What is the cheapest airline that flies from Lambert-St Louis to Spain?

United Airlines, American Airlines, and British Airways are the most popular carriers operating from Lambert-St Louis to Spain

What airlines fly to Spain?

United Airlines, British Airways and American Airlines are the top three most popular airlines that fly to Spain from St. Louis according to our data. United Airlines is the first choice among our users, with 32% of people opting to fly with this airline when traveling to Spain. Keep in mind that there are 7 different airlines that fly to Spain on a routine basis, so you have a few additional options to choose from.

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

Prices for flights from Lambert-St Louis Airport to Spain were last updated today.

How many operators does momondo search for flights from Lambert-St Louis Airport to Spain?

As of November 2026, there are 7 operators available to choose from for flights from Lambert-St Louis Airport to Spain.

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

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Spain.

What documentation or ID do you need to fly to Spain?

The travel and health documents required for your trip to Spain can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Spain. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$336 Cheap Flights from St. Louis to Spain in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from St. Louis to Spain

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

2:23 pm - 6:10 amSTL Lambert-St Louis-MAD Madrid Barajas

32h 47m1 stop Dallas/Fort Worth

12:55 am - 9:27 amMAD Madrid Barajas-STL Lambert-St Louis

15h 32m1 stop Dallas/Fort Worth

$641Iberia

Sat, Mar 6 - Fri, Mar 12

4:40 pm - 11:40 amSTL Lambert-St Louis-BIO Bilbao

13h 00m1 stop Frankfurt am Main

6:50 am - 1:25 pmBIO Bilbao-STL Lambert-St Louis

13h 35m1 stop Frankfurt am Main

$706Lufthansa

Wed, Mar 17 - Fri, Apr 2

3:40 pm - 12:00 pmSTL Lambert-St Louis-VLC Valencia

13h 20m1 stop Frankfurt am Main

12:40 pm - 3:26 pmVLC Valencia-STL Lambert-St Louis

57h 46m2 stops Zurich Toronto Pearson Intl

$711Multiple Airlines

Wed, Feb 17 - Mon, Feb 22

2:21 pm - 5:15 pmSTL Lambert-St Louis-VLC Valencia

19h 54m2 stops Chicago O'Hare Intl Madrid Barajas

5:55 pm - 9:27 amVLC Valencia-STL Lambert-St Louis

22h 32m2 stops Madrid Barajas Dallas/Fort Worth

$716Iberia

Wed, Feb 17 - Mon, Feb 22

1:00 pm - 5:45 pmSTL Lambert-St Louis-BIO Bilbao

22h 45m2 stops Washington, D.C. Dulles Intl Munich Franz Josef Strauss

6:50 am - 1:25 pmBIO Bilbao-STL Lambert-St Louis

13h 35m1 stop Frankfurt am Main

$718United Airlines

Wed, Mar 17 - Fri, Apr 2

6:15 am - 8:00 amSTL Lambert-St Louis-MAD Madrid Barajas

18h 45m2 stops Chicago O'Hare Intl Montreal Pierre Elliott Trudeau Intl

6:05 am - 1:45 pmMAD Madrid Barajas-STL Lambert-St Louis

14h 40m1 stop Frankfurt am Main

$720Multiple Airlines

Wed, Feb 24 - Wed, Mar 3

3:40 pm - 12:00 pmSTL Lambert-St Louis-VLC Valencia

13h 20m1 stop Frankfurt am Main

6:05 am - 1:45 pmVLC Valencia-STL Lambert-St Louis

14h 40m1 stop Frankfurt am Main

$725United Airlines

Wed, Feb 3 - Fri, Feb 5

6:45 am - 11:30 amSTL Lambert-St Louis-BIO Bilbao

22h 45m2 stops Detroit Metropolitan Wayne County Paris Charles de Gaulle

12:00 pm - 11:39 pmBIO Bilbao-STL Lambert-St Louis

18h 39m2 stops Amsterdam Schiphol Atlanta Hartsfield-Jackson

$726Delta

Sun, Mar 21 - Fri, Apr 2

3:40 pm - 12:35 pmSTL Lambert-St Louis-MAD Madrid Barajas

13h 55m1 stop Frankfurt am Main

6:05 am - 1:45 pmMAD Madrid Barajas-STL Lambert-St Louis

14h 40m1 stop Frankfurt am Main

$732Lufthansa

Wed, Mar 3 - Wed, Mar 10

10:45 am - 12:00 pmSTL Lambert-St Louis-AGP Malaga

18h 15m2 stops Detroit Metropolitan Wayne County Paris Charles de Gaulle

4:10 pm - 8:54 pmAGP Malaga-STL Lambert-St Louis

35h 44m2 stops Amsterdam Schiphol New York John F Kennedy Intl

$808Delta

Wed, Dec 30 - Mon, Jan 18

Cheap last minute flights

Enter your travel dates to find the best prices.

