Cheap Flights from St Louis to Barcelona

Compare St Louis to Barcelona flight deals

Find the cheapest month or even day of the year to fly to Barcelona

Book the best Barcelona fare with no extra fees

Flight deals from St Louis to Barcelona

Looking for a cheap last-minute deal or the best return flight from St Louis to Barcelona? Find the lowest prices on one-way and return tickets right here.

Barcelona.$813 per passenger.Departing Wed, 8 Apr, returning Tue, 14 Apr.Return flight with United.Outbound indirect flight with United, departs from St Louis on Wed, 8 Apr, arriving in Barcelona.Inbound indirect flight with United, departs from Barcelona on Tue, 14 Apr, arriving in St Louis.Price includes taxes and charges.From $813, select.

Barcelona.$928 per passenger.Departing Fri, 18 Sep, returning Fri, 25 Sep.Return flight with Air Canada.Outbound indirect flight with Air Canada, departs from St Louis on Fri, 18 Sep, arriving in Barcelona.Inbound indirect flight with Air Canada, departs from Barcelona on Fri, 25 Sep, arriving in St Louis.Price includes taxes and charges.From $928, select.

Barcelona.$1,001 per passenger.Departing Tue, 17 Mar, returning Tue, 24 Mar.Return flight with Delta.Outbound indirect flight with Delta, departs from St Louis on Tue, 17 Mar, arriving in Barcelona.Inbound indirect flight with Delta, departs from Barcelona on Tue, 24 Mar, arriving in St Louis.Price includes taxes and charges.From $1,001, select.

Barcelona.$1,014 per passenger.Departing Tue, 5 May, returning Wed, 13 May.Return flight with United.Outbound indirect flight with United, departs from St Louis on Tue, 5 May, arriving in Barcelona.Inbound indirect flight with United, departs from Barcelona on Wed, 13 May, arriving in St Louis.Price includes taxes and charges.From $1,014, select.

Barcelona.$1,142 per passenger.Departing Sat, 28 Feb, returning Sun, 8 Mar.Return flight with KLM.Outbound indirect flight with KLM, departs from St Louis on Sat, 28 Feb, arriving in Barcelona.Inbound indirect flight with KLM, departs from Barcelona on Sun, 8 Mar, arriving in St Louis.Price includes taxes and charges.From $1,142, select.

Barcelona.$1,151 per passenger.Departing Tue, 10 Feb, returning Sat, 21 Feb.Return flight with United and SWISS.Outbound indirect flight with United, departs from St Louis on Tue, 10 Feb, arriving in Barcelona.Inbound indirect flight with SWISS, departs from Barcelona on Sat, 21 Feb, arriving in St Louis.Price includes taxes and charges.From $1,151, select.

Barcelona.$1,198 per passenger.Departing Sat, 1 Aug, returning Wed, 12 Aug.Return flight with Air Canada.Outbound indirect flight with Air Canada, departs from St Louis on Sat, 1 Aug, arriving in Barcelona.Inbound indirect flight with Air Canada, departs from Barcelona on Wed, 12 Aug, arriving in St Louis.Price includes taxes and charges.From $1,198, select.

Barcelona.$1,199 per passenger.Departing Thu, 23 Apr, returning Mon, 4 May.Return flight with Delta.Outbound indirect flight with Delta, departs from St Louis on Thu, 23 Apr, arriving in Barcelona.Inbound indirect flight with Delta, departs from Barcelona on Mon, 4 May, arriving in St Louis.Price includes taxes and charges.From $1,199, select.

Find the cheapest month to fly from St Louis to Barcelona

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like St Louis to Barcelona flights are currently cheapest in April.

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Jan

St Louis to Barcelona: Alternative routes

Compare routes from St Louis to Barcelona below. You may find an airport to fly into that's cheaper, faster, or easier than Barcelona.

St Louis to Barcelona: Flight information

The things to know before you go.

Cheapest flight found	$813
Cheapest month to fly	April

Finding cheap flights from St Louis to Barcelona: Frequently asked questions

How much are return flights from St Louis to Barcelona?

The best price we found for a return flight from St Louis to Barcelona is $813. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.

Which airlines fly direct from St Louis to Barcelona?

Currently, there are no airlines that fly direct from St Louis to Barcelona. But we found flights with one or more stops from $813.

How many flights are there a week from St Louis to Barcelona?

As of February 2026, there are no flights flying from St Louis to Barcelona.

When is the cheapest time to fly from St Louis to Barcelona?

The cheapest month to fly from St Louis to Barcelona is usually April.

Which upcoming date is cheapest to fly from St Louis Airport to Barcelona Airport on?

After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from St Louis Airport to Barcelona Airport on Wednesday, 8 April 2026.

Can I get a direct flight from St Louis Airport to Barcelona Airport?

