Cheap flights from St. Louis (STL) to Buenos Aires (BUE) from $1,000

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/13. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
STL — BUE
Jun 3 — Jun 101

Cheap flight deals from St. Louis to Buenos Aires

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Buenos Aires (BUE). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated May 29, 2024.

Popular in

December

Cheapest in

October

Average price

$1,262

Round-trip from

$791
High demand for flights, 23% potential price rise
Best time to find cheap flights, 26% potential price drop
Average for round-trip flights in May 2024
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.

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 $1,220 per person but you can even find prices for as low as $837. The most expensive prices can be found in the month of December. Opting for a October flight can save you 29% on your journey compared to booking in December

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

Unlike in the morning, when flights are generally more expensive, you can save up to 18% on flights from St. Louis to Buenos Aires by exploring options for tickets in the afternoon.

Cheap American Airlines flights from St. Louis to Buenos Aires

Explore cheap flight options specifically provided by American Airlines for the route between St. Louis and Buenos Aires. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,696,634 searches. Data last updated May 29, 2024.
Peruse some of the lowest-priced American Airlines flights we've found from St. Louis to Buenos Aires. It's recommended that users confirm their flight details before booking.
Tue 8/2012:45 pmSTL - EZE
2 stops20h 06mAmerican Airlines
Fri 8/3010:25 pmEZE - STL
2 stops22h 57mAmerican Airlines
Deal found 5/28$1,041
Wed 11/132:43 pmSTL - EZE
2 stops17h 07mAmerican Airlines
Wed 11/2712:40 amEZE - STL
1 stop18h 45mAmerican Airlines
Deal found 5/28$1,043
Wed 8/2112:45 pmSTL - EZE
2 stops20h 06mAmerican Airlines
Sat 8/318:55 pmEZE - STL
1 stop28h 29mAmerican Airlines
Deal found 5/28$1,054
Thu 8/85:10 amSTL - EZE
1 stop23h 55mAmerican Airlines
Sun 8/188:55 pmEZE - STL
1 stop28h 29mAmerican Airlines
Deal found 5/28$1,103
Thu 8/2212:45 pmSTL - EZE
2 stops18h 20mAmerican Airlines
Sun 9/110:25 pmEZE - STL
2 stops19h 45mAmerican Airlines
Deal found 5/28$1,150
Thu 8/229:09 amSTL - EZE
2 stops19h 56mAmerican Airlines
Sun 9/110:25 pmEZE - STL
1 stop26h 59mAmerican Airlines
Deal found 5/28$1,162
Sat 11/169:42 amSTL - EZE
2 stops18h 13mAmerican Airlines
Sun 12/111:35 pmEZE - STL
1 stop26h 36mAmerican Airlines
Deal found 5/28$1,569
Sat 11/166:02 pmSTL - EZE
1 stop13h 08mAmerican Airlines
Sat 11/3012:40 amEZE - STL
1 stop18h 45mAmerican Airlines
Deal found 5/28$1,644
Sat 11/169:42 amSTL - EZE
2 stops18h 13mAmerican Airlines
Sat 11/3012:40 amEZE - STL
1 stop18h 45mAmerican Airlines
Deal found 5/28$1,647

Cheap LATAM Airlines flights from St. Louis to Buenos Aires

Explore cheap flight options specifically provided by LATAM Airlines for the route between St. Louis and Buenos Aires. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,696,634 searches. Data last updated May 29, 2024.
Browse through some of the cheapest LATAM Airlines flights traveling from St. Louis to Buenos Aires. Check back soon if you're not seeing flights that suit your needs.
Wed 11/1310:00 amSTL - AEP
3 stops20h 08mLATAM Airlines
Thu 11/285:10 pmAEP - STL
2 stops28h 59mLATAM Airlines
Deal found 5/27$1,000
Thu 8/86:00 amSTL - AEP
2 stops32h 00mLATAM Airlines
Sun 8/185:10 pmAEP - STL
2 stops26h 54mLATAM Airlines
Deal found 5/28$1,040
Wed 10/165:05 pmSTL - AEP
2 stops20h 55mLATAM Airlines
Wed 10/305:10 pmAEP - STL
2 stops19h 23mLATAM Airlines
Deal found 5/27$1,082
Sat 10/55:05 pmSTL - EZE
2 stops23h 40mLATAM Airlines
Sun 10/135:36 amEZE - STL
2 stops29h 15mLATAM Airlines
Deal found 5/28$1,105
Sat 11/162:05 pmSTL - AEP
2 stops23h 00mLATAM Airlines
Sun 12/18:51 pmAEP - STL
3 stops29h 44mLATAM Airlines
Deal found 5/27$1,122
Thu 8/85:05 pmSTL - EZE
2 stops27h 55mLATAM Airlines
Sun 8/189:00 amEZE - STL
2 stops25h 52mLATAM Airlines
Deal found 5/28$1,132
Sat 10/511:51 amSTL - AEP
2 stops27h 09mLATAM Airlines
Sun 10/139:40 pmAEP - STL
2 stops37h 11mLATAM Airlines
Deal found 5/28$1,137
Thu 10/105:05 pmSTL - AEP
2 stops20h 55mLATAM Airlines
Fri 10/259:40 pmAEP - STL
3 stops27h 55mLATAM Airlines
Deal found 5/27$1,164
Wed 8/215:05 pmSTL - EZE
2 stops23h 40mLATAM Airlines
Fri 8/303:45 amEZE - STL
2 stops31h 57mLATAM Airlines
Deal found 5/28$1,183

