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Cheap flights from Barcelona-El Prat Airport to St. Louis 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 Barcelona-El Prat Airport to St. Louis departing on 8/25. 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
1 adult, Economy, 0 bags

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.
Scandinavian Airlines Logo
7:00 pm - 11:58 pm
BCN
-
STL
35h 58m
2 stops
Scandinavian Airlines Logo
1:04 pm - 6:10 pm
STL
-
BCN
22h 06m
2 stops
$841Scandinavian Airlines
Sun, Aug 30 - Sat, Sep 5
Multiple Airlines Logo
3:45 pm - 9:30 am
BCN
-
STL
48h 45m
2 stops
Multiple Airlines Logo
8:35 am - 2:45 pm
STL
-
BCN
23h 10m
2 stops
$879Multiple Airlines
Mon, Sep 7 - Mon, Sep 14
Lufthansa Logo
6:40 am - 1:25 pm
BCN
-
STL
13h 45m
1 stop
Lufthansa Logo
8:40 am - 8:20 am
STL
-
BCN
16h 40m
1 stop
$882Lufthansa
Tue, Sep 8 - Tue, Sep 15
Lufthansa Logo
6:40 am - 1:25 pm
BCN
-
STL
13h 45m
1 stop
Lufthansa Logo
12:59 pm - 1:15 pm
STL
-
BCN
17h 16m
1 stop
$884Lufthansa
Sun, Sep 6 - Sat, Sep 12
Lufthansa Logo
6:40 am - 1:25 pm
BCN
-
STL
13h 45m
1 stop
Lufthansa Logo
12:28 pm - 11:55 am
STL
-
BCN
16h 27m
2 stops
$887Lufthansa
Tue, Sep 8 - Tue, Sep 15
Lufthansa Logo
6:40 am - 1:25 pm
BCN
-
STL
13h 45m
1 stop
Lufthansa Logo
6:53 pm - 6:15 pm
STL
-
BCN
16h 22m
2 stops
$889Lufthansa
Sun, Sep 6 - Sat, Sep 12
Air Canada Logo
12:15 pm - 6:42 pm
BCN
-
STL
13h 27m
1 stop
Air Canada Logo
8:55 am - 8:00 am
STL
-
BCN
16h 05m
2 stops
$890Air Canada
Thu, Aug 27 - Mon, Aug 31
Air Canada Logo
12:15 pm - 8:24 pm
BCN
-
STL
15h 09m
2 stops
Air Canada Logo
8:55 am - 8:00 am
STL
-
BCN
16h 05m
2 stops
$898Air Canada
Thu, Aug 27 - Mon, Aug 31
Lufthansa Logo
6:40 am - 1:25 pm
BCN
-
STL
13h 45m
1 stop
Lufthansa Logo
12:59 pm - 1:15 pm
STL
-
BCN
17h 16m
1 stop
$902Lufthansa
Sun, Aug 30 - Sat, Sep 5
Multiple Airlines Logo
6:40 am - 1:25 pm
BCN
-
STL
13h 45m
1 stop
Multiple Airlines Logo
12:59 pm - 9:20 am
STL
-
BCN
13h 21m
2 stops
$906Multiple Airlines
Mon, Sep 7 - Mon, Sep 14

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

Our best United Airlines deals on Barcelona-El Prat Airport to St. Louis flight tickets
United Airlines
Sep 8
BCN6:40 amBarcelona-El Prat
19h 01m
2 stops
STL6:41 pmLambert-St Louis
Sep 15
STL11:15 amLambert-St Louis
14h 45m
2 stops
BCN9:00 amBarcelona-El Prat
$912
United Airlines
Sep 8
BCN6:40 amBarcelona-El Prat
19h 01m
2 stops
STL6:41 pmLambert-St Louis
Sep 15
STL11:15 amLambert-St Louis
14h 45m
2 stops
BCN9:00 amBarcelona-El Prat
$913
United Airlines
Aug 30
BCN6:40 amBarcelona-El Prat
13h 45m
1 stop
STL1:25 pmLambert-St Louis
Sep 5
STL4:50 pmLambert-St Louis
33h 10m
1 stop
BCN9:00 amBarcelona-El Prat
$917