No airlines currently offer direct flights between St Louis Airport and Barcelona Airport. Most routes have one or more stops.

How can I find the best flight deal to Barcelona?

We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Barcelona but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

When is the best time to book flights to Barcelona?

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Barcelona is around 40 days in advance, so don’t leave your flight to the last minute.

Which is the cheapest airline to fly from St Louis Airport to Barcelona with?

Currently, United offers the cheapest flight tickets to Barcelona.

Travelling from Lambert-St. Louis International Airport (STL) to Barcelona-El Prat Airport (BCN): what you need to know

Barcelona's timezone is UTC+1, making Barcelona six hours ahead of St Louis.
Give yourself plenty of time to make your STL to BCN flight. Generally, it's best to arrive two hours before international departures and an hour ahead for domestic flights.
Travelling during a peak time like July? School holidays and other popular seasons can result in longer queues and delays at security. Play it safe and get there up to four hours ahead of international flights and two hours before a domestic departure.
Consider adding a stopover when booking your ticket from Lambert-St. Louis International Airport to Barcelona-El Prat Airport. Simply uncheck 'Direct flights only' to break up your trip, or even explore someplace new along the way. Here are some options between STL and BCN:
- Pearson International Airport
- O'Hare International Airport
- Washington Dulles International Airport

How to find the cheapest flights from Lambert-St. Louis International Airport (STL) to Barcelona-El Prat Airport (BCN)

$395 is currently the lowest price for a one-way Lambert-St. Louis International Airport to Barcelona-El Prat Airport flight. A return flight starts at $813. These prices may change based on demand.
To score cheap tickets from STL to BCN, book early. Airlines usually offer the most competitive fares when flights are first released.
Finding cheap flights from Lambert-St. Louis International Airport to Barcelona-El Prat Airport is easy if you can be flexible with your travel plans. Use the 'Whole month' function to see the lowest prices throughout the month and snap up a great deal.
There's no need to check back in every day to find out if fares have gone down when you create a Price Alert. We'll notify you as soon as a special offer becomes available on cheap flights from STL to BCN.
Choose your ideal arrival and departure times, airlines and number of stops with the filters. Or sort your results by 'Cheapest' to see the best deals on flights from Lambert-St. Louis International Airport to Barcelona-El Prat Airport.

Handy information about Lambert-St. Louis International Airport (STL)

You'll find STL at 10701 Lambert International Blvd..
78.04% of flights that leave from Lambert-St. Louis International Airport arrive at their destination on schedule.
Lambert-St. Louis International Airport is around 26 kilometres from central St Louis. If you're driving, catching a cab or ride-sharing from the centre, it'll take you 20 minutes or so to get there, depending on the traffic.
The trip on public transport usually takes 35 minutes.
Looking for a convenient hotel close to STL? If you've booked an early flight from Lambert-St. Louis International Airport to Barcelona-El Prat Airport, these accommodation options will put you moments from your departure lounge:

Arriving at Barcelona-El Prat Airport (BCN)

The last thing you need is a long trip to your hotel if you're landing late on a Lambert-St. Louis International Airport to Barcelona-El Prat Airport flight. Book one of these accommodation options near BCN instead:
Begin your adventure by picking up a Barcelona-El Prat Airport rental car. Grab your wheels from Record Go, Goldcar or Nizacars Rent A Car and explore beyond Barcelona's main sights.
For the best deal, reserve your vehicle from Barcelona-El Prat Airport about four weeks before you travel.

Getting from Barcelona-El Prat Airport (BCN) to central Barcelona

From Barcelona-El Prat Airport, Barcelona is approximately 18 kilometres away. It takes around 25 minutes to drive to the centre.
It takes roughly 35 minutes to get there by public transport.

When to fly to Barcelona-El Prat Airport (BCN)

It's time to work out your dates for your flight from Lambert-St. Louis International Airport to Barcelona-El Prat Airport. July is the most popular month to head to Barcelona. If you prefer a quieter vibe, go in January.
When reserving your flight from Lambert-St. Louis International Airport to Barcelona-El Prat Airport, consider the kind of weather you enjoy. August is the warmest month in Barcelona, with the temperature ranging from 20ºC to 31ºC.
January sees average temperatures of between 5ºC and 14ºC. Search for cheap tickets from STL to BCN sometime around then if you want to travel in cooler conditions.

Explore more of Spain

Zaragoza is just one of the many places in Spain waiting to be discovered after you've seen Barcelona. Around 257 kilometres away to the west, popular attractions include Puente de Piedra, Museo Pablo Gargallo and El Tubo.
Logroño is another standout destination in Spain and is around 402 kilometres west of Barcelona. No journey is complete without a visit to Concatedral de Santa Maria de la Redonda, Museo de la Rioja and Iglesia de Santiago el Real.