$1,025 Find Cheap Flights from St. Louis to Argentina

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Argentina departing on 5/15. 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.
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Best Argentina Flight Deals from St. Louis

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

Buenos Aires
Buenos Aires2 stops$1,025

Cheap Flight Deals from St. Louis to Argentina (STL-AR0)

 
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.

Recent round-trip flight deals from St. Louis to Argentina

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from St. Louis to Argentina.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
7:06 pm - 5:00 pmSTL-AEP
19h 54m2 stops
3:40 pm - 10:38 amAEP-STL
20h 58m2 stops
$1,025LATAM Airlines
Find Deal
Thu, May 15 - Mon, Jul 28
6:20 pm - 8:55 amSTL-EZE
12h 35m1 stop
9:15 pm - 4:15 pmEZE-STL
21h 00m2 stops
$1,126American Airlines
Find Deal
Thu, May 15 - Mon, Jul 28
1:30 pm - 2:30 pmSTL-EZE
47h 00m3 stops
4:35 pm - 3:16 pmEZE-STL
24h 41m2 stops
$1,128Air Canada
Find Deal
Thu, May 15 - Mon, Jul 28
10:40 am - 8:00 amSTL-EZE
19h 20m2 stops
9:00 pm - 8:04 pmEZE-STL
25h 04m2 stops
$1,180United Airlines
Find Deal
Tue, Apr 1 - Tue, Apr 8
6:50 am - 9:45 amSTL-EZE
24h 55m2 stops
10:25 pm - 11:31 pmEZE-STL
27h 06m2 stops
$1,225Delta
Find Deal
Thu, Mar 20 - Fri, Mar 28
6:00 am - 9:00 amSTL-EZE
25h 00m1 stop
10:25 pm - 11:31 pmEZE-STL
27h 06m2 stops
$1,230Delta
Find Deal
Thu, Mar 20 - Fri, Mar 28
9:39 am - 3:20 pmSTL-EZE
27h 41m2 stops
2:45 pm - 9:58 amEZE-STL
21h 13m2 stops
$1,236
Find Deal
Fri, Apr 4 - Fri, Apr 18
11:00 am - 8:00 amSTL-EZE
19h 00m1 stop
9:00 pm - 3:47 pmEZE-STL
20h 47m2 stops
$1,250United Airlines
Find Deal
Fri, Apr 4 - Fri, Apr 18
1:30 pm - 2:30 pmSTL-EZE
47h 00m3 stops
4:35 pm - 3:42 pmEZE-STL
25h 07m3 stops
$1,349Air Canada
Find Deal
Thu, May 15 - Mon, Jul 28
8:25 am - 3:20 pmSTL-EZE
52h 55m2 stops
3:55 am - 11:29 pmEZE-STL
21h 34m2 stops
$1,392
Find Deal
Tue, Apr 1 - Mon, Apr 7

Good to know

Low season

July

High season

December

Cheapest flight

$1,025
Best time to beat the crowds but there is an average 1% increase in price.
Most popular time to fly with an average 4% increase in price.
Flight from St. Louis to Buenos Aires Jorge Newbery

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.

See more FAQs

Top tips for finding cheap flights to Argentina

  • High season is considered to be January, February and March. The cheapest month to fly from St. Louis is August.
  • Morning departure is around 39% cheaper than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

Top 4 airlines serving 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.
8.0
DeltaOverall score based on 8044 reviews
8.5Crew
8.2Boarding
8.0Comfort
7.9Entertainment
7.3Food
Airline reviews

Thank you for not flipping the plane on the run way. You guys get a 5 star rating for the flight!!!

10.0 Excellentjason, Mar 2025SFO - SEA
Read more Delta reviews

Thank you for not flipping the plane on the run way. You guys get a 5 star rating for the flight!!!

The crew was wonderful and attentive. The seats near exit row were restrictive. Offer healthy snacks please

Delta is a premier airline so my expectations are most always met.

Seats are much much more comfortable than United, which is what I usually fly

Zero updates from the pilots for 30 minutes in the tarmac

Boarding is, as it always is… horrible. Gate lice. Slow moving zones. Too many people with carry ons

I loved having a most black flight crew during Black History Month; rather by design or accident I appreciated the representation. ❤️

This was the second flight this week with flight attendant Marcus I’m not sure if his last name is Lane or Lang but this guy is awesome. He funny, attentive and his service is 5 stars. Marcus makes business travel more enjoyable !

Although the flight left late, we arrived early. It was one of the quickest boarding and off boarding experiences I’ve had. It was kind of annoying the only drinks they had were water, coffee, and tea. The flight was very smooth, temperature was just right, and flight attendants were friendly.

Rode in a smaller plane and short trip meant no snacks, no free wifi or tv. It was only 30min flight so honestly wasn’t a big deal to lack these items.

I liked everything, this was classed as premium economy but it was much better than Lufthansas business class. Lovely staff, comfortable plane and an excellent seat arrangement. A very pleasant surprise.

