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

Air Canada, United Airlines, and Lufthansa 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 33% 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 August 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.

$276 Cheap Flights from St. Louis to Spain in 2026

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.

12:10 pm - 6:50 amSTL Lambert-St Louis-MAD Madrid Barajas

11h 40m1 stop Montreal Pierre Elliott Trudeau Intl

1:30 pm - 2:00 pmMAD Madrid Barajas-STL Lambert-St Louis

31h 30m1 stop Toronto Pearson Intl

$684Air Canada

Sun, Sep 27 - Tue, Oct 13

2:40 pm - 8:50 amSTL Lambert-St Louis-MAD Madrid Barajas

11h 10m1 stop Toronto Pearson Intl

1:30 pm - 8:00 pmMAD Madrid Barajas-STL Lambert-St Louis

13h 30m1 stop Toronto Pearson Intl

$689Multiple Airlines

Tue, Sep 29 - Fri, Oct 9

12:10 pm - 6:50 amSTL Lambert-St Louis-MAD Madrid Barajas

11h 40m1 stop Montreal Pierre Elliott Trudeau Intl

12:45 pm - 12:13 pmMAD Madrid Barajas-STL Lambert-St Louis

30h 28m2 stops Montreal Pierre Elliott Trudeau Intl Chicago O'Hare Intl

$709United Airlines

Sun, Oct 4 - Wed, Oct 14

11:32 am - 9:35 amSTL Lambert-St Louis-MAD Madrid Barajas

15h 03m1 stop Chicago O'Hare Intl

12:00 pm - 6:17 pmMAD Madrid Barajas-STL Lambert-St Louis

13h 17m1 stop Chicago O'Hare Intl

$709Iberia

Sun, Nov 8 - Wed, Nov 18

6:00 am - 9:15 amSTL Lambert-St Louis-MAD Madrid Barajas

20h 15m1 stop Newark

1:25 pm - 2:30 pmMAD Madrid Barajas-STL Lambert-St Louis

32h 05m2 stops Montreal Pierre Elliott Trudeau Intl Chicago O'Hare Intl

$711United Airlines

Sun, Nov 8 - Wed, Nov 18

1:29 pm - 5:40 pmSTL Lambert-St Louis-MAD Madrid Barajas

21h 11m2 stops Chicago O'Hare Intl Munich Franz Josef Strauss

6:00 am - 1:25 pmMAD Madrid Barajas-STL Lambert-St Louis

14h 25m1 stop Frankfurt am Main

$720Lufthansa

Mon, Sep 28 - Fri, Oct 9

10:21 am - 7:45 amSTL Lambert-St Louis-MAD Madrid Barajas

14h 24m1 stop Dallas/Fort Worth

7:25 pm - 7:25 pmMAD Madrid Barajas-STL Lambert-St Louis

31h 00m2 stops London Heathrow Chicago O'Hare Intl

$721Iberia

Mon, Nov 16 - Mon, Nov 23

12:10 pm - 8:00 amSTL Lambert-St Louis-BCN Barcelona-El Prat

12h 50m1 stop Montreal Pierre Elliott Trudeau Intl

1:15 pm - 2:00 pmBCN Barcelona-El Prat-STL Lambert-St Louis

31h 45m1 stop Toronto Pearson Intl

$725Air Canada

Sun, Sep 20 - Tue, Oct 6

1:08 pm - 5:30 pmSTL Lambert-St Louis-VLC Valencia

21h 22m2 stops Chicago O'Hare Intl Munich Franz Josef Strauss

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

14h 40m1 stop Frankfurt am Main

$730Lufthansa

Tue, Nov 17 - Fri, Nov 27

6:50 pm - 5:30 pmSTL Lambert-St Louis-VLC Valencia

15h 40m2 stops Chicago O'Hare Intl Munich Franz Josef Strauss

6:05 am - 3:26 pmVLC Valencia-STL Lambert-St Louis

40h 21m2 stops Frankfurt am Main Toronto Pearson Intl

$738Multiple Airlines

Tue, Nov 17 - Thu, Nov 26

Cheap last minute flights

Enter your travel dates to find the best prices.

