlines Logo
11:30 pm - 9:35 pmEZE-STL
24h 05m1 stop
American Airlines Logo
12:09 pm - 7:35 amSTL-EZE
17h 26m2 stops
$1,020American Airlines
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Thu, Apr 16 - Fri, Jun 12
LATAM Airlines Logo
8:10 pm - 10:45 amEZE-STL
16h 35m1 stop
LATAM Airlines Logo
5:30 pm - 11:30 amSTL-EZE
16h 00m2 stops
$1,022LATAM Airlines
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Thu, Apr 16 - Sun, Jun 7
LATAM Airlines Logo
7:45 am - 11:38 pmEZE-STL
17h 53m2 stops
LATAM Airlines Logo
6:00 am - 8:35 amSTL-EZE
24h 35m2 stops
$1,026LATAM Airlines
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Wed, Apr 15 - Tue, Jun 9
United Airlines Logo
9:00 pm - 9:28 amEZE-STL
14h 28m1 stop
United Airlines Logo
6:15 am - 8:00 amSTL-EZE
23h 45m1 stop
$1,032United Airlines
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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 292 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 44% of flights departing in the morning.

Good to know

Low seasonSeptember
Cheapest flight$966
Best time to beat the crowds with an average 25% drop in price.
Most popular time to fly and prices are also 25% 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 2,042 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 8010 reviews
7.9Comfort
7.9Entertainment
8.5Crew
7.3Food
8.1Boarding
Airline reviews

My flight was cancelled with no explanation after I had already cleared security. I was given 4 options to rebook, only one being non-stop like I had paid for. I grabbed it. It was 4 plus hours later and then took off even later. Biggest complaint is that I booked early and had an aisle seat. They gave me a "window" seat in front of the exit row, so the seat did not decline. I weigh all of 103 #s and it was tight for me! For what I paid, I feel I was kind of ripped off. I think they should have given me the empty comfort seat for the inconvenience. There was no apology nor any explanation as to why the flight was cancelled. My guess is it benefitted Delta in some way.

6.0 GoodMary Heather, Nov 2025LGA - MKE
Read more Delta reviews

My flight was cancelled with no explanation after I had already cleared security. I was given 4 options to rebook, only one being non-stop like I had paid for. I grabbed it. It was 4 plus hours later and then took off even later. Biggest complaint is that I booked early and had an aisle seat. They gave me a "window" seat in front of the exit row, so the seat did not decline. I weigh all of 103 #s and it was tight for me! For what I paid, I feel I was kind of ripped off. I think they should have given me the empty comfort seat for the inconvenience. There was no apology nor any explanation as to why the flight was cancelled. My guess is it benefitted Delta in some way.

Very smooth, on-time, and pleasantly uneventful flight. The team at the gate and on board were professional and genuinely courteous. The pilot kept us well updated throughout, and both takeoff and landing were steady and enjoyable without any drama. Just a good, solid flight. Thank you! 💗

Staff was exceptional! Everyone was kind, professional and friendly making the trip very pleasant. Thank you!

No lunch on a x-country flight scheduled for 10:50 am departure, arrived 5+ hrs later. That requires a black box label before you pay for the tickets. Worst, when I checked in online, it's specifically said that lunch was served on his flight for economy Plus passengers.

We had a lot of really rough weather but that was not Delta's fault. Pilot was amazing.

One of the best airlines that I flew on, the flight attendants were very attentive and professional.

First, Delta needs more flights to/from Miami. Second, a 1000pm leaving at 1230pm is unacceptable from their biggest airport world hub. Another aircraft could have been used such as the aircraft scheduled to be used in the morning for that exact same route. Yes, I did get me there but the lack of sleep the next day didn't help me enjoy my entire trip since I was busy with activities during the weekend. This can be and is expected from Spirit (going bankrupt) and Frontier (despite they're nickel and dimers). But from Delta's World Hub? That's totally unacceptable!

This flight was straightforward and without difficulty. Service was OK, but I continue to be underwhelmed by level of attention given to Sky Priority passengers.

It would’ve been nice for all that money to have a more substantial snack for free. I remember once upon a time getting a very nice turkey sandwich with Swiss cheese on whole wheat bread for no charge along with a drink. I guess those days are gone. it’s a little insulting being given a cookie or a bag of baked chips Going forward I’ll just bring my own.

Our flight from SFO to MSP was right on time on 11/15/2025. No delays. As we approached MSP at about 8 pm, we circled in the air until 8:40 pm so I don't call that efficient for MSP. I think the captain should announce the delay and why. (as if we all don't know that we are just circling around the area, slowing down, speeding up, slowing down.) Thank you. Marilyn Fischer

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