Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from St. Louis to Barcelona from $242

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 7/28. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from St. Louis to Barcelona

Cheap round-trip flights

Enter your travel dates to find the best prices.
British Airways Logo
12:25 pm - 2:15 pm
STL
-
BCN
18h 50m
2 stops
British Airways Logo
6:35 pm - 7:30 pm
BCN
-
STL
31h 55m
1 stop
$481British Airways
Tue, Apr 14 - Tue, Apr 28
British Airways Logo
11:44 am - 2:15 pm
STL
-
BCN
19h 31m
2 stops
British Airways Logo
5:25 pm - 7:30 pm
BCN
-
STL
33h 05m
1 stop
$482British Airways
Tue, Apr 14 - Tue, Apr 28
British Airways Logo
2:33 pm - 4:25 pm
STL
-
BCN
18h 52m
2 stops
British Airways Logo
9:20 pm - 4:41 pm
BCN
-
STL
26h 21m
2 stops
$485British Airways
Mon, Apr 13 - Mon, Apr 27
British Airways Logo
2:33 pm - 5:35 pm
STL
-
BCN
20h 02m
2 stops
British Airways Logo
9:20 pm - 5:03 pm
BCN
-
STL
26h 43m
2 stops
$486British Airways
Mon, Apr 13 - Mon, Apr 27
Iberia Logo
9:34 am - 7:35 am
STL
-
BCN
15h 01m
1 stop
Iberia Logo
10:45 am - 10:59 pm
BCN
-
STL
19h 14m
1 stop
$487Iberia
Tue, Apr 14 - Tue, Apr 28
British Airways Logo
7:12 am - 7:35 am
STL
-
BCN
17h 23m
1 stop
British Airways Logo
9:20 pm - 4:00 pm
BCN
-
STL
25h 40m
2 stops
$494British Airways
Mon, Apr 13 - Mon, Apr 27
British Airways Logo
8:03 pm - 10:35 am
STL
-
BCN
31h 32m
1 stop
British Airways Logo
6:35 pm - 7:30 pm
BCN
-
STL
31h 55m
1 stop
$502British Airways
Tue, Apr 14 - Tue, Apr 28
Delta Logo
6:59 pm - 5:05 pm
STL
-
BCN
16h 06m
2 stops
Delta Logo
12:15 pm - 9:05 am
BCN
-
STL
26h 50m
2 stops
$504Delta
Tue, Mar 17 - Tue, Mar 24
Multiple Airlines Logo
4:05 pm - 5:35 pm
STL
-
BCN
19h 30m
2 stops
Multiple Airlines Logo
8:30 pm - 6:00 pm
BCN
-
STL
27h 30m
2 stops
$514Multiple Airlines
Tue, Mar 17 - Tue, Mar 24
Lufthansa Logo
7:00 pm - 5:35 pm
STL
-
BCN
16h 35m
2 stops
Lufthansa Logo
6:40 am - 1:25 pm
BCN
-
STL
13h 45m
1 stop
$516Lufthansa
Tue, Mar 24 - Fri, Apr 10

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
Apr 14
STL4:05 pmLambert-St Louis
32h 55m
2 stops
BCN8:00 amBarcelona-El Prat
Apr 26
BCN6:40 amBarcelona-El Prat
15h 44m
2 stops
STL3:24 pmLambert-St Louis
$546
Air Canada
Apr 17
STL4:05 pmLambert-St Louis
32h 55m
2 stops
BCN8:00 amBarcelona-El Prat
Oct 16
BCN1:15 pmBarcelona-El Prat
32h 03m
2 stops
STL2:18 pmLambert-St Louis
$578
Air Canada
May 9
STL5:23 pmLambert-St Louis
31h 37m
2 stops
BCN8:00 amBarcelona-El Prat
May 20
BCN12:15 pmBarcelona-El Prat
14h 50m
1 stop
STL8:05 pmLambert-St Louis
$627

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
Apr 14
STL12:25 pmLambert-St Louis
18h 50m
2 stops
BCN2:15 pmBarcelona-El Prat
Apr 28
BCN6:35 pmBarcelona-El Prat
31h 55m
1 stop
STL7:30 pmLambert-St Louis
$481
British Airways
Apr 14
STL11:44 amLambert-St Louis
19h 31m
2 stops
BCN2:15 pmBarcelona-El Prat
Apr 28
BCN5:25 pmBarcelona-El Prat
33h 05m
1 stop
STL7:30 pmLambert-St Louis
$482
British Airways
Apr 13
STL2:33 pmLambert-St Louis
18h 52m
2 stops
BCN4:25 pmBarcelona-El Prat
Apr 27
BCN9:20 pmBarcelona-El Prat
26h 21m
2 stops
STL4:41 pmLambert-St Louis
$485