Cheap St. Louis to Buenos Aires flights in May & June 2024

Find cheap flight options from St. Louis to Buenos Aires specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,696,634 searches. Prices were last updated on May 29, 2024.
These are some of the best deals we've found on flights to Buenos Aires in 2024 at this time. If these deals don't appeal to you, be sure to come back soon for more options.
Wed 5/296:15 amSTL - EZE
1 stop23h 45mUnited Airlines
Mon 6/179:00 pmEZE - STL
1 stop21h 25mUnited Airlines
Deal found 5/28$1,164
Wed 5/2911:38 amSTL - EZE
2 stops18h 22mUnited Airlines
Mon 6/179:00 pmEZE - STL
1 stop21h 25mUnited Airlines
Deal found 5/28$1,168
Wed 5/2910:10 amSTL - AEP
2 stops27h 50mLATAM Airlines
Mon 6/175:10 pmAEP - STL
2 stops20h 51mLATAM Airlines
Deal found 5/28$1,234
Wed 5/296:30 pmSTL - EZE
1 stop13h 10mDelta
Mon 6/178:00 pmEZE - STL
1 stop22h 20mDelta
Deal found 5/29$1,234
Wed 5/2911:38 amSTL - EZE
2 stops18h 22mUnited Airlines
Mon 6/179:00 pmEZE - STL
2 stops20h 41mUnited Airlines
Deal found 5/28$1,238
Wed 5/296:00 amSTL - AEP
2 stops32h 00mLATAM Airlines
Mon 6/175:10 pmAEP - STL
2 stops28h 09mLATAM Airlines
Deal found 5/29$1,249
Wed 5/2911:00 amSTL - EZE
3 stops25h 50mAir Canada
Mon 6/174:25 pmEZE - STL
2 stops24h 56mAir Canada
Deal found 5/28$1,425
Wed 5/299:50 amSTL - EZE
2 stops27h 00mAir Canada
Mon 6/174:25 pmEZE - STL
3 stops25h 16mAir Canada
Deal found 5/29$1,493
Fri 5/313:27 pmSTL - EZE
2 stops21h 52mLATAM Airlines
Sat 6/13:45 amEZE - STL
2 stops21h 55mLATAM Airlines
Deal found 5/27$1,548

St. Louis to Buenos Aires 2024 flight deals

Discover exclusive flight deals for travel between St. Louis and Buenos Aires in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,696,634 searches. Data last updated May 29, 2024.
These are some of the best deals we've found on flights to Buenos Aires in 2024 at this time. If these deals don't appeal to you, be sure to come back soon for more options.
Mon 8/1911:51 amSTL - AEP
2 stops25h 29mLATAM Airlines
Thu 8/294:10 pmAEP - STL
2 stops18h 42mLATAM Airlines
Deal found 5/28$1,000
Mon 8/197:15 amSTL - EZE
2 stops21h 00mDelta
Thu 8/297:35 amEZE - STL
2 stops18h 04mDelta
Deal found 5/28$1,000
Wed 11/1310:00 amSTL - EZE
1 stop20h 00mDelta
Thu 11/2810:25 pmEZE - STL
2 stops23h 44mDelta
Deal found 5/28$1,036
Thu 8/86:00 amSTL - AEP
2 stops32h 00mLATAM Airlines
Sun 8/185:10 pmAEP - STL
2 stops26h 54mLATAM Airlines
Deal found 5/28$1,040
Sun 8/183:49 pmSTL - EZE
1 stop15h 51mDelta
Mon 9/26:10 amEZE - STL
2 stops19h 29mDelta
Deal found 5/28$1,040
Tue 8/2012:45 pmSTL - EZE
2 stops20h 06mAmerican Airlines
Fri 8/3010:25 pmEZE - STL
2 stops22h 57mAmerican Airlines
Deal found 5/28$1,041
Wed 11/132:43 pmSTL - EZE
2 stops17h 07mAmerican Airlines
Wed 11/2712:40 amEZE - STL
1 stop18h 45mAmerican Airlines
Deal found 5/28$1,043
Thu 10/106:15 amSTL - EZE
1 stop23h 45mUnited Airlines
Fri 10/259:00 pmEZE - STL
2 stops17h 22mUnited Airlines
Deal found 5/28$1,044
Wed 8/2112:45 pmSTL - EZE
2 stops20h 06mAmerican Airlines
Sat 8/318:55 pmEZE - STL
1 stop28h 29mAmerican Airlines
Deal found 5/28$1,054

