Cheap flights from St. Louis (STL) to Buenos Aires (BUE)

STL — BUE
Aug 20 — Aug 271

The best prices from Lambert-St Louis to Buenos Aires are usually found in October or November, booked 24 days in advance, depart on a Monday or Sunday and return on a Tuesday

How to find the cheapest flight from St. Louis (STL) to Buenos Aires (BUE)

All the information you need to plan the best STL to BUE flight in 2022: compare St. Louis to Buenos Aires flight prices with the expected peak season, weather and rainfall in Buenos Aires.

STL - BUE

Price

$895 - $2,028

BUE

Temperature

51.8 - 77 °F

BUE

Rainfall

2 - 3.9 inches

Popular inAugustHigh demand for flights, 39% potential price rise
Cheapest inOctoberBest time to find cheap flights, 27% potential price drop
Average price$2,028Average for round-trip flights in August 2022
Round-trip from$895From Lambert-St Louis to Buenos Aires (BUE)

What is the cheapest day to fly round-trip from St. Louis to Buenos Aires?

Friday flights are generally found to be more expensive for flights from St. Louis to Buenos Aires. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Buenos Aires.

How far in advance should I book a flight from St. Louis to Buenos Aires?

To save up to 20% on this flight, we recommend booking at least 25 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from St. Louis to Buenos Aires from $1,233 1-2 weeks out and tickets from $1,263 for flights departing within the next 72 hours.

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

October is one of the best times of the year to fly to Buenos Aires from St. Louis. Prices for October average $1,234 per person but you can even find prices for as low as $895. The most expensive prices can be found in the month of August. Opting for a October flight can save you 64% on your journey compared to booking in August

When is the cheapest time to fly from St. Louis to Buenos Aires (STL - BUE)?

Unlike in the afternoon, when flights are generally more expensive, you can save up to 14% on flights from St. Louis to Buenos Aires by exploring options for tickets in the evening.

Cheap flights from St. Louis to Buenos Aires in August, September 2022

The best prices found for STL to BUE flights for August, September
Sep 13 - Sep 22
STL

Lambert-St Louis

EZE

Buenos Aires Ministro Pistarini

1 stop

13h 40m
EZE

Buenos Aires Ministro Pistarini

STL

Lambert-St Louis

1 stop

21h 06m
$1,207

United Airlines

Pick Dates

Deal found 14.8.22

Sep 3 - Sep 11
STL

Lambert-St Louis

EZE

Buenos Aires Ministro Pistarini

2 stops

19h 23m
EZE

Buenos Aires Ministro Pistarini

STL

Lambert-St Louis

2 stops

23h 08m
$1,210

American Airlines

Pick Dates

Deal found 14.8.22

Sep 13 - Sep 21
STL

Lambert-St Louis

EZE

Buenos Aires Ministro Pistarini

2 stops

51h 00m
EZE

Buenos Aires Ministro Pistarini

STL

Lambert-St Louis

2 stops

40h 57m
$1,242

LATAM Airlines

Pick Dates

Deal found 14.8.22

St. Louis to Buenos Aires 2022 flight deals

Cheap flights to Buenos Aires from St. Louis found for this year
Dec 26 - Jan 2
STL

