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Cheap flights from St. Louis to Buenos Aires from $1,147

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Buenos Aires departing on 8/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from St. Louis to Buenos Aires

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
3:13 pm - 8:00 am
STL
-
EZE
14h 47m
1 stop
United Airlines Logo
9:00 pm - 10:10 am
EZE
-
STL
15h 10m
1 stop
$1,147United Airlines
Tue, Aug 11 - Tue, Aug 18
United Airlines Logo
11:10 am - 8:00 am
STL
-
EZE
18h 50m
1 stop
United Airlines Logo
9:00 pm - 10:07 am
EZE
-
STL
15h 07m
1 stop
$1,222United Airlines
Mon, Jul 6 - Mon, Jul 13
United Airlines Logo
9:20 am - 8:00 am
STL
-
EZE
20h 40m
2 stops
United Airlines Logo
9:00 pm - 10:07 am
EZE
-
STL
15h 07m
1 stop
$1,226United Airlines
Mon, Jul 6 - Mon, Jul 13
Delta Logo
6:45 pm - 9:45 am
STL
-
EZE
13h 00m
1 stop
Delta Logo
8:10 pm - 4:41 pm
EZE
-
STL
22h 31m
1 stop
$1,227Delta
Fri, Sep 18 - Fri, Sep 25
Delta Logo
4:59 pm - 9:40 am
STL
-
EZE
14h 41m
2 stops
Delta Logo
1:10 pm - 9:34 am
EZE
-
STL
22h 24m
2 stops
$1,231Delta
Fri, Sep 18 - Fri, Sep 25
LATAM Airlines Logo
5:23 pm - 9:40 am
STL
-
EZE
38h 17m
2 stops
LATAM Airlines Logo
7:35 am - 11:46 am
EZE
-
STL
30h 11m
3 stops
$1,234LATAM Airlines
Tue, Aug 11 - Tue, Aug 18
Multiple Airlines Logo
8:40 am - 3:40 pm
STL
-
EZE
29h 00m
3 stops
Multiple Airlines Logo
7:10 am - 12:21 pm
EZE
-
STL
31h 11m
3 stops
$1,329Multiple Airlines
Wed, Jun 10 - Tue, Jun 23
Multiple Airlines Logo
6:30 am - 2:35 am
STL
-
EZE
18h 05m
1 stop
Multiple Airlines Logo
2:49 pm - 11:49 pm
EZE
-
STL
35h 00m
2 stops
$1,340Multiple Airlines
Wed, Jun 10 - Tue, Jun 23
LATAM Airlines Logo
1:30 pm - 11:30 am
STL
-
EZE
20h 00m
2 stops
LATAM Airlines Logo
8:10 pm - 10:41 am
EZE
-
STL
16h 31m
1 stop
$1,343LATAM Airlines
Mon, Aug 31 - Thu, Sep 3
LATAM Airlines Logo
11:51 am - 9:40 am
STL
-
EZE
19h 49m
2 stops
LATAM Airlines Logo
7:35 am - 11:37 pm
EZE
-
STL
18h 02m
2 stops
$1,347LATAM Airlines
Mon, Aug 31 - Thu, Sep 3

Delta flights from St. Louis to Buenos Aires Ministro Pistarini Airport

Our best Delta deals on St. Louis to Buenos Aires Ministro Pistarini Airport flight tickets
Delta
Sep 18
STL6:45 pmLambert-St Louis
13h 00m
1 stop
EZE9:45 amBuenos Aires Ministro Pistarini
Sep 25
EZE8:10 pmBuenos Aires Ministro Pistarini
22h 31m
1 stop
STL4:41 pmLambert-St Louis
$1,227
Delta
Sep 18
STL4:59 pmLambert-St Louis
14h 41m
2 stops
EZE9:40 amBuenos Aires Ministro Pistarini
Sep 25
EZE1:10 pmBuenos Aires Ministro Pistarini
22h 24m
2 stops
STL9:34 amLambert-St Louis
$1,231

United Airlines flights from St. Louis to Buenos Aires Ministro Pistarini Airport

Our best United Airlines deals on St. Louis to Buenos Aires Ministro Pistarini Airport flight tickets
United Airlines
Aug 11
STL3:13 pmLambert-St Louis
14h 47m
1 stop
EZE8:00 amBuenos Aires Ministro Pistarini
Aug 18
EZE9:00 pmBuenos Aires Ministro Pistarini
15h 10m
1 stop
STL10:10 amLambert-St Louis
$1,147
United Airlines
Jul 6
STL11:10 amLambert-St Louis
18h 50m
1 stop
EZE8:00 amBuenos Aires Ministro Pistarini
Jul 13
EZE9:00 pmBuenos Aires Ministro Pistarini
15h 07m
1 stop
STL10:07 amLambert-St Louis
$1,222
United Airlines
Jul 6
STL9:20 amLambert-St Louis
20h 40m
2 stops
EZE8:00 amBuenos Aires Ministro Pistarini
Jul 13
EZE9:00 pmBuenos Aires Ministro Pistarini
15h 07m
1 stop
STL10:07 amLambert-St Louis
$1,226

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Buenos Aires Ministro Pistarini Airport that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated May 26, 2026.
Use the filters below to find and compare flights from St. Louis to Buenos Aires Ministro Pistarini Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Tue 8/11

