$244 Cheap Flights from St. Louis (STL) to Barcelona (BCN)

View $244 flight on Sun, Sep 20, 2026Opens in a new window

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

  • notification illustration

    Be in the know

    Get alerts if flight prices drop or rise*
  • deals illustration

    Book smarter

    Save up to 30% on select hotels after you book a flight*
  • trophy illustration

    Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

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

Prices were available within the past 7 days and start at $244 for one-way flights and $434 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Virgin Atlantic
Tue, Jan 20 - Fri, Jan 30
STL
St. Louis
BCN
Barcelona
$434 Roundtrip, just found
$434
Roundtrip
just found
Select Virgin Atlantic flight, departing Tue, Jan 20 from St. Louis to Barcelona, returning Fri, Jan 30, priced at $434 just found
Virgin Atlantic
Mon, Dec 29 - Tue, Jan 13
STL
St. Louis
BCN
Barcelona
$438 Roundtrip, found 5 hours ago
$438
Roundtrip
found 5 hours ago
Select Virgin Atlantic flight, departing Mon, Dec 29 from St. Louis to Barcelona, returning Tue, Jan 13, priced at $438 found 5 hours ago
Virgin Atlantic
Tue, Nov 18 - Thu, Dec 18
STL
St. Louis
BCN
Barcelona
$449 Roundtrip, found 16 hours ago
$449
Roundtrip
found 16 hours ago
Select Virgin Atlantic flight, departing Tue, Nov 18 from St. Louis to Barcelona, returning Thu, Dec 18, priced at $449 found 16 hours ago
Delta
Wed, Nov 26 - Thu, Dec 4
STL
St. Louis
BCN
Barcelona
$453 Roundtrip, found 4 hours ago
$453
Roundtrip
found 4 hours ago
Select Delta flight, departing Wed, Nov 26 from St. Louis to Barcelona, returning Thu, Dec 4, priced at $453 found 4 hours ago
Delta
Mon, Jan 12 - Tue, Jan 20
STL
St. Louis
BCN
Barcelona
$457 Roundtrip, found 8 hours ago
$457
Roundtrip
found 8 hours ago
Select Delta flight, departing Mon, Jan 12 from St. Louis to Barcelona, returning Tue, Jan 20, priced at $457 found 8 hours ago
Virgin Atlantic
Tue, Jan 20 - Sun, Jan 25
STL
St. Louis
BCN
Barcelona
$459 Roundtrip, just found
$459
Roundtrip
just found
Select Virgin Atlantic flight, departing Tue, Jan 20 from St. Louis to Barcelona, returning Sun, Jan 25, priced at $459 just found
KLM
Wed, Dec 31 - Wed, Jan 14
STL
St. Louis
BCN
Barcelona
$460 Roundtrip, found 1 day ago
$460
Roundtrip
found 1 day ago
Select KLM flight, departing Wed, Dec 31 from St. Louis to Barcelona, returning Wed, Jan 14, priced at $460 found 1 day ago
Air Canada
Sun, Jan 18 - Tue, Jan 27
STL
St. Louis
BCN
Barcelona
$461 Roundtrip, found 14 hours ago
$461
Roundtrip
found 14 hours ago
Select Air Canada flight, departing Sun, Jan 18 from St. Louis to Barcelona, returning Tue, Jan 27, priced at $461 found 14 hours ago
United
Sun, Nov 16 - Wed, Nov 26
STL
St. Louis
BCN
Barcelona
$476 Roundtrip, found 2 hours ago
$476
Roundtrip
found 2 hours ago
Select United flight, departing Sun, Nov 16 from St. Louis to Barcelona, returning Wed, Nov 26, priced at $476 found 2 hours ago
Lufthansa
Wed, Nov 5 - Wed, Nov 12
STL
St. Louis
BCN
Barcelona
$482 Roundtrip, found 2 hours ago
$482
Roundtrip
found 2 hours ago
Select Lufthansa flight, departing Wed, Nov 5 from St. Louis to Barcelona, returning Wed, Nov 12, priced at $482 found 2 hours ago

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

November is typically the cheapest month to fly

From $469 - $1,529 per traveler.

