$391 Find Cheap Flights from St. Louis to Argentina

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Argentina departing on 11/3. 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 Argentina

Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 21% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flight Deals
Booking Insights
Flight Deals

Book Cheap St. Louis to Argentina Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Argentina 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 St. Louis to Argentina

Thu, Aug 13 - Wed, Aug 26
LATAM Airlines Logo
11:00 am - 9:45 am
STL
-
EZE
20h 45m
1 stop
LATAM Airlines Logo
8:10 pm - 9:54 am
EZE
-
STL
15h 44m
1 stop
$1,132LATAM Airlines
Mon, Aug 17 - Sun, Aug 23
LATAM Airlines Logo
6:00 am - 9:40 am
STL
-
EZE
25h 40m
2 stops
LATAM Airlines Logo
3:55 am - 11:58 pm
EZE
-
STL
22h 03m
2 stops
$1,146LATAM Airlines
Mon, Nov 16 - Mon, Nov 23
Delta Logo
4:13 pm - 4:00 pm
STL
-
AEP
20h 47m
2 stops
Delta Logo
5:35 pm - 10:48 am
AEP
-
STL
20h 13m
2 stops
$1,148Delta
Mon, Nov 16 - Mon, Nov 23
Delta Logo
12:00 pm - 10:55 am
STL
-
EZE
19h 55m
1 stop
Delta Logo
11:35 pm - 3:58 pm
EZE
-
STL
19h 23m
1 stop
$1,148Delta
Thu, Aug 13 - Wed, Aug 26
Delta Logo
11:00 am - 9:40 am
STL
-
EZE
20h 40m
2 stops
Delta Logo
8:10 pm - 11:46 am
EZE
-
STL
17h 36m
1 stop
$1,152Delta
Sun, Nov 15 - Wed, Nov 25
United Airlines Logo
5:55 pm - 7:20 am
STL
-
EZE
34h 25m
1 stop
United Airlines Logo
10:05 pm - 4:39 pm
EZE
-
STL
21h 34m
1 stop
$1,157United Airlines
Sun, Nov 15 - Wed, Nov 25
United Airlines Logo
5:55 pm - 7:20 am
STL
-
EZE
34h 25m
1 stop
United Airlines Logo
10:05 pm - 2:30 pm
EZE
-
STL
19h 25m
2 stops
$1,162United Airlines
Mon, Aug 10 - Mon, Aug 17
United Airlines Logo
6:14 am - 8:00 am
STL
-
EZE
23h 46m
1 stop
United Airlines Logo
9:00 pm - 2:15 pm
EZE
-
STL
19h 15m
1 stop
$1,163United Airlines
Mon, Aug 17 - Mon, Aug 24
Multiple Airlines Logo
8:55 am - 9:00 pm
STL
-
AEP
34h 05m
2 stops
Multiple Airlines Logo
7:00 am - 2:02 pm
AEP
-
STL
33h 02m
3 stops
$1,545Multiple Airlines
Thu, Aug 13 - Wed, Aug 26
Multiple Airlines Logo
12:10 pm - 9:30 pm
STL
-
AEP
31h 20m
3 stops
Multiple Airlines Logo
7:00 am - 2:02 pm
AEP
-
STL
33h 02m
3 stops
$1,547Multiple Airlines
Booking Insights

KAYAK's insights & trends for St. Louis to Argentina flights

Get data-powered insights and trends into flights from St. Louis to Argentina to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from St. Louis to Argentina?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from St. Louis to Argentina, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from St. Louis to Argentina is October, when tickets cost $829 (return) on average. On the other hand, the most expensive months are August and April, when the average cost of round-trip tickets is $1,365 and $1,314 respectively.

Good to know

Low seasonNovember
Cheapest flight$391
Best time to beat the crowds with an average 17% drop in price.
Most popular time to fly with an average 10% increase in price.
Flight from St. Louis to Buenos Aires Ministro Pistarini

FAQs - booking Argentina flights

  • How does KAYAK find such low prices on flights from St. Louis to Argentina?

    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 from St. Louis to Argentina.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from St. Louis to Argentina?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from St. Louis to Argentina is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from St. Louis to Argentina?

    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 from St. Louis to Argentina 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 from St. Louis to Argentina?

    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 from St. Louis to Argentina up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from St. Louis to Argentina

 
Need help choosing which airline to fly with from St. Louis to Argentina? 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.
7.8
DeltaOverall score based on 8451 reviews
7.8Comfort
7.2Food
7.8Entertainment
8.5Crew
8.1Boarding
Airline reviews

From checking to boarding, it was a seamless experience. The service agents were so helpful. The flight crew was so pleasant.