Lambert-St Louis

EZE

Buenos Aires Ministro Pistarini

2 stops

37h 00m
EZE

Buenos Aires Ministro Pistarini

STL

Lambert-St Louis

2 stops

33h 27m
$959

Copa Airlines

Pick Dates

Deal found 13.8.22

Dec 10 - Dec 24
STL

Lambert-St Louis

EZE

Buenos Aires Ministro Pistarini

2 stops

37h 10m
EZE

Buenos Aires Ministro Pistarini

STL

Lambert-St Louis

2 stops

40h 27m
$965

Copa Airlines

Pick Dates

Deal found 13.8.22

Nov 21 - Nov 27
STL

Lambert-St Louis

EZE

Buenos Aires Ministro Pistarini

2 stops

24h 31m
EZE

Buenos Aires Ministro Pistarini

STL

Lambert-St Louis

2 stops

20h 06m
$989

Copa Airlines

Pick Dates

Deal found 13.8.22

Cheap Copa Airlines flights from St. Louis to Buenos Aires

Dec 13 - Dec 30
STL

Lambert-St Louis

EZE

Buenos Aires Ministro Pistarini

2 stops

33h 46m
EZE

Buenos Aires Ministro Pistarini

STL

Lambert-St Louis

2 stops

40h 12m
$959

Copa Airlines

Pick Dates

Deal found 13.8.22

Dec 10 - Dec 24
STL

Lambert-St Louis

EZE

Buenos Aires Ministro Pistarini

2 stops

37h 10m
EZE

Buenos Aires Ministro Pistarini

STL

Lambert-St Louis

2 stops

40h 27m
$965

Copa Airlines

Pick Dates

Deal found 13.8.22

Nov 21 - Nov 27
STL

Lambert-St Louis

EZE

Buenos Aires Ministro Pistarini

2 stops

24h 31m
EZE

Buenos Aires Ministro Pistarini

STL

Lambert-St Louis

2 stops

20h 06m
$989

Copa Airlines

Pick Dates

Deal found 13.8.22

Cheap American Airlines flights from St. Louis to Buenos Aires

Nov 21 - Nov 28
STL

Lambert-St Louis

EZE

Buenos Aires Ministro Pistarini

1 stop

24h 03m
EZE

Buenos Aires Ministro Pistarini

STL

Lambert-St Louis

1 stop

22h 19m
$1,030

American Airlines

Pick Dates

Deal found 13.8.22

Nov 21 - Nov 28
STL

Lambert-St Louis

EZE

Buenos Aires Ministro Pistarini

2 stops

24h 19m
EZE

Buenos Aires Ministro Pistarini

STL

Lambert-St Louis

1 stop

22h 19m
$1,098

American Airlines

Pick Dates

Deal found 13.8.22

Jan 25 - Feb 20
STL

Lambert-St Louis

EZE

Buenos Aires Ministro Pistarini

2 stops

20h 20m
EZE

Buenos Aires Ministro Pistarini

STL

Lambert-St Louis

1 stop

16h 14m
$1,099

American Airlines

Pick Dates

Deal found 13.8.22

Related info for your journey

Useful info, stats and facts about St. Louis to Buenos Aires flights.

What airport do you fly from for flights from St. Louis to Buenos Aires?

Located just 12.7 mi from the city center, Lambert-St Louis is the airport most travelers will use when flying to Buenos Aires from St. Louis. Booking flights from Lambert-St Louis (STL) to Buenos Aires should be relatively easy as there are 0 daily outbound flights to Buenos Aires from 3 different airlines.

Which airlines flying from Lambert-St Louis to Buenos Aires have flexible cancellations due to COVID-19?

Some of the carriers operating flights from Lambert-St Louis to Buenos Aires that may be offering flexible cancellation policies are American Airlines, Delta, and United Airlines. Our site will let you filter for all airlines offering greater flexibility due to COVID-19.

Can I find flights from St. Louis to Buenos Aires for under $1,000 on Cheapflights?

Yes, there are multiple flights from St. Louis to Buenos Aires for under $1,000. The cheapest flight booked recently is on Copa Airlines for just $959, but on average you can expect to pay $1,136.

What are the cheapest airlines flying from St. Louis to Buenos Aires round-trip?

Currently priced at $959, Copa Airlines will fly you from St. Louis to Buenos Aires and back. In addition to Copa Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from American Airlines and United Airlines - these airlines can fly you to your destination from $1,030 and $1,207, respectively. These flights start at 22% lower than the current average price 3 months from now.

What are the most popular airlines that fly from St. Louis to Buenos Aires?

Consider American Airlines, Air Canada or Alaska Airlines when booking your flight. These represent the most popular airlines when flying from St. Louis to Buenos Aires.

What are the cheapest flights from St. Louis to Buenos Aires?

The cheapest flight price from St. Louis to Buenos Aires is $638. On average you can expect to pay $1,329. The most popular route, (Lambert-St Louis - Buenos Aires Ministro Pistarini), can usually be booked for $959.

Alternative routes for St. Louis to Buenos Aires

See prices for flight routes from nearby airports that may be better suited for you.

Top 3 airlines flying from St. Louis to Buenos Aires

The chart below displays the airlines Cheapflights users traveling from St. Louis to Buenos Aires choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
AirlineCheapestAverageFlexibilityOn-timeCOVID-19 safety
United AirlinesCheapest$895Average$1,129FlexibilityNo cancel feeOn-time69%COVID-19 safety
Search United Airlines flights
American AirlinesCheapest$945Average$1,303FlexibilityNo cancel feeOn-time71%COVID-19 safety
Search American Airlines flights
DeltaCheapest$953Average$1,061FlexibilityNo cancel feeOn-timeN/ACOVID-19 safety
Search Delta flights