6:50 pm - 9:35 amSTL Lambert-St Louis-BCN Barcelona-El Prat

31h 45m2 stops Chicago O'Hare Intl Montreal Pierre Elliott Trudeau Intl

5:55 am - 3:23 pmBCN Barcelona-El Prat-STL Lambert-St Louis

40h 28m2 stops Frankfurt am Main Toronto Pearson Intl

$818Air Canada

Sat, Nov 7 - Tue, Nov 17

6:50 pm - 9:35 amSTL Lambert-St Louis-BCN Barcelona-El Prat

31h 45m2 stops Chicago O'Hare Intl Montreal Pierre Elliott Trudeau Intl

3:10 pm - 9:40 pmBCN Barcelona-El Prat-STL Lambert-St Louis

13h 30m1 stop Chicago O'Hare Intl

$818United Airlines

Sat, Nov 7 - Tue, Nov 17

6:50 pm - 9:00 amSTL Lambert-St Louis-BCN Barcelona-El Prat

31h 10m2 stops Chicago O'Hare Intl Washington, D.C. Dulles Intl

3:10 pm - 9:40 pmBCN Barcelona-El Prat-STL Lambert-St Louis

13h 30m1 stop Chicago O'Hare Intl

$819United Airlines

Sat, Nov 7 - Tue, Nov 17

2:54 pm - 7:55 amSTL Lambert-St Louis-BCN Barcelona-El Prat

34h 01m1 stop Dallas/Fort Worth

12:00 pm - 8:26 pmBCN Barcelona-El Prat-STL Lambert-St Louis

15h 26m1 stop Philadelphia

$826British Airways

Sat, Nov 7 - Tue, Nov 17

2:54 pm - 7:55 amSTL Lambert-St Louis-BCN Barcelona-El Prat

34h 01m1 stop Dallas/Fort Worth

8:55 am - 5:55 pmBCN Barcelona-El Prat-STL Lambert-St Louis

16h 00m1 stop Dallas/Fort Worth

$826British Airways

Sat, Nov 7 - Tue, Nov 17

4:05 pm - 9:35 amSTL Lambert-St Louis-BCN Barcelona-El Prat

34h 30m2 stops Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl

9:55 am - 9:40 pmBCN Barcelona-El Prat-STL Lambert-St Louis

18h 45m3 stops Frankfurt am Main Toronto Pearson Intl Chicago O'Hare Intl

$935Air Canada

Sat, Nov 7 - Tue, Nov 17

4:05 pm - 9:35 amSTL Lambert-St Louis-BCN Barcelona-El Prat

34h 30m2 stops Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl

9:55 am - 9:40 pmBCN Barcelona-El Prat-STL Lambert-St Louis

18h 45m3 stops Frankfurt am Main Toronto Pearson Intl Chicago O'Hare Intl

$936Air Canada

Sat, Nov 7 - Tue, Nov 17

9:40 am - 1:15 pmSTL Lambert-St Louis-BCN Barcelona-El Prat

20h 35m1 stop Chicago O'Hare Intl

1:35 pm - 6:09 pmBCN Barcelona-El Prat-STL Lambert-St Louis

35h 34m2 stops Montreal Pierre Elliott Trudeau Intl Chicago O'Hare Intl

$1,235Multiple Airlines

Sun, Nov 8 - Thu, Nov 12

6:00 am - 9:00 amSTL Lambert-St Louis-BCN Barcelona-El Prat

20h 00m2 stops Chicago O'Hare Intl Washington, D.C. Dulles Intl

1:35 pm - 6:09 pmBCN Barcelona-El Prat-STL Lambert-St Louis

35h 34m2 stops Montreal Pierre Elliott Trudeau Intl Chicago O'Hare Intl

$1,239Multiple Airlines

Sun, Nov 8 - Thu, Nov 12

6:00 am - 7:55 amSTL Lambert-St Louis-BCN Barcelona-El Prat

18h 55m1 stop Dallas/Fort Worth

10:50 am - 11:33 pmBCN Barcelona-El Prat-STL Lambert-St Louis

19h 43m1 stop Dallas/Fort Worth

$1,255American Airlines

Sun, Nov 8 - Thu, Nov 12

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American Airlines flights from St. Louis to Spain

