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Cheap flights from Barcelona-El Prat Airport to St. Louis from $413

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 1/16. 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.
British Airways Logo
10:40 am - 7:29 pm
BCN
-
STL
15h 49m1 stop
British Airways Logo
5:12 pm - 4:30 pm
STL
-
BCN
16h 18m2 stops
$769British Airways
Wed, Jan 14 - Wed, Jan 21
British Airways Logo
6:40 am - 6:14 pm
BCN
-
STL
18h 34m2 stops
British Airways Logo
3:54 pm - 2:40 pm
STL
-
BCN
15h 46m2 stops
$775British Airways
Wed, Jan 14 - Wed, Jan 21
Delta Logo
6:00 am - 8:37 pm
BCN
-
STL
21h 37m2 stops
Delta Logo
9:59 am - 2:00 pm
STL
-
BCN
21h 01m2 stops
$777Delta
Thu, Jan 15 - Mon, Jan 19
KLM Logo
11:10 am - 8:43 pm
BCN
-
STL
16h 33m2 stops
KLM Logo
6:57 pm - 8:40 am
STL
-
BCN
30h 43m1 stop
$779KLM
Thu, Jan 15 - Mon, Jan 19
Iberia Logo
10:40 am - 10:55 pm
BCN
-
STL
19h 15m1 stop
Iberia Logo
9:25 am - 8:50 am
STL
-
BCN
16h 25m1 stop
$780Iberia
Wed, Jan 14 - Wed, Jan 21
American Airlines Logo
10:40 am - 7:29 pm
BCN
-
STL
15h 49m1 stop
American Airlines Logo
11:55 am - 8:50 am
STL
-
BCN
13h 55m1 stop
$781American Airlines
Thu, Jan 15 - Mon, Jan 19
Virgin Atlantic Logo
10:15 am - 8:37 pm
BCN
-
STL
17h 22m2 stops
Virgin Atlantic Logo
6:57 pm - 8:40 am
STL
-
BCN
30h 43m1 stop
$782Virgin Atlantic
Thu, Jan 15 - Mon, Jan 19
Lufthansa Logo
11:55 am - 11:59 pm
BCN
-
STL
19h 04m2 stops
Lufthansa Logo
11:22 am - 9:00 am
STL
-
BCN
14h 38m1 stop
$790Lufthansa
Wed, Jan 14 - Wed, Jan 21
American Airlines Logo
12:30 pm - 11:12 pm
BCN
-
STL
17h 42m2 stops
American Airlines Logo
10:17 am - 9:00 am
STL
-
BCN
15h 43m2 stops
$794American Airlines
Wed, Jan 14 - Wed, Jan 21
Iberia Logo
1:30 pm - 9:03 am
BCN
-
STL
26h 33m2 stops
Iberia Logo
11:55 am - 8:50 am
STL
-
BCN
13h 55m1 stop
$797Iberia
Thu, Jan 15 - Mon, Jan 19

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
Jan 22
BCN11:00 amBarcelona-El Prat
18h 58m
2 stops
STL10:58 pmLambert-St Louis
Jan 26
STL11:20 amLambert-St Louis
14h 40m
2 stops
BCN9:00 amBarcelona-El Prat
$804
Find similar
United Airlines
Jan 22
BCN11:00 amBarcelona-El Prat
17h 13m
2 stops
STL9:13 pmLambert-St Louis
Jan 26
STL6:30 amLambert-St Louis
19h 30m
2 stops
BCN9:00 amBarcelona-El Prat
$880
Find similar
United Airlines
Dec 28
BCN5:50 amBarcelona-El Prat
15h 05m
1 stop
STL1:55 pmLambert-St Louis
Jan 8
STL9:57 amLambert-St Louis
16h 03m
2 stops
BCN9:00 amBarcelona-El Prat
$939
Find similar

