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Cheap flights from St. Louis to Buenos Aires from $549

1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from St. Louis to Buenos Aires

Cheap round-trip flights

Enter your travel dates to find the best prices.
LATAM Airlines Logo
11:51 am - 7:40 amSTL  Lambert-St Louis-AEP Buenos Aires Jorge Newbery
17h 49m2 stops Atlanta Hartsfield-Jackson Lima J Chavez Intl
LATAM Airlines Logo
5:35 pm - 10:48 amAEP  Buenos Aires Jorge Newbery-STL Lambert-St Louis
19h 13m2 stops Lima J Chavez Intl Atlanta Hartsfield-Jackson
$1,308LATAM Airlines
Fri, Mar 19 - Thu, Apr 8
LATAM Airlines Logo
3:40 pm - 4:00 pmSTL  Lambert-St Louis-AEP Buenos Aires Jorge Newbery
22h 20m2 stops Atlanta Hartsfield-Jackson Lima J Chavez Intl
LATAM Airlines Logo
5:35 pm - 10:48 amAEP  Buenos Aires Jorge Newbery-STL Lambert-St Louis
19h 13m2 stops Lima J Chavez Intl Atlanta Hartsfield-Jackson
$1,348LATAM Airlines
Sun, Mar 28 - Sat, Apr 10
LATAM Airlines Logo
6:00 am - 7:40 amSTL  Lambert-St Louis-AEP Buenos Aires Jorge Newbery
22h 40m2 stops Atlanta Hartsfield-Jackson Lima J Chavez Intl
LATAM Airlines Logo
5:35 pm - 1:43 pmAEP  Buenos Aires Jorge Newbery-STL Lambert-St Louis
23h 08m2 stops Lima J Chavez Intl Atlanta Hartsfield-Jackson
$1,358LATAM Airlines
Wed, Feb 24 - Sat, Mar 13
LATAM Airlines Logo
2:33 pm - 9:40 amSTL  Lambert-St Louis-AEP Buenos Aires Jorge Newbery
16h 07m2 stops Atlanta Hartsfield-Jackson Sao Paulo Guarulhos Intl
LATAM Airlines Logo
2:55 pm - 9:01 amAEP  Buenos Aires Jorge Newbery-STL Lambert-St Louis
21h 06m2 stops Rio de Janeiro–Galeão Intl Atlanta Hartsfield-Jackson
$1,378LATAM Airlines
Thu, Dec 3 - Sun, Dec 13
Delta Logo
10:06 am - 7:40 amSTL  Lambert-St Louis-AEP Buenos Aires Jorge Newbery
18h 34m2 stops Atlanta Hartsfield-Jackson Lima J Chavez Intl
Delta Logo
5:35 pm - 11:29 amAEP  Buenos Aires Jorge Newbery-STL Lambert-St Louis
20h 54m2 stops Lima J Chavez Intl Atlanta Hartsfield-Jackson
$1,408Delta
Fri, Dec 4 - Fri, Dec 11
Delta Logo
9:00 am - 7:40 amSTL  Lambert-St Louis-AEP Buenos Aires Jorge Newbery
19h 40m2 stops Atlanta Hartsfield-Jackson Lima J Chavez Intl
Delta Logo
5:35 pm - 2:43 pmAEP  Buenos Aires Jorge Newbery-STL Lambert-St Louis
23h 08m2 stops Lima J Chavez Intl Atlanta Hartsfield-Jackson
$1,443Delta
Wed, Mar 10 - Sat, Mar 20
LATAM Airlines Logo
2:31 pm - 10:30 amSTL  Lambert-St Louis-AEP Buenos Aires Jorge Newbery
16h 59m2 stops Atlanta Hartsfield-Jackson Sao Paulo Guarulhos Intl
LATAM Airlines Logo
2:55 pm - 9:01 amAEP  Buenos Aires Jorge Newbery-STL Lambert-St Louis
21h 06m2 stops Rio de Janeiro–Galeão Intl Atlanta Hartsfield-Jackson
$1,444LATAM Airlines
Sat, Nov 28 - Thu, Dec 10
Delta Logo
3:40 pm - 12:00 pmSTL  Lambert-St Louis-AEP Buenos Aires Jorge Newbery
18h 20m2 stops Atlanta Hartsfield-Jackson Sao Paulo Guarulhos Intl
Delta Logo
5:35 pm - 2:43 pmAEP  Buenos Aires Jorge Newbery-STL Lambert-St Louis
23h 08m2 stops Lima J Chavez Intl Atlanta Hartsfield-Jackson
$1,483Delta
Sat, Mar 20 - Wed, Mar 24
LATAM Airlines Logo
10:06 am - 7:40 amSTL  Lambert-St Louis-AEP Buenos Aires Jorge Newbery
18h 34m2 stops Atlanta Hartsfield-Jackson Lima J Chavez Intl
LATAM Airlines Logo
2:55 pm - 9:01 amAEP  Buenos Aires Jorge Newbery-STL Lambert-St Louis
21h 06m2 stops Rio de Janeiro–Galeão Intl Atlanta Hartsfield-Jackson
$1,496LATAM Airlines
Sun, Dec 6 - Sun, Dec 13
LATAM Airlines Logo
5:38 pm - 6:30 pmSTL  Lambert-St Louis-AEP Buenos Aires Jorge Newbery
21h 52m2 stops Atlanta Hartsfield-Jackson Lima J Chavez Intl
LATAM Airlines Logo
5:35 pm - 9:00 amAEP  Buenos Aires Jorge Newbery-STL Lambert-St Louis
18h 25m2 stops Lima J Chavez Intl Atlanta Hartsfield-Jackson
$1,501LATAM Airlines
Mon, Nov 2 - Mon, Nov 16