Our best American Airlines deals on St. Louis to Spain flight tickets

American Airlines

Mar 1

STL6:30 amLambert-St Louis

19h 40m

1 stop

BCN9:10 amBarcelona-El Prat

Mar 31

BCN12:50 pmBarcelona-El Prat

14h 41m

1 stop

STL8:31 pmLambert-St Louis

$779

American Airlines

Feb 21

STL12:08 pmLambert-St Louis

14h 17m

1 stop

MAD9:25 amMadrid Barajas

Feb 26

MAD12:55 amMadrid Barajas

17h 23m

1 stop

STL11:18 amLambert-St Louis

$800

American Airlines

Nov 28

STL1:25 pmLambert-St Louis

17h 25m

2 stops

PMI1:50 pmPalma de Mallorca Son Sant Joan

Dec 8

PMI9:05 amPalma de Mallorca Son Sant Joan

20h 12m

2 stops

STL10:17 pmLambert-St Louis

$865

Air Canada flights from St. Louis to Spain

Our best Air Canada deals on St. Louis to Spain flight tickets

Air Canada

Mar 1

STL5:00 amLambert-St Louis

20h 00m

2 stops

MAD8:00 amMadrid Barajas

Mar 4

MAD1:25 pmMadrid Barajas

31h 52m

2 stops

STL2:17 pmLambert-St Louis

$733

Air Canada

Apr 12

STL6:40 amLambert-St Louis

18h 20m

2 stops

BCN8:00 amBarcelona-El Prat

Apr 23

BCN1:15 pmBarcelona-El Prat

30h 05m

2 stops

STL12:20 pmLambert-St Louis

$776

Air Canada

Feb 21

STL7:10 pmLambert-St Louis

29h 50m

2 stops

MAD8:00 amMadrid Barajas

Feb 27

MAD1:25 pmMadrid Barajas

38h 58m

2 stops

STL9:23 pmLambert-St Louis

$783

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisMadrid

STL Lambert-St Louis - MAD Madrid Barajas

STLMAD

Lambert-St Louis

Sat 3/6

2:23 pm-6:10 am

1 stop32h 47m

Madrid Barajas

Fri 3/12

12:55 am-9:27 am

1 stop15h 32m

$641

Quickest round-trip

St. LouisBilbao

STL Lambert-St Louis - BIO Bilbao

STLBIO

Lambert-St Louis

Wed 3/17

4:40 pm-11:40 am

1 stop13h 00m

Bilbao

Fri 4/2

6:50 am-1:25 pm

1 stop13h 35m

$706

St. LouisValencia

STL Lambert-St Louis - VLC Valencia

STLVLC

Lambert-St Louis

Wed 2/17

3:40 pm-12:00 pm

1 stop13h 20m

Valencia

Mon 2/22

12:40 pm-3:26 pm

2 stops57h 46m

$711

St. LouisValencia

STL Lambert-St Louis - VLC Valencia

STLVLC

Lambert-St Louis

Wed 2/17

2:21 pm-5:15 pm

2 stops19h 54m

Valencia

Mon 2/22

5:55 pm-9:27 am

2 stops22h 32m

$716

St. LouisBilbao

STL Lambert-St Louis - BIO Bilbao

STLBIO

Lambert-St Louis

Wed 3/17

1:00 pm-5:45 pm

2 stops22h 45m

Bilbao

Fri 4/2

6:50 am-1:25 pm

1 stop13h 35m

$718

St. LouisMadrid

STL Lambert-St Louis - MAD Madrid Barajas

STLMAD

Lambert-St Louis

Wed 2/24

6:15 am-8:00 am

2 stops18h 45m

Madrid Barajas

Wed 3/3

6:05 am-1:45 pm

1 stop14h 40m

$720

St. LouisValencia

STL Lambert-St Louis - VLC Valencia

STLVLC

Lambert-St Louis

Wed 2/3

3:40 pm-12:00 pm

1 stop13h 20m

Valencia

Fri 2/5

6:05 am-1:45 pm

1 stop14h 40m

$725

St. LouisBilbao

STL Lambert-St Louis - BIO Bilbao

STLBIO

Lambert-St Louis

Sun 3/21

6:45 am-11:30 am

2 stops22h 45m

Bilbao

Fri 4/2

12:00 pm-11:39 pm

2 stops18h 39m

$726

St. LouisMadrid

STL Lambert-St Louis - MAD Madrid Barajas

STLMAD

Lambert-St Louis

Wed 3/3

3:40 pm-12:35 pm

1 stop13h 55m

Madrid Barajas

Wed 3/10

6:05 am-1:45 pm

1 stop14h 40m

$732

St. LouisMálaga

STL Lambert-St Louis - AGP Malaga

STLAGP

Lambert-St Louis

Wed 12/30

10:45 am-12:00 pm

2 stops18h 15m

Malaga

Mon 1/18

4:10 pm-8:54 pm

2 stops35h 44m

$808

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from St. Louis to Spain

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

Prices

Airlines

What is the cheapest month to fly to Spain?