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 February 5, 2026.
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

Tue 4/14

12:25 pm-2:15 pm

2 stops18h 50m

Barcelona-El Prat

Tue 4/28

6:35 pm-7:30 pm

1 stop31h 55m

$481

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Tue 4/14

11:44 am-2:15 pm

2 stops19h 31m

Barcelona-El Prat

Tue 4/28

5:25 pm-7:30 pm

1 stop33h 05m

$482

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Mon 4/13

2:33 pm-4:25 pm

2 stops18h 52m

Barcelona-El Prat

Mon 4/27

9:20 pm-4:41 pm

2 stops26h 21m

$485

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Mon 4/13

2:33 pm-5:35 pm

2 stops20h 02m

Barcelona-El Prat

Mon 4/27

9:20 pm-5:03 pm

2 stops26h 43m

$486

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Tue 4/14

9:34 am-7:35 am

1 stop15h 01m

Barcelona-El Prat

Tue 4/28

10:45 am-10:59 pm

1 stop19h 14m

$487

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Mon 4/13

7:12 am-7:35 am

1 stop17h 23m

Barcelona-El Prat

Mon 4/27

9:20 pm-4:00 pm

2 stops25h 40m

$494

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Tue 4/14

8:03 pm-10:35 am

1 stop31h 32m

Barcelona-El Prat

Tue 4/28

6:35 pm-7:30 pm

1 stop31h 55m

$502

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Tue 3/17

6:59 pm-5:05 pm

2 stops16h 06m

Barcelona-El Prat

Tue 3/24

12:15 pm-9:05 am

2 stops26h 50m

$504

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Tue 3/17

4:05 pm-5:35 pm

2 stops19h 30m

Barcelona-El Prat

Tue 3/24

8:30 pm-6:00 pm

2 stops27h 30m

$514

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Tue 3/24

7:00 pm-5:35 pm

2 stops16h 35m

Barcelona-El Prat

Fri 4/10

6:40 am-1:25 pm

1 stop13h 45m

$516

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 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 January. Flight prices, which tend to average around $505, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of January, then book flights to Barcelona-El Prat Airport from St. Louis during February instead. Flights to Barcelona-El Prat Airport in February, while not as cheap as those in January, still average around $640.

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 $854 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 $657 on momondo.

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

You could potentially save up to 40% 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?

As of February 2026, prices for St. Louis to Barcelona-El Prat Airport flights are approximately 9% 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

Fastest flight time

12h 00m

Direct flights

None
The fastest flight from St. Louis to Barcelona-El Prat Airport takes 12h 00m
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.
Search flight deals

  • 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 12h 00m, 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 $510Free CancellationRating
6.8
7,762 reviews
Search Lufthansa flights
British AirwaysPriceFrom $540Free CancellationRating
6.7
7,716 reviews
Search British Airways flights
United AirlinesPriceFrom $567Free CancellationRating
7.4
9,241 reviews
Search United Airlines flights
DeltaPriceFrom $585Free CancellationRating
7.9
8,157 reviews
Search Delta flights
KLMPriceFrom $590Free CancellationRating
7.7
1,449 reviews
Search KLM flights
Air CanadaPriceFrom $593Free CancellationRating
7.1
10,696 reviews
Search Air Canada flights
American AirlinesPriceFrom $629Free CancellationRating
7.2
11,242 reviews
Search American Airlines flights
IberiaPriceFrom $631Free CancellationRating
7.0
3,104 reviews
Search Iberia 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
Tarragona
El Prat de Llobregat
Castelldefels
L'Hospitalet de Llobregat
Santa Susanna
Calella
Cadaques
Cambrils
Pals
Empuriabrava
Pineda de Mar
Roses
Badalona
Malgrat de Mar
Palafrugell
Tortosa

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

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sat 3/7
Sat 3/14
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Barcelona

Popular cities in Spain

Popular flights according to clicks in the last 7 days on momondo
Flights to Girona Costa Brava Airportfrom $492