$1,044 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 6/14. 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

Sun, Jun 14 - Tue, Jun 23
LATAM Airlines Logo
5:45 pm - 9:20 am
STL
-
EZE
37h 35m
2 stops
LATAM Airlines Logo
7:35 am - 11:38 pm
EZE
-
STL
18h 03m
2 stops
$1,044LATAM Airlines
Sun, Jun 14 - Tue, Jun 23
United Airlines Logo
8:15 pm - 8:00 am
STL
-
EZE
33h 45m
2 stops
United Airlines Logo
9:00 pm - 5:42 pm
EZE
-
STL
22h 42m
1 stop
$1,061United Airlines
Sun, Jun 14 - Tue, Jun 23
United Airlines Logo
6:30 pm - 8:00 am
STL
-
EZE
35h 30m
1 stop
United Airlines Logo
9:00 pm - 5:42 pm
EZE
-
STL
22h 42m
1 stop
$1,066United Airlines
Mon, May 4 - Mon, May 18
Multiple Airlines Logo
6:00 am - 4:30 am
STL
-
EZE
20h 30m
1 stop
Multiple Airlines Logo
1:10 pm - 5:33 pm
EZE
-
STL
30h 23m
2 stops
$1,082Multiple Airlines
Tue, May 26 - Wed, Jun 3
Air Canada Logo
1:00 pm - 2:30 pm
STL
-
EZE
47h 30m
3 stops
Air Canada Logo
4:35 pm - 8:25 pm
EZE
-
STL
53h 50m
3 stops
$1,125Air Canada
Tue, May 26 - Wed, Jun 3
LATAM Airlines Logo
5:15 pm - 9:45 am
STL
-
EZE
14h 30m
1 stop
LATAM Airlines Logo
8:10 pm - 9:44 am
EZE
-
STL
15h 34m
1 stop
$1,131LATAM Airlines
Mon, May 4 - Mon, May 18
Air Canada Logo
1:00 pm - 2:30 pm
STL
-
EZE
47h 30m
3 stops
Air Canada Logo
4:35 pm - 8:25 pm
EZE
-
STL
53h 50m
3 stops
$1,133Air Canada
Tue, May 26 - Wed, Jun 3
LATAM Airlines Logo
6:57 pm - 4:00 pm
STL
-
AEP
19h 03m
2 stops
LATAM Airlines Logo
5:35 pm - 12:20 pm
AEP
-
STL
20h 45m
2 stops
$1,139LATAM Airlines
Tue, May 26 - Tue, Jun 2
LATAM Airlines Logo
1:27 pm - 9:45 am
STL
-
EZE
18h 18m
1 stop
LATAM Airlines Logo
3:55 am - 11:59 pm
EZE
-
STL
22h 04m
2 stops
$1,139LATAM Airlines
Mon, May 4 - Tue, May 12
United Airlines Logo
4:44 pm - 8:00 am
STL
-
EZE
13h 16m
1 stop
United Airlines Logo
9:00 pm - 4:01 pm
EZE
-
STL
21h 01m
1 stop
$1,147United 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$1,044
Best time to beat the crowds with an average 17% drop in price.
Most popular time to fly with an average 9% 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 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 8292 reviews
8.1Boarding
8.5Crew
7.2Food
7.9Comfort
7.8Entertainment
Airline reviews

First class is comfortable. Enjoyed a movie and was able to relax compared to coach.

10.0 ExcellentAnonymous, Mar 2026
ATL - DTW
Read more Delta reviews

First class is comfortable. Enjoyed a movie and was able to relax compared to coach.

Loved flying First Class. Very comfortable. The seat was amazing. Enjoyed a movie and was able to relax so much better than in coach.

We landed and sat on the tarmac for 45 minutes because they only have one gate at the airport and there was another plane running late so we had to wait

The WiFi was not working. That made for a long flight.

