$638 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 2/23. 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

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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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

Thu, Oct 2 - Thu, Nov 13
Delta Logo
8:10 pm - 8:14 amEZE-STL
14h 04m1 stop
Delta Logo
11:44 am - 9:00 amSTL-EZE
18h 16m1 stop
$888Delta
Find Deal
Thu, Oct 2 - Thu, Nov 13
LATAM Airlines Logo
7:30 am - 11:24 pmEZE-STL
17h 54m2 stops
LATAM Airlines Logo
1:55 pm - 2:55 pmSTL-EZE
22h 00m2 stops
$897LATAM Airlines
Find Deal
Thu, Oct 2 - Thu, Nov 13
United Airlines Logo
9:00 pm - 12:28 pmEZE-STL
17h 28m2 stops
United Airlines Logo
8:20 am - 7:20 amSTL-EZE
20h 00m1 stop
$945United Airlines
Find Deal
Mon, Oct 6 - Mon, Nov 17
LATAM Airlines Logo
7:30 am - 8:05 amEZE-STL
26h 35m2 stops
LATAM Airlines Logo
9:21 am - 6:20 amSTL-EZE
17h 59m2 stops
$1,111LATAM Airlines
Find Deal
Mon, Oct 6 - Mon, Nov 17
LATAM Airlines Logo
5:30 am - 10:26 amEZE-STL
30h 56m2 stops
LATAM Airlines Logo
9:21 am - 5:55 amSTL-EZE
17h 34m2 stops
$1,113LATAM Airlines
Find Deal
Mon, Oct 6 - Mon, Nov 17
LATAM Airlines Logo
7:40 am - 8:05 amEZE-STL
26h 25m2 stops
LATAM Airlines Logo
6:00 am - 5:55 amSTL-EZE
20h 55m2 stops
$1,115LATAM Airlines
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Thu, Oct 2 - Thu, Nov 13
Multiple Airlines Logo
7:30 am - 3:18 pmEZE-STL
33h 48m3 stops
Multiple Airlines Logo
12:20 pm - 1:35 amSTL-EZE
34h 15m2 stops
$1,173Multiple Airlines
Find Deal
Thu, Oct 2 - Thu, Nov 13
Multiple Airlines Logo
7:30 am - 3:18 pmEZE-STL
33h 48m3 stops
Multiple Airlines Logo
12:20 pm - 12:35 amSTL-EZE
33h 15m3 stops
$1,251Multiple Airlines
Find Deal
Wed, Oct 1 - Thu, Nov 13
United Airlines Logo
9:00 pm - 2:27 pmEZE-STL
19h 27m2 stops
United Airlines Logo
6:15 am - 9:20 amSTL-EZE
24h 05m1 stop
$1,432United Airlines
Find Deal
Mon, Oct 27 - Wed, Nov 5
Air Canada Logo
4:45 pm - 3:29 pmEZE-STL
24h 44m2 stops
Air Canada Logo
6:43 pm - 3:10 pmSTL-EZE
41h 27m3 stops
$3,461Air Canada
Find Deal

Everything you should know

Cheapest round-trip
$888
Delta
Thu 10/2Thu 11/13
EZE - STL • 1 stop
Cheapest one-way
$638
Air Canada
Mon 2/23
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!
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 13h 55m.

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

There are around 343 direct flights from within Argentina to St. Louis every day. Most flights depart in the morning, with 6:00 am the most common departure time and 51% of flights departing in the morning.

Good to know

Low seasonMarch
Cheapest flight$638
Best time to beat the crowds with an average 21% drop in price.
Most popular time to fly and prices are also 20% 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 round-trip tickets can be as cheap as $958. On the other hand, the most expensive day to fly is Sunday, where round-trip 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 round-trip 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 2,400 direct flights from within Argentina to St. Louis. The most common day for departures is Sunday, with 16% 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 7957 reviews
7.9Comfort
7.9Entertainment
7.3Food
8.2Boarding
8.5Crew
Airline reviews

Awful. Flight from Cape Town was cancelled, rebooked for another day through Johannesburg, was downgraded to economy

4.0 OkayOlaf, Sep 2025JNB - ATL
Read more Delta reviews

Awful. Flight from Cape Town was cancelled, rebooked for another day through Johannesburg, was downgraded to economy

The staff and the boarding procedure were all amazing . The one flight was not equipped with WIFI which now adays seems odd. All in all the experience was good

Perfect flight both ways. On time, courteous staff, plane comfortable and cool. Best domestic flights I’ve had in awhile.

Really low quality food especially for an international flight. The crew also was surprisingly unpleasant except couple of ladies. I know we were not in first class but that’s no reason to treat customers as less.

Flight delayed for two and half hours and then canceled altogether due to mechanical issues. No mechanic onsite to fix so had to send one from LAX.

Crew was good. The reservation got mixed up and they didn't have my TSA number. I am also a Silver Medallion and wasn't able to use Sky Priority.

The airport crew helped a lot, what I didn’t like? We were not informed that we needed to pick our luggage’s, if the crew at the luggage center didn’t tell me I would have been home without my belongings, I was heading out to my next connecting flight while looking for what gate to go to, I asked one of the crews for help, he told me and he also told me to not forget to grab my luggage’s which was chocking, because on my way out the country that wasn’t required, I just hope none of your customers lost their luggage’s because of this.

Delta made it easy, comfortable and timely. The crew was fantastic.

This route with Delta always has delays or is cancelled. Aircrafts seem smaller and older. I fly Delta quite a bit - haven’t had issues with the international flights. But this route has always been the troublesome one

The flight crew was friendly. I tried to adjust my seat online ahead of time but no option existed without additional fees. My friend asked at the gate about a seat change and was able to make it happen. That was great! The flight crew moved a very tall gentleman and his companion which allowed us to have more space which was nice. Overall, good experience. Appreciated the blanket and pillow.

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
Glencoe
Shrewsbury

Everything you need to know for your flight to St. Louis

Information on the airport you'll fly into in St. Louis

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