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Cheap flights from St. Louis to Barcelona-El Prat Airport from $475

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Barcelona-El Prat Airport departing on 10/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap round-trip flights

KAYAK's recommended round-trip deals from the most popular airlines that fly from St. Louis to Barcelona.
Delta Logo
6:00 am - 6:00 amSTL-BCN
17h 00m1 stop
Delta Logo
11:35 am - 11:39 pmBCN-STL
19h 04m1 stop
$572Delta
Find Deal
Wed, Sep 17 - Thu, Oct 2
Delta Logo
6:00 am - 6:00 amSTL-BCN
17h 00m1 stop
Delta Logo
9:30 am - 8:50 pmBCN-STL
18h 20m2 stops
$577Delta
Find Deal
Wed, Sep 17 - Fri, Oct 3
Delta Logo
3:30 pm - 2:50 pmSTL-BCN
16h 20m2 stops
Delta Logo
11:35 am - 11:39 pmBCN-STL
19h 04m1 stop
$590Delta
Find Deal
Wed, Sep 17 - Thu, Oct 2
Air Canada Logo
1:30 pm - 7:50 amSTL-BCN
11h 20m1 stop
Air Canada Logo
12:15 pm - 2:19 pmBCN-STL
33h 04m2 stops
$595Air Canada
Find Deal
Fri, Sep 19 - Thu, Oct 2
Air Canada Logo
4:05 pm - 7:50 amSTL-BCN
32h 45m2 stops
Air Canada Logo
12:15 pm - 2:19 pmBCN-STL
33h 04m2 stops
$601Air Canada
Find Deal
Thu, Sep 18 - Fri, Oct 3
British Airways Logo
7:59 pm - 10:45 pmSTL-BCN
43h 46m2 stops
British Airways Logo
10:15 am - 8:21 pmBCN-STL
17h 06m2 stops
$605British Airways
Find Deal
Tue, Sep 16 - Tue, Sep 30
British Airways Logo
7:59 pm - 10:10 amSTL-BCN
31h 11m1 stop
British Airways Logo
12:20 pm - 10:27 pmBCN-STL
17h 07m1 stop
$638British Airways
Find Deal
Tue, Sep 16 - Tue, Sep 30
United Airlines Logo
6:35 am - 1:15 pmSTL-BCN
23h 40m1 stop
United Airlines Logo
12:10 pm - 2:19 pmBCN-STL
33h 09m2 stops
$660United Airlines
Find Deal
Sun, Sep 14 - Tue, Sep 30
United Airlines Logo
9:20 am - 8:20 amSTL-BCN
16h 00m2 stops
United Airlines Logo
12:15 pm - 7:57 pmBCN-STL
14h 42m1 stop
$716United Airlines
Find Deal
Thu, Sep 25 - Mon, Oct 6
American Airlines Logo
5:25 am - 7:35 amSTL-BCN
19h 10m1 stop
American Airlines Logo
6:30 pm - 9:31 amBCN-STL
22h 01m1 stop
$1,232American Airlines
Find Deal
Wed, Jun 25 - Mon, Jun 30

Delta flights from St. Louis to Barcelona-El Prat Airport

Our best Delta deals on St. Louis to Barcelona-El Prat Airport flight tickets
Delta
Sep 17
STL6:00 amLambert-St Louis
17h 00m
1 stop
BCN6:00 amBarcelona-El Prat
Oct 2
BCN11:35 amBarcelona-El Prat
19h 04m
1 stop
STL11:39 pmLambert-St Louis
Delta
Sep 17
STL6:00 amLambert-St Louis
17h 00m
1 stop
BCN6:00 amBarcelona-El Prat
Oct 3
BCN9:30 amBarcelona-El Prat
18h 20m
2 stops
STL8:50 pmLambert-St Louis
Delta
Sep 17
STL3:30 pmLambert-St Louis
16h 20m
2 stops
BCN2:50 pmBarcelona-El Prat
Oct 2
BCN11:35 amBarcelona-El Prat
19h 04m
1 stop
STL11:39 pmLambert-St Louis

Air Canada flights from St. Louis to Barcelona-El Prat Airport

Our best Air Canada deals on St. Louis to Barcelona-El Prat Airport flight tickets
Air Canada
Sep 19
STL1:30 pmLambert-St Louis
11h 20m
1 stop
BCN7:50 amBarcelona-El Prat
Oct 2
BCN12:15 pmBarcelona-El Prat
33h 04m
2 stops
STL2:19 pmLambert-St Louis
Air Canada
Sep 18
STL4:05 pmLambert-St Louis
32h 45m
2 stops
BCN7:50 amBarcelona-El Prat
Oct 3
BCN12:15 pmBarcelona-El Prat
33h 04m
2 stops
STL2:19 pmLambert-St Louis
Air Canada
Sep 19
STL1:30 pmLambert-St Louis
11h 20m
1 stop
BCN7:50 amBarcelona-El Prat
Oct 2
BCN12:15 pmBarcelona-El Prat
14h 42m
1 stop
STL7:57 pmLambert-St Louis

See travel insights to Barcelona from

How to get the cheapest flight ticket from St. Louis to Barcelona-El Prat Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Barcelona-El Prat Airport?