3:30 pm - 5:35 pmSTL Lambert-St Louis-VLC Valencia

19h 05m1 stop Frankfurt am Main

6:25 pm - 1:25 pmVLC Valencia-STL Lambert-St Louis

26h 00m1 stop Frankfurt am Main

$949Lufthansa

Mon, Aug 24 - Mon, Sep 14

12:59 pm - 11:55 amSTL Lambert-St Louis-VLC Valencia

15h 56m2 stops Chicago O'Hare Intl Frankfurt am Main

6:25 pm - 1:25 pmVLC Valencia-STL Lambert-St Louis

26h 00m1 stop Frankfurt am Main

$950Lufthansa

Mon, Aug 24 - Mon, Sep 14

12:10 pm - 6:50 amSTL Lambert-St Louis-MAD Madrid Barajas

11h 40m1 stop Montreal Pierre Elliott Trudeau Intl

5:55 am - 1:25 pmMAD Madrid Barajas-STL Lambert-St Louis

14h 30m1 stop Frankfurt am Main

$956Multiple Airlines

Mon, Aug 24 - Mon, Sep 14

12:59 pm - 11:55 amSTL Lambert-St Louis-VLC Valencia

15h 56m2 stops Chicago O'Hare Intl Frankfurt am Main

6:25 pm - 10:00 pmVLC Valencia-STL Lambert-St Louis

34h 35m2 stops Frankfurt am Main Chicago O'Hare Intl

$957Lufthansa

Mon, Aug 24 - Mon, Sep 14

12:10 pm - 6:50 amSTL Lambert-St Louis-MAD Madrid Barajas

11h 40m1 stop Montreal Pierre Elliott Trudeau Intl

8:55 pm - 6:41 pmMAD Madrid Barajas-STL Lambert-St Louis

28h 46m2 stops Brussels Bruxelles-National Montreal Pierre Elliott Trudeau Intl

$974Multiple Airlines

Mon, Aug 24 - Mon, Sep 14

7:00 am - 11:55 amSTL Lambert-St Louis-VLC Valencia

21h 55m3 stops Newark Boston Logan Intl Frankfurt am Main

11:50 am - 4:34 pmVLC Valencia-STL Lambert-St Louis

59h 44m2 stops Munich Franz Josef Strauss Denver Intl

$984United Airlines

Mon, Aug 24 - Mon, Sep 14

12:27 pm - 4:00 pmSTL Lambert-St Louis-MAD Madrid Barajas

20h 33m2 stops Newark Frankfurt am Main

8:55 pm - 6:41 pmMAD Madrid Barajas-STL Lambert-St Louis

28h 46m2 stops Brussels Bruxelles-National Montreal Pierre Elliott Trudeau Intl

$995Multiple Airlines

Mon, Aug 24 - Mon, Sep 14

12:10 pm - 6:50 amSTL Lambert-St Louis-MAD Madrid Barajas

11h 40m1 stop Montreal Pierre Elliott Trudeau Intl

12:45 pm - 2:57 pmMAD Madrid Barajas-STL Lambert-St Louis

33h 12m2 stops Montreal Pierre Elliott Trudeau Intl Chicago O'Hare Intl

$1,092United Airlines

Fri, Aug 21 - Tue, Sep 1

8:00 am - 6:50 amSTL Lambert-St Louis-MAD Madrid Barajas

15h 50m2 stops Chicago O'Hare Intl Montreal Pierre Elliott Trudeau Intl

12:45 pm - 10:12 amMAD Madrid Barajas-STL Lambert-St Louis

28h 27m2 stops Montreal Pierre Elliott Trudeau Intl Chicago O'Hare Intl

$1,097United Airlines

Fri, Aug 21 - Tue, Sep 1

9:32 am - 12:45 pmSTL Lambert-St Louis-IBZ Ibiza

20h 13m2 stops Chicago O'Hare Intl Madrid Barajas

9:45 pm - 12:14 amIBZ Ibiza-STL Lambert-St Louis

33h 29m2 stops Madrid Barajas Chicago O'Hare Intl

$1,144Iberia

Fri, Aug 21 - Sun, Aug 23

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Air Canada flights from St. Louis to Spain