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LATAM Airlines flights from St. Louis to Buenos Aires Jorge Newbery Airport

Our best LATAM Airlines deals on St. Louis to Buenos Aires Jorge Newbery Airport flight tickets
LATAM Airlines
Dec 3
STL2:33 pmLambert-St Louis
16h 07m
2 stops
AEP9:40 amBuenos Aires Jorge Newbery
Dec 13
AEP2:55 pmBuenos Aires Jorge Newbery
21h 06m
2 stops
STL9:01 amLambert-St Louis
$1,378
LATAM Airlines
Nov 28
STL2:31 pmLambert-St Louis
16h 59m
2 stops
AEP10:30 amBuenos Aires Jorge Newbery
Dec 10
AEP2:55 pmBuenos Aires Jorge Newbery
21h 06m
2 stops
STL9:01 amLambert-St Louis
$1,444
LATAM Airlines
Nov 2
STL5:38 pmLambert-St Louis
21h 52m
2 stops
AEP6:30 pmBuenos Aires Jorge Newbery
Nov 16
AEP5:35 pmBuenos Aires Jorge Newbery
18h 25m
2 stops
STL9:00 amLambert-St Louis
$1,501

Delta flights from St. Louis to Buenos Aires Jorge Newbery Airport

Our best Delta deals on St. Louis to Buenos Aires Jorge Newbery Airport flight tickets
Delta
Dec 3
STL2:33 pmLambert-St Louis
16h 07m
2 stops
AEP9:40 amBuenos Aires Jorge Newbery
Dec 10
AEP3:50 pmBuenos Aires Jorge Newbery
20h 11m
2 stops
STL9:01 amLambert-St Louis
$1,348
Delta
Dec 4
STL10:06 amLambert-St Louis
18h 34m
2 stops
AEP7:40 amBuenos Aires Jorge Newbery
Dec 11
AEP5:35 pmBuenos Aires Jorge Newbery
20h 54m
2 stops
STL11:29 amLambert-St Louis
$1,408
Delta
Dec 9
STL10:06 amLambert-St Louis
18h 34m
2 stops
AEP7:40 amBuenos Aires Jorge Newbery
Jan 11
AEP5:35 pmBuenos Aires Jorge Newbery
20h 13m
2 stops
STL10:48 amLambert-St Louis
$1,571

momondo Fare Finder

 
Use the filters below to find and compare flights from St. Louis to Buenos Aires Jorge Newbery Airport that are best for you.