If you don’t want to visit Spain in April, then you should wait until February to fly from St. Louis, when ticket prices are also cheap, with an average price of $725.

How far in advance should I book a flight from St. Louis to Spain?

You are more likely to see cheaper flights to Spain from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Spain for around $971 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Spain from St. Louis for as low as $852 on momondo.

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

You could potentially save up to 24% on your flight if you consider stops on a St. Louis to Spain flight.

Cheap St. Louis to Spain flight deals and tips

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

Best Price Found	$336
Fastest flight time	12h 35m
Direct flights	None

The best one-way flight to Spain from St. Louis in the past 72 hours is $336. The best round-trip flight deal from St. Louis to Spain found on momondo in the last 72 hours is $641.

The fastest flight from St. Louis to Spain takes 12h 35m

There are no direct flights from St. Louis to Spain. There are no popular flight routes from St. Louis to Spain.

Search flight deals

Frequently asked questions about flying from St. Louis to Spain

When did momondo last update prices for flights from Lambert-St Louis Airport to Spain?
Prices for flights from Lambert-St Louis Airport to Spain were last updated today.
How many operators does momondo search for flights from Lambert-St Louis Airport to Spain?
As of November 2026, there are 7 operators available to choose from for flights from Lambert-St Louis Airport to Spain.
How old do you have to be to fly from Lambert-St Louis Airport to Spain?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Spain.
What documentation or ID do you need to fly to Spain?
The travel and health documents required for your trip to Spain can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Spain. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from St. Louis to Spain

Compare and see reviews for airlines that fly from St. Louis to Spain with momondo

Airline	Rating	Free Cancellation	Price
Lufthansa	PriceFrom $480	Free Cancellation	Rating 6.8 8,297 reviews	Search Lufthansa flights
Delta	PriceFrom $489	Free Cancellation	Rating 7.8 8,696 reviews	Search Delta flights
American Airlines	PriceFrom $505	Free Cancellation	Rating 7.0 12,230 reviews	Search American Airlines flights
British Airways	PriceFrom $516	Free Cancellation	Rating 6.7 8,280 reviews	Search British Airways flights
Iberia	PriceFrom $523	Free Cancellation	Rating 7.0 3,240 reviews	Search Iberia flights
United Airlines	PriceFrom $560	Free Cancellation	Rating 7.3 10,458 reviews	Search United Airlines flights
Air Canada	PriceFrom $648	Free Cancellation	Rating 7.1 11,853 reviews	Search Air Canada flights

Why use momondo?

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

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

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

Yes. momondo enables you to select and highlight flights to Spain from St. Louis with this policy.

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

Once you have performed a search for St. Louis to Spain flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Yes momondo offers price alerts on flights to Spain from St. Louis. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.