Everything was good except the check in. Could not do it online neither on the machines in the airport. Needed special assistance from the airline desk clerk

No entertainment but not expected. Unless you are referring to monitor that you can use. Then Al, was fine on all flights.

Friendly staff, It was the first flight out for our plane, so had to be deiced from the frost. Only delayed a few minutes,

Basic experience, we were delayed causing less time to enjoy our destination and on the way back, we boarded when the flight should have been taking off.

reliable, relatively relaxed, helpful and kind staff and clean airplanes. No need for more.

Only complaint is that the entertainment system wasn’t working on our seats and some others.

Very slow boarding, 1 hour late - uncomfortable chairs and crew barely speaking english even at the airport!

Great customer service, very accommodating. (Check in) Smooth flight, thank you Pilots. Only negative was one working bathroom in first class. Atlanta Base flight attendants were wonderful. Thank you for your smiling faces Delta..

Flight never happened because of previous flight delay. Sent back to the stays on a flight 10 hrs later without making to my final destination and still waiting full rugindo for it. So yeah not a good experience

Delays took 2hours and thirty minutes making me miss my connecting flight and make me sit in the Chicago airport for 9 hours

The flight was heavily booked so boarding was a lengthy process. The FA’s were rather abrupt during this process but became more gracious as the flight went on. Breakfast (puffed pastry and chewy sausage) was pretty horrible but there was fruit and yogurt which they didn’t mess up. Overall it was fine.

Had a short delay once we boarded the aircraft in Chicago, but it was fixed in no time flat then we were on our way. The pilot was able to make up the time lost and we landed 5 minute later then schedualed . Great service

All male crew was just too woke for me. I felt like a sardine. I will never take a window seat or the rearmost seat again. I booked early and did not pay for seat selection and that was a mistake. The security at IAH was atrocious. I was violated and radiated as I was in a hurry to connect to my other flight. I may have lost items under the seat in front of me that I couldn't see nor bend over to look.

Pilot Erika DeLong made us feel safe and at ease in a frankly scary time to be flying. Her warm smile and greeting and excellent command of the aircraft in foggy bumpy weather helped us all to calm our nerves and get us home safely.

I don’t understand the purpose of the orange “priority” tag on my bag. This tagged, my bag is last or near to the last bag to come down the carousel at IAH.

The tv monitor in front of my seat was not responding. The flight crew reset it and it still didn’t work.

The agents was very rude and they charged me $50 for a carry-on bag saying that it was too big and then I saw someone going on a plane with the same size bag as me

Liked nothing. As per previous segment it was delay delay delay.

Terrible. First of all we were delayed 4 3/4 hours departing Honolulu. As we had to leave our condo and the rental car had to be returned we had to go to the airport. Even though we had a business class boarding pass to Washington, since we did not have business class to Montreal we could not access the lounge without paying a $59 fee each. This does not make sense to us. Since we could not meet our original connection United booked us to Montreal via New York LaGuardia on Air Canada. In Washington a further delay got us into LaGuardia too late to make our connection to Montreal so we were booked on another Air Canada flight 3 hours later. We were originally scheduled to arrive in Montreal at 10:40 and arrived at 19:55. A totally exhausting day, United did not offer a meal voucher or any type of compensation. Air Canada did give us a digital meal voucher. The food in United business class is poor among all meals offered. The pods look nice but are not that confortable. Overall would not fly on United again.

The boarding crew was incredibly helpful getting me on an earlier flight

I didn’t like anything, being platinum pro get you absolutely nowhere and does not increase the customer service treatment whatsoever anymore. My flight was canceled and they put me on a flight eight hours later that would’ve got me back in the middle of the night. They could’ve easily move me up to an hour Prior on an earlier flight. My second flight was unreasonable to take, the third flight was also canceled due to mechanical issues like the first flight. I don’t know what’s going on with American, but they are falling apart, after seven flight changes I finally got home, Unreasonable.

Awkward carry on process. Forced to check all carry on. No overhead space of worthiness. Left delayed, but made up the time. Crew was amicable.

Standard. No different than a discount carrier on a short trip.

At least it was a short flight. Greyhound with wings.

They have lost any customer service care and support. Terrible airline now and been for awhile.

April was the flight attendant in first class and was the most pleasant, cordial and efficient person I have seen on a flight in years. Good example of the type of people AA should hire to increase customer satisfacdtion.

Everything was great. Boarding, early departure, early arrival, and deplaning were smooth. Smooth flight.

Two flight changes before the scheduled flight. On the day of the flight, the flight was delayed, which caused the connecting flight to be missed. Then, I was directed to another airport (CUN) and traveled to Tulum. American gave a $12 voucher for lunch. The least expensive item on the menu at a Mexican restaurant was $9.99. Driving to Tulum was a bad auto crash, and traffic was delayed two-plus hours. The bottom line is that we should have been at the hotel at noon, but it ended up at 11:30 PM.

The flight was delayed leaving Miami. When we arrived in Charlotte, we were unable to park at our scheduled gate. We had to wait another 30-45 minutes before we could park at a different gate. All in all, we were delayed by almost two hours arriving in Charlotte.

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