STL - BCN

£551 Find Cheap Flights from St. Louis to Barcelona – Compare and Save

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1 adult, Economy, 0 bags

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Everything you should know

Cheapest return flight
£551
Typical prices: £547-£890
United Airlines
Sun 30/12Mon 15/1
STL - BCN • 1 stop
Cheapest one-way flight
£750
Typical prices: £300-£485
Multiple Airlines
Mon 26/2
STL - BCN • 3 stops
Direct flights
There are currently no direct flights between St. Louis and Barcelona-El Prat Airport. You'll need to take a connecting flight to reach the destination.
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When to book
in advance
Our data shows that travellers who book at least 22 weeks in advance save around 32% compared to booking last minute.
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When to travel
Cheapest • 35% price drop
Most popular
Good to know
+1
Good to know
+1
Top stopover airports
Cheapest • Avg £601 (return)
Shortest trip • 12h 43m (one-way)
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We hope you enjoy your trip to Barcelona-El Prat Airport!
Flight Deals
Booking Insights
Flight Deals

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

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from St. Louis to Barcelona-El Prat

Wed, 30 Dec - Fri, 15 Jan
United Airlines Logo
13:25 - 09:00STL  Lambert-St Louis-BCN Barcelona-El Prat
12h 35m1 stop Washington, D.C. Dulles Intl
United Airlines Logo
13:35 - 23:20BCN  Barcelona-El Prat-STL Lambert-St Louis
40h 45m2 stops Montreal Pierre Elliott Trudeau Intl Chicago O'Hare Intl
£551United Airlines
Wed, 2 Dec - Wed, 9 Dec
United Airlines Logo
06:00 - 08:20STL  Lambert-St Louis-BCN Barcelona-El Prat
19h 20m1 stop Newark
United Airlines Logo
13:35 - 22:15BCN  Barcelona-El Prat-STL Lambert-St Louis
39h 40m2 stops Montreal Pierre Elliott Trudeau Intl Newark
£552United Airlines
Wed, 30 Dec - Fri, 15 Jan
Multiple Airlines Logo
10:45 - 09:35STL  Lambert-St Louis-BCN Barcelona-El Prat
15h 50m2 stops Chicago O'Hare Intl Montreal Pierre Elliott Trudeau Intl
Multiple Airlines Logo
13:35 - 19:28BCN  Barcelona-El Prat-STL Lambert-St Louis
36h 53m2 stops Montreal Pierre Elliott Trudeau Intl Chicago O'Hare Intl
£554Multiple Airlines
Wed, 2 Dec - Wed, 9 Dec
United Airlines Logo
08:30 - 09:00STL  Lambert-St Louis-BCN Barcelona-El Prat
17h 30m1 stop Washington, D.C. Dulles Intl
United Airlines Logo
06:50 - 13:45BCN  Barcelona-El Prat-STL Lambert-St Louis
13h 55m1 stop Frankfurt am Main
£561United Airlines
Mon, 23 Nov - Wed, 9 Dec
Multiple Airlines Logo
08:30 - 09:00STL  Lambert-St Louis-BCN Barcelona-El Prat
17h 30m2 stops Chicago O'Hare Intl Washington, D.C. Dulles Intl
Multiple Airlines Logo
13:35 - 14:41BCN  Barcelona-El Prat-STL Lambert-St Louis
32h 06m2 stops Montreal Pierre Elliott Trudeau Intl Chicago O'Hare Intl
£564Multiple Airlines
Wed, 2 Dec - Wed, 9 Dec
KLM Logo
14:33 - 08:40STL  Lambert-St Louis-BCN Barcelona-El Prat
11h 07m1 stop Atlanta Hartsfield-Jackson
KLM Logo
10:50 - 21:38BCN  Barcelona-El Prat-STL Lambert-St Louis
17h 48m1 stop Atlanta Hartsfield-Jackson
£567KLM
Mon, 12 Apr - Fri, 23 Apr
United Airlines Logo
13:27 - 13:15STL  Lambert-St Louis-BCN Barcelona-El Prat
16h 48m1 stop Chicago O'Hare Intl
United Airlines Logo
12:15 - 12:40BCN  Barcelona-El Prat-STL Lambert-St Louis
31h 25m2 stops Montreal Pierre Elliott Trudeau Intl Newark
£568United Airlines
Mon, 12 Apr - Fri, 23 Apr
United Airlines Logo
13:27 - 13:15STL  Lambert-St Louis-BCN Barcelona-El Prat
16h 48m1 stop Chicago O'Hare Intl
United Airlines Logo
12:15 - 12:40BCN  Barcelona-El Prat-STL Lambert-St Louis
31h 25m2 stops Montreal Pierre Elliott Trudeau Intl Newark
£569United Airlines
Wed, 2 Dec - Wed, 9 Dec
Virgin Atlantic Logo
10:14 - 08:35STL  Lambert-St Louis-BCN Barcelona-El Prat
15h 21m2 stops Detroit Metropolitan Wayne County New York John F Kennedy Intl
Virgin Atlantic Logo
10:35 - 23:26BCN  Barcelona-El Prat-STL Lambert-St Louis
19h 51m2 stops New York John F Kennedy Intl Minneapolis St Paul
£570Virgin Atlantic
Mon, 1 Mar - Thu, 4 Mar
United Airlines Logo
06:30 - 09:35STL  Lambert-St Louis-BCN Barcelona-El Prat
20h 05m2 stops Newark Montreal Pierre Elliott Trudeau Intl
United Airlines Logo
13:35 - 14:17BCN  Barcelona-El Prat-STL Lambert-St Louis
31h 42m2 stops Montreal Pierre Elliott Trudeau Intl Chicago O'Hare Intl
£571United Airlines
Booking Insights

