$1,070 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 1/6. 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
$1,102
United Airlines
Wed 2/4Wed 2/11
EZE - STL • 1 stop
Cheapest one-way
$1,070
Multiple Airlines
Tue 1/6
EZE - STL • 1 stop
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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, Feb 4 - Wed, Feb 11
United Airlines Logo
10:05 pm - 9:22 am
EZE
-
STL
14h 17m1 stop
United Airlines Logo
6:00 am - 7:20 am
STL
-
EZE
22h 20m1 stop
$1,102United Airlines
Wed, Feb 4 - Wed, Feb 11
United Airlines Logo
10:05 pm - 9:22 am
EZE
-
STL
14h 17m1 stop
United Airlines Logo
9:57 am - 7:20 am
STL
-
EZE
18h 23m2 stops
$1,133United Airlines
Tue, Jan 20 - Thu, Feb 5
American Airlines Logo
10:25 pm - 7:29 pm
EZE
-
STL
24h 04m1 stop
American Airlines Logo
6:00 am - 8:25 am
STL
-
EZE
23h 25m1 stop
$1,201American Airlines
Tue, Jan 20 - Thu, Feb 5
American Airlines Logo
10:25 pm - 4:17 pm
EZE
-
STL
20h 52m1 stop
American Airlines Logo
1:35 pm - 9:10 am
STL
-
EZE
16h 35m2 stops
$1,205American Airlines
Tue, Jan 20 - Thu, Feb 5
Delta Logo
10:25 pm - 11:37 pm
EZE
-
STL
28h 12m2 stops
Delta Logo
6:00 am - 10:15 am
STL
-
EZE
25h 15m2 stops
$1,216Delta
Tue, Jan 20 - Wed, Feb 4
United Airlines Logo
11:55 pm - 3:52 pm
EZE
-
STL
18h 57m1 stop
United Airlines Logo
10:20 am - 7:20 am
STL
-
EZE
18h 00m1 stop
$1,225United Airlines
Wed, Apr 1 - Wed, Jun 10
LATAM Airlines Logo
7:35 am - 11:58 pm
EZE
-
STL
18h 23m2 stops
LATAM Airlines Logo
5:30 pm - 9:00 pm
STL
-
EZE
25h 30m2 stops
$1,228LATAM Airlines
Tue, Jan 20 - Wed, Feb 4
United Airlines Logo
10:05 pm - 4:03 pm
EZE
-
STL
20h 58m2 stops
United Airlines Logo
11:20 am - 7:20 am
STL
-
EZE
17h 00m2 stops
$1,229United Airlines
Wed, Apr 1 - Wed, Jun 10
LATAM Airlines Logo
7:35 am - 11:09 am
EZE
-
STL
29h 34m3 stops
LATAM Airlines Logo
11:51 am - 9:00 pm
STL
-
EZE
31h 09m2 stops
$1,231LATAM Airlines
Tue, Apr 7 - Thu, Jun 11
LATAM Airlines Logo
8:10 pm - 5:53 pm
EZE
-
STL
23h 43m1 stop
LATAM Airlines Logo
11:51 am - 8:35 am
STL
-
EZE
18h 44m2 stops
$1,233LATAM Airlines
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 14h 17m.

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

There are around 351 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 44% of flights departing in the morning.

Good to know

Low seasonSeptember
Cheapest flight$1,070
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 2,457 direct flights from within Argentina to St. Louis. The most common day for departures is Monday, with 18% 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 8014 reviews
7.9Comfort
8.5Crew
7.3Food
8.1Boarding
7.9Entertainment
Airline reviews

The plant way delayed departing by 3 hours. It was an old airplane with broken seats and armrests. The bathroom made a hollering sound. A really crappy flight experience and travel day all around.

2.0 MediocrePeter, Dec 2025
JFK - MEM
Read more Delta reviews

The plant way delayed departing by 3 hours. It was an old airplane with broken seats and armrests. The bathroom made a hollering sound. A really crappy flight experience and travel day all around.

Premium economy is like the forgotten class. Aside from meal service never saw a flight attendant. Any additional beverages required going to the very back of the plane to request and there was rarely an attendant there. Seat leg / foot rest hardly elevates and not well suite for someone under 5’6. Bulky armrests

Flight delays both to Detroits and return flight . The flight to Detroit was associated with mechanical difficulty

Flight was operated by Virgin Atlantic and it was up to their usual high standard. Minor grips about some issues, but they are really first world issues and as a whole, was an excellent flight.

I am extremely disappointed that delta internal pilot manuals now refer to the Gulf of Mexico as the “gulf of America”. You can bow down to the Orange turd on your own. I will never fly delta again

Delta One upgrade it would have been great if my tray extended (it was jammed and wouldn’t pull out), seatbelt had too much slack & my little cabin door didn’t close properly

I paid for a business class ticket on Delta. It was sourced to Virgin Atlantic. They changed out the aircraft which had fewer upper class tickets. Even though I'd checked into the lounge, was receiving alerts via kayak about the delay and changes; no one informed me that the seat would be changed - until I attempted to board and was told that I would have an economy seat or they could search to put me on another airline. Even the flight crew were informed of this change (10 passengers were bumped out of Upper Class) around 2 pm (1400) time. Hours would have helped to consider alternatives instead of making a last minute change. There needs to be compensation from both Delta and Virgin given this change in service/experience.

Wasn't a Delta issue I don't think, but seems there was a Delta flight at each of the 2 Dallas airports at the same exact time, both to Atlanta. I was evidently booked on the one at Love Airport, but the Carey transport shuttle took me to DFW instead and I ended up missing the flight by just a few minutes. Was able to book a Southwest flight from Love Airport, but was a big loss of time and an inconvenience.

Every single flight that we got on was delayed by several hours or more. I honestly didn’t think we would get out of Atlanta because our flight was supposed to leave at 7:59 and it kept getting kicked back further and further. Delta stands for Don’t Ever Leave The Airport!

Great. I had to modify a flight. That was easy and free. Thank You

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