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Cheap flights from St. Louis to Barcelona from $272

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 departing on 3/23. 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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Find the cheapest flights from St. Louis to Barcelona

Cheap round-trip flights

Enter your travel dates to find the best prices.
Virgin Atlantic Logo
7:02 pm - 8:40 amSTL-BCN
30h 38m1 stop
Virgin Atlantic Logo
10:55 am - 9:58 pmBCN-STL
18h 03m1 stop
$393Virgin Atlantic
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Mon, Nov 10 - Wed, Nov 26
Virgin Atlantic Logo
7:02 pm - 8:40 amSTL-BCN
30h 38m1 stop
Virgin Atlantic Logo
10:55 am - 6:35 pmBCN-STL
14h 40m1 stop
$405Virgin Atlantic
Find Deal
Mon, Nov 10 - Wed, Nov 26
Virgin Atlantic Logo
1:55 pm - 8:40 amSTL-BCN
11h 45m1 stop
Virgin Atlantic Logo
10:15 am - 6:35 pmBCN-STL
39h 20m2 stops
$426Virgin Atlantic
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Mon, Nov 10 - Wed, Nov 26
Air Canada Logo
4:05 pm - 9:35 amSTL-BCN
34h 30m2 stops
Air Canada Logo
1:35 pm - 3:40 pmBCN-STL
33h 05m2 stops
$463Air Canada
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Sat, Nov 29 - Thu, Dec 11
Air Canada Logo
4:05 pm - 9:05 amSTL-BCN
34h 00m2 stops
Air Canada Logo
1:35 pm - 2:23 pmBCN-STL
31h 48m2 stops
$472Air Canada
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Mon, Dec 1 - Thu, Dec 11
British Airways Logo
2:54 pm - 1:40 pmSTL-BCN
15h 46m2 stops
British Airways Logo
10:40 am - 10:59 pmBCN-STL
19h 19m1 stop
$481British Airways
Find Deal
Tue, Jan 6 - Tue, Jan 13
United Airlines Logo
6:15 am - 9:35 amSTL-BCN
20h 20m2 stops
United Airlines Logo
1:50 pm - 3:29 pmBCN-STL
32h 39m2 stops
$482United Airlines
Find Deal
Mon, Nov 24 - Tue, Dec 2
United Airlines Logo
8:30 am - 5:35 pmSTL-BCN
26h 05m2 stops
United Airlines Logo
1:35 pm - 7:27 pmBCN-STL
36h 52m2 stops
$493United Airlines
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Fri, Jan 9 - Thu, Jan 29
British Airways Logo
2:54 pm - 1:40 pmSTL-BCN
15h 46m2 stops
British Airways Logo
6:40 am - 6:16 pmBCN-STL
18h 36m2 stops
$498British Airways
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Tue, Jan 6 - Tue, Jan 13
American Airlines Logo
2:54 pm - 11:35 amSTL-BCN
13h 41m2 stops
American Airlines Logo
10:40 am - 7:29 pmBCN-STL
15h 49m1 stop
$505American Airlines
Find Deal
Fri, Jan 9 - Thu, Jan 29

Virgin Atlantic flights from St. Louis to Barcelona-El Prat Airport

Our best Virgin Atlantic deals on St. Louis to Barcelona-El Prat Airport flight tickets
Virgin Atlantic
Nov 10
STL7:02 pmLambert-St Louis
30h 38m
1 stop
BCN8:40 amBarcelona-El Prat
Nov 26
BCN10:55 amBarcelona-El Prat
18h 03m
1 stop
STL9:58 pmLambert-St Louis
$393
Find similar
Virgin Atlantic
Nov 10
STL7:02 pmLambert-St Louis
30h 38m
1 stop
BCN8:40 amBarcelona-El Prat
Nov 26
BCN10:55 amBarcelona-El Prat
14h 40m
1 stop
STL6:35 pmLambert-St Louis
$405
Find similar
Virgin Atlantic
Nov 10
STL1:55 pmLambert-St Louis
11h 45m
1 stop
BCN8:40 amBarcelona-El Prat
Nov 26
BCN10:15 amBarcelona-El Prat
39h 20m
2 stops
STL6:35 pmLambert-St Louis
$426
Find similar

