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Cheap flights from St. Louis to Barcelona-El Prat Airport from $418

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 7/18. 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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0 bags

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Find the cheapest flights from St. Louis to Barcelona

Cheap round-trip flights

KAYAK's recommended round-trip deals from the most popular airlines that fly from St. Louis to Barcelona.
2:30 pm - 7:50 amSTL-BCN
34h 20m2 stops
12:15 pm - 3:30 pmBCN-STL
34h 15m2 stops
$770Air Canada
Find Deal
Sat, May 10 - Fri, May 23
4:23 pm - 10:30 amSTL-BCN
11h 07m1 stop
10:45 am - 4:08 pmBCN-STL
12h 23m1 stop
$780British Airways
Find Deal
Mon, Aug 25 - Thu, Sep 4
4:23 pm - 12:15 pmSTL-BCN
12h 52m2 stops
2:00 pm - 11:23 pmBCN-STL
16h 23m2 stops
$795American Airlines
Find Deal
Mon, Aug 25 - Thu, Sep 4
1:45 pm - 9:05 amSTL-BCN
12h 20m1 stop
10:45 am - 9:52 pmBCN-STL
18h 07m1 stop
$825Iberia
Find Deal
Tue, May 6 - Mon, May 12
8:00 am - 7:50 amSTL-BCN
16h 50m2 stops
12:10 pm - 3:47 pmBCN-STL
34h 37m3 stops
$828United Airlines
Find Deal
Tue, May 6 - Mon, May 12
1:30 pm - 7:50 amSTL-BCN
11h 20m1 stop
6:00 am - 3:47 pmBCN-STL
16h 47m2 stops
$862United Airlines
Find Deal
Sun, May 11 - Sun, May 18
12:27 pm - 10:10 amSTL-BCN
14h 43m1 stop
2:00 pm - 8:13 pmBCN-STL
13h 13m1 stop
$913Iberia
Find Deal
Mon, Jul 21 - Fri, Aug 8
12:51 pm - 9:20 amSTL-BCN
13h 29m1 stop
6:20 am - 4:47 pmBCN-STL
17h 27m2 stops
$930Delta
Find Deal
Fri, Apr 25 - Sun, May 4
5:37 pm - 5:10 pmSTL-BCN
16h 33m2 stops
9:00 am - 8:39 pmBCN-STL
18h 39m2 stops
$933Delta
Find Deal
Thu, Apr 24 - Mon, May 5
7:35 am - 10:30 amSTL-BCN
19h 55m1 stop
6:30 pm - 8:40 amBCN-STL
21h 10m1 stop
$1,186American Airlines
Find Deal
Thu, Apr 24 - Mon, May 5

British Airways flights from St. Louis to Barcelona-El Prat Airport

Our best British Airways deals on St. Louis to Barcelona-El Prat Airport flight tickets
British Airways
Aug 25
STL4:23 pmLambert-St Louis
11h 07m
1 stop
BCN10:30 amBarcelona-El Prat
Sep 4
BCN10:45 amBarcelona-El Prat
12h 23m
1 stop
STL4:08 pmLambert-St Louis
British Airways
Aug 25
STL2:49 pmLambert-St Louis
14h 16m
2 stops
BCN12:05 pmBarcelona-El Prat
Sep 4
BCN10:45 amBarcelona-El Prat
19h 40m
1 stop
STL11:25 pmLambert-St Louis
British Airways
May 6
STL7:30 pmLambert-St Louis
16h 00m
2 stops
BCN6:30 pmBarcelona-El Prat
May 12
BCN9:10 pmBarcelona-El Prat
28h 11m
2 stops
STL6:21 pmLambert-St Louis

American Airlines flights from St. Louis to Barcelona-El Prat Airport

Our best American Airlines deals on St. Louis to Barcelona-El Prat Airport flight tickets
American Airlines
Aug 25
STL4:23 pmLambert-St Louis
12h 52m
2 stops
BCN12:15 pmBarcelona-El Prat
Sep 4
BCN2:00 pmBarcelona-El Prat
16h 23m
2 stops
STL11:23 pmLambert-St Louis
American Airlines
Apr 24
STL7:35 amLambert-St Louis
19h 55m
1 stop
BCN10:30 amBarcelona-El Prat
May 5
BCN6:30 pmBarcelona-El Prat
21h 10m
1 stop
STL8:40 amLambert-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 $761.

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 5 weeks ahead of your departure date. In general, you can expect to find flights to Barcelona-El Prat Airport for around $984 when searching 5 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 $868 on momondo.

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

As of March 2025, prices for St. Louis to Barcelona-El Prat Airport flights are approximately 15% 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

$418

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 $418. The best round-trip flight deal from St. Louis to Barcelona-El Prat Airport found on momondo in the last 72 hours is $770.
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
6,955 reviews
Search Lufthansa flights
KLMPriceFrom $540Free CancellationRating
7.8
1,321 reviews
Search KLM flights
British AirwaysPriceFrom $602Free CancellationRating
6.6
6,712 reviews
Search British Airways flights
DeltaPriceFrom $602Free CancellationRating
8.0
7,895 reviews
Search Delta flights
Air FrancePriceFrom $645Free CancellationRating
7.4
1,424 reviews
Search Air France flights
American AirlinesPriceFrom $648Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
IberiaPriceFrom $689Free CancellationRating
7.0
2,651 reviews
Search Iberia flights
United AirlinesPriceFrom $716Free CancellationRating
7.4
8,603 reviews
Search United Airlines flights
Air CanadaPriceFrom $732Free CancellationRating
7.0
8,981 reviews
Search Air Canada 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
Badalona
Castelldefels
Calella
Tossa de Mar
Santa Susanna
Malgrat de Mar
Cambrils
Pineda de Mar
Empuriabrava
Roses
Cadaques
Palafrugell
Calella de Palafrugell
La Pineda

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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