$421 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 2/7. 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
$979
Typical prices: $1,283-$1,294
LATAM Airlines
Mon 6/1Mon 6/15
EZE - STL • 2 stops
Cheapest one-way
$461
Multiple Airlines
Sat 2/7
EZE - STL • 3 stops
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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

Mon, Jun 1 - Mon, Jun 15
LATAM Airlines Logo
7:45 am - 11:38 pm
EZE
-
STL
17h 53m2 stops
LATAM Airlines Logo
7:05 pm - 9:45 am
STL
-
EZE
12h 40m1 stop
$979LATAM Airlines
Fri, May 29 - Mon, Jun 15
Delta Logo
7:45 am - 10:45 am
EZE
-
STL
29h 00m2 stops
Delta Logo
5:30 pm - 9:45 am
STL
-
EZE
14h 15m1 stop
$1,013Delta
Mon, Jun 1 - Sun, Jun 14
LATAM Airlines Logo
7:45 am - 11:38 pm
EZE
-
STL
17h 53m2 stops
LATAM Airlines Logo
9:00 am - 9:45 am
STL
-
EZE
22h 45m1 stop
$1,022LATAM Airlines
Mon, Jun 1 - Mon, Jun 15
LATAM Airlines Logo
8:10 pm - 8:07 am
EZE
-
STL
13h 57m1 stop
LATAM Airlines Logo
7:05 pm - 9:45 am
STL
-
EZE
12h 40m1 stop
$1,029LATAM Airlines
Sat, May 30 - Mon, Jun 15
LATAM Airlines Logo
1:20 pm - 10:45 am
EZE
-
STL
23h 25m2 stops
LATAM Airlines Logo
7:05 pm - 9:45 am
STL
-
EZE
12h 40m1 stop
$1,053LATAM Airlines
Sun, May 31 - Sun, Jun 14
Delta Logo
8:10 pm - 8:07 am
EZE
-
STL
13h 57m1 stop
Delta Logo
9:00 am - 9:45 am
STL
-
EZE
22h 45m1 stop
$1,055Delta
Fri, May 29 - Sun, Jun 14
LATAM Airlines Logo
11:30 am - 10:45 am
EZE
-
STL
25h 15m2 stops
LATAM Airlines Logo
9:00 am - 9:45 am
STL
-
EZE
22h 45m1 stop
$1,064LATAM Airlines
Sat, May 30 - Sun, Jun 14
LATAM Airlines Logo
1:20 pm - 10:45 am
EZE
-
STL
23h 25m2 stops
LATAM Airlines Logo
9:00 am - 9:45 am
STL
-
EZE
22h 45m1 stop
$1,069LATAM Airlines
Mon, Jun 1 - Sat, Jun 13
LATAM Airlines Logo
8:10 pm - 8:07 am
EZE
-
STL
13h 57m1 stop
LATAM Airlines Logo
5:30 pm - 9:45 am
STL
-
EZE
14h 15m1 stop
$1,072LATAM Airlines
Mon, Jun 1 - Mon, Jun 15
Delta Logo
8:10 pm - 8:07 am
EZE
-
STL
13h 57m1 stop
Delta Logo
7:05 pm - 9:45 am
STL
-
EZE
12h 40m1 stop
$1,093Delta
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 07m.

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

There are around 346 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.

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Good to know

Low seasonSeptember
Cheapest flight$461
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 2,422 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 8011 reviews
8.1Boarding
8.5Crew
7.9Entertainment
7.3Food
7.9Comfort
Airline reviews

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!

4.0 OkayPenelope, Dec 2025
CUN - ATL
Read more Delta reviews

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

I noticed that the planes seem to be outdated. There was no entertainment per se. Also, the waiting area did not have any working electrical outlets

Original flight was cancelled and when i was rebooked by the airline, they couldn't seat me in the same type of seat as I had originally booked (went from window/aisle to middle/middle and one was a bulkhead seat, and other wasn't in the same class)

Lady Pilot was perfect in every way wheels up to wheels down communication, professionalism, excellent on time departure and on time arrival, excellent communication! Fantastic job with Superb attitude!!

The food is terrible. The staff is wonderful. Comfort is good.

For some reason, I couldn't choose my seat. The airline gave me a seat when I got there. Not happy about that. Otherwise, everything else was great!

Left on time, a bit delayed due to headwinds most of the trip.

I fly Delta all the time, have Platinum Medallion status. But this route seems to have major problems with delays and seems to never leave on time! Have only taken it twice in the last two weeks, and each time it had delays of more than 1 hour... very disappointed!!!!

Good seats in Main cabin, excellent service and excellent landing

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

St. Louis (STL)