STL - EZE

$331 Find Cheap Flights from St. Louis to Buenos Aires Ministro Pistarini - Compare and Save

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 11/1. 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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Everything you should know

Cheapest round-trip
$1,133
LATAM Airlines
Thu 1/14Thu 1/28
STL - EZE • 1 stop
Cheapest one-way
$331
Multiple Airlines
Sun 11/1
STL - EZE • 3 stops
Top airlines
Cheapest • from $1,133 (round-trip)
Best reviews • 7.8 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 $1,748 (round-trip)
Shortest trip • 13h 31m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 100% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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

Thu, Jan 14 - Thu, Jan 28
LATAM Airlines Logo
3:40 pm - 7:35 am
STL
-
EZE
12h 55m
1 stop
LATAM Airlines Logo
11:35 pm - 6:01 pm
EZE
-
STL
21h 26m
1 stop
$1,133LATAM Airlines
Thu, Jan 14 - Thu, Jan 28
LATAM Airlines Logo
3:40 pm - 6:20 am
STL
-
EZE
35h 40m
2 stops
LATAM Airlines Logo
7:20 am - 11:39 pm
EZE
-
STL
19h 19m
2 stops
$1,144LATAM Airlines
Tue, Dec 1 - Mon, Dec 14
Delta Logo
5:37 pm - 9:40 am
STL
-
EZE
13h 03m
1 stop
Delta Logo
8:05 pm - 3:54 pm
EZE
-
STL
22h 49m
1 stop
$1,148Delta
Tue, Dec 1 - Thu, Dec 17
Delta Logo
10:00 am - 6:20 am
STL
-
EZE
17h 20m
2 stops
Delta Logo
7:20 am - 9:33 pm
EZE
-
STL
17h 13m
2 stops
$1,148Delta
Wed, Dec 2 - Thu, Dec 17
American Airlines Logo
5:10 am - 7:25 am
STL
-
EZE
23h 15m
1 stop
American Airlines Logo
10:30 pm - 5:10 pm
EZE
-
STL
21h 40m
1 stop
$1,148American Airlines
Wed, Dec 2 - Thu, Dec 17
American Airlines Logo
4:36 pm - 10:15 am
STL
-
EZE
14h 39m
1 stop
American Airlines Logo
10:30 pm - 5:10 pm
EZE
-
STL
21h 40m
1 stop
$1,148American Airlines
Mon, Nov 30 - Thu, Dec 17
United Airlines Logo
11:00 am - 9:20 am
STL
-
EZE
19h 20m
1 stop
United Airlines Logo
11:55 pm - 4:44 pm
EZE
-
STL
19h 49m
1 stop
$1,148United Airlines
Tue, Dec 1 - Mon, Dec 14
LATAM Airlines Logo
10:00 am - 6:20 am
STL
-
EZE
17h 20m
2 stops
LATAM Airlines Logo
11:35 pm - 11:15 am
EZE
-
STL
14h 40m
1 stop
$1,148LATAM Airlines
Thu, Jan 14 - Thu, Jan 28
American Airlines Logo
9:44 am - 8:30 am
STL
-
EZE
19h 46m
1 stop
American Airlines Logo
10:30 pm - 2:47 pm
EZE
-
STL
19h 17m
1 stop
$1,148American Airlines
Thu, Jan 14 - Thu, Jan 28
United Airlines Logo
7:33 am - 7:20 am
STL
-
EZE
20h 47m
2 stops
United Airlines Logo
10:05 pm - 4:56 pm
EZE
-
STL
21h 51m
2 stops
$1,152United 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.

What is the cheapest month to fly from St. Louis to Buenos Aires Ministro Pistarini Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from St. Louis to Buenos Aires Ministro Pistarini Airport, 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 Buenos Aires Ministro Pistarini Airport is April, where tickets cost $0 (return) on average. On the other hand, the most expensive months are January and December, where the average cost of round-trip tickets is $1,646 and $1,460 respectively.

Good to know

Low season

November

Cheapest flight

$331
Best time to beat the crowds with an average 18% drop in price.
Most popular time to fly with an average 13% 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 5 days, the lowest price for a flight from St. Louis to Buenos Aires Ministro Pistarini Airport was $331 for a one-way ticket and $1,133 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?

    oneworld, and SkyTeam are the airline alliances operating flights between St. Louis and Buenos Aires Ministro Pistarini, with oneworld being the most commonly used for this route.

