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$455+ Cheap flights from Barcelona-El Prat (BCN) to St. Louis (STL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/8. Fares are subject to change and may not be available on all flights or dates of travel.
BCN — STL
Nov 26 — Dec 31
Wed 11/26
Wed 12/3
1 adult, Economy
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Cheap flight deals from Barcelona-El Prat to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Barcelona-El Prat (BCN) to St. Louis (STL). 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 October 27, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$763
(United Airlines)

One-way from

$455
(Kiwi.com)

Popular in

January

Cheapest in

February

Average price

$835
Provider with most accurate pricing for Barcelona-El Prat-Lambert-St Louis flight deals.
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Provider most trusted by Cheapflights users for Barcelona-El Prat-Lambert-St Louis flights.
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From Barcelona-El Prat to Lambert-St Louis
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One-way flight from Barcelona-El Prat to Lambert-St Louis
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Highest demand for flights based on searches. 2% potential increase in price ($23 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($25 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find flight deals from Barcelona-El Prat to St. Louis

Cheapest flights from Barcelona-El Prat to St. Louis
Explore the most affordable flight options available from Barcelona-El Prat to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 27, 2025.

This lol.travel deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/216:50 amBCN - STL
1 stop14h 05mLufthansa
Tue 11/256:43 pmSTL - BCN
1 stop11h 27mLufthansa
Deal found 10/25$796
This Kiwi.com deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/243:05 pmBCN - STL
1 stop13h 35mLufthansa
Tue 12/21:00 pmSTL - BCN
2 stops15h 55mLufthansa
Deal found 10/25$802
This United Airlines deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/121:35 pmBCN - STL
2 stops31h 49mUnited Airlines
Mon 11/175:24 pmSTL - BCN
1 stop12h 46mUnited Airlines
Deal found 10/27$817
This Air Canada deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/121:35 pmBCN - STL
2 stops31h 49mAir Canada
Mon 11/174:05 pmSTL - BCN
2 stops15h 00mAir Canada
Deal found 10/27$821
This United Airlines deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/21:50 pmBCN - STL
2 stops32h 39mUnited Airlines
Mon 12/812:55 pmSTL - BCN
1 stop12h 25mUnited Airlines
Deal found 10/27$823
This British Airways deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/912:30 pmBCN - STL
1 stop15h 08mBritish Airways
Tue 12/1610:56 amSTL - BCN
1 stop15h 04mBritish Airways
Deal found 10/24$830
This United Airlines deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/23:05 pmBCN - STL
1 stop28h 10mUnited Airlines
Tue 12/912:55 pmSTL - BCN
1 stop12h 25mUnited Airlines
Deal found 10/27$832
This Expedia deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/17:55 pmBCN - STL
2 stops27h 54mMultiple Airlines
Mon 12/87:02 pmSTL - BCN
1 stop30h 38mMultiple Airlines
Deal found 10/27$882

Cheapflights Fare Finder

 
Customize your flight search to find flights from Barcelona-El Prat to St. Louis 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 2,558,603 searches. Data last updated October 27, 2025.
Use the filters below to find and compare flights from Barcelona-El Prat Airport to St. Louis that are best for you.

