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Cheap flights from St. Louis (STL) to Buenos Aires (BUE) from $901

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 8/16. 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 11 — Jun 181
From?
To?
Tue 6/11
Tue 6/18
1 adult, Economy
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The best prices from Lambert-St Louis to Buenos Aires are usually found in October or April, booked 76 days in advance, depart on a Tuesday or Monday and return on a Tuesday

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 June 6, 2024.

Popular in

December

Cheapest in

October

Average price

$1,159

Round-trip from

$791
High demand for flights, 25% potential price rise
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Best time to find cheap flights, 26% potential price drop
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Average for round-trip flights in June 2024
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From Lambert-St Louis to Buenos Aires (BUE)
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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 43% on this flight, we recommend booking at least 55 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 $1,238 1-2 weeks out and tickets from $1,481 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 $1,225 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 33% on your journey compared to booking in December

What is the cheapest time of day to fly from STL to BUE?

Unlike in the morning, when flights are generally more expensive, you can save up to 17% on flights from St. Louis to Buenos Aires by exploring options for tickets at noon.

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

Find cheap flight options from St. Louis to Buenos Aires specifically for the months of June and July 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 3,009,960 searches. Prices were last updated on June 6, 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.
Sat 6/296:22 pmSTL - EZE
2 stops33h 13mMultiple Airlines
Thu 7/42:30 amEZE - STL
2 stops34h 04mMultiple Airlines
Deal found 6/4$1,229
Sat 6/296:20 amSTL - EZE
1 stop23h 40mUnited Airlines
Fri 7/59:00 pmEZE - STL
1 stop51h 17mUnited Airlines
Deal found 6/4$1,299
Sat 6/295:30 pmSTL - EZE
2 stops60h 30mUnited Airlines
Fri 7/59:00 pmEZE - STL
2 stops26h 37mUnited Airlines
Deal found 6/4$1,317
Fri 6/216:15 amSTL - EZE
1 stop23h 45mUnited Airlines
Wed 6/269:00 pmEZE - STL
1 stop45h 28mUnited Airlines
Deal found 6/5$1,321
Sat 6/296:22 pmSTL - EZE
2 stops31h 08mMultiple Airlines
Fri 7/55:36 amEZE - STL
3 stops37h 52mMultiple Airlines
Deal found 6/4$1,342
Sat 6/296:22 pmSTL - EZE
3 stops27h 43mMultiple Airlines
Fri 7/55:36 amEZE - STL
3 stops37h 52mMultiple Airlines
Deal found 6/4$1,375
Fri 6/213:27 pmSTL - EZE
2 stops17h 23mAmerican Airlines
Wed 6/268:55 pmEZE - STL
2 stops21h 53mAmerican Airlines
Deal found 6/5$1,443
Fri 6/216:30 amSTL - EZE
3 stops30h 20mMultiple Airlines
Tue 6/251:40 amEZE - STL
3 stops41h 48mMultiple Airlines
Deal found 6/5$1,471
Fri 6/218:05 amSTL - EZE
3 stops28h 45mMultiple Airlines
Wed 6/267:35 amEZE - STL
3 stops35h 53mMultiple Airlines
Deal found 6/5$1,475

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 3,009,960 searches. Data last updated June 6, 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 11/135:05 pmSTL - AEP
2 stops20h 00mLATAM Airlines
Thu 11/285:10 pmAEP - STL
2 stops20h 23mLATAM Airlines
Deal found 6/5$1,000
Wed 11/1311:51 amSTL - EZE
1 stop18h 09mDelta
Thu 11/287:35 pmEZE - STL
2 stops17h 58mDelta
Deal found 6/5$1,000
Tue 12/101:00 pmSTL - AEP
2 stops24h 05mLATAM Airlines
Mon 1/2710:05 amAEP - STL
2 stops25h 47mLATAM Airlines
Deal found 6/5$1,002
Thu 10/102:05 pmSTL - AEP
2 stops19h 15mLATAM Airlines
Fri 10/255:10 pmAEP - STL
2 stops19h 33mLATAM Airlines
Deal found 6/5$1,040
Thu 10/1010:00 amSTL - EZE
2 stops18h 15mDelta
Fri 10/256:10 amEZE - STL
2 stops19h 25mDelta
Deal found 6/5$1,040
Wed 11/132:41 pmSTL - EZE
2 stops16h 19mAmerican Airlines
Wed 11/2712:40 amEZE - STL
1 stop18h 45mAmerican Airlines
Deal found 6/5$1,044
Mon 12/166:00 amSTL - AEP
2 stops34h 58mLATAM Airlines
Mon 1/278:51 pmAEP - STL
3 stops29h 47mLATAM Airlines
Deal found 6/5$1,059
Thu 10/1011:51 amSTL - EZE
2 stops16h 24mDelta
Fri 10/258:00 pmEZE - STL
1 stop18h 54mDelta
Deal found 6/5$1,082
Thu 10/102:05 pmSTL - AEP
2 stops19h 15mLATAM Airlines
Fri 10/259:40 pmAEP - STL
3 stops27h 55mLATAM Airlines
Deal found 6/5$1,084

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 3,009,960 searches. Data last updated June 6, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$901 - $1,488

