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Cheap flights from Barcelona-El Prat Airport to St. Louis from $404

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Barcelona-El Prat Airport to St. Louis departing on 3/3. 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 Barcelona-El Prat Airport to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
Finnair Logo
11:00 am - 11:56 pm
BCN
-
STL
19h 56m
1 stop
Finnair Logo
11:22 am - 7:05 am
STL
-
BCN
12h 43m
1 stop
$726Finnair
Mon, Feb 23 - Mon, Mar 2
KLM Logo
10:55 am - 9:06 am
BCN
-
STL
29h 11m
1 stop
KLM Logo
6:47 pm - 4:30 pm
STL
-
BCN
14h 43m
2 stops
$732KLM
Mon, Feb 23 - Mon, Mar 2
Finnair Logo
11:00 am - 11:56 pm
BCN
-
STL
19h 56m
1 stop
Finnair Logo
11:22 am - 7:05 am
STL
-
BCN
12h 43m
1 stop
$735Finnair
Mon, Feb 23 - Mon, Mar 2
Lufthansa Logo
10:30 am - 8:23 pm
BCN
-
STL
16h 53m
1 stop
Lufthansa Logo
6:55 pm - 5:45 pm
STL
-
BCN
15h 50m
2 stops
$756Lufthansa
Mon, Feb 23 - Mon, Mar 2
United Airlines Logo
6:50 am - 10:59 pm
BCN
-
STL
23h 09m
2 stops
United Airlines Logo
9:55 am - 9:00 am
STL
-
BCN
16h 05m
2 stops
$769United Airlines
Mon, Feb 23 - Mon, Mar 2
Multiple Airlines Logo
1:00 pm - 11:36 pm
BCN
-
STL
17h 36m
2 stops
Multiple Airlines Logo
3:47 pm - 2:00 pm
STL
-
BCN
15h 13m
2 stops
$780Multiple Airlines
Mon, Feb 23 - Mon, Mar 2
United Airlines Logo
10:30 am - 10:59 pm
BCN
-
STL
19h 29m
2 stops
United Airlines Logo
9:55 am - 9:00 am
STL
-
BCN
16h 05m
2 stops
$785United Airlines
Mon, Feb 23 - Mon, Mar 2
United Airlines Logo
6:40 am - 1:25 pm
BCN
-
STL
13h 45m
1 stop
United Airlines Logo
10:00 am - 1:15 pm
STL
-
BCN
20h 15m
1 stop
$830United Airlines
Fri, Apr 10 - Fri, Apr 17
United Airlines Logo
6:40 am - 7:22 pm
BCN
-
STL
19h 42m
2 stops
United Airlines Logo
9:10 am - 9:00 am
STL
-
BCN
16h 50m
2 stops
$836United Airlines
Fri, Apr 10 - Fri, Apr 17
Delta Logo
6:20 am - 9:14 pm
BCN
-
STL
21h 54m
2 stops
Delta Logo
6:40 am - 8:45 am
STL
-
BCN
19h 05m
2 stops
$844Delta
Thu, May 21 - Sun, May 24

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

Our best Delta deals on Barcelona-El Prat Airport to St. Louis flight tickets
Delta
Feb 16
BCN6:00 amBarcelona-El Prat
21h 41m
2 stops
STL8:41 pmLambert-St Louis
Mar 3
STL10:13 amLambert-St Louis
20h 47m
2 stops
BCN2:00 pmBarcelona-El Prat
$829
Delta
Feb 16
BCN6:00 amBarcelona-El Prat
24h 23m
2 stops
STL11:23 pmLambert-St Louis
Mar 3
STL11:55 amLambert-St Louis
13h 45m
1 stop
BCN8:40 amBarcelona-El Prat
$832
Delta
May 21
BCN6:20 amBarcelona-El Prat
21h 54m
2 stops
STL9:14 pmLambert-St Louis
May 24
STL6:40 amLambert-St Louis
19h 05m
2 stops
BCN8:45 amBarcelona-El Prat
$844

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

Our best Lufthansa deals on Barcelona-El Prat Airport to St. Louis flight tickets
Lufthansa
Feb 23
BCN10:30 amBarcelona-El Prat
16h 53m
1 stop
STL8:23 pmLambert-St Louis
Mar 2
STL6:55 pmLambert-St Louis
15h 50m
2 stops
BCN5:45 pmBarcelona-El Prat
$756
Lufthansa
Feb 16
BCN11:00 amBarcelona-El Prat
19h 59m
1 stop
STL11:59 pmLambert-St Louis
Mar 3
STL12:15 pmLambert-St Louis
13h 05m
1 stop
BCN8:20 amBarcelona-El Prat
$913
Lufthansa
Feb 15
BCN11:00 amBarcelona-El Prat
19h 59m
1 stop
STL11:59 pmLambert-St Louis
Feb 21
STL11:39 amLambert-St Louis
14h 21m
1 stop
BCN9:00 amBarcelona-El Prat
$934

momondo Fare Finder

 
Customize your flight search to find flights from Barcelona-El Prat Airport to St. Louis 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 8, 2026.
Use the filters below to find and compare flights from Barcelona-El Prat Airport to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BarcelonaSt. Louis

