STL - EZE

$406 Find Cheap Flights from St. Louis to Buenos Aires Ministro Pistarini

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 Buenos Aires departing on 3/16. 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 Buenos Aires Ministro Pistarini Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Buenos Aires, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Buenos Aires, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$992
American Airlines
Mon 3/30Mon 4/6
STL - EZE • 1 stop
Cheapest one-way
$406
Multiple Airlines
Mon 3/16
STL - EZE • 3 stops
Top airlines
American Airlines
Cheapest • from $992 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Buenos Aires!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from St. Louis to Buenos Aires (STL-EZE)

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

Mon, Mar 30 - Mon, Apr 6
American Airlines Logo
11:22 am - 6:20 am
STL
-
EZE
16h 58m
1 stop
American Airlines Logo
8:30 pm - 10:16 am
EZE
-
STL
15h 46m
1 stop
$992American Airlines
Mon, Mar 30 - Mon, Apr 6
American Airlines Logo
11:22 am - 6:20 am
STL
-
EZE
16h 58m
1 stop
American Airlines Logo
10:20 pm - 3:13 pm
EZE
-
STL
18h 53m
2 stops
$996American Airlines
Tue, May 5 - Thu, May 14
LATAM Airlines Logo
6:50 pm - 9:45 am
STL
-
EZE
12h 55m
1 stop
LATAM Airlines Logo
8:10 pm - 6:02 pm
EZE
-
STL
23h 52m
1 stop
$1,007LATAM Airlines
Tue, May 5 - Thu, May 14
LATAM Airlines Logo
6:50 pm - 9:45 am
STL
-
EZE
12h 55m
1 stop
LATAM Airlines Logo
8:10 pm - 9:36 am
EZE
-
STL
15h 26m
1 stop
$1,024LATAM Airlines
Tue, May 5 - Thu, May 14
Air Canada Logo
1:00 pm - 2:30 pm
STL
-
EZE
23h 30m
2 stops
Air Canada Logo
4:35 pm - 8:05 pm
EZE
-
STL
29h 30m
2 stops
$1,038Air Canada
Tue, May 5 - Thu, May 14
LATAM Airlines Logo
6:50 pm - 9:45 am
STL
-
EZE
12h 55m
1 stop
LATAM Airlines Logo
7:35 am - 11:59 pm
EZE
-
STL
18h 24m
2 stops
$1,039LATAM Airlines
Tue, May 5 - Thu, May 14
Air Canada Logo
1:00 pm - 2:30 pm
STL
-
EZE
47h 30m
3 stops
Air Canada Logo
4:35 pm - 8:05 pm
EZE
-
STL
29h 30m
2 stops
$1,046Air Canada
Mon, May 18 - Mon, May 25
LATAM Airlines Logo
5:15 pm - 11:30 am
STL
-
EZE
16h 15m
2 stops
LATAM Airlines Logo
8:10 pm - 12:20 pm
EZE
-
STL
18h 10m
1 stop
$1,047LATAM Airlines
Mon, May 18 - Mon, May 25
Multiple Airlines Logo
1:27 pm - 8:35 am
STL
-
EZE
17h 08m
2 stops
Multiple Airlines Logo
1:20 pm - 9:36 am
EZE
-
STL
22h 16m
2 stops
$1,051Multiple Airlines
Tue, May 5 - Thu, May 14
Air Canada Logo
1:00 pm - 2:30 pm
STL
-
EZE
47h 30m
3 stops
Air Canada Logo
4:35 pm - 8:05 pm
EZE
-
STL
53h 30m
3 stops
$1,059Air Canada
Booking Insights

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

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

Which airlines provide the cheapest flights from St. Louis to Buenos Aires Ministro Pistarini?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from St. Louis to Buenos Aires Ministro Pistarini were found on American Airlines ($992) and LATAM Airlines ($1,007).

Find deals

Good to know

Cheapest flight$406
Flight from St. Louis to Buenos Aires Ministro Pistarini

When to book flights from St. Louis to Buenos Aires

Are your dates flexible? Find out the best times to travel from St. Louis to Buenos Aires based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking St. Louis to Buenos Aires Ministro Pistarini flights

  • What is the cheapest flight from St. Louis to Buenos Aires Ministro Pistarini Airport?

    In the last 3 days, the lowest price for a flight from St. Louis to Buenos Aires Ministro Pistarini Airport was $406 for a one-way ticket and $992 for a round-trip.

  • Do I need a passport to fly between St. Louis and Buenos Aires Ministro Pistarini?

    A passport is required to fly from St. Louis to Buenos Aires Ministro Pistarini.

  • Which aircraft models fly most regularly from St. Louis to Buenos Aires Ministro Pistarini?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from St. Louis to Buenos Aires Ministro Pistarini?

    SkyTeam is the only airline alliance operating flights between St. Louis and Buenos Aires Ministro Pistarini.

  • How does KAYAK find such low prices on flights from St. Louis to Buenos Aires Ministro Pistarini?

    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 Buenos Aires Ministro Pistarini.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Buenos Aires Ministro Pistarini from 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 from St. Louis to Buenos Aires Ministro Pistarini?

    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 Buenos Aires Ministro Pistarini with an airline and back to St. Louis with another airline. Booking your flights between St. Louis and EZE can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from St. Louis to Buenos Aires Ministro Pistarini?

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

Reviews of the top airline flying from St. Louis to Buenos Aires

 
See real verified KAYAK customer reviews for airlines flying from St. Louis to Buenos Aires. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from St. Louis to Buenos Aires? 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 8204 reviews
8.1Boarding
7.9Comfort
7.2Food
7.8Entertainment
8.5Crew
Airline reviews

Everything I mentioned earlier - the airbus was more comfortable indeed and the experience was further enhanced.

10.0 ExcellentSoosnata, Feb 2026
LAX - HNL
Read more Delta reviews

Everything I mentioned earlier - the airbus was more comfortable indeed and the experience was further enhanced.

Delta continues to set the benchmark for traveler-friendly service with minimal disruption and clear communication within the mainland US (coast to coast). I am consistently pleased to be a Delta customer, and this experience once again met my expectations. There was a brief delay departing from MIA due to a technical issue that required the aircraft to return to the gate. However, the situation was handled professionally and transparently. Fortunately, my planned layover allowed ample buffer time, so the adjustment caused no stress. Overall, another smooth and reassuring experience.

Good experience and the flight landed early. There was no food I had or entertainment.

Flight was delayed and no reasons provided. After the passengers were boarded, the crew made announcement that the captain has jot arrived and he would take another 15 mins. All passengers patiently sat until the captain came and started. Terrible experience!

Flight was delayed. No information on why it was delayed. After we boarded the flight, , the crew made announcement that the captain hs not arrived and he will take 15 mins more to arrive. Passengers were just sitting patiently for the captain to arrive and start, Terrible experience.

Totally worth the miles to upgrade to Delta Comfort. Plenty of legroom.

This was my first time flying Delta ever and I had a great experience!

Smallest leg room I've ever had on a plane.

They took all carry-on luggage from Groups 6 -9 - I was group 5 and waiting in line to board - they made me check my luggage too. That then went to baggage claim and delayed departure from the airport. There was overhead room in my seating area - Delta over reacted. Also, had a gentleman next to me that took up 1/2 my seat.

Excellent!!! Aeromexico is a great airline. What was not that good is the service provided by Kayak. It is never clear and not easy to manage.

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

Information on your arrival and departure airports

St. Louis (STL)
Ministro Pistarini (EZE)