$348 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 4/15. 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.
1 adult
1 adult, Economy, 0 bags

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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

Wed, Jun 17 - Wed, Jun 24
LATAM Airlines Logo
9:00 am - 9:45 am
STL
-
EZE
22h 45m
1 stop
LATAM Airlines Logo
8:10 pm - 8:07 am
EZE
-
STL
13h 57m
1 stop
$975LATAM Airlines
Wed, Jun 17 - Wed, Jun 24
LATAM Airlines Logo
5:30 pm - 6:30 pm
STL
-
AEP
23h 00m
2 stops
LATAM Airlines Logo
9:25 am - 10:45 am
AEP
-
STL
27h 20m
2 stops
$987LATAM Airlines
Wed, Jun 17 - Wed, Jun 24
LATAM Airlines Logo
11:51 am - 9:20 am
STL
-
EZE
19h 29m
2 stops
LATAM Airlines Logo
8:10 pm - 8:07 am
EZE
-
STL
13h 57m
1 stop
$1,013LATAM Airlines
Mon, Jun 15 - Wed, Jun 24
LATAM Airlines Logo
7:05 pm - 5:00 pm
STL
-
AEP
19h 55m
2 stops
LATAM Airlines Logo
9:25 am - 10:45 am
AEP
-
STL
27h 20m
2 stops
$1,019LATAM Airlines
Wed, Jun 17 - Wed, Jun 24
LATAM Airlines Logo
5:30 pm - 6:30 pm
STL
-
AEP
23h 00m
2 stops
LATAM Airlines Logo
7:20 pm - 8:07 am
AEP
-
STL
38h 47m
3 stops
$1,043LATAM Airlines
Wed, Jun 17 - Wed, Jun 24
LATAM Airlines Logo
1:30 pm - 9:00 pm
STL
-
EZE
29h 30m
2 stops
LATAM Airlines Logo
12:15 pm - 10:45 am
EZE
-
STL
24h 30m
2 stops
$1,057LATAM Airlines
Wed, Jun 24 - Tue, Jul 14
LATAM Airlines Logo
5:30 pm - 9:45 am
STL
-
EZE
14h 15m
1 stop
LATAM Airlines Logo
3:55 am - 11:38 pm
EZE
-
STL
21h 43m
2 stops
$1,062LATAM Airlines
Tue, May 26 - Wed, Jun 3
LATAM Airlines Logo
6:57 pm - 9:45 am
STL
-
EZE
12h 48m
1 stop
LATAM Airlines Logo
8:10 pm - 8:18 am
EZE
-
STL
14h 08m
1 stop
$1,071LATAM Airlines
Mon, May 4 - Tue, May 12
LATAM Airlines Logo
11:42 am - 9:45 am
STL
-
EZE
20h 03m
1 stop
LATAM Airlines Logo
8:10 pm - 12:20 pm
EZE
-
STL
18h 10m
1 stop
$1,073LATAM Airlines
Mon, May 4 - Tue, May 12
LATAM Airlines Logo
4:41 pm - 9:45 am
STL
-
EZE
15h 04m
1 stop
LATAM Airlines Logo
8:10 pm - 8:10 am
EZE
-
STL
14h 00m
1 stop
$1,074LATAM 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 September, when tickets cost $1,056 (return) on average. On the other hand, the most expensive months are November and June, when the average cost of round-trip tickets is $1,545 and $1,473 respectively.

Good to know

Low seasonJune
Cheapest flight$348
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 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.

Reviews of the top 3 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.
7.9
DeltaOverall score based on 8276 reviews
8.5Crew
8.1Boarding
7.8Entertainment
7.9Comfort
7.2Food
Airline reviews

Love delta smaller commuter plane so no entertainment and paid wifi on MKE-LGA leg was extremely unreliable and slow

8.0 ExcellentMary, Mar 2026
LGA - MKE
Read more Delta reviews

Love delta smaller commuter plane so no entertainment and paid wifi on MKE-LGA leg was extremely unreliable and slow

Stop changing gates. Stop cancelling flights Stop moving my seat.

Extremely disappointed with Delta. They canceled flight last minute and then I rebooked the other flights and with which were delayed as well

Could not get my connecting flight boarding pass until four hrs before departure! Ver annoying especially since the staff could not explain why!

The flight was flying with 30% capacity. The flight my seat from preferred seating to back of the seat. Even though i can understand that this was to balance the flight weight. The flight attendance decided to do the serving near my seat and in the middle , their noices woke me up from sleep , when i realized that the service has ended and when they were going back asked for a coffee, for which they answered they have completed teh service in my location. That really upset me as they woke me up and also rejected the coffee i asked. I ended up landing with a headache, thanks to the crew that screwed up my travel

Delayed. Hot. Passenger next to me was so large I couldn’t move.

Same experience as the flight from Norfolk to Atlanta where people are boarded in zones that don't make sense. People behind you on the plane will get on before you and they take the luggage space on your row.

The boarding process doesn't make sense since some people that will sit behind your rows are boarded before you and then they take up the luggage space above your head. I then have to wait for people to get off the plane before I can go back to get my luggage.

Good flight. Connector flight was delayed so made a short turnaround in Atlanta which was stressful. Otherwise, great crew, Staff in ATL was very informative about the delay and ensured people their connections were fine. Notified the ones that were not. Great communication.

The flight went very well, but the flight attendants didn't serve and food or drinks other than 1st class due to rough air but to be honest it wasn't that bumpy and I felt that they could've at least offered water and coffee perhaps. Also serving 1st class only is a bad look. I've been in 1st class many times and I would've felt that if the turbulence was too rough for the main cabin, it would be too rough for 1st class too.

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.

Wish the seats were a little more comfortable.. it was a 6 hrs nonstop trip. But the crew was courteous and w a smile

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 plane broke down at the Lima stopover and they offered to put me on a flight the be t day but I had to be back in LA that morning and so I had to buy another ticket from Avianca and United for $2k I asked LATAM for compensation and received none. Very bad experience

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.

The crew was excellent and overall the flight was good. No complaints.

I didn't end up taking this flight. I got up at 4am for a flight that was supposed to board at 6am - at 5:55am you delayed the flight to 10am. The airport is under construction so I switched to a later flight as I wasn't going to sit in the airport for 4 hours. They said the delay was due to the crew needing rest from a flight coming in late the night before - if that was the case then I think you should have delayed the flight much sooner so that passengers wouldn't get up so early and get to the airport to sit and wait.

Never had such a lazy first class attendant. Literally spent 60%+ of the flight playing games on her personal phone making up excuses of why she was unavailable.

The flight attendants and the service is getting worse by the day.

Not to have gotten delayed by 2+ hours for the fourth straight American flight. They're the worst.

Like all of the flights I took to get down to Dallas. They were delayed

Other than nearly three hour delay for maintenance issues, everything went smooth

Plane from partner PSA was filthy. Plastic needs to be thoroughly cleaned. Really disgusting to look at and wonder about cleanliness of parts less visible.

The baggage claim experience was poor. The plane crew and the AA app said that checked baggage in CLT would be at carousel 7 but the sign at Baggage Claim said carousel 1. The carousel 1 sign had the correct flight # listed above the belt. But the luggage never came. I went to an AA baggage claim office after about 1 hour and the clerk directed me to another AA room that was poorly marked, with a closed door and no obvious way to know what to do. Finally someone opened the door and my bag was inside. The clerk was totally unable to explain why.

They are rarely on time! Very hard to plan your travels when flights or connections keep getting delayed.

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

Information on your arrival and departure airports