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Cheap flights from St. Louis to Buenos Aires from $463

This is the cheapest one-way 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 11/3. 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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Find the cheapest flights from St. Louis to Buenos Aires

Cheap round-trip flights

GOL Logo
4:21 pm - 12:20 pmSTL-EZE
16h 59m2 stops
GOL Logo
3:15 am - 10:32 pmEZE-STL
22h 17m2 stops
$1,001GOL
Find Deal
Tue, Nov 18 - Tue, Nov 25
LATAM Airlines Logo
9:00 am - 6:20 amSTL-EZE
18h 20m2 stops
LATAM Airlines Logo
7:43 pm - 10:05 amEZE-STL
17h 22m2 stops
$1,018LATAM Airlines
Find Deal
Tue, Nov 18 - Wed, Nov 26
Delta Logo
6:42 pm - 9:45 amSTL-EZE
13h 03m1 stop
Delta Logo
6:00 am - 10:04 pmEZE-STL
18h 04m2 stops
$1,025Delta
Find Deal
Mon, Sep 29 - Wed, Oct 15
Delta Logo
1:30 pm - 9:00 amSTL-EZE
16h 30m1 stop
Delta Logo
10:25 pm - 6:02 pmEZE-STL
22h 37m2 stops
$1,030Delta
Find Deal
Tue, Nov 18 - Wed, Nov 26
United Airlines Logo
6:15 am - 8:00 amSTL-EZE
23h 45m1 stop
United Airlines Logo
9:00 pm - 6:58 pmEZE-STL
23h 58m1 stop
$1,100United Airlines
Find Deal
Mon, Sep 15 - Mon, Sep 22
United Airlines Logo
6:15 am - 8:00 amSTL-EZE
23h 45m1 stop
United Airlines Logo
9:00 pm - 12:25 pmEZE-STL
17h 25m2 stops
$1,105United Airlines
Find Deal
Mon, Sep 15 - Mon, Sep 22
Logo
9:17 am - 5:45 amSTL-EZE
18h 28m2 stops
Logo
1:40 am - 6:23 pmEZE-STL
18h 43m2 stops
$1,122
Find Deal
Thu, Sep 4 - Thu, Sep 11
United Airlines Logo
6:15 am - 8:00 amSTL-EZE
23h 45m1 stop
United Airlines Logo
9:00 pm - 6:57 pmEZE-STL
23h 57m1 stop
$1,140United Airlines
Find Deal
Fri, Sep 12 - Wed, Oct 8
American Airlines Logo
1:21 pm - 8:55 amSTL-EZE
17h 34m2 stops
American Airlines Logo
8:30 pm - 3:45 pmEZE-STL
21h 15m2 stops
$1,145American Airlines
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Fri, Sep 12 - Wed, Oct 8
Logo
10:26 am - 7:30 pmSTL-EZE
31h 04m1 stop
Logo
2:30 am - 9:40 amEZE-STL
33h 10m2 stops
$1,211
Find Deal
Sat, Aug 23 - Tue, Sep 2

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 29
STL6:42 pmLambert-St Louis
13h 03m
1 stop
EZE9:45 amBuenos Aires Ministro Pistarini
Oct 15
EZE6:00 amBuenos Aires Ministro Pistarini
18h 04m
2 stops
STL10:04 pmLambert-St Louis
$1,025
Find similar
Delta
Nov 18
STL1:30 pmLambert-St Louis
16h 30m
1 stop
EZE9:00 amBuenos Aires Ministro Pistarini
Nov 26
EZE10:25 pmBuenos Aires Ministro Pistarini
22h 37m
2 stops
STL6:02 pmLambert-St Louis
$1,030
Find similar
Delta
Dec 8
STL4:00 pmLambert-St Louis
14h 00m
1 stop
EZE9:00 amBuenos Aires Ministro Pistarini
Dec 11
EZE4:05 amBuenos Aires Ministro Pistarini
22h 34m
2 stops
STL11:39 pmLambert-St Louis
$1,141
Find similar

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
Sep 15
STL6:15 amLambert-St Louis
23h 45m
1 stop
EZE8:00 amBuenos Aires Ministro Pistarini
Sep 22
EZE9:00 pmBuenos Aires Ministro Pistarini
23h 58m
1 stop
STL6:58 pmLambert-St Louis
$1,100
Find similar
United Airlines
Sep 15
STL6:15 amLambert-St Louis
23h 45m
1 stop
EZE8:00 amBuenos Aires Ministro Pistarini
Sep 22
EZE9:00 pmBuenos Aires Ministro Pistarini
17h 25m
2 stops
STL12:25 pmLambert-St Louis
$1,105
Find similar
United Airlines
Sep 12
STL6:15 amLambert-St Louis
23h 45m
1 stop
EZE8:00 amBuenos Aires Ministro Pistarini
Oct 8
EZE9:00 pmBuenos Aires Ministro Pistarini
23h 57m
1 stop
STL6:57 pmLambert-St Louis
$1,140
Find similar

