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Cheap flights from St. Louis (STL) to Buenos Aires (BUE) from $918

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 5/12. 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
May 12 — May 191
From?
To?
Sun 5/12
Sun 5/19
1 adult, Economy
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The best prices from Lambert-St Louis to Buenos Aires are usually found in October or June, booked 76 days in advance, depart on a Tuesday or Sunday 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 May 7, 2024.

Popular in

December

Cheapest in

October

Average price

$1,119

Round-trip from

$795
High demand for flights, 28% 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 May 2024
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From Lambert-St Louis to Buenos Aires (BUE)
Search Deals

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

Sunday 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 $1,219 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 38% 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 15% on flights from St. Louis to Buenos Aires by exploring options for tickets in the afternoon.

Cheap Delta flights from St. Louis to Buenos Aires

Explore cheap flight options specifically provided by Delta 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 2,689,106 searches. Data last updated May 7, 2024.
Peruse some of the lowest-priced Delta flights we've found from St. Louis to Buenos Aires. It's recommended that users confirm their flight details before booking.
Sat 9/77:10 amSTL - EZE
2 stops33h 35mDelta
Mon 9/93:45 amEZE - STL
2 stops21h 50mDelta
Deal found 5/6$1,040
Fri 10/411:51 amSTL - EZE
1 stop19h 44mDelta
Mon 10/78:00 pmEZE - STL
1 stop18h 54mDelta
Deal found 5/6$1,187
Sun 5/129:59 amSTL - EZE
1 stop21h 41mDelta
Mon 5/278:00 pmEZE - STL
1 stop17h 48mDelta
Deal found 5/6$1,189
Wed 7/243:43 pmSTL - EZE
1 stop16h 02mDelta
Tue 7/308:00 pmEZE - STL
1 stop15h 06mDelta
Deal found 5/6$1,307
Wed 6/191:06 pmSTL - EZE
1 stop18h 39mDelta
Thu 6/276:10 amEZE - STL
2 stops19h 33mDelta
Deal found 5/6$4,974

Cheap Air Canada flights from St. Louis to Buenos Aires

Explore cheap flight options specifically provided by Air Canada 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 2,689,106 searches. Data last updated May 7, 2024.
Browse through some of the cheapest Air Canada flights traveling from St. Louis to Buenos Aires. Check back soon if you're not seeing flights that suit your needs.
Fri 10/412:00 pmSTL - EZE
2 stops24h 50mAir Canada
Mon 10/74:25 pmEZE - STL
3 stops30h 40mAir Canada
Deal found 5/6$1,256
Wed 5/294:05 pmSTL - EZE
2 stops20h 45mAir Canada
Mon 6/174:25 pmEZE - STL
3 stops25h 16mAir Canada
Deal found 5/7$1,308
Wed 5/299:50 amSTL - EZE
2 stops27h 00mAir Canada
Mon 6/174:25 pmEZE - STL
3 stops25h 16mAir Canada
Deal found 5/6$1,315
Wed 5/2911:38 amSTL - EZE
3 stops25h 12mAir Canada
Mon 6/174:25 pmEZE - STL
3 stops21h 48mAir Canada
Deal found 5/6$1,404
Wed 6/199:50 amSTL - EZE
3 stops27h 00mAir Canada
Thu 6/274:25 pmEZE - STL
2 stops24h 56mAir Canada
Deal found 5/6$1,415
Wed 5/2911:38 amSTL - EZE
3 stops25h 12mAir Canada
Mon 6/174:25 pmEZE - STL
3 stops25h 16mAir Canada
Deal found 5/7$1,432
Fri 10/412:00 pmSTL - EZE
3 stops24h 50mAir Canada
Mon 10/74:25 pmEZE - STL
3 stops30h 40mAir Canada
Deal found 5/6$1,465
Wed 6/199:50 amSTL - EZE
3 stops27h 00mAir Canada
Thu 6/274:25 pmEZE - STL
3 stops25h 15mAir Canada
Deal found 5/6$1,565
Wed 6/194:05 pmSTL - EZE
2 stops20h 45mAir Canada
Thu 6/274:25 pmEZE - STL
3 stops30h 40mAir Canada
Deal found 5/6$4,308