Price, demand, and travel trends for St. Louis to Barcelona-El Prat Airport flights

Use KAYAK data on prices, travel dates, airlines, and seasonal trends to compare options and book flights with more confidence.

How much is a return flight from St. Louis to Barcelona-El Prat Airport?

Return flights from St. Louis to Barcelona-El Prat Airport typically range from £547 to £890. The lowest price found in the past 5 days was £551 on United Airlines.

What's the cheapest day of the week to fly from St. Louis to Barcelona-El Prat Airport?

Based on deals KAYAK users found in the last 12 months, Monday is the cheapest day of the week to fly from St. Louis to Barcelona-El Prat Airport. It’s 25% cheaper than the average day, while Friday is the most expensive, with prices 12% higher.

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

•April is the cheapest month to fly from St. Louis to Barcelona-El Prat Airport at £477 return.
•June (£1,097) and July (£850) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 130% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are flights from St. Louis to Barcelona-El Prat Airport the cheapest?

Flights from St. Louis to Barcelona-El Prat Airport are cheapest 22 weeks before departure. Booking in this window typically costs about 32% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Key details for St. Louis to Barcelona-El Prat Airport flights

Low season

January

Cheapest flight

£551
Beat the crowds with an average 68% drop in traveller numbers.
The most popular month to fly with an average 50% increase in traveller numbers.
Round-trip flight from St. Louis to Barcelona-El Prat Airport

When to book flights from St. Louis to Barcelona-El Prat

Are your dates flexible? Find out the best times to travel from St. Louis to Barcelona-El Prat based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price

Your St. Louis to Barcelona-El Prat Airport flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines, and booking tips.

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

    A direct flight from St. Louis to Barcelona-El Prat Airport takes 00m, covering 4,638 miles.

  • Do I need a passport to fly from St. Louis to Barcelona-El Prat Airport?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • How much should I expect to pay for a St. Louis to Barcelona-El Prat Airport flight?

    Return flights from St. Louis to Barcelona-El Prat Airport range from £547 to £890, with an average of £731 over the past 12 months. Anything below £547 counts as a good deal.

  • How expensive are last-minute St. Louis to Barcelona-El Prat Airport flights?

    Last-minute fares on this route (booked within two weeks of departure) are 15% below the route average of £731. Booking late can sometimes save you money, but availability is limited.

  • How are flight prices from St. Louis to Barcelona-El Prat Airport looking right now?

    One-way fares from St. Louis to Barcelona-El Prat Airport are currently higher than usual. Average one-way flight prices are about £6,405, which is 1,503% above the typical average for this route.

  • Which car hire options are available at Barcelona-El Prat Airport (BCN)?

    Barcelona-El Prat Airport (BCN) hosts 5 major car hire companies, with daily rates starting from around £1 for economy cars. Top options include:

    • Record go
    • NIZACARS
    • Goldcar Rental SP
    • CLICK RENT
    • DRIVALIA

  • Which airports can I use when flying from St. Louis to Barcelona-El Prat Airport?

    Flights from St. Louis to Barcelona-El Prat Airport usually depart from Lambert-St Louis (STL) and arrive at Barcelona-El Prat (BCN).

  • Which airports do connecting flights from St. Louis to Barcelona-El Prat Airport pass through?

    One-stop flights from St. Louis to Barcelona-El Prat Airport most commonly connect through:

    • Montreal Pierre Elliott Trudeau Intl (YUL) – 23% of one-stop connections
    • Philadelphia (PHL) – 23% of one-stop connections
    • Atlanta Hartsfield-Jackson (ATL) – 15% of one-stop connections
    • Chicago O'Hare Intl (ORD) – 13% of one-stop connections

  • Can I save money by using flexible dates for flights from St. Louis to Barcelona-El Prat Airport?

    Yes. Flexible dates can save you up to 33% on flights from St. Louis to Barcelona-El Prat Airport. Monday is the cheapest departure day at £554 return on average, while Friday is the most expensive at £824, a difference of £270.

