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Cheap flights from Spain to St. Louis from $387

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 10/21. 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 Spain to St. Louis

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

Enter your travel dates to find the best prices.
Iberia Logo
10:30 am - 8:44 pmBCN  Barcelona-El Prat-STL Lambert-St Louis
17h 14m1 stop Chicago O'Hare Intl
Iberia Logo
11:31 am - 11:45 amSTL  Lambert-St Louis-BCN Barcelona-El Prat
17h 14m2 stops Chicago O'Hare Intl Madrid Barajas
$849Iberia
Wed, Sep 23 - Thu, Oct 8
Scandinavian Airlines Logo
6:30 pm - 11:42 pmMAD  Madrid Barajas-STL Lambert-St Louis
36h 12m2 stops Kastrup Copenhagen Atlanta Hartsfield-Jackson
Scandinavian Airlines Logo
4:00 pm - 12:00 pmSTL  Lambert-St Louis-MAD Madrid Barajas
37h 00m2 stops Atlanta Hartsfield-Jackson Kastrup Copenhagen
$851Scandinavian Airlines
Wed, Sep 23 - Wed, Nov 4
Multiple Airlines Logo
8:00 am - 7:45 pmBCN  Barcelona-El Prat-STL Lambert-St Louis
18h 45m2 stops Frankfurt am Main Boston Logan Intl
Multiple Airlines Logo
7:00 am - 10:10 pmSTL  Lambert-St Louis-BCN Barcelona-El Prat
32h 10m2 stops Boston Logan Intl Frankfurt am Main
$857Multiple Airlines
Thu, Sep 3 - Mon, Sep 7
Lufthansa Logo
6:40 am - 1:25 pmBCN  Barcelona-El Prat-STL Lambert-St Louis
13h 45m1 stop Frankfurt am Main
Lufthansa Logo
3:30 pm - 4:05 pmSTL  Lambert-St Louis-BCN Barcelona-El Prat
17h 35m1 stop Frankfurt am Main
$881Lufthansa
Mon, Sep 14 - Mon, Sep 21
Lufthansa Logo
6:40 am - 1:25 pmBCN  Barcelona-El Prat-STL Lambert-St Louis
13h 45m1 stop Frankfurt am Main
Lufthansa Logo
3:30 pm - 4:05 pmSTL  Lambert-St Louis-BCN Barcelona-El Prat
17h 35m1 stop Frankfurt am Main
$883Lufthansa
Mon, Sep 14 - Mon, Sep 21
Multiple Airlines Logo
10:05 am - 3:26 pmMAD  Madrid Barajas-STL Lambert-St Louis
36h 21m2 stops Zurich Toronto Pearson Intl
Multiple Airlines Logo
8:33 am - 8:00 amSTL  Lambert-St Louis-MAD Madrid Barajas
16h 27m2 stops Chicago O'Hare Intl Montreal Pierre Elliott Trudeau Intl
$892Multiple Airlines
Sat, Jan 9 - Sat, Jan 16
United Airlines Logo
11:15 am - 9:42 amMAD  Madrid Barajas-STL Lambert-St Louis
29h 27m2 stops Newark Houston George Bush Intcntl
United Airlines Logo
11:45 am - 9:15 amSTL  Lambert-St Louis-MAD Madrid Barajas
14h 30m1 stop Newark
$895United Airlines
Sat, Jan 9 - Sat, Jan 16
Lufthansa Logo
6:50 am - 1:25 pmBIO  Bilbao-STL Lambert-St Louis
13h 35m1 stop Frankfurt am Main
Lufthansa Logo
1:29 pm - 5:00 pmSTL  Lambert-St Louis-BIO Bilbao
20h 31m2 stops Chicago O'Hare Intl Frankfurt am Main
$895Lufthansa
Wed, Sep 16 - Thu, Sep 24
Lufthansa Logo
6:40 am - 1:25 pmBCN  Barcelona-El Prat-STL Lambert-St Louis
13h 45m1 stop Frankfurt am Main
Lufthansa Logo
12:20 pm - 9:00 amSTL  Lambert-St Louis-BCN Barcelona-El Prat
13h 40m1 stop Newark
$901Lufthansa
Wed, Sep 23 - Sat, Oct 3
Multiple Airlines Logo
10:55 am - 8:20 pmMAD  Madrid Barajas-STL Lambert-St Louis
16h 25m2 stops Halifax Intl Toronto Pearson Intl
Multiple Airlines Logo
12:10 pm - 6:50 amSTL  Lambert-St Louis-MAD Madrid Barajas
11h 40m1 stop Montreal Pierre Elliott Trudeau Intl
$902Multiple Airlines
Thu, Sep 10 - Tue, Sep 15

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Lufthansa flights from Spain to St. Louis

Our best Lufthansa deals on Spain to St. Louis flight tickets
Lufthansa
Sep 14
BCN6:40 amBarcelona-El Prat
13h 45m
1 stop
STL1:25 pmLambert-St Louis
Sep 21
STL3:30 pmLambert-St Louis
17h 35m
1 stop
BCN4:05 pmBarcelona-El Prat
$881
Lufthansa
Sep 14
BCN6:40 amBarcelona-El Prat
13h 45m
1 stop
STL1:25 pmLambert-St Louis
Sep 21
STL3:30 pmLambert-St Louis
17h 35m
1 stop
BCN4:05 pmBarcelona-El Prat
$883
Lufthansa
Sep 16
BIO6:50 amBilbao
13h 35m
1 stop
STL1:25 pmLambert-St Louis
Sep 24
STL1:29 pmLambert-St Louis
20h 31m
2 stops
BIO5:00 pmBilbao
$895