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 2,689,106 searches. Prices were last updated on May 7, 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.
Sun 5/127:30 pmSTL - EZE
3 stops34h 10mMultiple Airlines
Mon 5/276:00 amEZE - STL
3 stops29h 39mMultiple Airlines
Deal found 5/6$918
Sun 5/127:30 pmSTL - EZE
2 stops31h 05mMultiple Airlines
Mon 5/276:00 amEZE - STL
3 stops29h 39mMultiple Airlines
Deal found 5/6$930
Wed 6/1911:15 amSTL - EZE
1 stop18h 45mUnited Airlines
Thu 6/279:00 pmEZE - STL
1 stop27h 14mUnited Airlines
Deal found 5/6$1,090
Wed 6/1911:38 amSTL - EZE
2 stops18h 22mUnited Airlines
Thu 6/279:00 pmEZE - STL
1 stop27h 14mUnited Airlines
Deal found 5/6$1,095
Wed 5/2911:15 amSTL - EZE
1 stop18h 45mUnited Airlines
Mon 6/179:00 pmEZE - STL
1 stop14h 56mUnited Airlines
Deal found 5/6$1,164
Wed 5/292:00 pmSTL - EZE
2 stops18h 00mAmerican Airlines
Mon 6/1710:25 pmEZE - STL
2 stops20h 26mAmerican Airlines
Deal found 5/6$1,167
Wed 5/2911:38 amSTL - EZE
2 stops18h 22mUnited Airlines
Mon 6/179:00 pmEZE - STL
1 stop14h 56mUnited Airlines
Deal found 5/6$1,168
Wed 6/198:05 amSTL - EZE
2 stops21h 55mUnited Airlines
Thu 6/279:00 pmEZE - STL
2 stops43h 36mUnited Airlines
Deal found 5/6$1,173
Sun 5/128:05 amSTL - EZE
2 stops45h 55mUnited Airlines
Mon 5/279:00 pmEZE - STL
1 stop21h 25mUnited Airlines
Deal found 5/6$1,185

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 2,689,106 searches. Data last updated May 7, 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.
Sun 5/127:30 pmSTL - EZE
3 stops34h 10mMultiple Airlines
Mon 5/276:00 amEZE - STL
3 stops29h 39mMultiple Airlines
Deal found 5/6$918
Sun 5/127:30 pmSTL - EZE
2 stops31h 05mMultiple Airlines
Mon 5/276:00 amEZE - STL
3 stops29h 39mMultiple Airlines
Deal found 5/6$930
Wed 11/136:00 amSTL - AEP
3 stops24h 08mLATAM Airlines
Thu 11/285:10 pmAEP - STL
2 stops27h 49mLATAM Airlines
Deal found 5/6$1,000
Wed 11/132:05 pmSTL - EZE
2 stops26h 43mLATAM Airlines
Wed 11/273:45 amEZE - STL
2 stops22h 50mLATAM Airlines
Deal found 5/6$1,000
Wed 11/1311:58 amSTL - EZE
1 stop19h 12mAmerican Airlines
Thu 11/2811:35 pmEZE - STL
2 stops17h 22mAmerican Airlines
Deal found 5/6$1,003
Thu 10/105:05 pmSTL - AEP
2 stops20h 55mLATAM Airlines
Fri 10/259:40 pmAEP - STL
3 stops27h 55mLATAM Airlines
Deal found 5/6$1,040
Sat 9/710:00 amSTL - EZE
2 stops30h 45mDelta
Tue 9/108:00 pmEZE - STL
1 stop21h 56mDelta
Deal found 5/5$1,040
Fri 8/2311:51 amSTL - AEP
2 stops25h 29mLATAM Airlines
Tue 8/275:10 pmAEP - STL
2 stops28h 04mLATAM Airlines
Deal found 5/5$1,060
Tue 12/1010:00 amSTL - EZE
2 stops29h 35mLATAM Airlines
Mon 1/277:35 amEZE - STL
2 stops19h 03mLATAM Airlines
Deal found 5/6$1,067