10.0 ExcellentPaula, Jun 2026
STL - ATL
Read more Delta reviews

From checking to boarding, it was a seamless experience. The service agents were so helpful. The flight crew was so pleasant.

Delta has too many delays now days. It is 1:06 am now. I was supposed to land in Norfolk at 10:30 pm. I got re-booked through Detroit and I’m still in Detroit. I hope to be landed in Norfolk by 3am. I’ve been in airports for 12 hours as of right now. There is a weather delay now but most delays lately have been maintenance.

This is the first time I've been disappointed with Delta. I was called by Delta to see if I would volunteer to change flights since my original flight home was overbooked. I accepted. The modified booking only provided me a 35 minute layover - when you subtract the fact that boarding closes for a flight 15 minutes early, that gave me 20 minutes to run for one end of the airport to the other. I barely made it. On the 2.5 hour flight to Tampa, the crew repeatedly let us know over the intercom that they cannot serve drinks or snacks due to safety/turbulence. I would have accepted this reason if they did not CONTINUALLY SERVE DRINKS AND COOKED FOOD to First class. If safety is the excuse then the entire plane should be strapped in for safety. On top of this the air conditioning vents were not working correctly and the plane was uncomfortably warm. I love Delta and am a loyal Delta traveler, and I have never had an experience like this. I don't know if there's a disconnect between availability among third-party sites like KAYAK and the airlines or what, but when overbooking causes issues like this for travelers it should be reviewed and changes to the booking process should be made. I blame BOTH KAYAK and Delta for this terrible experience.

Great flight with Delta! Boarding was quick and easy, the amenities were solid, and the plane was in great shape. The flight attendants had a fun, lively energy while staying professional. All in all, a smooth trip — even managed to catch up on some rest. Thanks, Delta!

My flight was canceled after being rescheduled for four days canceling my trip. Kayak and everyone affiliated with it I.e the airlines, and just fly have been excruciating to deal with. My trip to visit family had to be canceled as there was no way to make it. I am furious at all of you.

They delayed our flight because of bad weather in NY which was completely understandable. Then they cancelled our flight and a later flight that evening. The earliest we could fly was the next morning. We ended up buying last minute tickets on another airline and made it home slightly delayed but safely that evening. Delta kept saying it was weather related but if that was the case how did we make it back on another airline? The weather in NY was cloudy but not bad.

A regional sized plane was used for a cross country flight with no overhead bin space. I had to "pink check" my laptop and my medications. I was NOT pleased!!!!

I always fly with Delta. My friends tell me their horror stories of flying with other airlines. I just smile and say, “You should fly Delta”

The plane smelled like a sewer. Multiple passengers complained. It’s a safety and quality issue to clean these planes.

We were delayed 2 hours leaving STL. I had 20 mins from when we landed in SLC terminal A to make it to SLC terminal B. I had to actually run! thankfully I made my flight but 3/4 legs were delayed to some capacity.

Honestly first time flying with delta and it was pretty good. All the process very smooth and crew was always nice and attentive.

Deleted flight made me loose my connection flight now stuck in Atlanta for a day

Apart of Sky miles delta. And they go everywhere in Brazil

We traveled with two young children, and it was not possible for our family to be seated together. No one offered help or assistance to organize seating so we could sit with our kids. In the end, we managed to find two seats in Economy so I could at least sit with one of them, even though I had originally paid for Comfort+. In summary, I had to downgrade my seat just to be able to sit with one of my children, which was very disappointing

I booked a flight through Kayak to Brazil I have traveled to Brazil several times before Kayak Delta or LATAM never mentioned during the booking or in the pre flight process that the visa requirements to visit Brazil have changed earlier this year. I was unaware of this change and as such never got a visa and was unable to fly from JFK to Sao Paulo Add to this that Delta allowed me to fly from Boston to JFK which they should not have as I didn’t have a visa. It has been a terrible experience and a huge loss of money

Good flight, boarding ok and crew very nice. Flight was not full so I was able to be very comfortable. Blanket and pillow provided with was good as it was very cold during the flight . Food was very good(small snack sandwich and an excellent piece of orange cake). Overall good flight, no complaints.

Latam may be the worst airline in the world, far worse than even the lowest of low cost airlines in the USA. I wasted hours trying to PAY THEM TO CHECK A BAG! Then they misled me at the terminal, sent me through the wrong security line, the list goes on and on... Just absolutely terrible in every way. Avoid at all costs.

The flight was late. Please do not delay next time.

I couldn't travel, now I can't get a refund and to change the date I have to pay an absurd fine.

My biggest complaint is the comfort. I am not tall and there was no legroom. It was very uncomfortable. During my transfer in Sao Paola, the flight was slightly delayed so boarding was confusing because there were no instructions in English.

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

Information on your arrival and departure airports