Find flights from St. Louis to Buenos Aires within your budget

Customize your flight search to find flights from St. Louis to Buenos Aires 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, Cheapflights users made 2,696,634 searches. Data last updated May 29, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$1,000 - $1,446

Route

Depart

Return

Price

Lambert-St LouisBuenos Aires Jorge Newbery

STL - AEP

STLAEP

Lambert-St Louis

Wed 11/13

3 stops20h 08m

Buenos Aires Jorge Newbery

Thu 11/28

2 stops28h 59m

$1,000

Lambert-St LouisBuenos Aires Ministro Pistarini

STL - EZE

STLEZE

Lambert-St Louis

Mon 8/19

2 stops21h 00m

Buenos Aires Ministro Pistarini

Thu 8/29

2 stops18h 04m

$1,000

Lambert-St LouisBuenos Aires Ministro Pistarini

STL - EZE

STLEZE

Lambert-St Louis

Wed 11/13

1 stop20h 00m

Buenos Aires Ministro Pistarini

Thu 11/28

2 stops23h 44m

$1,036

Lambert-St LouisBuenos Aires Jorge Newbery

STL - AEP

STLAEP

Lambert-St Louis

Thu 8/8

2 stops32h 00m

Buenos Aires Jorge Newbery

Sun 8/18

2 stops26h 54m

$1,040

Lambert-St LouisBuenos Aires Ministro Pistarini

STL - EZE

STLEZE

Lambert-St Louis

Tue 8/20

2 stops20h 06m

Buenos Aires Ministro Pistarini

Fri 8/30

2 stops22h 57m

$1,041

Lambert-St LouisBuenos Aires Ministro Pistarini

STL - EZE

STLEZE

Lambert-St Louis

Thu 10/10

1 stop23h 45m

Buenos Aires Ministro Pistarini

Fri 10/25

2 stops17h 22m

$1,044

Lambert-St LouisBuenos Aires Ministro Pistarini

STL - EZE

STLEZE

Lambert-St Louis

Sun 8/18

2 stops24h 50m

Buenos Aires Ministro Pistarini

Thu 8/29

2 stops30h 40m

$1,253

Lambert-St LouisBuenos Aires Ministro Pistarini

STL - EZE

STLEZE

Lambert-St Louis

Tue 8/20

2 stops19h 10m

Buenos Aires Ministro Pistarini

Sat 8/31

2 stops19h 06m

$1,419

Lambert-St LouisBuenos Aires Ministro Pistarini

STL - EZE

STLEZE

Lambert-St Louis

Wed 8/21

2 stops52h 05m

Buenos Aires Ministro Pistarini

Sat 8/31

3 stops29h 56m

$1,446

Flights are sorted by cheapest first

Deals found on 5/27

When is the cheapest time to fly from St. Louis to Buenos Aires?

Use this chart to determine the cheapest time to fly round-trip from St. Louis to Buenos Aires. Price data was last updated on May 19, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their St. Louis to Buenos Aires flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Thursday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

Best time to book a flight from St. Louis to Buenos Aires

Have a flexible travel schedule? Discover the best time to fly to Buenos Aires from St. Louis with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Temperature and rainfall in Buenos Aires by month

Plan your trip to Buenos Aires by taking into account the average temperature and rainfall totals by month.