St. Louis to Buenos Aires flights leaving soon

Find last-minute flight options from St. Louis to Buenos Aires for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 2,689,106 searches. Data last updated May 7, 2024.
Have a look at some of the last-minute flights available departing from St. Louis to Buenos Aires. To prevent any unwanted surprises, users should verify their flight info before booking.
Sun 5/127:30 pmSTL - EZE
3 stops34h 10mMultiple Airlines
Mon 5/276:00 amEZE - STL
3 stops29h 39mMultiple Airlines
Deal found 5/6$918
Sun 5/127:30 pmSTL - EZE
2 stops31h 05mMultiple Airlines
Mon 5/276:00 amEZE - STL
3 stops29h 39mMultiple Airlines
Deal found 5/6$930
Sun 5/128:05 amSTL - EZE
2 stops45h 55mUnited Airlines
Mon 5/279:00 pmEZE - STL
1 stop21h 25mUnited Airlines
Deal found 5/6$1,185
Sun 5/129:59 amSTL - EZE
1 stop21h 41mDelta
Mon 5/278:00 pmEZE - STL
1 stop17h 48mDelta
Deal found 5/6$1,189
Sun 5/127:10 pmSTL - AEP
2 stops42h 50mLATAM Airlines
Mon 5/275:10 pmAEP - STL
2 stops20h 38mLATAM Airlines
Deal found 5/6$1,252
Sun 5/128:27 amSTL - EZE
2 stops19h 08mMultiple Airlines
Sun 5/261:40 amEZE - STL
2 stops19h 39mMultiple Airlines
Deal found 5/6$1,675
Sun 5/1211:00 amSTL - EZE
3 stops25h 50mMultiple Airlines
Sun 5/261:40 amEZE - STL
2 stops21h 25mMultiple Airlines
Deal found 5/6$3,519

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 2,689,106 searches. Data last updated May 7, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$1,040 - $2,174