Air Canada flights from Spain to St. Louis

Our best Air Canada deals on Spain to St. Louis flight tickets
Air Canada
Sep 3
BCN12:15 pmBarcelona-El Prat
17h 44m
2 stops
STL10:59 pmLambert-St Louis
Sep 7
STL12:59 pmLambert-St Louis
13h 21m
2 stops
BCN9:20 amBarcelona-El Prat
$935
Air Canada
Sep 3
BCN12:15 pmBarcelona-El Prat
13h 27m
1 stop
STL6:42 pmLambert-St Louis
Sep 7
STL2:40 pmLambert-St Louis
11h 40m
1 stop
BCN9:20 amBarcelona-El Prat
$939
Air Canada
Sep 21
MAD12:45 pmMadrid Barajas
33h 53m
2 stops
STL3:38 pmLambert-St Louis
Nov 2
STL6:50 pmLambert-St Louis
30h 10m
2 stops
MAD8:00 amMadrid Barajas
$946

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 August 6, 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 Barcelona-El Prat - STL Lambert-St Louis

BCNSTL

Barcelona-El Prat

Wed 9/23

10:30 am-8:44 pm

1 stop17h 14m

Lambert-St Louis

Thu 10/8

11:31 am-11:45 am

2 stops17h 14m

$849

MadridSt. Louis

MAD Madrid Barajas - STL Lambert-St Louis

MADSTL

Madrid Barajas

Wed 9/23

6:30 pm-11:42 pm

2 stops36h 12m

Lambert-St Louis

Wed 11/4

4:00 pm-12:00 pm

2 stops37h 00m

$851

BarcelonaSt. Louis

BCN Barcelona-El Prat - STL Lambert-St Louis

BCNSTL

Barcelona-El Prat

Thu 9/3

8:00 am-7:45 pm

2 stops18h 45m

Lambert-St Louis

Mon 9/7

7:00 am-10:10 pm

2 stops32h 10m

$857

BarcelonaSt. Louis

BCN Barcelona-El Prat - STL Lambert-St Louis

BCNSTL

Barcelona-El Prat

Mon 9/14

6:40 am-1:25 pm

1 stop13h 45m

Lambert-St Louis

Mon 9/21

3:30 pm-4:05 pm

1 stop17h 35m

$881

BarcelonaSt. Louis

BCN Barcelona-El Prat - STL Lambert-St Louis

BCNSTL

Barcelona-El Prat

Mon 9/14

6:40 am-1:25 pm

1 stop13h 45m

Lambert-St Louis

Mon 9/21

3:30 pm-4:05 pm

1 stop17h 35m

$883

MadridSt. Louis

MAD Madrid Barajas - STL Lambert-St Louis

MADSTL

Madrid Barajas

Sat 1/9

10:05 am-3:26 pm

2 stops36h 21m

Lambert-St Louis

Sat 1/16

8:33 am-8:00 am

2 stops16h 27m

$892

MadridSt. Louis

MAD Madrid Barajas - STL Lambert-St Louis

MADSTL

Madrid Barajas

Sat 1/9

11:15 am-9:42 am

2 stops29h 27m

Lambert-St Louis

Sat 1/16

11:45 am-9:15 am

1 stop14h 30m

$895

BilbaoSt. Louis

BIO Bilbao - STL Lambert-St Louis

BIOSTL

Bilbao

Wed 9/16

6:50 am-1:25 pm

1 stop13h 35m

Lambert-St Louis

Thu 9/24

1:29 pm-5:00 pm

2 stops20h 31m

$895
Quickest round-trip

BarcelonaSt. Louis

BCN Barcelona-El Prat - STL Lambert-St Louis

BCNSTL

Barcelona-El Prat

Wed 9/23

6:40 am-1:25 pm

1 stop13h 45m

Lambert-St Louis

Sat 10/3

12:20 pm-9:00 am

1 stop13h 40m

$901

MadridSt. Louis

MAD Madrid Barajas - STL Lambert-St Louis

MADSTL

Madrid Barajas

Thu 9/10

10:55 am-8:20 pm

2 stops16h 25m

Lambert-St Louis

Tue 9/15

12:10 pm-6:50 am

1 stop11h 40m

$902

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, November 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 $813. The month of October is another great option to travel to St. Louis, with average flight prices from Spain averaging around $870.

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

You could potentially save up to 21% 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 35m

Direct flights

None
The fastest flight from Spain to St. Louis takes 13h 35m
There are no direct flights from Spain to St. Louis. There are no popular flight routes from Spain to St. Louis.
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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
St. Peters
Maryland Heights
Florissant
Collinsville
Alton
O'Fallon
Clayton
Farmington
Fenton
Wentzville
Festus
Eureka
Edwardsville
Litchfield
Grafton
Shrewsbury

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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