$441 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 12/10. 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
$970
Typical prices: $1,143-$1,149
American Airlines
Tue 4/7Thu 6/11
EZE - STL • 1 stop
Cheapest one-way
$441
Multiple Airlines
Wed 12/10
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
American Airlines Logo
11:30 pm - 9:35 pmEZE-STL
24h 05m1 stop
American Airlines Logo
10:35 am - 7:35 amSTL-EZE
19h 00m2 stops
$970American Airlines
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Wed, Apr 8 - Thu, Jun 11
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
$979United Airlines
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Wed, Apr 8 - Fri, Jun 12
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
$1,022United Airlines
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Tue, Apr 7 - Thu, Jun 11
American Airlines Logo
11:30 pm - 9:35 pmEZE-STL
24h 05m1 stop
American Airlines Logo
5:25 am - 7:35 amSTL-EZE
24h 10m1 stop
$1,028American Airlines
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Tue, Dec 23 - Tue, Dec 30
Delta Logo
11:55 pm - 4:28 pmEZE-STL
19h 33m1 stop
Delta Logo
5:13 pm - 9:00 amSTL-EZE
12h 47m1 stop
$1,079Delta
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Sun, Apr 5 - Mon, Jun 8
Delta Logo
3:55 am - 11:40 pmEZE-STL
21h 45m2 stops
Delta Logo
7:05 pm - 9:45 amSTL-EZE
12h 40m1 stop
$1,102Delta
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Thu, Apr 9 - Tue, Jun 9
Air Canada Logo
4:35 pm - 3:24 pmEZE-STL
24h 49m2 stops
Air Canada Logo
1:30 pm - 2:30 pmSTL-EZE
23h 00m2 stops
$1,217Air Canada
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Thu, Apr 16 - Mon, Jun 15
Air Canada Logo
4:35 pm - 3:24 pmEZE-STL
24h 49m2 stops
Air Canada Logo
1:30 pm - 2:30 pmSTL-EZE
47h 00m3 stops
$1,223Air Canada
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Tue, Dec 23 - Tue, Dec 30
LATAM Airlines Logo
12:15 pm - 4:28 pmEZE-STL
31h 13m2 stops
LATAM Airlines Logo
6:00 am - 6:20 amSTL-EZE
21h 20m2 stops
$1,272LATAM Airlines
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Wed, Apr 15 - Mon, Jun 15
LATAM Airlines Logo
3:55 am - 8:07 amEZE-STL
30h 12m2 stops
LATAM Airlines Logo
11:51 am - 11:27 pmSTL-EZE
33h 36m2 stops
$1,326LATAM 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 15h 34m.

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

There are around 290 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 seasonMarch
Cheapest flight$441
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 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 2,025 direct flights from within Argentina to St. Louis. The most common day for departures is Monday, 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 8004 reviews
7.9Comfort
7.3Food
7.9Entertainment
8.1Boarding
8.5Crew
Airline reviews

Flight delayed then cancelled. Misplaced luggage. Still do not have. Rented car 1100 mile drive. I had to buy some overnight Hotels clothes toiletries gas food at my expense. Still not home. Not sure where luggage is. Over 4 hours on hold to Felta

2.0 MediocreAnonymous, Nov 2025MOB - ATL
Read more Delta reviews

Flight delayed then cancelled. Misplaced luggage. Still do not have. Rented car 1100 mile drive. I had to buy some overnight Hotels clothes toiletries gas food at my expense. Still not home. Not sure where luggage is. Over 4 hours on hold to Felta

I truly love flying with Delta. They have always treated me with the upmost respect

Our flight attendant in FIRST CLASS was one of the worst I’ve ever had. She was not at all pleasant, nor particularly good at her service.

Everything went well and was good. Nothing exceptional, but no complaints either. Cheap seats are pretty comfortable.

DELTA does a terrific job making sure you are well taken care of during the flight, gives you assurance before the flight through numerous email notifications about your upcoming flight & lastly good follow up after the flight making sure your needs were mat. It has been, is & will continue to be my carrier of choice in all my future travels. Good Job DELTA

Staff were friendly and happy. Delta could make sure passengers that don't have the app know of changes. Without Kayak I would not have known about the change of gate or the delay. Kayak was faster to notify me.

They ended up paying for the bag twice, but the counter wouldn't take my baggage receipt. Left it to me to resolve. Not sure how to resolve the issue.

The customer service before board was very rude and when I expressed my concerns about making the connecting flight she laughed and told me I bought the wrong ticket. I explained once it showed the flight was delayed it no longer let me change seats or anything. I was trying to upgrade to make sure I would get to the next gate on time.

Non stop on long haul is the way to go. Great experience

Seats comfortable, service and food very mediocre, staff not very attentive, worse than many other our flights with Delta.

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