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

Our best Iberia deals on Barcelona-El Prat Airport to St. Louis flight tickets
Iberia
Jan 14
BCN10:40 amBarcelona-El Prat
19h 15m
1 stop
STL10:55 pmLambert-St Louis
Jan 21
STL9:25 amLambert-St Louis
16h 25m
1 stop
BCN8:50 amBarcelona-El Prat
$780
Find similar
Iberia
Jan 31
BCN10:40 amBarcelona-El Prat
19h 19m
1 stop
STL10:59 pmLambert-St Louis
Feb 7
STL11:55 amLambert-St Louis
13h 55m
1 stop
BCN8:50 amBarcelona-El Prat
$813
Find similar
Iberia
Jan 31
BCN10:40 amBarcelona-El Prat
19h 19m
1 stop
STL10:59 pmLambert-St Louis
Feb 7
STL9:25 amLambert-St Louis
16h 25m
1 stop
BCN8:50 amBarcelona-El Prat
$816
Find similar

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 December 18, 2025.
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

Wed 1/14

10:40 am-7:29 pm

1 stop15h 49m

Lambert-St Louis

Wed 1/21

5:12 pm-4:30 pm

2 stops16h 18m

$769

BarcelonaSt. Louis

BCN - STL

BCNSTL

Barcelona-El Prat

Wed 1/14

6:40 am-6:14 pm

2 stops18h 34m

Lambert-St Louis

Wed 1/21

3:54 pm-2:40 pm

2 stops15h 46m

$775

BarcelonaSt. Louis

BCN - STL

BCNSTL

Barcelona-El Prat

Thu 1/15

6:00 am-8:37 pm

2 stops21h 37m

Lambert-St Louis

Mon 1/19

9:59 am-2:00 pm

2 stops21h 01m

$777

BarcelonaSt. Louis

BCN - STL

BCNSTL

Barcelona-El Prat

Thu 1/15

11:10 am-8:43 pm

2 stops16h 33m

Lambert-St Louis

Mon 1/19

6:57 pm-8:40 am

1 stop30h 43m

$779

BarcelonaSt. Louis

BCN - STL

BCNSTL

Barcelona-El Prat

Wed 1/14

10:40 am-10:55 pm

1 stop19h 15m

Lambert-St Louis

Wed 1/21

9:25 am-8:50 am

1 stop16h 25m

$780

BarcelonaSt. Louis

BCN - STL

BCNSTL

Barcelona-El Prat

Thu 1/15

10:40 am-7:29 pm

1 stop15h 49m

Lambert-St Louis

Mon 1/19

11:55 am-8:50 am

1 stop13h 55m

$781

BarcelonaSt. Louis

BCN - STL

BCNSTL

Barcelona-El Prat

Thu 1/15

10:15 am-8:37 pm

2 stops17h 22m

Lambert-St Louis

Mon 1/19

6:57 pm-8:40 am

1 stop30h 43m

$782

BarcelonaSt. Louis

BCN - STL

BCNSTL

Barcelona-El Prat

Wed 1/14

11:55 am-11:59 pm

2 stops19h 04m

Lambert-St Louis

Wed 1/21

11:22 am-9:00 am

1 stop14h 38m

$790

BarcelonaSt. Louis

BCN - STL

BCNSTL

Barcelona-El Prat

Wed 1/14

12:30 pm-11:12 pm

2 stops17h 42m

Lambert-St Louis

Wed 1/21

10:17 am-9:00 am

2 stops15h 43m

$794

BarcelonaSt. Louis

BCN - STL

BCNSTL

Barcelona-El Prat

Thu 1/15

1:30 pm-9:03 am

2 stops26h 33m

Lambert-St Louis

Mon 1/19

11:55 am-8:50 am

1 stop13h 55m

$797

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 cheapest month to fly to St. Louis?

In general, February 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 $684. The month of March is another great option to travel to St. Louis, with average flight prices from Barcelona-El Prat Airport averaging around $720.

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

You could potentially save up to 64% 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

30h 38m

Direct flights

None
The fastest flight from Barcelona-El Prat Airport to St. Louis takes 30h 38m
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 30h 38m.

  • 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
O'Fallon
Florissant
Fenton
Wentzville
St. Peters
Collinsville
Alton
Clayton
Festus
Glencoe
Farmington
Eureka
Edwardsville
Litchfield
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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