With Aeromexico it ended up good but with Delta it was bad because we did everything through Delta... Showed up at the Delta terminal... It was the wrong place! Nothing ever told us to go to the Aeromexico terminal. It said "in partnership with Aeromexico" but I was never instructed to check in with them or go to their terminal. We had to haul @$$ running through the airport and almost didn't make it thanks to this poor communication. 👎🏽

Absolutely no communication on why there's a delay and multiple flight time reschedules. I would have canceled the flight and drove back home if I known it was going to be rescheduled 3 or 4 times.

Another late night flight and MORE men belligerently drinking and yelling. I had to move from first to economy because they were so obnoxious and disruptive. Crazy to go from a cozy chair to cardboard when you were supposed to be in first. Delta allows was too much drinking which leads to belligerent behavior.

I was in first class and literally the men behind me were so aggressively loud I moved myself to economy. This has become so common on Delta - people using audio without headphones, and men on 12am / late night flights drinking and yelling to talk to each other which prevents anyone around them from resting. Pretty crazy to have to move from first to economy (poorer service, less comfort...). Wild wild. Looking into other airlines.

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.

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 were not allowed to carry a bottle of water onto the 8 hour flight.

There was a mechanical issue with the plane that they had to work on before we could take off. That's fine, by all means, PLEASE make sure the mechanics are functioning properly. What was a problem was the fact that we sat on the tarmac for 4.5 hours without moving, without letting us off the plane, and without climate control and air running through the plane. There was no explanation as to what was going on; they just kept promising that it would be "15 minutes, then we are on our way." At one point, they even switched the entire crew out and told everyone we just needed to wait for new employees to show up. Then, as the 4 hours were not moving, an hour before the full refund, they made a big show about "the flight starting and the doors are locked, so you have to sit down." We didn't move for another 40 minutes; they were just trying to skirt around legalities that entitled us to restitution. When the flight finally was underway, the plane was gigantic but cramped in design, my entertainment screen kept freezing and glitching, and subtitles didn't work, and the crew was passive-aggressive. Terrible flight.

Comfort in exit seat was excellent. FLight crew and flight were excellent. However exit seat tray table was broken so could not use it. Entertainment monitor did not work at all despite attempts to reset it.

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.

Poor handling of carry on luggage. We had a 8 hour stop in Santiago, are over 70 and, in spite of paying full fare they wanted to send carry on to luggage hold. No empathy. We had to show that several group 4/5 passengers were not sending their carry ons before they finally let Is keep them. Very poor .

After changing the departure gate 5 times making us mo e from one side of the airport to the other and then back the flight was delayed nearly 2 hours. The male flight attendant had a bad attitude with the guest being condescending, disrespectful with people who were already on edge.

Easy boarding. Rows are smaller but that may be an older and bigger me now :)

It would have been nice if American tried to care.

American Airlines did everything they could with the high Spring Break crowd. I was frustrated to be changed from 1st class to a middle seat at the back of the plane. This has happened before, not sure booking 1st class and paying the extra actually works.

I booked 1st class, my flights were changed and I was sitting in the middle at the back of the plane. A far cry from the 1st class I purchased for my flights. I am grateful I arrived on time.

Aging planer and NO wifi on a 14 hour day flight. Unless you are retired or don't need to work or be in touch with the world... The lack of Wifif really ruined the flight. And the old plane - really showing it's age, wasn't great

There was no beverage service and the only time I saw a crew member walk through the cabin is when we were preparing to land.

Our flight was delayed 3 times and this is why I am giving such low reviews. Everything else was okay but being in the airport at 4:30pm for my initial flight at 7pm to not leave until after 9:30pm is insane,

Flights were constantly delayed. CRW took 50 minutes to get bags

Flight has been delayed every time I've ever taken it. Seats uncomfortable. Children behind me yelling the entire flight. Some of this is out of their control but overall just consistently not a great experience.

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

Information on your arrival and departure airports