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 August 2, 2025.
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

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Tue 11/18

4:21 pm-12:20 pm

2 stops16h 59m

Buenos Aires Ministro Pistarini

Tue 11/25

3:15 am-10:32 pm

2 stops22h 17m

$1,001

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Tue 11/18

9:00 am-6:20 am

2 stops18h 20m

Buenos Aires Ministro Pistarini

Wed 11/26

7:43 pm-10:05 am

2 stops17h 22m

$1,018

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Mon 9/29

6:42 pm-9:45 am

1 stop13h 03m

Buenos Aires Ministro Pistarini

Wed 10/15

6:00 am-10:04 pm

2 stops18h 04m

$1,025

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Tue 11/18

1:30 pm-9:00 am

1 stop16h 30m

Buenos Aires Ministro Pistarini

Wed 11/26

10:25 pm-6:02 pm

2 stops22h 37m

$1,030

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Mon 9/15

6:15 am-8:00 am

1 stop23h 45m

Buenos Aires Ministro Pistarini

Mon 9/22

9:00 pm-6:58 pm

1 stop23h 58m

$1,100

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Mon 9/15

6:15 am-8:00 am

1 stop23h 45m

Buenos Aires Ministro Pistarini

Mon 9/22

9:00 pm-12:25 pm

2 stops17h 25m

$1,105

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Thu 9/4

9:17 am-5:45 am

2 stops18h 28m

Buenos Aires Ministro Pistarini

Thu 9/11

1:40 am-6:23 pm

2 stops18h 43m

$1,122

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Fri 9/12

6:15 am-8:00 am

1 stop23h 45m

Buenos Aires Ministro Pistarini

Wed 10/8

9:00 pm-6:57 pm

1 stop23h 57m

$1,140

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Fri 9/12

1:21 pm-8:55 am

2 stops17h 34m

Buenos Aires Ministro Pistarini

Wed 10/8

8:30 pm-3:45 pm

2 stops21h 15m

$1,145

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Sat 8/23

10:26 am-7:30 pm

1 stop31h 04m

Buenos Aires Ministro Pistarini

Tue 9/2

2:30 am-9:40 am

2 stops33h 10m

$1,211

Flights are sorted by cheapest round-trip flights first.

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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 day to depart on your flight to Buenos Aires Ministro Pistarini Airport?

Our data shows that Tuesday is the least expensive day to fly to Buenos Aires Ministro Pistarini Airport. Tickets to fly out on this day can be as low as $1,023. Be sure to avoid booking your departure on a Wednesday as prices are generally higher than usual. According to our data, the average ticket price to Buenos Aires Ministro Pistarini Airport on Wednesday is $1,341.

What is the cheapest time of day to depart on your flight to Buenos Aires Ministro Pistarini Airport?

According to our data, the cheapest time of day to fly to Buenos Aires Ministro Pistarini Airport is in the evening. momondo users have found flights departing from St. Louis to Buenos Aires Ministro Pistarini Airport in the evening for as low as $1,188. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $1,287 on average. Flights to Buenos Aires Ministro Pistarini Airport from St. Louis at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

Best Price Found

$463

Fastest flight time

12h 45m

Direct flights

None
The best one-way flight to Buenos Aires Ministro Pistarini Airport from St. Louis in the past 72 hours is $463. The best round-trip flight deal from St. Louis to Buenos Aires Ministro Pistarini Airport found on momondo in the last 72 hours is $1,001.
The fastest flight from St. Louis to Buenos Aires Ministro Pistarini Airport takes 12h 45m
There are no direct flights from St. Louis to Buenos Aires Ministro Pistarini Airport. Popular non-direct route for this connection is Lambert-St Louis Airport - Buenos Aires Ministro Pistarini Airport.
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  • 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 12h 56m.

  • 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
DeltaPriceFrom $1,023Free CancellationRating
8.0
7,983 reviews
Search Delta flights
American AirlinesPriceFrom $1,025Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $1,053Free CancellationRating
7.4
8,904 reviews
Search United Airlines 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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