BCN - STL

BCNSTL

Barcelona-El Prat

Mon 2/23

11:00 am-11:56 pm

1 stop19h 56m

Lambert-St Louis

Mon 3/2

11:22 am-7:05 am

1 stop12h 43m

$726

BarcelonaSt. Louis

BCN - STL

BCNSTL

Barcelona-El Prat

Mon 2/23

10:55 am-9:06 am

1 stop29h 11m

Lambert-St Louis

Mon 3/2

6:47 pm-4:30 pm

2 stops14h 43m

$732

BarcelonaSt. Louis

BCN - STL

BCNSTL

Barcelona-El Prat

Mon 2/23

11:00 am-11:56 pm

1 stop19h 56m

Lambert-St Louis

Mon 3/2

11:22 am-7:05 am

1 stop12h 43m

$735

BarcelonaSt. Louis

BCN - STL

BCNSTL

Barcelona-El Prat

Mon 2/23

10:30 am-8:23 pm

1 stop16h 53m

Lambert-St Louis

Mon 3/2

6:55 pm-5:45 pm

2 stops15h 50m

$756

BarcelonaSt. Louis

BCN - STL

BCNSTL

Barcelona-El Prat

Mon 2/23

6:50 am-10:59 pm

2 stops23h 09m

Lambert-St Louis

Mon 3/2

9:55 am-9:00 am

2 stops16h 05m

$769

BarcelonaSt. Louis

BCN - STL

BCNSTL

Barcelona-El Prat

Mon 2/23

1:00 pm-11:36 pm

2 stops17h 36m

Lambert-St Louis

Mon 3/2

3:47 pm-2:00 pm

2 stops15h 13m

$780

BarcelonaSt. Louis

BCN - STL

BCNSTL

Barcelona-El Prat

Mon 2/23

10:30 am-10:59 pm

2 stops19h 29m

Lambert-St Louis

Mon 3/2

9:55 am-9:00 am

2 stops16h 05m

$785

BarcelonaSt. Louis

BCN - STL

BCNSTL

Barcelona-El Prat

Fri 4/10

6:40 am-1:25 pm

1 stop13h 45m

Lambert-St Louis

Fri 4/17

10:00 am-1:15 pm

1 stop20h 15m

$830

BarcelonaSt. Louis

BCN - STL

BCNSTL

Barcelona-El Prat

Fri 4/10

6:40 am-7:22 pm

2 stops19h 42m

Lambert-St Louis

Fri 4/17

9:10 am-9:00 am

2 stops16h 50m

$836

BarcelonaSt. Louis

BCN - STL

BCNSTL

Barcelona-El Prat

Thu 5/21

6:20 am-9:14 pm

2 stops21h 54m

Lambert-St Louis

Sun 5/24

6:40 am-8:45 am

2 stops19h 05m

$844

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to St. Louis from

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

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

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

You could potentially save up to 19% on your flight if you consider stops on a Barcelona-El Prat Airport to St. Louis flight.

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

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

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

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

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

Fastest flight time

12h 56m

Direct flights

None
The fastest flight from Barcelona-El Prat Airport to St. Louis takes 12h 56m
There are no direct flights from Barcelona-El Prat Airport to St. Louis. There are no popular flight routes from Barcelona-El Prat Airport to St. Louis.
Search flight deals

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

    The distance between Barcelona-El Prat and Lambert-St Louis is about 4635.1 mi. In terms of flight time, this usually takes a little over 12h 56m.

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

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

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Barcelona-El Prat Airport to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The travel and health documents required for your trip to Lambert-St Louis 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 Lambert-St Louis Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Hermann
Fairview Heights
Maryland Heights
Florissant
O'Fallon
Collinsville
St. Peters
Fenton
Wentzville
Alton
Farmington
Clayton
Edwardsville
Eureka
Festus
Litchfield
Glencoe
Shrewsbury

Why use momondo?

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

It is quick and easy to find Barcelona to St. Louis flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to St. Louis that suits you.

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

Yes. momondo enables you to select and highlight flights to St. Louis from Barcelona with this policy.

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

momondo helps you find the best flight between Barcelona and St. Louis by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

If you are simply researching potential flights to St. Louis, momondo offers a useful price alert feature which will track prices for flights to St. Louis from Barcelona and alert you when they change.

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