$497 Cheap Flights from Barcelona (BCN) to St. Louis (STL)

View $497 flight on Thu, Feb 5, 2026Opens in a new window

Popular airlines from Barcelona El Prat Airport (BCN) to St. Louis Lambert Intl. Airport (STL)

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Cheap Flights from Barcelona to St. Louis (BCN-STL)

Prices were available within the past 7 days and start at $497 for one-way flights and $748 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Mon, Mar 9 - Mon, Mar 16
BCN
Barcelona
STL
St. Louis
$748 Roundtrip, found 16 hours ago
$748
Roundtrip
found 16 hours ago
Select American Airlines flight, departing Mon, Mar 9 from Barcelona to St. Louis, returning Mon, Mar 16, priced at $748 found 16 hours ago
British Airways
Mon, Mar 9 - Mon, Mar 16
BCN
Barcelona
STL
St. Louis
$751 Roundtrip, found 16 hours ago
$751
Roundtrip
found 16 hours ago
Select British Airways flight, departing Mon, Mar 9 from Barcelona to St. Louis, returning Mon, Mar 16, priced at $751 found 16 hours ago
British Airways
Mon, Mar 9 - Mon, Mar 16
BCN
Barcelona
STL
St. Louis
$758 Roundtrip, found 16 hours ago
$758
Roundtrip
found 16 hours ago
Select British Airways flight, departing Mon, Mar 9 from Barcelona to St. Louis, returning Mon, Mar 16, priced at $758 found 16 hours ago
Iberia
Mon, Mar 9 - Mon, Mar 16
BCN
Barcelona
STL
St. Louis
$765 Roundtrip, found 16 hours ago
$765
Roundtrip
found 16 hours ago
Select Iberia flight, departing Mon, Mar 9 from Barcelona to St. Louis, returning Mon, Mar 16, priced at $765 found 16 hours ago
Iberia
Mon, Mar 9 - Mon, Mar 16
BCN
Barcelona
STL
St. Louis
$767 Roundtrip, found 16 hours ago
$767
Roundtrip
found 16 hours ago
Select Iberia flight, departing Mon, Mar 9 from Barcelona to St. Louis, returning Mon, Mar 16, priced at $767 found 16 hours ago
British Airways
Fri, Feb 6 - Tue, Feb 24
BCN
Barcelona
STL
St. Louis
$796 Roundtrip, found 2 days ago
$796
Roundtrip
found 2 days ago
Select British Airways flight, departing Fri, Feb 6 from Barcelona to St. Louis, returning Tue, Feb 24, priced at $796 found 2 days ago
Lufthansa
Fri, Feb 6 - Tue, Feb 24
BCN
Barcelona
STL
St. Louis
$800 Roundtrip, found 2 days ago
$800
Roundtrip
found 2 days ago
Select Lufthansa flight, departing Fri, Feb 6 from Barcelona to St. Louis, returning Tue, Feb 24, priced at $800 found 2 days ago
Iberia
Fri, Feb 6 - Tue, Feb 24
BCN
Barcelona
STL
St. Louis
$800 Roundtrip, found 2 days ago
$800
Roundtrip
found 2 days ago
Select Iberia flight, departing Fri, Feb 6 from Barcelona to St. Louis, returning Tue, Feb 24, priced at $800 found 2 days ago
United
Wed, Mar 11 - Mon, Mar 23
BCN
Barcelona
STL
St. Louis
$814 Roundtrip, found 3 days ago
$814
Roundtrip
found 3 days ago
Select United flight, departing Wed, Mar 11 from Barcelona to St. Louis, returning Mon, Mar 23, priced at $814 found 3 days ago
Virgin Atlantic
Fri, Feb 6 - Tue, Feb 24
BCN
Barcelona
STL
St. Louis
$823 Roundtrip, found 2 days ago
$823
Roundtrip
found 2 days ago
Select Virgin Atlantic flight, departing Fri, Feb 6 from Barcelona to St. Louis, returning Tue, Feb 24, priced at $823 found 2 days ago

Find the cheapest month to fly from Barcelona (BCN) to St. Louis (STL)

February is typically the cheapest month to fly

From $579 - $1,105 per traveler.

Frequently asked questions

How much does a flight from Barcelona Intl. Airport (BCN) to Lambert-St. Louis Intl. Airport (STL) cost?
Grab a cheap one-way flight from $497 or cheap return flight from $748 from Barcelona Intl. Airport (BCN) to Lambert-St. Louis Intl. Airport (STL) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Barcelona Intl. Airport (BCN) to Lambert-St. Louis Intl. Airport (STL)?
Flying in March is a great way to save, as it's the cheapest month for flights between BCN and STL. You'll usually find the lowest fares during the off-season.
What is the cheapest airline that flies from Barcelona Intl. Airport (BCN) to Lambert-St. Louis Intl. Airport (STL)?
To find the cheapest airline flying from BCN to STL, use Expedia's filter tool. Customize your search based on your travel needs, such as preferred carriers and cabin class. You can then sort your results by "Price (lowest to highest)" to see the most affordable options first.
How many flights per day from Barcelona Intl. Airport (BCN) to Lambert-St. Louis Intl. Airport (STL)?
There aren't any daily nonstop flights departing from Barcelona Intl. Airport (BCN) to Lambert-St. Louis Intl. Airport (STL). But you can book flights with layovers. Filter your search on Expedia to include one or more stops, and you'll be on your way before you know it.
What day of the week has the most flights from BCN to STL?
Usually you'll find the largest variety of flight choices on a Friday. Tuesdays are often the quietest.* But this can change depending on the season, carrier and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Barcelona Intl. Airport (BCN) to Lambert-St. Louis Intl. Airport (STL)?
Book a flight from Barcelona Intl. Airport (BCN) to Lambert-St. Louis Intl. Airport (STL) that leaves before 3 PM to reduce the risk of cancellations and delays. Departures after this time have a 22% higher chance of being canceled, on average.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Barcelona Intl. Airport (BCN) to Lambert-St. Louis Intl. Airport (STL) last-minute?
Last-minute fares from BCN to STL are usually more expensive. For the best prices, start searching for flights as early as possible. That said, if you're flexible with your travel plans, it's possible to land a cheap fare right before your trip.
Is it cheaper to book a BCN to STL flight and hotel package?
Securing a BCN to STL flight and hotel package is generally cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Choose from our impressive range of stays and then add activities, car rentals and flights to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Barcelona Intl. Airport (BCN) to Lambert-St. Louis Intl. Airport (STL)?
If you booked your BCN to STL flight within the last 24 hours, you may be able to modify or cancel it at no cost. Depending on the airline and the ticket type you purchased, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Barcelona Intl.
Destination airport
Lambert-St. Louis Intl.
Airlines serving
Aer Lingus, Air Canada, Air France, American Airlines, Austrian Airlines, British Airways, Brussels Airlines, Delta, Finnair, Iberia, KLM, Lufthansa, United, Virgin Atlantic
Roundtrip price
$748
Distance
4640 mi

Book with confidence

Barcelona to St. Louis Flights

The cheapest times to fly from Barcelona to St. Louis

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Barcelona to St. Louis are during the month of March. You can find some of the cheapest flights from Barcelona to St. Louis with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Barcelona to St. Louis

Sunday is one of the best days to book for cheap flights from Barcelona to St. Louis: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Barcelona to St. Louis

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Barcelona to St. Louis in 2025. You can also book with separate airlines for your outbound and return journeys, from $497 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Barcelona to St. Louis flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Barcelona to St. Louis airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Barcelona to St. Louis Flights

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*Available to One Key members.