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St. Louis

$355+ 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 4/28. Fares are subject to change and may not be available on all flights or dates of travel.
BCN — STL
Feb 25 — Mar 41
Wed 2/25
Wed 3/4
1 adult, Economy
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Cheap 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 January 26, 2026.

This British Airways deal was found by Cheapflights users on 1/25. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/119:35 am
BCN
-
STL
1 stop19h 23m
British Airways
Wed 3/187:00 am
STL
-
BCN
1 stop18h 50m
British Airways
Deal found 1/25$674
This British Airways deal was found by Cheapflights users on 1/25. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/112:30 pm
BCN
-
STL
1 stop17h 14m
British Airways
Sat 2/79:33 am
STL
-
BCN
1 stop16h 27m
British Airways
Deal found 1/25$680
This Iberia deal was found by Cheapflights users on 1/23. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/1910:40 am
BCN
-
STL
1 stop19h 18m
Iberia
Mon 2/2311:46 am
STL
-
BCN
1 stop14h 04m
Iberia
Deal found 1/23$683
This British Airways deal was found by Cheapflights users on 1/24. 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.
Sun 2/1512:30 pm
BCN
-
STL
1 stop17h 34m
British Airways
Sat 2/216:36 pm
STL
-
BCN
2 stops14h 29m
British Airways
Deal found 1/24$694
This United Airlines deal was found by Cheapflights users on 1/23. 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.
Thu 2/196:50 am
BCN
-
STL
2 stops21h 15m
United Airlines
Mon 2/239:55 am
STL
-
BCN
2 stops16h 05m
United Airlines
Deal found 1/23$772

Find 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 January 26, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
1 star

Round-trip from

$674
(British Airways)

One-way from

$355
(Kiwi.com)

Popular in

August

Cheapest in

March

Average price

$1,049
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. 10% potential increase in price ($100 potential increase over avg. RT price).
Search Deals
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 January 2026
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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 January 26, 2026.
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

Wed 3/11

9:35 am-10:58 pm

1 stop19h 23m

Lambert-St Louis

Wed 3/18

7:00 am-7:50 am

1 stop18h 50m

$674

BarcelonaSt. Louis

BCN - STL

BCNSTL

Barcelona-El Prat

Sun 2/15

12:30 pm-11:04 pm

1 stop17h 34m

Lambert-St Louis

Sat 2/21

9:35 am-8:50 am

1 stop16h 15m

$680

BarcelonaSt. Louis

BCN - STL

BCNSTL

Barcelona-El Prat

Thu 2/19

10:40 am-10:58 pm

1 stop19h 18m

Lambert-St Louis

Mon 2/23

11:46 am-8:50 am

1 stop14h 04m

$683

BarcelonaSt. Louis

BCN - STL

BCNSTL

Barcelona-El Prat

Sun 2/15

12:30 pm-11:48 pm

2 stops18h 18m

Lambert-St Louis

Sat 2/21

11:46 am-8:50 am

1 stop14h 04m

$694

BarcelonaSt. Louis

BCN - STL

BCNSTL

Barcelona-El Prat

Thu 2/19

6:50 am-9:05 pm

2 stops21h 15m

Lambert-St Louis

Mon 2/23

9:55 am-9:00 am

2 stops16h 05m

$772

BarcelonaSt. Louis

BCN - STL

BCNSTL

Barcelona-El Prat

Tue 4/28

6:40 pm-10:30 am

2 stops46h 50m

$355

BarcelonaSt. Louis

BCN - STL

BCNSTL

Barcelona-El Prat

Wed 4/29

3:30 pm-10:30 am

2 stops26h 00m

$369

BarcelonaSt. Louis

BCN - STL

BCNSTL

Barcelona-El Prat

Sun 5/10

7:30 am-2:12 pm

3 stops37h 42m

$418

BarcelonaSt. Louis

BCN - STL

BCNSTL

Barcelona-El Prat

Thu 4/30

9:15 pm-7:12 pm

3 stops52h 57m

$446

BarcelonaSt. Louis

BCN - STL

BCNSTL

Barcelona-El Prat

Sun 4/26

12:15 pm-11:19 pm

2 stops42h 04m

$459

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/24

Showing 1-10 of 12 results
1
2
  • Most accurate provider: When it comes to deals on Barcelona-El Prat Airport-St. Louis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Barcelona-El Prat Airport-St. Louis flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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.

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 18m. Fly via British Airways or Iberia 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.

  • What are the cheapest airlines to fly from Barcelona-El Prat Airport to St. Louis one-way?

    To fly one-way, consider booking your trip with Aer Lingus, which is currently one of the cheapest options available, starting at $471. British Airways flights start at $536 while deals on Lufthansa start at $644 one-way.

  • 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.

See more FAQs

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
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Chesterfield
Alton
Farmington
Festus

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