    KAYAK's flexible dates feature shows options up to three days before and after your selected dates, making it easier to compare nearby fares.

  • How much time can I save by choosing a different stopover airport from St. Louis to Barcelona-El Prat Airport?

    Flying via Chicago O'Hare Intl (ORD) gives the shortest average 1-stop total travel time of 12h 43m, compared to 12h 51m via Toronto Pearson Intl (YYZ) and 12h 52m via Montreal Pierre Elliott Trudeau Intl (YUL).

  • What is the time difference between St. Louis and Barcelona-El Prat Airport?

    Barcelona-El Prat Airport is 7 hours ahead of St. Louis (Central European Time vs Central Time). Plan for the time shift when scheduling connections or first-day activities.

  • What popular places can I visit in Barcelona-El Prat Airport?

    Some of the most popular sights in Barcelona-El Prat Airport are La Rambla, Placa de Catalunya, and Sagrada Familia. These are among the most viewed places in Barcelona-El Prat Airport on KAYAK.

  • What is the carry-on policy on Lufthansa Airlines?

    If you are traveling in Economy, you are allowed one carry-on bag and one personal item. With a Business or First Class ticket, you can bring two bags onboard. The personal item should not be bigger than 11.8 × 15.7 × 3.9 inches in size, while the bags must not exceed 21.6 × 15.7 × 9 inches in dimensions.

  • Is Delta an eco-friendly airline?

    Delta is one of the most sustainable airlines in the aviation world. In attempts to minimize the impact of their services on the environment, it has invested in a modern fuel-efficient fleet, sustainable aviation fuel (SAF) development, and efficient waste management and recycling programs. Additionally, it has partnered with several environmental groups.

  • What is the easiest way to travel from Barcelona El Prat Airport (BCN) using public transport?

    Taking a bus from the airport is the easiest way to get to the city center if you don’t have a car. There are three available bus transits from the airport: Aerobus, bus number 46, and the night bus N16, N17, or N18. The buses can be found in Terminal 1 and Terminal 2.

  • Can I rent a car at Barcelona El Prat Airport (BCN)?

    At BCN, you can rent a car of your choice with ease. This is because in both of its Terminals, there are counters for Avis, Budget, Enterprise, InterRent, Hertz, Thrifty, Sixt, Firefly, and Goldcar. The pickup lot for the terminals is a short distance from the terminals. Because of the locations of the counters and pickup lot, you won’t need ground transportation to get to either.

Your guide to booking St. Louis to Barcelona-El Prat Airport flights

Get tips on when to book, when to fly, and what to know before your trip.
  • If your dates are flexible, aim for a Monday departure and avoid flying on Friday. On this route, Monday flights average £554, about £270 less than Friday fares (33% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 22 weeks before you fly. On this route, that window historically saves about 32% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your St. Louis to Barcelona-El Prat Airport trip for April. Fares historically average £477 return in that month – typically £620 less than the most expensive month, which is June (based on the last 12 months).
  • The airlines that serve flights from Lambert St Louis International Airport (STL) to Barcelona El Prat Airport (BCN) have varying layover destinations. Hence, your layover destination will be determined by the airline you travel with. If you travel with American Air Lines, your stopover will be in Philadelphia, and if you choose to fly with Lufthansa, you will lay over in Frankfurt. If you decide to board a two-stop Delta Air Lines flight, your layovers will be in Detroit and Paris.
  • Lambert St Louis International Airport has two passenger terminals: Terminal 1 and Terminal 2. Terminal 1 has five Concourses: A, B, C, D, and E, while Terminal 2 has only one concourse, E. On your STL flight to BCN, you are likely to depart from Terminal 1. With Lufthansa, you will depart from T1, Concourse D; with American Airlines, you depart from T1, Concourse E; and with Delta Air Lines, you will depart from T1, Concourse A.
  • Suppose you want to travel to BCN aboard a Lufthansa airline with an infant. If that is the case, your infant can travel on your lap at a heavily discounted ticket fare. For safety, flight attendants provide the baby with a safety belt before take-off. You are encouraged to reserve a bassinet for your flight 52 hours prior for proper planning. Changing tables and spare diapers are available on board.
  • If you intend to bring a drink on your STL flight to BCN, you should be aware that most airlines only allow it if the liquid is in a 3.4-oz container. The container should be carried in a plastic, transparent, and resealable bag that does not exceed one liter in size.
  • If you are a passenger with limited mobility, you don’t have to worry about struggling in STL. This is because the airport offers wheelchair services upon request, with trained staff members always ready to assist physically challenged passengers at all times. The airport also features ramps, wheelchair accessible washrooms, and accessible parking spots close to the terminals for people with reduced mobility.

More options for your flight from St. Louis to Barcelona-El Prat

Complete your trip to Barcelona with a hotel stay or car hire