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Cheap flights from Spain to St. Louis from $399

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Spain to St. Louis departing on 7/13. 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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0 bags

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Find the cheapest flights from Spain to St. Louis

Recent round-trip flight deals from Spain to St. Louis

Enter your travel dates to find the best prices.
Multiple Airlines Logo
6:40 am - 1:25 pm
BCN
-
STL
13h 45m
1 stop
Multiple Airlines Logo
1:05 pm - 8:00 am
STL
-
BCN
11h 55m
1 stop
$898Multiple Airlines
Wed, Jun 10 - Sun, Jun 14
Multiple Airlines Logo
10:15 am - 8:25 pm
BCN
-
STL
17h 10m
2 stops
Multiple Airlines Logo
1:05 pm - 8:00 am
STL
-
BCN
11h 55m
1 stop
$906Multiple Airlines
Wed, Jun 10 - Sun, Jun 14
Air Canada Logo
12:45 pm - 8:25 pm
MAD
-
STL
14h 40m
1 stop
Air Canada Logo
1:05 pm - 6:50 am
STL
-
MAD
10h 45m
1 stop
$915Air Canada
Thu, Jun 11 - Mon, Jun 15
Air Canada Logo
12:45 pm - 8:25 pm
MAD
-
STL
14h 40m
1 stop
Air Canada Logo
1:05 pm - 6:50 am
STL
-
MAD
10h 45m
1 stop
$916Air Canada
Thu, Jun 11 - Mon, Jun 15
Air Canada Logo
12:45 pm - 8:25 pm
MAD
-
STL
14h 40m
1 stop
Air Canada Logo
1:05 pm - 6:50 am
STL
-
MAD
10h 45m
1 stop
$918Air Canada
Thu, Jun 11 - Mon, Jun 15
United Airlines Logo
6:40 am - 1:25 pm
BCN
-
STL
13h 45m
1 stop
United Airlines Logo
9:40 am - 1:15 pm
STL
-
BCN
20h 35m
1 stop
$922United Airlines
Fri, Sep 11 - Mon, Sep 14
United Airlines Logo
6:40 am - 1:25 pm
BCN
-
STL
13h 45m
1 stop
United Airlines Logo
12:28 pm - 9:00 am
STL
-
BCN
13h 32m
1 stop
$923United Airlines
Fri, Sep 11 - Mon, Sep 14
Delta Logo
9:20 am - 8:39 pm
BCN
-
STL
18h 19m
2 stops
Delta Logo
1:59 pm - 2:50 pm
STL
-
BCN
17h 51m
2 stops
$933Delta
Fri, Jun 12 - Tue, Jun 16
Delta Logo
10:25 am - 11:23 pm
MAD
-
STL
19h 58m
2 stops
Delta Logo
5:36 pm - 3:35 pm
STL
-
MAD
14h 59m
2 stops
$935Delta
Thu, Jun 11 - Mon, Jun 15
Lufthansa Logo
9:35 am - 11:44 pm
AGP
-
STL
21h 09m
1 stop
Lufthansa Logo
12:23 pm - 7:35 am
STL
-
AGP
12h 12m
1 stop
$1,108Lufthansa
Mon, Jul 6 - Sat, Jul 18

Delta flights from Spain to St. Louis

Our best Delta deals on Spain to St. Louis flight tickets
Delta
Jun 12
BCN9:20 amBarcelona-El Prat
18h 19m
2 stops
STL8:39 pmLambert-St Louis
Jun 16
STL1:59 pmLambert-St Louis
17h 51m
2 stops
BCN2:50 pmBarcelona-El Prat
$933
Delta
Jun 11
MAD10:25 amMadrid Barajas
19h 58m
2 stops
STL11:23 pmLambert-St Louis
Jun 15
STL5:36 pmLambert-St Louis
14h 59m
2 stops
MAD3:35 pmMadrid Barajas
$935
Delta
Jun 12
MAD6:00 amMadrid Barajas
21h 39m
2 stops
STL8:39 pmLambert-St Louis
Jun 19
STL5:36 pmLambert-St Louis
15h 49m
2 stops
MAD4:25 pmMadrid Barajas
$940