BUE

Temperature

51.8 - 77 °F

Reviews of airlines servicing Buenos Aires

Get insights into the airlines that provide service to Buenos Aires. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Buenos Aires. Reviews last updated May 29, 2024.
Get a feel of what it's like to fly with American Airlines, LATAM Airlines and Air Canada from St. Louis to Buenos Aires by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.0
Very good
10,476 reviews

Boarding

8.2

Overall

8.0

Crew

8.6

Food

7.4

Comfort

7.9

Entertainment

8.0

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

8.0
Very good
10,476 reviews
8.0
Very good
10,476 reviews

Boarding

8.2

Overall

8.0

Crew

8.6

Food

7.4

Comfort

7.9

Entertainment

8.0

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

8.0
Very good
2,627 reviews
8.0
Very good
10,476 reviews

Boarding

8.2

Overall

8.0

Crew

8.6

Food

7.4

Comfort

7.9

Entertainment

8.0

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

7.6
Good
2,366 reviews
8.0
Very good
10,476 reviews

Boarding

8.2

Overall

8.0

Crew

8.6

Food

7.4

Comfort

7.9

Entertainment

8.0

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

7.5
Good
3,661 reviews
8.0
Very good
10,476 reviews

Boarding

8.2

Overall

8.0

Crew

8.6

Food

7.4

Comfort

7.9

Entertainment

8.0

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

7.4
Good
10,799 reviews
8.0
Very good
10,476 reviews

Boarding

8.2

Overall

8.0

Crew

8.6

Food

7.4

Comfort

7.9

Entertainment

8.0

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Buenos Aires. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • 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 5 different airlines.

  • 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 LATAM Airlines for just $1,000, but on average you can expect to pay $1,084.

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

    Currently priced at $1,000, LATAM Airlines will fly you from St. Louis to Buenos Aires and back. In addition to LATAM Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Delta and American Airlines - these airlines can fly you to your destination from $1,000 and $1,041, respectively. These flights start at 18% lower than the current average price 3 months from now.

  • What does STL to EZE mean?

    This is defined as Lambert-St Louis Airport (STL) and Buenos Aires Ministro Pistarini Airport (EZE). Codes like Buenos Aires Ministro Pistarini Airport are often used to just call airports uniquely. This flight route has multiple associated airports, so we think it might be helpful to learn the name and codes of them as well. They are Buenos Aires Jorge Newbery Airport (AEP).

  • Can I find deals for flights from St. Louis to Buenos Aires that include extra baggage allowance?

    The amount of baggage you can bring on your St. Louis to Buenos Aires flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from St. Louis to Buenos Aires with specific airlines?

    Yes, Cheapflights allows you to browse and filter St. Louis to Buenos Aires flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • Can I find deals for flights from St. Louis to Buenos Aires that include hotel bookings?

    Yes. In addition to deals on St. Louis to Buenos Aires flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Buenos Aires?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Buenos Aires.

  • Can I find deals for business class flights from St. Louis to Buenos Aires?

    Yes. Cheapflights offers flight deals from St. Louis to Buenos Aires by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • Can I find deals for flights from St. Louis to Buenos Aires that allow pets onboard?

    Many airlines flying from St. Louis to Buenos Aires offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from St. Louis to Buenos Aires?

    Yes, you can often find last-minute deals on St. Louis to Buenos Aires flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the St. Louis to Buenos Aires flight deals updated?

    The St. Louis to Buenos Aires flight deals you see on this page were last updated on 5/28.

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

  • When is the best time to book a flight from St. Louis to Buenos Aires?

    Currently, April is the cheapest month in which you can book a flight from St. Louis to Buenos Aires (average of $793). Flying from St. Louis to Buenos Aires in December is currently the most expensive (average of $1,147). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for St. Louis to Buenos Aires
See prices for flight routes from nearby airports that may be better suited for you.

Top 5 airlines flying from St. Louis to Buenos Aires

Discover the top 5 airlines that operate flights from St. Louis to Buenos Aires. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,696,634 searches. Data last updated May 29, 2024.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$814Average$1,238FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
DeltaCheapest$927Average$1,277FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
American AirlinesCheapest$959Average$1,265FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Copa AirlinesCheapest$1,003Average$1,413FlexibilityNo cancel feeOn-time70%
Search Copa Airlines flights
LATAM AirlinesCheapest$1,100Average$1,546FlexibilityNo cancel feeOn-time81%
Search LATAM Airlines flights

Search flights from St. Louis to Buenos Aires by cabin class

Find flights from St. Louis to Buenos Aires, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from St. Louis to Buenos Aires?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Buenos Aires from St. Louis today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from St. Louis to Buenos Aires?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from St. Louis to Buenos Aires.

Can Cheapflights find flights from St. Louis to Buenos Aires with no change fees?

Need flexible booking options for your flight to Buenos Aires from St. Louis? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from St. Louis to Buenos Aires become cheaper?

Not ready to book yet? You can track prices for flights from St. Louis to Buenos Aires on Cheapflights with our Price Alert feature and get notified when better prices are available.

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