  • 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 $1,414 and an overall rating of 7.8, Delta is the most popular choice. LATAM Airlines is also a great choice for the route, with an average price of $1,173 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 3 airlines serving 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.
7.8
DeltaOverall score based on 8483 reviews
8.1Boarding
7.8Entertainment
8.5Crew
7.8Comfort
7.2Food
Airline reviews

Your survey needs a N/A option. I didn’t use the entertainment or eat food.

10.0 ExcellentJon, Jul 2026
MCI - SLC
Read more Delta reviews

Your survey needs a N/A option. I didn’t use the entertainment or eat food.

Flight was delayed multiple time and for more than 1 hr. My onward flight from BOS to MCI was also delayed. These delays have caused me so much inconvenience and Delta does nothing to ensure flights take off on time. No one knew why the inbound flight was delayed and what was the issue.

Our flight was delayed by over 4 hours due to a maintenance issue. They announced a new plane was on the way. We were given a $12 food voucher ( airport food is quite expensive You can’t even by a water and a small snack for 12:00. 4 hours later we boarded and landed in Atlanta at 10:20 ish pm. Of course we missed our connection and we were given a hotel voucher and another food voucher ! We didn’t make it home until 11:00 the next day ! Unacceptable

From checking to boarding, it was a seamless experience. The service agents were so helpful. The flight crew was so pleasant.

Great flight with Delta! Boarding was quick and easy, the amenities were solid, and the plane was in great shape. The flight attendants had a fun, lively energy while staying professional. All in all, a smooth trip — even managed to catch up on some rest. Thanks, Delta!

My flight was canceled after being rescheduled for four days canceling my trip. Kayak and everyone affiliated with it I.e the airlines, and just fly have been excruciating to deal with. My trip to visit family had to be canceled as there was no way to make it. I am furious at all of you.

They delayed our flight because of bad weather in NY which was completely understandable. Then they cancelled our flight and a later flight that evening. The earliest we could fly was the next morning. We ended up buying last minute tickets on another airline and made it home slightly delayed but safely that evening. Delta kept saying it was weather related but if that was the case how did we make it back on another airline? The weather in NY was cloudy but not bad.

The plane smelled like a sewer. Multiple passengers complained. It’s a safety and quality issue to clean these planes.

Dovevo prendere il volo da Atlanta a Buenos Aires alle 22 invece è stato sospeso senza nessun preavviso e rimandato al giorno dopo alle 9 del mattino, i parenti che mi attendevano all'aeroporto sono dovuti andare in albergo e non ho avuto nessun risarcimento danni. Ho mangiato al bar dell'aeroporto un piatto di d'insalata con 4 anelli di calamari col voucher di 30 dollari perché la cucina dell'albergo era chiusa ed ho dovuto pagarmi la bibita, 8 dollari per una birra, e anche la colazione del giorno dopo non compresa, deplorabile.

We were delayed 2 hours leaving STL. I had 20 mins from when we landed in SLC terminal A to make it to SLC terminal B. I had to actually run! thankfully I made my flight but 3/4 legs were delayed to some capacity.

4 hour delay. So our flight schedule mass up. Your worker told me you should rebooking myself. I was very angry. Latam Airline always get the money more through any way. But They have no concern passenger.

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

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.

My luggage was not sent with us. Not sure if this is Envoy Air responsibility but that was a very BAD experience

Overall fine. Seemed like one of the older model planes? Crew was mostly very kind, though some of the female attendants were a rather abrupt during the food service.

American delayed the flight for a crew rest period. The delay occurred late in the evening - the earliest i can find is 10:20 pm. With a 6 am flight anyone on the flight would have already have been asleep (unless you are insane, a vampire or on drugs) and at least for me i was already on the way to the airport at 445 am the next morning when i discovered they delayed the flight until 9 am. Given the incoming flight was in the air at 6 pm the evening before this should have been figured out a lot more timely that was there only crew to use. Just frustrating given there is no consideration for customer experience anymore in flying.

Good crew and flight was on time. It’s a small plane with limited overhead luggage space. They said the overhead space was full and I had to check my bag. There was still space when I got on. Waiting for my checked luggage added 30 minutes to my trip. Not the end of the world but also not great.

Trip delayed for 2 hours because of rain. We boarded and have to get down the flight and reboard again.

No enough space plus only allowing one laggage instead of two like other airlines.

Qatar airways ,boarding arrangements at Hamid international airport could been better

I don’t know who decides what food to serve on these flights but I would be so embarrassed if I served this to anyone and call it food…

The food was horrible compared to other airlines, there was no space for the overhead bins for carry-on luggage, and the seats were very uncomfortable.

The preferred seats where awful. Impossible to use them again

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

Information on your arrival and departure airports