Route

Depart

Return

Price

Lambert-St LouisBuenos Aires Jorge Newbery

STL - AEP

STLAEP

Lambert-St Louis

Thu 10/10

2 stops20h 55m

Buenos Aires Jorge Newbery

Fri 10/25

3 stops27h 55m

$1,040

Lambert-St LouisBuenos Aires Ministro Pistarini

STL - EZE

STLEZE

Lambert-St Louis

Sat 9/7

2 stops33h 35m

Buenos Aires Ministro Pistarini

Mon 9/9

2 stops21h 50m

$1,040

Lambert-St LouisBuenos Aires Jorge Newbery

STL - AEP

STLAEP

Lambert-St Louis

Fri 8/23

2 stops25h 35m

Buenos Aires Jorge Newbery

Tue 8/27

2 stops28h 04m

$1,060

Lambert-St LouisBuenos Aires Ministro Pistarini

STL - EZE

STLEZE

Lambert-St Louis

Fri 8/9

1 stop23h 40m

Buenos Aires Ministro Pistarini

Sun 8/18

1 stop14h 51m

$1,080

Lambert-St LouisBuenos Aires Ministro Pistarini

STL - EZE

STLEZE

Lambert-St Louis

Fri 8/9

1 stop23h 40m

Buenos Aires Ministro Pistarini

Sun 8/18

2 stops20h 49m

$1,084

Lambert-St LouisBuenos Aires Ministro Pistarini

STL - EZE

STLEZE

Lambert-St Louis

Wed 5/29

2 stops18h 00m

Buenos Aires Ministro Pistarini

Mon 6/17

2 stops20h 26m

$1,167

Lambert-St LouisBuenos Aires Ministro Pistarini

STL - EZE

STLEZE

Lambert-St Louis

Fri 10/4

2 stops24h 50m

Buenos Aires Ministro Pistarini

Mon 10/7

3 stops30h 40m

$1,256

Lambert-St LouisBuenos Aires Ministro Pistarini

STL - EZE

STLEZE

Lambert-St Louis

Fri 10/4

2 stops34h 49m

Buenos Aires Ministro Pistarini

Sun 10/6

2 stops37h 57m

$1,411

Lambert-St LouisBuenos Aires Ministro Pistarini

STL - EZE

STLEZE

Lambert-St Louis

Wed 5/29

2 stops19h 25m

Buenos Aires Ministro Pistarini

Sun 6/16

2 stops21h 11m

$2,174

Flights are sorted by cheapest first

Deals found on 5/6

When is the best time to 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 3, 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

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 April 28, 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

Average price of flights to Buenos Aires by month

Plan your trip from St. Louis to Buenos Aires by taking into account the cheapest months to travel. The average price of a one-way flight from St. Louis to Buenos Aires is currently $0 while a round-trip flight costs $1,257. Price data was last updated on May 5, 2024.

Currently, September 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 $1,153). 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.

January

$996

February

$1,121

March

$1,024

April

$797

May

$828

June

$871

July

$981

August

$809

September

$793

October

$881

November

$963

December

$1,153

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 7, 2024.
Get a feel of what it's like to fly with Delta, Air Canada and LATAM Airlines 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
8.1
Very good
10,818 reviews
Check prices

Crew

8.6

Entertainment

8.0

Comfort

7.9

Overall

8.1

Food

7.4

Boarding

8.2

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
8.1
Very good
10,818 reviews
Delta
8.1
Very good
10,818 reviews
Check prices

Crew

8.6

Entertainment

8.0

Comfort

7.9

Overall

8.1

Food

7.4

Boarding

8.2

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.

Copa Airlines
8.0
Very good
2,781 reviews
Delta
8.1
Very good
10,818 reviews
Check prices

Crew

8.6

Entertainment

8.0

Comfort

7.9

Overall

8.1

Food

7.4

Boarding

8.2

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
7.6
Good
2,456 reviews
Delta
8.1
Very good
10,818 reviews
Check prices

Crew

8.6

Entertainment

8.0

Comfort

7.9

Overall

8.1

Food

7.4

Boarding

8.2

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
11,090 reviews
Delta
8.1
Very good
10,818 reviews
Check prices

Crew

8.6

Entertainment

8.0

Comfort

7.9

Overall

8.1

Food

7.4

Boarding

8.2

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
14,697 reviews
Delta
8.1
Very good
10,818 reviews
Check prices

Crew

8.6

Entertainment

8.0

Comfort

7.9

Overall

8.1

Food

7.4

Boarding

8.2

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 $1,100 on Cheapflights?

    Yes, there are multiple flights from St. Louis to Buenos Aires for under $1,100. The cheapest flight booked recently is on LATAM Airlines for just $1,040, but on average you can expect to pay $1,111.

  • Are there last-minute flights available from St. Louis to Buenos Aires for under $1,000?

    There are currently 7+ open flights from St. Louis to Buenos Aires within the next 7 days for less than $1,000.

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

    Currently priced at $1,040, 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 United Airlines - these airlines can fly you to your destination from $1,040 and $1,080, respectively. These flights start at 14% 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, Copa Airlines or Delta when booking your flight. These represent the most popular airlines when flying from St. Louis to Buenos Aires.

  • 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 5/6.

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.

St. Louis to Ministro Pistarini flights
St. Louis to Jorge Newbery 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 2,689,106 searches. Data last updated May 7, 2024.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$814Average$1,197FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
DeltaCheapest$923Average$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
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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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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?

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

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

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