Fly from

Barcelona-El Prat

Fly to

St. Louis

Route

Depart

Return

Price

BarcelonaSt. Louis

BCN - STL

BCNSTL

Barcelona-El Prat

Thu 2/19

6:50 am-7:19 pm

2 stops19h 29m

Lambert-St Louis

Mon 2/23

9:55 am-9:00 am

2 stops16h 05m

$764

BarcelonaSt. Louis

BCN - STL

BCNSTL

Barcelona-El Prat

Thu 2/19

6:50 am-12:05 am

2 stops24h 15m

Lambert-St Louis

Mon 2/23

11:39 am-9:00 am

1 stop14h 21m

$769

BarcelonaSt. Louis

BCN - STL

BCNSTL

Barcelona-El Prat

Fri 11/21

6:50 am-1:55 pm

1 stop14h 05m

Lambert-St Louis

Tue 11/25

6:43 pm-1:10 pm

1 stop11h 27m

$796

BarcelonaSt. Louis

BCN - STL

BCNSTL

Barcelona-El Prat

Sat 2/14

6:50 am-7:19 pm

2 stops19h 29m

Lambert-St Louis

Sat 2/28

4:39 pm-8:20 am

2 stops32h 41m

$799

BarcelonaSt. Louis

BCN - STL

BCNSTL

Barcelona-El Prat

Mon 11/24

3:05 pm-9:40 pm

1 stop13h 35m

Lambert-St Louis

Tue 12/2

1:00 pm-11:55 am

2 stops15h 55m

$802

BarcelonaSt. Louis

BCN - STL

BCNSTL

Barcelona-El Prat

Sun 3/8

2:05 pm-11:56 pm

2 stops39h 51m

$455

BarcelonaSt. Louis

BCN - STL

BCNSTL

Barcelona-El Prat

Mon 3/23

11:00 am-11:37 pm

1 stop18h 37m

$533

BarcelonaSt. Louis

BCN - STL

BCNSTL

Barcelona-El Prat

Mon 3/23

8:00 pm-6:15 pm

2 stops28h 15m

$563

BarcelonaSt. Louis

BCN - STL

BCNSTL

Barcelona-El Prat

Tue 12/2

11:30 am-11:56 pm

2 stops19h 26m

$568

BarcelonaSt. Louis

BCN - STL

BCNSTL

Barcelona-El Prat

Sat 3/28

9:10 pm-7:13 am

3 stops40h 03m

$660

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/26

Showing 1-10 of 14 results
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Compare providers for flights from Barcelona-El Prat to St. Louis

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Barcelona-El Prat to St. Louis in October.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Barcelona-El Prat Airport-St. Louis flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Barcelona-El Prat Airport-St. Louis flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Barcelona-El Prat Airport-St. Louis flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Barcelona-El Prat Airport-St. Louis flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Barcelona-El Prat Airport-St. Louis flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Barcelona-El Prat to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Barcelona-El Prat 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.

Cheapflights Insights

Everything you need to know about your flight from Barcelona-El Prat Airport to St. Louis

What is the cheapest month to book a flight from Barcelona-El Prat Airport to St. Louis?

Currently, April is the cheapest month in which you can book a flight from Barcelona-El Prat Airport to St. Louis (average of $643). Flying from Barcelona-El Prat Airport to St. Louis in July is currently the most expensive (average of $991). 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.

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

Find hourly flight availability from Barcelona-El Prat to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 27, 2025.

It’s optimal to fly from Barcelona-El Prat Airport to St. Louis in the evening. By choosing this option you can save up to 14% on the cost of your flight, compared to a flight in the morning.

Related info for your journey

Find useful and relevant information for your journey from Barcelona-El Prat to St. Louis. 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 into for flights to St. Louis from Barcelona-El Prat?

    Lambert-St Louis (STL), located 12.7 mi from the city center, is the airport you fly into when you book flights from Barcelona-El Prat to St. Louis. 0 airlines have flights to Lambert-St Louis from Barcelona-El Prat on a regular basis. Booking flights from Barcelona-El Prat to Lambert-St Louis should not be difficult; the airport handles an average of 0 inbound flights from Barcelona-El Prat per day.

  • How long is the flight from Barcelona-El Prat Airport to St. Louis?

    There are many flights that can get you from Barcelona-El Prat Airport to St. Louis in 19h 29m. Fly via United Airlines or Lufthansa to get the fastest option. The distance between Barcelona-El Prat Airport and St. Louis is about 4638 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • Can I find deals for flights from Barcelona-El Prat to St. Louis that include hotel bookings?

    Yes. In addition to deals on Barcelona-El Prat to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Barcelona-El Prat to St. Louis?

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

  • Can I find deals for business class flights from Barcelona-El Prat to St. Louis?

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

  • What is the cheapest month to book a flight from Barcelona-El Prat Airport to St. Louis?

    Currently, April is the cheapest month in which you can book a flight from Barcelona-El Prat Airport to St. Louis (average of $643). Flying from Barcelona-El Prat Airport to St. Louis in July is currently the most expensive (average of $991). 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

Traveling to a place near St. Louis?

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