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St. Louis

$400+ Cheap flights from Spain to St. Louis (STL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/3. Fares are subject to change and may not be available on all flights or dates of travel.
MAD — STL
Mar 13 — Mar 201
Fri 3/13
Fri 3/20
1 adult, Economy
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Cheap flight deals from Spain to St. Louis

Cheapest flights from Spain to St. Louis
Explore the most affordable flight options available from Spain to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 11, 2026.

This lol.travel deal was found by Cheapflights users on 2/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/2610:40 am
BCN
-
STL
1 stop15h 49m
Finnair
Mon 3/211:22 am
STL
-
BCN
1 stop12h 43m
Finnair
Deal found 2/10$762
This United Airlines deal was found by Cheapflights users on 2/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/266:50 am
BCN
-
STL
2 stops19h 24m
United Airlines
Mon 3/29:55 am
STL
-
BCN
2 stops16h 05m
United Airlines
Deal found 2/10$779
This Rumbo deal was found by Cheapflights users on 2/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Rumbo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/83:55 pm
MAD
-
STL
1 stop15h 17m
Multiple Airlines
Tue 10/139:35 pm
STL
-
MAD
1 stop12h 55m
Multiple Airlines
Deal found 2/10$789
This United Airlines deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/66:00 am
MAD
-
STL
1 stop14h 55m
United Airlines
Tue 3/1011:25 am
STL
-
MAD
2 stops15h 50m
United Airlines
Deal found 2/9$790
This KLM deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/2610:55 am
BCN
-
STL
1 stop29h 11m
KLM
Mon 3/210:13 am
STL
-
BCN
1 stop15h 27m
KLM
Deal found 2/11$791
This KLM deal was found by Cheapflights users on 2/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/241:05 pm
MAD
-
STL
2 stops17h 31m
KLM
Sat 2/285:01 pm
STL
-
MAD
1 stop33h 14m
KLM
Deal found 2/8$805
This Rumbo deal was found by Cheapflights users on 2/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Rumbo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/81:30 pm
BCN
-
STL
1 stop17h 42m
Multiple Airlines
Tue 10/139:35 pm
STL
-
BCN
1 stop14h 05m
Multiple Airlines
Deal found 2/10$809
This Cheapflightsfares deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/91:50 pm
BCN
-
STL
2 stops16h 06m
Lufthansa
Mon 4/136:35 pm
STL
-
BCN
1 stop11h 40m
Lufthansa
Deal found 2/9$812
This Kiwi.com deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/88:00 am
BCN
-
STL
2 stops16h 51m
Lufthansa
Fri 4/176:35 pm
STL
-
BCN
1 stop11h 40m
Lufthansa
Deal found 2/9$821
This KLM deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/1911:10 am
BCN
-
STL
2 stops16h 33m
Multiple Airlines
Mon 2/233:47 pm
STL
-
BCN
2 stops15h 13m
Multiple Airlines
Deal found 2/9$829
This KLM deal was found by Cheapflights users on 2/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/191:05 pm
MAD
-
STL
2 stops17h 31m
Multiple Airlines
Mon 2/233:47 pm
STL
-
MAD
2 stops16h 33m
Multiple Airlines
Deal found 2/8$830
This United Airlines deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/86:40 am
BCN
-
STL
1 stop13h 45m
United Airlines
Fri 4/1710:00 am
STL
-
BCN
1 stop20h 15m
United Airlines
Deal found 2/9$830

Find flight deals from Spain to St. Louis

Keep the following information in mind while searching for Spain to St. Louis flight deals. Data was last updated February 11, 2026.

Round-trip from

$762
(lol.travel)

One-way from

$400
(Kiwi.com)

Popular in

August

Cheapest in

March

Average price

$827
From Spain to Lambert-St Louis
Search Deals
One-way flight from Spain to Lambert-St Louis
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($101 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($25 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights 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, Cheapflights users made 2,558,603 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

Spain

Fly to

St. Louis

Route

Depart

Return

Price

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

11:39 am-9:00 am

1 stop14h 21m

$779

MadridSt. Louis

MAD - STL

MADSTL

Madrid Barajas

Fri 3/6

6:00 am-1:55 pm

1 stop14h 55m

Lambert-St Louis

Tue 3/10

11:28 am-9:15 am

1 stop15h 47m

$790

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

BarcelonaSt. Louis

BCN - STL

BCNSTL

Barcelona-El Prat

Wed 4/8

6:40 am-1:25 pm

1 stop13h 45m

Lambert-St Louis

Fri 4/17

10:00 am-1:15 pm

1 stop20h 15m

$830

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

7:30 am-8:05 am

2 stops17h 35m

$831

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

10:00 am-9:00 am

2 stops16h 00m

$835

BarcelonaSt. Louis

BCN - STL

BCNSTL

Barcelona-El Prat

Thu 4/9

10:30 am-7:33 pm

1 stop16h 03m

Lambert-St Louis

Mon 4/13

4:30 pm-10:55 am

1 stop11h 25m

$845

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/11

Showing 1-10 of 41 results
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Best time to book a flight from Spain to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Spain with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Spain to St. Louis

What is the cheapest month to book a flight from Spain to St. Louis?

Currently, April is the cheapest month in which you can book a flight from Spain to St. Louis (average of $643). Flying from Spain to St. Louis in July is currently the most expensive (average of $927). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from Spain to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to St. Louis from Spain?

    Located just 12.7 mi from the city center, Lambert-St Louis (STL) is the airport most travelers will use when flying to St. Louis from Spain.

  • How long is the flight from Spain to St. Louis?

    There are many flights that can get you from Spain to St. Louis in 15h 49m. Fly via Finnair, United Airlines, or KLM to get the fastest option. Spain and St. Louis are separated by a distance of 4638 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Spain to St. Louis one-way?

    The cheapest airlines for a one-way flight from Spain to St. Louis are American Airlines ($458), British Airways ($536), and Aer Lingus ($541).

  • What are the most popular routes from Spain to St. Louis?

    While some choose either Madrid Barajas - Lambert-St Louis or Bilbao - Lambert-St Louis, Barcelona-El Prat - Lambert-St Louis is the most popular route from Spain to St. Louis.

  • Can I find deals for flights from Spain to St. Louis that include hotel bookings?

    Yes. In addition to deals on Spain to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Spain to St. Louis?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Spain to St. Louis.

  • Can I find deals for business class flights from Spain to St. Louis?

    Yes. Cheapflights offers flight deals from Spain to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Spain to St. Louis?

    Currently, April is the cheapest month in which you can book a flight from Spain to St. Louis (average of $643). Flying from Spain to St. Louis in July is currently the most expensive (average of $927). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Edwardsville
O'Fallon
Swansea
Fairview Heights
Maryland Heights
Collinsville
Eureka
Glencoe
Chesterfield
Alton
Farmington
Festus

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