Cheap flights from St. Louis (STL) to Buenos Aires (BUE)
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 in | August | High demand for flights, 39% potential price rise |
|---|---|---|
| Cheapest in | October | Best time to find cheap flights, 27% potential price drop |
| Average price | $2,028 | Average for round-trip flights in August 2022 |
| Round-trip from | $895 | From 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
Lambert-St Louis
Buenos Aires Ministro Pistarini
1 stop
13h 40mBuenos Aires Ministro Pistarini
Lambert-St Louis
1 stop
21h 06mUnited Airlines
Lambert-St Louis
Buenos Aires Ministro Pistarini
2 stops
19h 23mBuenos Aires Ministro Pistarini
Lambert-St Louis
2 stops
23h 08mAmerican Airlines
Lambert-St Louis
Buenos Aires Ministro Pistarini
2 stops
51h 00mBuenos Aires Ministro Pistarini
Lambert-St Louis
2 stops
40h 57mLATAM Airlines
St. Louis to Buenos Aires 2022 flight deals
Cheap flights to Buenos Aires from St. Louis found for this year
Lambert-St Louis
Buenos Aires Ministro Pistarini
2 stops
37h 00mBuenos Aires Ministro Pistarini
Lambert-St Louis
2 stops
33h 27mCopa Airlines
Lambert-St Louis
Buenos Aires Ministro Pistarini
2 stops
37h 10mBuenos Aires Ministro Pistarini
Lambert-St Louis
2 stops
40h 27mCopa Airlines
Lambert-St Louis
Buenos Aires Ministro Pistarini
2 stops
24h 31mBuenos Aires Ministro Pistarini
Lambert-St Louis
2 stops
20h 06mCopa Airlines
Cheap Copa Airlines flights from St. Louis to Buenos Aires
Lambert-St Louis
Buenos Aires Ministro Pistarini
2 stops
33h 46mBuenos Aires Ministro Pistarini
Lambert-St Louis
2 stops
40h 12mCopa Airlines
Lambert-St Louis
Buenos Aires Ministro Pistarini
2 stops
37h 10mBuenos Aires Ministro Pistarini
Lambert-St Louis
2 stops
40h 27mCopa Airlines
Lambert-St Louis
Buenos Aires Ministro Pistarini
2 stops
24h 31mBuenos Aires Ministro Pistarini
Lambert-St Louis
2 stops
20h 06mCopa Airlines
Cheap American Airlines flights from St. Louis to Buenos Aires
Lambert-St Louis
Buenos Aires Ministro Pistarini
1 stop
24h 03mBuenos Aires Ministro Pistarini
Lambert-St Louis
1 stop
22h 19mAmerican Airlines
Lambert-St Louis
Buenos Aires Ministro Pistarini
2 stops
24h 19mBuenos Aires Ministro Pistarini
Lambert-St Louis
1 stop
22h 19mAmerican Airlines
Lambert-St Louis
Buenos Aires Ministro Pistarini
2 stops
20h 20mBuenos Aires Ministro Pistarini
Lambert-St Louis
1 stop
16h 14mAmerican Airlines
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.