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

Our best Lufthansa deals on St. Louis to Barcelona-El Prat Airport flight tickets
Lufthansa
Nov 10
STL6:43 pmLambert-St Louis
16h 02m
2 stops
BCN5:45 pmBarcelona-El Prat
Nov 26
BCN6:50 amBarcelona-El Prat
14h 05m
1 stop
STL1:55 pmLambert-St Louis
$437
Find similar
Lufthansa
Nov 26
STL3:50 pmLambert-St Louis
13h 10m
1 stop
BCN12:00 pmBarcelona-El Prat
Dec 5
BCN6:50 amBarcelona-El Prat
14h 05m
1 stop
STL1:55 pmLambert-St Louis
$448
Find similar
Lufthansa
Nov 24
STL6:43 pmLambert-St Louis
16h 02m
2 stops
BCN5:45 pmBarcelona-El Prat
Dec 2
BCN6:30 pmBarcelona-El Prat
26h 25m
1 stop
STL1:55 pmLambert-St Louis
$452
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Barcelona-El Prat Airport that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated October 27, 2025.
Use the filters below to find and compare flights from St. Louis to Barcelona-El Prat Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Mon 11/10

7:02 pm-8:40 am

1 stop30h 38m

Barcelona-El Prat

Wed 11/26

10:55 am-9:58 pm

1 stop18h 03m

$393

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Mon 11/10

7:02 pm-8:40 am

1 stop30h 38m

Barcelona-El Prat

Wed 11/26

10:55 am-6:35 pm

1 stop14h 40m

$405

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Mon 11/10

1:55 pm-8:40 am

1 stop11h 45m

Barcelona-El Prat

Wed 11/26

10:15 am-6:35 pm

2 stops39h 20m

$426

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Sat 11/29

4:05 pm-9:35 am

2 stops34h 30m

Barcelona-El Prat

Thu 12/11

1:35 pm-3:40 pm

2 stops33h 05m

$463

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Mon 12/1

4:05 pm-9:05 am

2 stops34h 00m

Barcelona-El Prat

Thu 12/11

1:35 pm-2:23 pm

2 stops31h 48m

$472

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Tue 1/6

2:54 pm-1:40 pm

2 stops15h 46m

Barcelona-El Prat

Tue 1/13

10:40 am-10:59 pm

1 stop19h 19m

$481

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Mon 11/24

6:15 am-9:35 am

2 stops20h 20m

Barcelona-El Prat

Tue 12/2

1:50 pm-3:29 pm

2 stops32h 39m

$482

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Fri 1/9

8:30 am-5:35 pm

2 stops26h 05m

Barcelona-El Prat

Thu 1/29

1:35 pm-7:27 pm

2 stops36h 52m

$493

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Tue 1/6

2:54 pm-1:40 pm

2 stops15h 46m

Barcelona-El Prat

Tue 1/13

6:40 am-6:16 pm

2 stops18h 36m

$498

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Fri 1/9

2:54 pm-11:35 am

2 stops13h 41m

Barcelona-El Prat

Thu 1/29

10:40 am-7:29 pm

1 stop15h 49m

$505

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 typical price of a round-trip flight between St. Louis and Barcelona-El Prat Airport?

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 $660, 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 November instead. Flights to Barcelona-El Prat Airport in November, while not as cheap as those in February, still average around $663.

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 weeks ahead of your departure date. In general, you can expect to find flights to Barcelona-El Prat Airport for around $923 when searching 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 $736 on momondo.

Can stopping save me money on St. Louis to Barcelona-El Prat Airport flights?

You could potentially save up to 6% on your flight if you consider stops on a St. Louis to Barcelona-El Prat Airport flight.

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

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

Direct flights

None
There are no direct flights from St. Louis to Barcelona-El Prat Airport. There are no popular flight routes from St. Louis to Barcelona-El Prat Airport.
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  • 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 29m, 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
DeltaPriceFrom $552Free CancellationRating
7.9
7,995 reviews
Search Delta flights
United AirlinesPriceFrom $578Free CancellationRating
7.4
8,997 reviews
Search United Airlines flights
KLMPriceFrom $590Free CancellationRating
7.7
1,406 reviews
Search KLM flights
British AirwaysPriceFrom $602Free CancellationRating
6.7
7,476 reviews
Search British Airways flights
LufthansaPriceFrom $614Free CancellationRating
6.8
7,532 reviews
Search Lufthansa flights
Air CanadaPriceFrom $624Free CancellationRating
7.1
10,367 reviews
Search Air Canada flights
IberiaPriceFrom $631Free CancellationRating
7.0
3,000 reviews
Search Iberia flights
American AirlinesPriceFrom $648Free CancellationRating
7.2
11,031 reviews
Search American 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
Tossa de Mar
Castelldefels
El Prat de Llobregat
L'Hospitalet de Llobregat
Tarragona
Santa Susanna
Cambrils
Cadaques
Empuriabrava
Badalona
Pineda de Mar
Roses
Calella
Pals
Palafrugell
Tortosa
Malgrat de Mar

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.

An easier way to manage your Barcelona-El Prat Airport trip

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