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
Sep 8
BCN6:40 amBarcelona-El Prat
13h 45m
1 stop
STL1:25 pmLambert-St Louis
Sep 15
STL8:40 amLambert-St Louis
16h 40m
1 stop
BCN8:20 amBarcelona-El Prat
$882
Lufthansa
Sep 6
BCN6:40 amBarcelona-El Prat
13h 45m
1 stop
STL1:25 pmLambert-St Louis
Sep 12
STL12:59 pmLambert-St Louis
17h 16m
1 stop
BCN1:15 pmBarcelona-El Prat
$884
Lufthansa
Sep 8
BCN6:40 amBarcelona-El Prat
13h 45m
1 stop
STL1:25 pmLambert-St Louis
Sep 15
STL12:28 pmLambert-St Louis
16h 27m
2 stops
BCN11:55 amBarcelona-El Prat
$887

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 July 26, 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

Cheapest round-trip

BarcelonaSt. Louis

BCN - STL

BCNSTL

Barcelona-El Prat

Sun 8/30

7:00 pm-11:58 pm

2 stops35h 58m

Lambert-St Louis

Sat 9/5

1:04 pm-6:10 pm

2 stops22h 06m

$841

BarcelonaSt. Louis

BCN - STL

BCNSTL

Barcelona-El Prat

Mon 9/7

3:45 pm-9:30 am

2 stops48h 45m

Lambert-St Louis

Mon 9/14

8:35 am-2:45 pm

2 stops23h 10m

$879

BarcelonaSt. Louis

BCN - STL

BCNSTL

Barcelona-El Prat

Tue 9/8

6:40 am-1:25 pm

1 stop13h 45m

Lambert-St Louis

Tue 9/15

8:40 am-8:20 am

1 stop16h 40m

$882

BarcelonaSt. Louis

BCN - STL

BCNSTL

Barcelona-El Prat

Sun 9/6

6:40 am-1:25 pm

1 stop13h 45m

Lambert-St Louis

Sat 9/12

12:59 pm-1:15 pm

1 stop17h 16m

$884

BarcelonaSt. Louis

BCN - STL

BCNSTL

Barcelona-El Prat

Tue 9/8

6:40 am-1:25 pm

1 stop13h 45m

Lambert-St Louis

Tue 9/15

12:28 pm-11:55 am

2 stops16h 27m

$887

BarcelonaSt. Louis

BCN - STL

BCNSTL

Barcelona-El Prat

Sun 9/6

6:40 am-1:25 pm

1 stop13h 45m

Lambert-St Louis

Sat 9/12

6:53 pm-6:15 pm

2 stops16h 22m

$889

BarcelonaSt. Louis

BCN - STL

BCNSTL

Barcelona-El Prat

Thu 8/27

12:15 pm-6:42 pm

1 stop13h 27m

Lambert-St Louis

Mon 8/31

8:55 am-8:00 am

2 stops16h 05m

$890

BarcelonaSt. Louis

BCN - STL

BCNSTL

Barcelona-El Prat

Thu 8/27

12:15 pm-8:24 pm

2 stops15h 09m

Lambert-St Louis

Mon 8/31

8:55 am-8:00 am

2 stops16h 05m

$898

BarcelonaSt. Louis

BCN - STL

BCNSTL

Barcelona-El Prat

Sun 8/30

6:40 am-1:25 pm

1 stop13h 45m

Lambert-St Louis

Sat 9/5

12:59 pm-1:15 pm

1 stop17h 16m

$902
Quickest round-trip

BarcelonaSt. Louis

BCN - STL

BCNSTL

Barcelona-El Prat

Mon 9/7

6:40 am-1:25 pm

1 stop13h 45m

Lambert-St Louis

Mon 9/14

12:59 pm-9:20 am

2 stops13h 21m

$906

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

What is the typical price of a round-trip flight between Barcelona-El Prat Airport and St. Louis?

Prices are currently low for flights on this route.

Typical prices usually range from $1,104 to $1,344.
The lowest price recently found on this route was $841.

What is the cheapest month to fly to St. Louis?

In general, December is the cheapest month to fly from Barcelona-El Prat Airport to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $0. The month of June is another great option to travel to St. Louis, with average flight prices from Barcelona-El Prat Airport averaging around $0.

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

You could potentially save up to 24% 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

13h 27m

Direct flights

None
The fastest flight from Barcelona-El Prat Airport to St. Louis takes 13h 27m
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

Frequently asked questions about flying from Barcelona-El Prat Airport to St. Louis

  • 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 13h 27m.

  • 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
Fairview Heights
Hermann
St. Peters
Maryland Heights
Florissant
Collinsville
O'Fallon
Alton
Fenton
Farmington
Clayton
Wentzville
Festus
Eureka
Litchfield
Edwardsville
Grafton
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.

An easier way to manage your St. Louis trip

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