Latest deals
Insights
FAQs
Price Alerts

Cheap flights from Spain to St. Louis from $400

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 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.
1 adult
0 bags

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

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.
Finnair Logo
10:40 am - 7:29 pm
BCN
-
STL
15h 49m
1 stop
Finnair Logo
11:22 am - 7:05 am
STL
-
BCN
12h 43m
1 stop
$762Finnair
Thu, Feb 26 - Mon, Mar 2
United Airlines Logo
6:50 am - 7:14 pm
BCN
-
STL
19h 24m
2 stops
United Airlines Logo
9:55 am - 9:00 am
STL
-
BCN
16h 05m
2 stops
$779United Airlines
Thu, Feb 26 - Mon, Mar 2
United Airlines Logo
6:50 am - 5:44 pm
BCN
-
STL
17h 54m
2 stops
United Airlines Logo
7:00 am - 9:00 am
STL
-
BCN
19h 00m
1 stop
$780United Airlines
Thu, Feb 26 - Mon, Mar 2
KLM Logo
10:55 am - 9:06 am
BCN
-
STL
29h 11m
1 stop
KLM Logo
10:13 am - 8:40 am
STL
-
BCN
15h 27m
1 stop
$791KLM
Thu, Feb 26 - Mon, Mar 2
KLM Logo
1:05 pm - 11:36 pm
MAD
-
STL
17h 31m
2 stops
KLM Logo
5:01 pm - 9:15 am
STL
-
MAD
33h 14m
1 stop
$805KLM
Tue, Feb 24 - Sat, Feb 28
Lufthansa Logo
1:50 pm - 10:56 pm
BCN
-
STL
16h 06m
2 stops
Lufthansa Logo
6:35 pm - 1:15 pm
STL
-
BCN
11h 40m
1 stop
$812Lufthansa
Thu, Apr 9 - Mon, Apr 13
Lufthansa Logo
8:00 am - 5:51 pm
BCN
-
STL
16h 51m
2 stops
Lufthansa Logo
6:35 pm - 1:15 pm
STL
-
BCN
11h 40m
1 stop
$821Lufthansa
Wed, Apr 8 - Fri, Apr 17
Multiple Airlines Logo
5:55 am - 1:25 pm
MAD
-
STL
14h 30m
1 stop
Multiple Airlines Logo
12:10 pm - 6:50 am
STL
-
MAD
11h 40m
1 stop
$832Multiple Airlines
Mon, Jun 15 - Fri, Jul 31
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
Multiple Airlines Logo
9:25 am - 2:55 pm
OVD
-
STL
35h 30m
3 stops
Multiple Airlines Logo
4:05 pm - 11:15 pm
STL
-
OVD
25h 10m
3 stops
$1,809Multiple Airlines
Thu, Mar 12 - Thu, Mar 19

Lufthansa flights from Spain to St. Louis

Our best Lufthansa deals on Spain to St. Louis flight tickets
Lufthansa
Apr 9
BCN1:50 pmBarcelona-El Prat
16h 06m
2 stops
STL10:56 pmLambert-St Louis
Apr 13
STL6:35 pmLambert-St Louis
11h 40m
1 stop
BCN1:15 pmBarcelona-El Prat
$812
Lufthansa
Apr 8
BCN8:00 amBarcelona-El Prat
16h 51m
2 stops
STL5:51 pmLambert-St Louis
Apr 17
STL6:35 pmLambert-St Louis
11h 40m
1 stop
BCN1:15 pmBarcelona-El Prat
$821
Lufthansa
Mar 25
MAD5:55 amMadrid Barajas
18h 05m
2 stops
STL6:00 pmLambert-St Louis
Apr 1
STL3:30 pmLambert-St Louis
13h 40m
1 stop
MAD12:10 pmMadrid Barajas
$842

British Airways flights from Spain to St. Louis

Our best British Airways deals on Spain to St. Louis flight tickets
British Airways
Apr 9
BCN10:30 amBarcelona-El Prat
16h 03m
1 stop
STL7:33 pmLambert-St Louis
Apr 13
STL4:30 pmLambert-St Louis
11h 25m
1 stop
BCN10:55 amBarcelona-El Prat
$845
British Airways
Apr 21
MAD1:35 pmMadrid Barajas
15h 42m
1 stop
STL10:17 pmLambert-St Louis
May 12
STL8:03 pmLambert-St Louis
10h 27m
1 stop
MAD1:30 pmMadrid Barajas
$850
British Airways
Mar 26
MAD1:45 pmMadrid Barajas
15h 05m
1 stop
STL10:50 pmLambert-St Louis
Apr 9
STL12:27 pmLambert-St Louis
13h 38m
1 stop
MAD9:05 amMadrid Barajas
$1,082

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 February 11, 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

BarcelonaSt. Louis

BCN - STL

BCNSTL

Barcelona-El Prat

Thu 2/26

10:40 am-7:29 pm

1 stop15h 49m

Lambert-St Louis

Mon 3/2

11:22 am-7:05 am

1 stop12h 43m

$762

BarcelonaSt. Louis

BCN - STL

BCNSTL

Barcelona-El Prat

Thu 2/26

6:50 am-7:14 pm

2 stops19h 24m

Lambert-St Louis

Mon 3/2

9:55 am-9:00 am

2 stops16h 05m

$779

BarcelonaSt. Louis

BCN - STL

BCNSTL

Barcelona-El Prat

Thu 2/26

6:50 am-5:44 pm

2 stops17h 54m

Lambert-St Louis

Mon 3/2

7:00 am-9:00 am

1 stop19h 00m

$780

BarcelonaSt. Louis

BCN - STL

BCNSTL

Barcelona-El Prat

Thu 2/26

10:55 am-9:06 am

1 stop29h 11m

Lambert-St Louis

Mon 3/2

10:13 am-8:40 am

1 stop15h 27m

$791

MadridSt. Louis

MAD - STL

MADSTL

Madrid Barajas

Tue 2/24

1:05 pm-11:36 pm

2 stops17h 31m

Lambert-St Louis

Sat 2/28

5:01 pm-9:15 am

1 stop33h 14m

$805

BarcelonaSt. Louis

BCN - STL

BCNSTL

Barcelona-El Prat

Thu 4/9

1:50 pm-10:56 pm

2 stops16h 06m

Lambert-St Louis

Mon 4/13

6:35 pm-1:15 pm

1 stop11h 40m

$812

BarcelonaSt. Louis

BCN - STL

BCNSTL

Barcelona-El Prat

Wed 4/8

8:00 am-5:51 pm

2 stops16h 51m

Lambert-St Louis

Fri 4/17

6:35 pm-1:15 pm

1 stop11h 40m

$821

MadridSt. Louis

MAD - STL

MADSTL

Madrid Barajas

Mon 6/15

5:55 am-1:25 pm

1 stop14h 30m

Lambert-St Louis

Fri 7/31

12:10 pm-6:50 am

1 stop11h 40m

$832

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

OviedoSt. Louis

OVD - STL

OVDSTL

Oviedo Asturias

Thu 3/12

9:25 am-2:55 pm

3 stops35h 30m

Lambert-St Louis

Thu 3/19

4:05 pm-11:15 pm

3 stops25h 10m

$1,809

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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

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

You could potentially save up to 15% 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

14h 36m

Direct flights

None
The fastest flight from Spain to St. Louis takes 14h 36m
There are no direct flights from Spain to St. Louis. There are no popular flight routes from Spain to St. Louis.
Search flight deals

  • 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
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 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.

An easier way to manage your St. Louis trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Fri 3/13
Fri 3/20
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States