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

Air Canada

Sep 27

STL12:10 pmLambert-St Louis

11h 40m

1 stop

MAD6:50 amMadrid Barajas

Oct 13

MAD1:30 pmMadrid Barajas

31h 30m

1 stop

STL2:00 pmLambert-St Louis

$684

Air Canada

Oct 13

STL8:55 amLambert-St Louis

14h 55m

2 stops

MAD6:50 amMadrid Barajas

Oct 21

MAD12:45 pmMadrid Barajas

30h 28m

2 stops

STL12:13 pmLambert-St Louis

$717

Air Canada

Oct 13

STL12:10 pmLambert-St Louis

11h 40m

1 stop

MAD6:50 amMadrid Barajas

Oct 21

MAD12:45 pmMadrid Barajas

12h 56m

1 stop

STL6:41 pmLambert-St Louis

$723

American Airlines flights from St. Louis to Spain

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

American Airlines

Dec 15

STL10:35 amLambert-St Louis

12h 10m

1 stop

MAD5:45 amMadrid Barajas

Dec 25

MAD12:40 pmMadrid Barajas

13h 50m

1 stop

STL7:30 pmLambert-St Louis

$761

American Airlines

Sep 22

STL8:54 amLambert-St Louis

23h 26m

2 stops

TFS2:20 pmGranadilla Tenerife-Sur

Sep 29

TFS6:25 amGranadilla Tenerife-Sur

22h 17m

2 stops

STL10:42 pmLambert-St Louis

$971

American Airlines

Sep 2

STL9:44 amLambert-St Louis

19h 16m

1 stop

BCN12:00 pmBarcelona-El Prat

Sep 14

BCN3:50 pmBarcelona-El Prat

15h 09m

1 stop

STL11:59 pmLambert-St Louis

$1,172

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisMadrid

STL Lambert-St Louis - MAD Madrid Barajas

STLMAD

Lambert-St Louis

Sun 9/27

12:10 pm-6:50 am

1 stop11h 40m

Madrid Barajas

Tue 10/13

1:30 pm-2:00 pm

1 stop31h 30m

$684

Quickest round-trip

St. LouisMadrid

STL Lambert-St Louis - MAD Madrid Barajas

STLMAD

Lambert-St Louis

Tue 9/29

2:40 pm-8:50 am

1 stop11h 10m

Madrid Barajas

Fri 10/9

1:30 pm-8:00 pm

1 stop13h 30m

$689

St. LouisMadrid

STL Lambert-St Louis - MAD Madrid Barajas

STLMAD

Lambert-St Louis

Sun 10/4

12:10 pm-6:50 am

1 stop11h 40m

Madrid Barajas

Wed 10/14

12:45 pm-12:13 pm

2 stops30h 28m

$709

St. LouisMadrid

STL Lambert-St Louis - MAD Madrid Barajas

STLMAD

Lambert-St Louis

Sun 11/8

11:32 am-9:35 am

1 stop15h 03m

Madrid Barajas

Wed 11/18

12:00 pm-6:17 pm

1 stop13h 17m

$709

St. LouisMadrid

STL Lambert-St Louis - MAD Madrid Barajas

STLMAD

Lambert-St Louis

Sun 11/8

6:00 am-9:15 am

1 stop20h 15m

Madrid Barajas

Wed 11/18

1:25 pm-2:30 pm

2 stops32h 05m

$711

St. LouisMadrid

STL Lambert-St Louis - MAD Madrid Barajas

STLMAD

Lambert-St Louis

Mon 9/28

1:29 pm-5:40 pm

2 stops21h 11m

Madrid Barajas

Fri 10/9

6:00 am-1:25 pm

1 stop14h 25m

$720

St. LouisMadrid

STL Lambert-St Louis - MAD Madrid Barajas

STLMAD

Lambert-St Louis

Mon 11/16

10:21 am-7:45 am

1 stop14h 24m

Madrid Barajas

Mon 11/23

7:25 pm-7:25 pm

2 stops31h 00m

$721

St. LouisBarcelona

STL Lambert-St Louis - BCN Barcelona-El Prat

STLBCN

Lambert-St Louis

Sun 9/20

12:10 pm-8:00 am

1 stop12h 50m

Barcelona-El Prat

Tue 10/6

1:15 pm-2:00 pm

1 stop31h 45m

$725

St. LouisValencia

STL Lambert-St Louis - VLC Valencia

STLVLC

Lambert-St Louis

Tue 11/17

1:08 pm-5:30 pm

2 stops21h 22m

Valencia

Fri 11/27

6:05 am-1:45 pm

1 stop14h 40m

$730

St. LouisValencia

STL Lambert-St Louis - VLC Valencia

STLVLC

Lambert-St Louis

Tue 11/17

6:50 pm-5:30 pm

2 stops15h 40m

Valencia

Thu 11/26

6:05 am-3:26 pm

2 stops40h 21m

$738

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 February, then you should wait until April to fly from St. Louis, when ticket prices are also cheap, with an average price of $690.

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 $910 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 $557 on momondo.

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

You could potentially save up to 4% 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	$276
Fastest flight time	12h 00m
Direct flights	None

The best one-way flight to Spain from St. Louis in the past 72 hours is $276. The best round-trip flight deal from St. Louis to Spain found on momondo in the last 72 hours is $684.

The fastest flight from St. Louis to Spain takes 12h 00m

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 August 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 8,204 reviews	Search Lufthansa flights
Delta	PriceFrom $489	Free Cancellation	Rating 7.8 8,505 reviews	Search Delta flights
British Airways	PriceFrom $516	Free Cancellation	Rating 6.7 8,179 reviews	Search British Airways flights
Iberia	PriceFrom $523	Free Cancellation	Rating 7.0 3,259 reviews	Search Iberia flights
United Airlines	PriceFrom $560	Free Cancellation	Rating 7.4 10,101 reviews	Search United Airlines flights
American Airlines	PriceFrom $581	Free Cancellation	Rating 7.1 11,969 reviews	Search American Airlines flights
Air Canada	PriceFrom $624	Free Cancellation	Rating 7.1 11,507 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.