Alternative airports near Barcelona

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Barcelona Intl. BCN. Cheapest and Closest option available. Average driving time to city center is 18 minutes. Flights from $461
BCN
Barcelona Intl.
CheapestClosest
Average driving time to city center18 min
Flights from $461

Frequently asked questions

How much does a flight from Lambert-St. Louis Intl. Airport (STL) to Barcelona Intl. Airport (BCN) cost?
Get a cheap one-way flight from $244 or cheap return flight from $434 from Lambert-St. Louis Intl. Airport (STL) to Barcelona Intl. Airport (BCN) 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 Lambert-St. Louis Intl. Airport (STL) to Barcelona Intl. Airport (BCN)?
The cheapest month to fly from STL to BCN is January, when demand is low. Off-peak season is often when better flight deals are available between these airports.
What is the cheapest airline that flies from Lambert-St. Louis Intl. Airport (STL) to Barcelona Intl. Airport (BCN)?
Expedia's filter tool lets you easily compare different airlines, flight durations and fares all in one place. Tailor the search to your trip, then sort by "Price (lowest to highest)" to see which carrier offers the cheapest STL to BCN flight.
How many flights per day from Lambert-St. Louis Intl. Airport (STL) to Barcelona Intl. Airport (BCN)?
Direct flights from Lambert-St. Louis Intl. Airport (STL) to Barcelona Intl. Airport (BCN) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filters. Enter your travel dates and choose either "1 Stop" or "2+ Stops."
What day of the week has the most flights from STL to BCN?
You'll typically find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can change from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Lambert-St. Louis Intl. Airport (STL) to Barcelona Intl. Airport (BCN)?
To avoid potential delays on the Lambert-St. Louis Intl. Airport (STL) to Barcelona Intl. Airport (BCN) route, aim to travel before 3 PM. Later departures have a 22% higher chance of cancellation.**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 Lambert-St. Louis Intl. Airport (STL) to Barcelona Intl. Airport (BCN) last-minute?
Last-minute bookings from STL to BCN are generally more expensive. To secure the cheapest rates, start searching for flights as soon as possible. That said, if you're flexible with your travel dates, you may find a cheap fare right before your trip.
Is it cheaper to book a STL to BCN flight and hotel package?
Compared with arranging flights and hotels separately, booking a STL to BCN flight and hotel package with Expedia could result in significant savings. Better still, having everything in one place will take the stress out of planning your trip. Just pick your flights and select from our wide range of hotels, then customize your trip with other add-ons like activities, tours and car rentals.
Can I cancel or change the date of my flight from Lambert-St. Louis Intl. Airport (STL) to Barcelona Intl. Airport (BCN)?
It's generally possible to reschedule or cancel your STL to BCN flight. However, if it's been more than 24 hours since booking, additional charges may apply. Check your airline's policies in your itinerary to see what changes are allowed and whether any costs are involved. You'll also find more details on our Customer Service portal.

Travel information

Origin airport
Lambert-St. Louis Intl.
Destination airport
Barcelona Intl.
Airlines serving
Aer Lingus, Air Canada, Air France, American Airlines, Austrian Airlines, British Airways, Brussels Airlines, Delta, Finnair, Iberia, KLM, Lufthansa, Scandinavian Airlines, United, Virgin Atlantic
Roundtrip price
$433
Distance
4640 mi

Book with confidence

St. Louis to Barcelona Flights

The cheapest times to fly from St. Louis to Barcelona

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 St. Louis to Barcelona are during the month of January. You can find some of the cheapest flights from St. Louis to Barcelona with Expedia's search tool and vast selection of airlines.

 

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

Sunday is one of the best days to book for cheap flights from St. Louis to Barcelona: 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 St. Louis to Barcelona

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 St. Louis to Barcelona in 2025. You can also book with separate airlines for your outbound and return journeys, from $244 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 St. Louis to Barcelona 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 St. Louis to Barcelona 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.

 

St. Louis to Barcelona Flights

Explore a world of travel with Expedia

*Available to One Key members.