3:13 pm-8:00 am

1 stop14h 47m

Buenos Aires Ministro Pistarini

Tue 8/18

9:00 pm-10:10 am

1 stop15h 10m

$1,147

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Mon 7/6

11:10 am-8:00 am

1 stop18h 50m

Buenos Aires Ministro Pistarini

Mon 7/13

9:00 pm-10:07 am

1 stop15h 07m

$1,222

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Mon 7/6

9:20 am-8:00 am

2 stops20h 40m

Buenos Aires Ministro Pistarini

Mon 7/13

9:00 pm-10:07 am

1 stop15h 07m

$1,226

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Fri 9/18

6:45 pm-9:45 am

1 stop13h 00m

Buenos Aires Ministro Pistarini

Fri 9/25

8:10 pm-4:41 pm

1 stop22h 31m

$1,227

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Fri 9/18

4:59 pm-9:40 am

2 stops14h 41m

Buenos Aires Ministro Pistarini

Fri 9/25

1:10 pm-9:34 am

2 stops22h 24m

$1,231

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Tue 8/11

5:23 pm-9:40 am

2 stops38h 17m

Buenos Aires Ministro Pistarini

Tue 8/18

7:35 am-11:46 am

3 stops30h 11m

$1,234

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Wed 6/10

8:40 am-3:40 pm

3 stops29h 00m

Buenos Aires Ministro Pistarini

Tue 6/23

7:10 am-12:21 pm

3 stops31h 11m

$1,329

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Wed 6/10

6:30 am-2:35 am

1 stop18h 05m

Buenos Aires Ministro Pistarini

Tue 6/23

2:49 pm-11:49 pm

2 stops35h 00m

$1,340

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Mon 8/31

1:30 pm-11:30 am

2 stops20h 00m

Buenos Aires Ministro Pistarini

Thu 9/3

8:10 pm-10:41 am

1 stop16h 31m

$1,343

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Mon 8/31

11:51 am-9:40 am

2 stops19h 49m

Buenos Aires Ministro Pistarini

Thu 9/3

7:35 am-11:37 pm

2 stops18h 02m

$1,347

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Buenos Aires from

How to get the cheapest flight ticket from St. Louis to Buenos Aires Ministro Pistarini Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between St. Louis and Buenos Aires Ministro Pistarini Airport?

What is the cheapest month to fly to Buenos Aires Ministro Pistarini Airport?

If you aren’t able to travel during the month of August, then book flights to Buenos Aires Ministro Pistarini Airport from St. Louis during April instead. Flights to Buenos Aires Ministro Pistarini Airport in April, while not as cheap as those in August, still average around $0.

When to book flights from St. Louis to Buenos Aires Ministro Pistarini Airport

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to Buenos Aires Ministro Pistarini Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap St. Louis to Buenos Aires Ministro Pistarini Airport (STL to EZE) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Buenos Aires Ministro Pistarini Airport

Fastest flight time

13h 00m

Direct flights

None
The fastest flight from St. Louis to Buenos Aires Ministro Pistarini Airport takes 13h 00m
There are no direct flights from St. Louis to Buenos Aires Ministro Pistarini Airport. There are no popular flight routes from St. Louis to Buenos Aires Ministro Pistarini Airport.
Search flight deals

Frequently asked questions about flying from St. Louis to Buenos Aires Ministro Pistarini Airport

  • How far is Lambert-St Louis to Buenos Aires Ministro Pistarini by plane?

    Buenos Aires Ministro Pistarini is 5460.2 mi away from Lambert-St Louis. A reasonable flight in good conditions will take 13h 00m.

  • When did momondo last update prices for flights from Lambert-St Louis Airport to Buenos Aires Ministro Pistarini Airport?

    Prices for flights from Lambert-St Louis Airport to Buenos Aires Ministro Pistarini Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Lambert-St Louis Airport to Buenos Aires Ministro Pistarini Airport?

  • How old do you have to be to fly from Lambert-St Louis Airport to Buenos Aires Ministro Pistarini Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Buenos Aires Ministro Pistarini Airport.

  • What documentation or ID do you need to fly to Buenos Aires Ministro Pistarini Airport?

    The necessary travel and health documents for your Buenos Aires Ministro Pistarini Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from St. Louis to Buenos Aires Ministro Pistarini Airport?

Best airlines flying from St. Louis to Buenos Aires Ministro Pistarini Airport

Compare and see reviews for airlines that fly from St. Louis to Buenos Aires Ministro Pistarini Airport with momondo
Airline
Rating
Free Cancellation
Price
LATAM AirlinesPriceFrom $884Free CancellationRating
7.4
1,921 reviews
Search LATAM Airlines flights
DeltaPriceFrom $1,025Free CancellationRating
7.9
8,426 reviews
Search Delta flights

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Buenos Aires?

Finding the right flight to Buenos Aires from St. Louis is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Buenos Aires quick and easy, saving you time and money.

Can I find flights from St. Louis to Buenos Aires with flexible booking policies on momondo?

Yes. All flights to Buenos Aires from St. Louis on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from St. Louis to Buenos Aires?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Buenos Aires from St. Louis.

I’m not ready to book a flight from St. Louis to Buenos Aires right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Buenos Aires from St. Louis. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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