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St. Louis

$442+ 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 5/10. Fares are subject to change and may not be available on all flights or dates of travel.
MAD — STL
Apr 29 — May 61
Wed 4/29
Wed 5/6
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 March 30, 2026.

This KLM deal was found by Cheapflights users on 3/29. 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.
Fri 5/156:45 am
BIO
-
STL
2 stops16h 25m
Multiple Airlines
Tue 5/2610:49 am
STL
-
BIO
2 stops16h 01m
Multiple Airlines
Deal found 3/29$892
This lol.travel deal was found by Cheapflights users on 3/26. 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 4/91:35 pm
MAD
-
STL
1 stop15h 42m
Finnair
Mon 4/135:21 pm
STL
-
MAD
1 stop13h 09m
Finnair
Deal found 3/26$896
This United Airlines deal was found by Cheapflights users on 3/25. 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 9/26:40 am
BCN
-
STL
1 stop13h 45m
United Airlines
Sun 9/61:18 pm
STL
-
BCN
1 stop16h 57m
United Airlines
Deal found 3/25$896
This United Airlines deal was found by Cheapflights users on 3/25. 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 4/106:00 am
MAD
-
STL
1 stop14h 25m
United Airlines
Tue 4/1410:00 am
STL
-
MAD
2 stops15h 05m
United Airlines
Deal found 3/25$897
This KLM deal was found by Cheapflights users on 3/26. 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.
Sat 4/116:45 am
BIO
-
STL
2 stops17h 23m
Multiple Airlines
Wed 4/1511:42 am
STL
-
BIO
2 stops15h 08m
Multiple Airlines
Deal found 3/26$898
This lol.travel deal was found by Cheapflights users on 3/28. 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 4/1611:45 am
MAD
-
STL
1 stop17h 32m
Finnair
Mon 4/205:21 pm
STL
-
MAD
1 stop13h 09m
Finnair
Deal found 3/28$898
This Kiwi.com deal was found by Cheapflights users on 3/26. 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.
Fri 5/16:40 am
BCN
-
STL
1 stop13h 45m
Lufthansa
Tue 5/512:15 pm
STL
-
BCN
1 stop13h 05m
Lufthansa
Deal found 3/26$901
This United Airlines deal was found by Cheapflights users on 3/25. 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 11/186:00 am
MAD
-
STL
1 stop14h 55m
United Airlines
Sun 11/223:50 pm
STL
-
MAD
1 stop14h 10m
United Airlines
Deal found 3/25$902
This Delta deal was found by Cheapflights users on 3/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/116:00 am
AGP
-
STL
2 stops21h 42m
Delta
Wed 4/156:19 am
STL
-
AGP
2 stops22h 26m
Delta
Deal found 3/27$902
This KLM deal was found by Cheapflights users on 3/28. 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 4/166:20 am
BCN
-
STL
2 stops17h 30m
Multiple Airlines
Mon 4/201:02 pm
STL
-
BCN
2 stops15h 13m
Multiple Airlines
Deal found 3/28$902
This Delta deal was found by Cheapflights users on 3/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/2110:25 am
MAD
-
STL
2 stops20h 11m
Delta
Sun 4/265:59 pm
STL
-
MAD
2 stops15h 46m
Delta
Deal found 3/30$903
This KLM deal was found by Cheapflights users on 3/28. 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.
Fri 4/246:20 am
BCN
-
STL
2 stops17h 30m
Multiple Airlines
Mon 4/2711:42 am
STL
-
BCN
2 stops14h 18m
Multiple Airlines
Deal found 3/28$903

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 March 30, 2026.

Round-trip from

$892
(Delta)

One-way from

$442
(Kiwi.com)

Popular in

August

Cheapest in

November

Average price

$1,000
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. 5% potential increase in price ($50 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($21 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 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 March 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 9/2

6:40 am-1:25 pm

1 stop13h 45m

Lambert-St Louis

Sun 9/6

1:18 pm-1:15 pm

1 stop16h 57m

$896
Quickest round-trip

MadridSt. Louis

MAD - STL

MADSTL

Madrid Barajas

Fri 4/10

6:00 am-1:25 pm

1 stop14h 25m

Lambert-St Louis

Tue 4/14

10:00 am-8:05 am

2 stops15h 05m

$897

MálagaSt. Louis

AGP - STL

AGPSTL

Malaga

Sat 4/11

6:00 am-8:42 pm

2 stops21h 42m

Lambert-St Louis

Wed 4/15

6:19 am-11:45 am

2 stops22h 26m

$902

BarcelonaSt. Louis

BCN - STL

BCNSTL

Barcelona-El Prat

Thu 4/16

6:20 am-4:50 pm

2 stops17h 30m

Lambert-St Louis

Mon 4/20

1:02 pm-11:15 am

2 stops15h 13m

$902

MadridSt. Louis

MAD - STL

MADSTL

Madrid Barajas

Tue 4/21

10:25 am-8:44 pm

2 stops17h 19m

Lambert-St Louis

Sun 4/26

5:59 pm-4:45 pm

2 stops15h 46m

$903

MadridSt. Louis

MAD - STL

MADSTL

Madrid Barajas

Thu 4/16

6:00 am-3:32 pm

2 stops16h 32m

Lambert-St Louis

Mon 4/20

1:02 pm-11:20 am

2 stops15h 18m

$904

MadridSt. Louis

MAD - STL

MADSTL

Madrid Barajas

Thu 9/10

1:05 pm-11:37 pm

2 stops17h 32m

Lambert-St Louis

Sun 9/20

4:13 pm-3:35 pm

2 stops16h 22m

$904

MadridSt. Louis

MAD - STL

MADSTL

Madrid Barajas

Thu 4/16

7:05 am-4:42 pm

2 stops16h 37m

Lambert-St Louis

Mon 4/20

1:02 pm-12:15 pm

1 stop16h 13m

$907

BarcelonaSt. Louis

BCN - STL

BCNSTL

Barcelona-El Prat

Fri 4/10

11:10 am-8:42 pm

2 stops16h 32m

Lambert-St Louis

Tue 4/14

11:42 am-9:00 am

2 stops14h 18m

$907

BarcelonaSt. Louis

BCN - STL

BCNSTL

Barcelona-El Prat

Thu 4/9

9:20 am-9:06 pm

2 stops18h 46m

Lambert-St Louis

Mon 4/13

5:59 pm-3:35 pm

2 stops14h 36m

$907

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/26

Showing 1-10 of 45 resultsSorted by cheapest first
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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 $678). Flying from Spain to St. Louis in July is currently the most expensive (average of $970). 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 13h 45m. Fly via United Airlines, Delta, or Virgin Atlantic 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 Delta ($857).

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

    While some choose either Barcelona-El Prat - Lambert-St Louis or Bilbao - Lambert-St Louis, Madrid Barajas - 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 $678). Flying from Spain to St. Louis in July is currently the most expensive (average of $970). 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
Fenton
Swansea
Fairview Heights
Maryland Heights
Collinsville
Eureka
Wentzville
Glencoe
Chesterfield
Alton
Farmington
Festus

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