STL - EZE

$494 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 1/19. 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
$909
LATAM Airlines
Tue 3/3Tue 3/10
STL - EZE • 1 stop
Cheapest one-way
$494
Multiple Airlines
Mon 1/19
STL - EZE • 3 stops
Top airlines
LATAM Airlines
Cheapest • from $909 (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

Tue, Mar 3 - Tue, Mar 10
LATAM Airlines Logo
5:00 pm - 9:00 am
STL
-
EZE
13h 00m1 stop
LATAM Airlines Logo
8:55 pm - 5:53 pm
EZE
-
STL
22h 58m1 stop
$909LATAM Airlines
Sun, Mar 1 - Mon, Mar 16
Delta Logo
6:56 pm - 9:00 am
STL
-
EZE
35h 04m1 stop
Delta Logo
11:55 pm - 5:53 pm
EZE
-
STL
19h 58m1 stop
$926Delta
Tue, Mar 3 - Tue, Mar 10
Azul Logo
11:25 am - 7:20 am
STL
-
EZE
16h 55m2 stops
Azul Logo
9:05 pm - 9:21 am
EZE
-
STL
14h 16m1 stop
$936Azul
Tue, Mar 10 - Tue, Mar 24
United Airlines Logo
10:05 am - 8:20 am
STL
-
EZE
20h 15m1 stop
United Airlines Logo
9:05 pm - 9:21 am
EZE
-
STL
14h 16m1 stop
$937United Airlines
Tue, Mar 10 - Tue, Mar 24
Delta Logo
12:04 pm - 10:15 am
STL
-
EZE
20h 11m2 stops
Delta Logo
10:25 pm - 4:32 pm
EZE
-
STL
20h 07m2 stops
$941Delta
Sun, Mar 8 - Tue, Mar 17
LATAM Airlines Logo
12:04 pm - 9:00 am
STL
-
EZE
18h 56m1 stop
LATAM Airlines Logo
8:55 pm - 5:53 pm
EZE
-
STL
22h 58m1 stop
$976LATAM Airlines
Sun, Mar 8 - Tue, Mar 17
LATAM Airlines Logo
4:21 pm - 9:00 am
STL
-
EZE
14h 39m1 stop
LATAM Airlines Logo
8:55 pm - 5:53 pm
EZE
-
STL
22h 58m1 stop
$980LATAM Airlines
Sun, Mar 8 - Tue, Mar 17
LATAM Airlines Logo
4:21 pm - 7:20 am
STL
-
EZE
12h 59m1 stop
LATAM Airlines Logo
8:55 pm - 5:53 pm
EZE
-
STL
22h 58m1 stop
$982LATAM Airlines
Sun, Mar 8 - Tue, Mar 17
LATAM Airlines Logo
4:21 pm - 8:55 pm
STL
-
EZE
26h 34m2 stops
LATAM Airlines Logo
8:55 pm - 9:05 am
EZE
-
STL
14h 10m1 stop
$1,014LATAM Airlines
Thu, Apr 2 - Wed, Apr 22
LATAM Airlines Logo
6:59 pm - 9:45 am
STL
-
EZE
12h 46m1 stop
LATAM Airlines Logo
3:55 am - 11:33 pm
EZE
-
STL
21h 38m2 stops
$1,019LATAM Airlines
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 LATAM Airlines ($909) and Delta ($926).

Which airlines fly non-stop between St. Louis and Buenos Aires Ministro Pistarini Airport?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for round-trip flights from St. Louis to Buenos Aires Ministro Pistarini Airport.

There is just one airline that flies from St. Louis to Buenos Aires Ministro Pistarini Airport direct and that is Delta. The best round-trip deal found from Delta for the route is $1,025.

Find deals

Good to know

Cheapest flight$494
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 $494 for a one-way ticket and $909 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 8022 reviews
8.5Crew
7.2Food
8.1Boarding
7.8Entertainment
7.9Comfort
Airline reviews

Flight was late from Newark to Atlanta, I asked flight attendant to please let my family of 3 out first when we landed to Atlanta because we were late for our connecting flight to Quito. She didn't and we were late for 5 minutes we couldn't board the plane and spend hours trying to get another flight with customer service for the next day.

2.0 MediocreAnonymous, Jan 2026
EWR - ATL
Read more Delta reviews

Flight was late from Newark to Atlanta, I asked flight attendant to please let my family of 3 out first when we landed to Atlanta because we were late for our connecting flight to Quito. She didn't and we were late for 5 minutes we couldn't board the plane and spend hours trying to get another flight with customer service for the next day.

I really liked the legroom. I am 6’4”.a at For some reason our seats were not together and using the app to fix it didn’t work. Passengers were nice enough to move for us but you should absolutely ensure a parent sits with their child.

Late delayed flight delays boarding and delays leaving and delays on arrival too. Cramped plane no room no food.

DTW line is too long. The flights from DTW to BWI are always delayed for unknown reasons.

Delta canceled our flight and we had to scramble to find another airline to get home. Phoenix is not a delta hub so they didn’t have another plane. It would have been a red eye though Salt Lake City. Getting in at 5am. No bueno.

This flight was no comparison to our prior flight. I'm thinking it all has to do with the age of the aircraft.

This flight was a first class choice and left much to be desired. Seat backs on seats were falling apart and torn. Seats actually didn't come to a "full & upright position". Pull out table was sprung. Not any significant leg room. All in all we were on an obviously older plane and felt overcharged for what we received as first class.

A 12 hour flight during the day with one real meal service - are you kidding? Also the breakfast was one of the worst and not what was listed

Flight was delayed several times. At one point, they "pulled back" 15 minutes from the delayed boarding and sent a text saying we would board sooner than previously advised. The flight then was delayed again. And when we boarded, there was an unspecified technical issue which had us waiting in the plane for about an hour.

Delta is a good airline. I've never had an issue with Delta. I'll continue to fly with them until they show me that I shouldn't.

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)