Route

Depart

Return

Price

Lambert-St LouisBuenos Aires Jorge Newbery

STL - AEP

STLAEP

Lambert-St Louis

Fri 8/16

3 stops23h 23m

Buenos Aires Jorge Newbery

Tue 8/27

3 stops27h 27m

$901

Lambert-St LouisBuenos Aires Jorge Newbery

STL - AEP

STLAEP

Lambert-St Louis

Wed 11/13

2 stops20h 00m

Buenos Aires Jorge Newbery

Thu 11/28

2 stops20h 23m

$1,000

Lambert-St LouisBuenos Aires Ministro Pistarini

STL - EZE

STLEZE

Lambert-St Louis

Wed 11/13

1 stop18h 09m

Buenos Aires Ministro Pistarini

Thu 11/28

2 stops17h 58m

$1,000

Lambert-St LouisBuenos Aires Jorge Newbery

STL - AEP

STLAEP

Lambert-St Louis

Wed 11/13

3 stops24h 08m

Buenos Aires Jorge Newbery

Thu 11/28

2 stops36h 04m

$1,002

Lambert-St LouisBuenos Aires Ministro Pistarini

STL - EZE

STLEZE

Lambert-St Louis

Thu 10/10

2 stops18h 15m

Buenos Aires Ministro Pistarini

Fri 10/25

2 stops19h 25m

$1,040

Lambert-St LouisBuenos Aires Jorge Newbery

STL - AEP

STLAEP

Lambert-St Louis

Thu 10/10

2 stops19h 15m

Buenos Aires Jorge Newbery

Fri 10/25

2 stops19h 33m

$1,040

Lambert-St LouisBuenos Aires Ministro Pistarini

STL - EZE

STLEZE

Lambert-St Louis

Wed 11/13

2 stops16h 19m

Buenos Aires Ministro Pistarini

Wed 11/27

1 stop18h 45m

$1,044

Lambert-St LouisBuenos Aires Ministro Pistarini

STL - EZE

STLEZE

Lambert-St Louis

Sat 6/29

1 stop23h 40m

Buenos Aires Ministro Pistarini

Fri 7/5

1 stop51h 17m

$1,299

Lambert-St LouisBuenos Aires Ministro Pistarini

STL - EZE

STLEZE

Lambert-St Louis

Sat 11/16

2 stops25h 25m

Buenos Aires Ministro Pistarini

Sun 12/1

3 stops31h 36m

$1,488

Flights are sorted by cheapest first

Deals found on 6/4

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

Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Buenos Aires. Price data was last updated on May 31, 2024.
The price you pay for your flight from St. Louis to Buenos Aires may vary depending on when you book. For the best chance of a lower fare, look to book 76 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
Search Deals

What is the cheapest day 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 June 2, 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

If weather is an important factor for your trip to Buenos Aires, use this chart to help with planning. For those seeking warmer temperatures, January is the ideal time of year to visit, when temperatures reach an average of 77.0 F. Travelers looking to avoid the cold should look outside of June, when temperatures are typically at their lowest (around 51.8 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 June 6, 2024.
Get a feel of what it's like to fly with United Airlines, American Airlines and Delta 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.
Delta
8.0
Very good
10,368 reviews

Comfort

7.9

Overall

8.0

Entertainment

8.0

Boarding

8.2

Crew

8.6

Food

7.4

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.

Delta
8.0
Very good
10,368 reviews
Delta
8.0
Very good
10,368 reviews

Comfort

7.9

Overall

8.0

Entertainment

8.0

Boarding

8.2

Crew

8.6

Food

7.4

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.

LATAM Airlines
7.5
Good
2,322 reviews
Delta
8.0
Very good
10,368 reviews

Comfort

7.9

Overall

8.0

Entertainment

8.0

Boarding

8.2

Crew

8.6

Food

7.4

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.

United Airlines
7.4
Good
10,703 reviews
Delta
8.0
Very good
10,368 reviews

Comfort

7.9

Overall

8.0

Entertainment

8.0

Boarding

8.2

Crew

8.6

Food

7.4

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.

American Airlines
7.3
Good
14,229 reviews
Delta
8.0
Very good
10,368 reviews

Comfort

7.9

Overall

8.0

Entertainment

8.0

Boarding

8.2

Crew

8.6

Food

7.4

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.

Air Canada
7.0
Good
7,044 reviews
Delta
8.0
Very good
10,368 reviews

Comfort

7.9

Overall

8.0

Entertainment

8.0

Boarding

8.2

Crew

8.6

Food

7.4

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 Multiple Airlines for just $901, but on average you can expect to pay $1,141.

  • 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 $1,044, 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 6/5.

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

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

  • What is the cheapest month 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 $1,145). 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.

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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.

St. Louis to Jorge Newbery flights
St. Louis to Ministro Pistarini flights
Kansas City to Ministro Pistarini flights
Kansas City to Jorge Newbery flights
Kansas City to Cordoba flights

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 3,009,960 searches. Data last updated June 6, 2024.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$814Average$1,188FlexibilityNo cancel feeOn-time69%
DeltaCheapest$929Average$1,271FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$959Average$1,265FlexibilityNo cancel feeOn-time71%
Copa AirlinesCheapest$1,003Average$1,413FlexibilityNo cancel feeOn-time70%
LATAM AirlinesCheapest$1,100Average$1,546FlexibilityNo cancel feeOn-time81%
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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.
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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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