STL - EZE

$434 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 4/13. 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
$1,087
Typical prices: $1,305-$1,264
Air Canada
Sun 9/27Mon 10/5
STL - EZE • 2 stops
Cheapest one-way
$434
Multiple Airlines
Mon 4/13
STL - EZE • 3 stops
Top airlines
Cheapest • from $1,087 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between St. Louis and Buenos Aires. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $1,298 (round-trip)
Shortest trip • 13h 32m (one-way)
Insights
Insights
Insights
Insights
Start a new search
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

Sun, Sep 27 - Mon, Oct 5
Air Canada Logo
12:10 pm - 2:30 pm
STL
-
EZE
24h 20m
2 stops
Air Canada Logo
4:35 pm - 6:41 pm
EZE
-
STL
52h 06m
3 stops
$1,087Air Canada
Wed, May 13 - Wed, May 20
Air Canada Logo
2:15 pm - 2:30 pm
STL
-
EZE
22h 15m
2 stops
Air Canada Logo
4:35 pm - 12:06 pm
EZE
-
STL
21h 31m
2 stops
$1,123Air Canada
Sun, Sep 27 - Mon, Oct 5
Air Canada Logo
12:10 pm - 2:30 pm
STL
-
EZE
24h 20m
2 stops
Air Canada Logo
4:35 pm - 6:41 pm
EZE
-
STL
28h 06m
2 stops
$1,128Air Canada
Thu, May 28 - Tue, Jun 9
LATAM Airlines Logo
7:01 pm - 9:45 am
STL
-
EZE
12h 44m
1 stop
LATAM Airlines Logo
8:10 pm - 9:46 am
EZE
-
STL
15h 36m
1 stop
$1,131LATAM Airlines
Thu, May 28 - Mon, Jun 8
LATAM Airlines Logo
7:01 pm - 9:45 am
STL
-
EZE
12h 44m
1 stop
LATAM Airlines Logo
3:55 am - 11:56 pm
EZE
-
STL
22h 01m
2 stops
$1,139LATAM Airlines
Thu, May 28 - Tue, Jun 9
LATAM Airlines Logo
10:49 am - 9:20 am
STL
-
EZE
20h 31m
2 stops
LATAM Airlines Logo
7:35 am - 11:56 pm
EZE
-
STL
18h 21m
2 stops
$1,143LATAM Airlines
Thu, May 28 - Tue, Jun 9
United Airlines Logo
8:35 am - 8:00 am
STL
-
EZE
21h 25m
1 stop
United Airlines Logo
9:00 pm - 10:07 am
EZE
-
STL
15h 07m
1 stop
$1,147United Airlines
Sun, Sep 27 - Mon, Oct 5
Air Canada Logo
12:10 pm - 2:30 pm
STL
-
EZE
24h 20m
3 stops
Air Canada Logo
4:35 pm - 6:41 pm
EZE
-
STL
52h 06m
3 stops
$1,149Air Canada
Thu, May 28 - Thu, Jun 11
Delta Logo
5:15 pm - 9:20 am
STL
-
EZE
14h 05m
2 stops
Delta Logo
10:40 pm - 2:52 pm
EZE
-
STL
18h 12m
2 stops
$1,151Delta
Wed, May 13 - Wed, May 20
Air Canada Logo
1:05 pm - 2:30 pm
STL
-
EZE
23h 25m
2 stops
Air Canada Logo
4:35 pm - 8:25 pm
EZE
-
STL
53h 50m
3 stops
$1,152Air 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 Air Canada ($1,087) and LATAM Airlines ($1,131).

Good to know

Low seasonJune
Cheapest flight$434
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

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 $404 for a one-way ticket and $1,087 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.

  • Which is the best airline for flights from St. Louis to Buenos Aires, Delta or LATAM Airlines?

    The two airlines most popular with KAYAK users for flights from St. Louis to Buenos Aires are Delta and LATAM Airlines. With an average price for the route of $1,295 and an overall rating of 7.9, Delta is the most popular choice. LATAM Airlines is also a great choice for the route, with an average price of $1,100 and an overall rating of 7.4.

  • 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 airlines 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 8365 reviews
7.2Food
7.9Comfort
8.5Crew
7.8Entertainment
8.1Boarding
Airline reviews

my mom urmila patel needed a wheelchair which was not available on the curbside. she needed to walk almost 50 meters inside (at the risk of falling) and then had to wait in line to get a wheelchair (this is not ok). Once obtained she had to seat in it for 30-45 minutes for someone to take her in thru the checkin process (which was fairly smooth and easy). the lady who helped her with her checkin process was very courteous and helpful

10.0 ExcellentViraj, Apr 2026
JFK - SFO
Read more Delta reviews

my mom urmila patel needed a wheelchair which was not available on the curbside. she needed to walk almost 50 meters inside (at the risk of falling) and then had to wait in line to get a wheelchair (this is not ok). Once obtained she had to seat in it for 30-45 minutes for someone to take her in thru the checkin process (which was fairly smooth and easy). the lady who helped her with her checkin process was very courteous and helpful

On the return flight, flight attendant Britt went out of her way to inform passengers that several of us had tight connections.

Fast, lovely scenery, great info on the Delta flight screen about landmarks we were flying over. Great landing!

Staff at the check-in counter were friendly, happy and helpful. They tagged our bags and sent us to “bag drop off” but were not very clear about where that was. The airport was busy we headed off in what we thought was the right direction until a gentleman waved us down and actually came after us. He was the baggage handler for Delta and recognized our “deer in the headlights “ look-he brought us to the right area (which was marked as the Southwest Airlines Drop Off) and sent us on our way. Wonderful guy, low key and working with a big smile on his face. Loved it. Loved him.

During the flight, the only refreshments provided were crackers and soft drinks; no substantial food was offered despite the international route. Furthermore, our initial flight was delayed, causing us to miss the connecting flight in Atlanta. The airline did not hold the connection, and we were informed that the next available flight is not for another 24 hours. While I am aware of alternative options via JetBlue, they operate out of JFK, which is not a viable solution for us as a resident of New Jersey.

Arlene was a great flight attendant. I also liked how one of the other flight attendants gave us a heads up about snacks and asked everyone to remove their headphones when it was their turn to order. Good idea.

Long flight but comfortable and not freezing as I have experienced on Hawaiian flights to the islands. They gave us blankets just in case. Nice touch.

I haven’t flown economy in over 20 years but it was not bad. Room by my feet for my bag and seat was roomy enough. Surprised in a good way.

The flight was delayed 90 minutes The Gate was wrong The Restroom on Aircraft was not clean There was a half used water bottle in my seat

Delta is always a wonderful experience. A clean plane and the crew is really friendly.

Honestly first time flying with delta and it was pretty good. All the process very smooth and crew was always nice and attentive.

Deleted flight made me loose my connection flight now stuck in Atlanta for a day

Good check in process Poor information on payments at Lima airport

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.

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 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.

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

Information on your arrival and departure airports