The cheapest month to fly to Barcelona-El Prat Airport from St. Louis is in February. Flight prices, which tend to average around $684, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of February, then book flights to Barcelona-El Prat Airport from St. Louis during January instead. Flights to Barcelona-El Prat Airport in January, while not as cheap as those in February, still average around $773.

What is the cheapest day to depart on your flight to Barcelona-El Prat Airport?

The cheapest day to depart on your flight to Barcelona-El Prat Airport is on a Tuesday when prices can be found for as low as $867. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Thursday because tickets tend to average around $1,135. These prices are subject to change though, so be sure to set up a Price Alert for flights to Barcelona-El Prat Airport.

What is the cheapest time of day to depart on your flight to Barcelona-El Prat Airport?

Flying to Barcelona-El Prat Airport from St. Louis in the morning is the least expensive time of day to depart. momondo users have found prices as low as $905 when looking at flights departing in the morning. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $1,043 on average. Flights to Barcelona-El Prat Airport from St. Louis in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

How far in advance should I book a flight to Barcelona-El Prat Airport?

You are more likely to see cheaper flights to Barcelona-El Prat Airport from St. Louis when booking 19 weeks ahead of your departure date. In general, you can expect to find flights to Barcelona-El Prat Airport for around $981 when searching 19 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Barcelona-El Prat Airport from St. Louis for as low as $829 on momondo.

How have St. Louis to Barcelona-El Prat Airport flight prices changed over time?

As of April 2025, prices for St. Louis to Barcelona-El Prat Airport flights are approximately 3% cheaper when compared to flights at the same time last year.

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

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to Barcelona-El Prat Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap St. Louis to Barcelona-El Prat Airport (STL to BCN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Barcelona-El Prat Airport

Best Price Found

$475

Fastest flight time

11h 07m

Direct flights

None
The best one-way flight to Barcelona-El Prat Airport from St. Louis in the past 72 hours is $475. The best round-trip flight deal from St. Louis to Barcelona-El Prat Airport found on momondo in the last 72 hours is $572.
The fastest flight from St. Louis to Barcelona-El Prat Airport takes 11h 07m
There are no direct flights from St. Louis to Barcelona-El Prat Airport. Popular non-direct route for this connection is Lambert-St Louis Airport - Barcelona-El Prat Airport.

  • How far is Lambert-St Louis to Barcelona-El Prat by plane?

    There are 4635.1 mi between Lambert-St Louis and Barcelona-El Prat. Flights usually cover this in 11h 07m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Lambert-St Louis Airport to Barcelona-El Prat Airport?

    Prices for flights from Lambert-St Louis Airport to Barcelona-El Prat Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Lambert-St Louis Airport to Barcelona-El Prat Airport?

  • How old do you have to be to fly from Lambert-St Louis Airport to Barcelona-El Prat Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Lambert-St Louis Airport to Barcelona-El Prat Airport.

  • What documentation or ID do you need to fly to Barcelona-El Prat Airport?

    The travel and health documents required for your trip to Barcelona-El Prat Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Barcelona-El Prat Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from St. Louis to Barcelona-El Prat Airport?


Best airlines flying from St. Louis to Barcelona-El Prat Airport

Compare and see reviews for airlines that fly from St. Louis to Barcelona-El Prat Airport with momondo
Airline
Rating
Free Cancellation
Price
LufthansaPriceFrom $530Free CancellationRating
6.7
7,012 reviews
Search Lufthansa flights
KLMPriceFrom $540Free CancellationRating
7.8
1,329 reviews
Search KLM flights
Air FrancePriceFrom $571Free CancellationRating
7.5
1,435 reviews
Search Air France flights
British AirwaysPriceFrom $602Free CancellationRating
6.6
6,767 reviews
Search British Airways flights
DeltaPriceFrom $602Free CancellationRating
8.0
7,917 reviews
Search Delta flights
American AirlinesPriceFrom $632Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
IberiaPriceFrom $689Free CancellationRating
7.0
2,676 reviews
Search Iberia flights
Air CanadaPriceFrom $712Free CancellationRating
7.0
9,142 reviews
Search Air Canada flights
United AirlinesPriceFrom $716Free CancellationRating
7.4
8,667 reviews
Search United Airlines flights

Traveling to a place near Barcelona?

Book flights to Barcelona if you plan to visit one of these locations
Lloret de Mar
Sitges
Salou
El Prat de Llobregat
L'Hospitalet de Llobregat
Tarragona
Castelldefels
Badalona
Santa Susanna
Calella
Tossa de Mar
Malgrat de Mar
Empuriabrava
Cambrils
Pineda de Mar
Roses
Cadaques
Palafrugell
La Pineda
Calella de Palafrugell

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Barcelona?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from St. Louis to Barcelona. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from St. Louis to Barcelona with flexible booking policies on momondo?

Flights from St. Louis to Barcelona with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from St. Louis to Barcelona?

Once all potential St. Louis to Barcelona flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from St. Louis to Barcelona right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of St. Louis to Barcelona flights. All you need is a valid email address and we will do the rest; it is that quick and easy.


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