United Airlines flights from Spain to St. Louis

Our best United Airlines deals on Spain to St. Louis flight tickets
United Airlines
Sep 11
BCN6:40 amBarcelona-El Prat
13h 45m
1 stop
STL1:25 pmLambert-St Louis
Sep 14
STL9:40 amLambert-St Louis
20h 35m
1 stop
BCN1:15 pmBarcelona-El Prat
$922
United Airlines
Sep 11
BCN6:40 amBarcelona-El Prat
13h 45m
1 stop
STL1:25 pmLambert-St Louis
Sep 14
STL12:28 pmLambert-St Louis
13h 32m
1 stop
BCN9:00 amBarcelona-El Prat
$923
United Airlines
Sep 11
BCN6:40 amBarcelona-El Prat
13h 45m
1 stop
STL1:25 pmLambert-St Louis
Sep 14
STL12:59 pmLambert-St Louis
17h 16m
1 stop
BCN1:15 pmBarcelona-El Prat
$924

momondo Fare Finder

 
Customize your flight search to find flights from Spain 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 May 30, 2026.
Use the filters below to find and compare flights from Spain 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

Wed 6/10

6:40 am-1:25 pm

1 stop13h 45m

Lambert-St Louis

Sun 6/14

1:05 pm-8:00 am

1 stop11h 55m

$898

BarcelonaSt. Louis

BCN - STL

BCNSTL

Barcelona-El Prat

Wed 6/10

10:15 am-8:25 pm

2 stops17h 10m

Lambert-St Louis

Sun 6/14

1:05 pm-8:00 am

1 stop11h 55m

$906
Quickest round-trip

MadridSt. Louis

MAD - STL

MADSTL

Madrid Barajas

Thu 6/11

12:45 pm-8:25 pm

1 stop14h 40m

Lambert-St Louis

Mon 6/15

1:05 pm-6:50 am

1 stop10h 45m

$915

MadridSt. Louis

MAD - STL

MADSTL

Madrid Barajas

Thu 6/11

12:45 pm-8:25 pm

1 stop14h 40m

Lambert-St Louis

Mon 6/15

1:05 pm-6:50 am

1 stop10h 45m

$916

MadridSt. Louis

MAD - STL

MADSTL

Madrid Barajas

Thu 6/11

12:45 pm-8:25 pm

1 stop14h 40m

Lambert-St Louis

Mon 6/15

1:05 pm-6:50 am

1 stop10h 45m

$918

BarcelonaSt. Louis

BCN - STL

BCNSTL

Barcelona-El Prat

Fri 9/11

6:40 am-1:25 pm

1 stop13h 45m

Lambert-St Louis

Mon 9/14

9:40 am-1:15 pm

1 stop20h 35m

$922

BarcelonaSt. Louis

BCN - STL

BCNSTL

Barcelona-El Prat

Fri 9/11

6:40 am-1:25 pm

1 stop13h 45m

Lambert-St Louis

Mon 9/14

12:28 pm-9:00 am

1 stop13h 32m

$923

BarcelonaSt. Louis

BCN - STL

BCNSTL

Barcelona-El Prat

Fri 6/12

9:20 am-8:39 pm

2 stops18h 19m

Lambert-St Louis

Tue 6/16

1:59 pm-2:50 pm

2 stops17h 51m

$933

MadridSt. Louis

MAD - STL

MADSTL

Madrid Barajas

Thu 6/11

10:25 am-11:23 pm

2 stops19h 58m

Lambert-St Louis

Mon 6/15

5:36 pm-3:35 pm

2 stops14h 59m

$935

MálagaSt. Louis

AGP - STL

AGPSTL

Malaga

Mon 7/6

9:35 am-11:44 pm

1 stop21h 09m

Lambert-St Louis

Sat 7/18

12:23 pm-7:35 am

1 stop12h 12m

$1,108

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 Spain 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, April is the cheapest month to fly from Spain to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $526. The month of February is another great option to travel to St. Louis, with average flight prices from Spain averaging around $667.

Can stopping save me money on Spain to St. Louis flights?

You could potentially save up to 26% on your flight if you consider stops on a Spain to St. Louis flight.

Cheap Spain to St. Louis flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Spain to St. Louis

Fastest flight time

13h 27m

Direct flights

None
The fastest flight from Spain to St. Louis takes 13h 27m
There are no direct flights from Spain to St. Louis. There are no popular flight routes from Spain to St. Louis.
Search flight deals

Frequently asked questions about flying from Spain to St. Louis

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

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

  • How old do you have to be to fly from Spain to Lambert-St Louis 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 Spain to Lambert-St Louis Airport.

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

    The required travel and health documents for your Lambert-St Louis Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Lambert-St Louis Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

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

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Spain to St. Louis. Millions of users trust and use momondo every year so you are in good hands.

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

Yes. momondo allows you to filter the results for Spain to St. Louis flights to just show those with flexible booking policies.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Spain to St. Louis.

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

Of course. momondo tracks the price of Spain to St. Louis flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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