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Route

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Price

Cheapest round-trip
Quickest round-trip

St. LouisBuenos Aires

STL Lambert-St Louis - AEP Buenos Aires Jorge Newbery

STLAEP

Lambert-St Louis

Fri 3/19

11:51 am-7:40 am

2 stops17h 49m

Buenos Aires Jorge Newbery

Thu 4/8

5:35 pm-10:48 am

2 stops19h 13m

$1,308

St. LouisBuenos Aires

STL Lambert-St Louis - AEP Buenos Aires Jorge Newbery

STLAEP

Lambert-St Louis

Sun 3/28

3:40 pm-4:00 pm

2 stops22h 20m

Buenos Aires Jorge Newbery

Sat 4/10

5:35 pm-10:48 am

2 stops19h 13m

$1,348

St. LouisBuenos Aires

STL Lambert-St Louis - AEP Buenos Aires Jorge Newbery

STLAEP

Lambert-St Louis

Wed 2/24

6:00 am-7:40 am

2 stops22h 40m

Buenos Aires Jorge Newbery

Sat 3/13

5:35 pm-1:43 pm

2 stops23h 08m

$1,358

St. LouisBuenos Aires

STL Lambert-St Louis - AEP Buenos Aires Jorge Newbery

STLAEP

Lambert-St Louis

Thu 12/3

2:33 pm-9:40 am

2 stops16h 07m

Buenos Aires Jorge Newbery

Sun 12/13

2:55 pm-9:01 am

2 stops21h 06m

$1,378

St. LouisBuenos Aires

STL Lambert-St Louis - AEP Buenos Aires Jorge Newbery

STLAEP

Lambert-St Louis

Fri 12/4

10:06 am-7:40 am

2 stops18h 34m

Buenos Aires Jorge Newbery

Fri 12/11

5:35 pm-11:29 am

2 stops20h 54m

$1,408

St. LouisBuenos Aires

STL Lambert-St Louis - AEP Buenos Aires Jorge Newbery

STLAEP

Lambert-St Louis

Wed 3/10

9:00 am-7:40 am

2 stops19h 40m

Buenos Aires Jorge Newbery

Sat 3/20

5:35 pm-2:43 pm

2 stops23h 08m

$1,443

St. LouisBuenos Aires

STL Lambert-St Louis - AEP Buenos Aires Jorge Newbery

STLAEP

Lambert-St Louis

Sat 11/28

2:31 pm-10:30 am

2 stops16h 59m

Buenos Aires Jorge Newbery

Thu 12/10

2:55 pm-9:01 am

2 stops21h 06m

$1,444

St. LouisBuenos Aires

STL Lambert-St Louis - AEP Buenos Aires Jorge Newbery

STLAEP

Lambert-St Louis

Sat 3/20

3:40 pm-12:00 pm

2 stops18h 20m

Buenos Aires Jorge Newbery

Wed 3/24

5:35 pm-2:43 pm

2 stops23h 08m

$1,483

St. LouisBuenos Aires

STL Lambert-St Louis - AEP Buenos Aires Jorge Newbery

STLAEP

Lambert-St Louis

Sun 12/6

10:06 am-7:40 am

2 stops18h 34m

Buenos Aires Jorge Newbery

Sun 12/13

2:55 pm-9:01 am

2 stops21h 06m

$1,496

St. LouisBuenos Aires

STL Lambert-St Louis - AEP Buenos Aires Jorge Newbery

STLAEP

Lambert-St Louis

Mon 11/2

5:38 pm-6:30 pm

2 stops21h 52m

Buenos Aires Jorge Newbery

Mon 11/16

5:35 pm-9:00 am

2 stops18h 25m

$1,501

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Buenos Aires from

How to get the cheapest flight ticket from St. Louis to Buenos Aires Jorge Newbery 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 cheapest airline that flies from Lambert-St Louis to Buenos Aires Jorge Newbery?

GOL is the most popular carrier operating from Lambert-St Louis to Buenos Aires Jorge Newbery

When to book flights from St. Louis to Buenos Aires Jorge Newbery Airport

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to Buenos Aires Jorge Newbery 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 Jorge Newbery Airport (STL to AEP) flight deals and tips

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

Best Price Found

$549

Fastest flight time

17h 49m

Direct flights

None
The best one-way flight to Buenos Aires Jorge Newbery Airport from St. Louis in the past 72 hours is $549. The best round-trip flight deal from St. Louis to Buenos Aires Jorge Newbery Airport found on momondo in the last 72 hours is $1,308.
The fastest flight from St. Louis to Buenos Aires Jorge Newbery Airport takes 17h 49m
There are no direct flights from St. Louis to Buenos Aires Jorge Newbery Airport. There are no popular flight routes from St. Louis to Buenos Aires Jorge Newbery Airport.
Search flight deals

Frequently asked questions about flying from St. Louis to Buenos Aires Jorge Newbery Airport

  • How far is Lambert-St Louis to Buenos Aires Jorge Newbery by plane?

    The distance between Lambert-St Louis and Buenos Aires Jorge Newbery is about 5446.6 mi. In terms of flight time, this usually takes a little over 17h 49m.

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

    Prices for flights from Lambert-St Louis Airport to Buenos Aires Jorge Newbery Airport refresh daily.

  • How old do you have to be to fly from Lambert-St Louis Airport to Buenos Aires Jorge Newbery 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 Jorge Newbery Airport.

  • What documentation or ID do you need to fly to Buenos Aires Jorge Newbery Airport?

    The required travel and health documents for your Buenos Aires Jorge Newbery Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Buenos Aires Jorge Newbery Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Why use momondo?

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

It is quick and easy to find St. Louis to Buenos Aires flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Buenos Aires that suits you.

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

Flights from St. Louis to Buenos Aires with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from St. Louis to Buenos Aires.

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

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