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

Lufthansa, United Airlines, and Delta 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.

$325 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

$685Air 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 - 2:00 pmMAD Madrid Barajas-STL Lambert-St Louis

31h 30m1 stop Toronto Pearson Intl

$688Air Canada

Mon, Sep 21 - Tue, Oct 6

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

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

11h 40m1 stop Montreal Pierre Elliott Trudeau Intl

12:45 pm - 3:43 pmMAD Madrid Barajas-STL Lambert-St Louis

33h 58m2 stops Montreal Pierre Elliott Trudeau Intl Chicago O'Hare Intl

$709United Airlines

Tue, Sep 29 - Fri, Oct 9

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

14h 24m1 stop Dallas/Fort Worth

12:40 pm - 11:58 pmMAD Madrid Barajas-STL Lambert-St Louis

18h 18m1 stop Charlotte Douglas

$713British Airways

Tue, Nov 24 - Thu, Nov 26

9:35 pm - 5:30 pmSTL Lambert-St Louis-MAD Madrid Barajas

12h 55m1 stop London Heathrow

9:00 pm - 6:16 pmMAD Madrid Barajas-STL Lambert-St Louis

28h 16m2 stops London Heathrow Chicago O'Hare Intl

$713Iberia

Tue, Oct 13 - Mon, Oct 19

3:30 pm - 12:15 pmSTL Lambert-St Louis-MAD Madrid Barajas

13h 45m1 stop Frankfurt am Main

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

14h 25m1 stop Frankfurt am Main

$714Lufthansa

Tue, Sep 29 - Fri, Oct 9

3:30 pm - 4:00 pmSTL Lambert-St Louis-MAD Madrid Barajas

17h 30m1 stop Frankfurt am Main

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

14h 25m1 stop Frankfurt am Main

$714Lufthansa

Mon, Sep 28 - Fri, Oct 9

2:54 pm - 12:15 pmSTL Lambert-St Louis-MAD Madrid Barajas

14h 21m2 stops Boston Logan Intl London Heathrow

1:15 pm - 10:44 pmMAD Madrid Barajas-STL Lambert-St Louis

16h 29m1 stop Philadelphia

$734Iberia

Tue, Dec 15 - Thu, Jan 14

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

14h 24m1 stop Dallas/Fort Worth

1:00 pm - 7:25 pmMAD Madrid Barajas-STL Lambert-St Louis

13h 25m1 stop Chicago O'Hare Intl

$738British Airways

Tue, Nov 24 - Tue, Dec 1

Cheap last minute flights

Enter your travel dates to find the best prices.

8:55 am - 8:50 amSTL Lambert-St Louis-MAD Madrid Barajas

16h 55m1 stop Toronto Pearson Intl

1:30 pm - 8:24 pmMAD Madrid Barajas-STL Lambert-St Louis

13h 54m1 stop Toronto Pearson Intl

$942Multiple Airlines

Tue, Aug 11 - Fri, Aug 21

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

11h 10m1 stop Toronto Pearson Intl

8:25 am - 8:24 pmMAD Madrid Barajas-STL Lambert-St Louis

18h 59m2 stops Frankfurt am Main Toronto Pearson Intl

$943Multiple Airlines

Tue, Aug 11 - Fri, Aug 21

8:50 am - 11:00 amSTL Lambert-St Louis-VLC Valencia

19h 10m2 stops Chicago O'Hare Intl Munich Franz Josef Strauss

5:55 am - 3:38 pmVLC Valencia-STL Lambert-St Louis

40h 43m3 stops Frankfurt am Main San Francisco Chicago O'Hare Intl

$1,004United Airlines

Thu, Aug 13 - Thu, Aug 20

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

12h 50m1 stop Montreal Pierre Elliott Trudeau Intl

12:15 pm - 12:02 pmBCN Barcelona-El Prat-STL Lambert-St Louis

30h 47m2 stops Montreal Pierre Elliott Trudeau Intl Chicago O'Hare Intl

$1,083United Airlines

Fri, Aug 14 - Wed, Aug 19

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

12h 50m1 stop Montreal Pierre Elliott Trudeau Intl

1:15 pm - 2:57 pmBCN Barcelona-El Prat-STL Lambert-St Louis

32h 42m2 stops Toronto Pearson Intl Chicago O'Hare Intl

$1,087Air Canada

Fri, Aug 14 - Wed, Aug 19

7:25 am - 8:00 amSTL Lambert-St Louis-BCN Barcelona-El Prat

17h 35m2 stops Chicago O'Hare Intl Montreal Pierre Elliott Trudeau Intl

1:15 pm - 2:57 pmBCN Barcelona-El Prat-STL Lambert-St Louis

32h 42m2 stops Toronto Pearson Intl Chicago O'Hare Intl

$1,092Air Canada

Fri, Aug 14 - Wed, Aug 19

9:35 pm - 2:15 pmSTL Lambert-St Louis-BCN Barcelona-El Prat

33h 40m1 stop London Heathrow

9:30 pm - 7:30 pmBCN Barcelona-El Prat-STL Lambert-St Louis

29h 00m1 stop London Heathrow

$1,105British Airways

Tue, Aug 11 - Tue, Aug 18

8:07 pm - 12:15 amSTL Lambert-St Louis-VLC Valencia

21h 08m2 stops Chicago O'Hare Intl Madrid Barajas

9:20 pm - 7:30 pmVLC Valencia-STL Lambert-St Louis

29h 10m1 stop London Heathrow

$1,246Iberia

Thu, Aug 13 - Thu, Aug 20

12:27 pm - 7:50 pmSTL Lambert-St Louis-MAD Madrid Barajas

24h 23m2 stops Newark Frankfurt am Main

8:20 am - 11:38 pmMAD Madrid Barajas-STL Lambert-St Louis

22h 18m2 stops Frankfurt am Main Newark

$1,534Lufthansa

Tue, Aug 11 - Thu, Aug 13

10:22 am - 8:25 amSTL Lambert-St Louis-IBZ Ibiza

15h 03m2 stops Charlotte Douglas Madrid Barajas

9:05 am - 10:40 pmIBZ Ibiza-STL Lambert-St Louis

20h 35m2 stops Madrid Barajas Charlotte Douglas

$1,559British Airways

Mon, Aug 10 - Wed, Aug 12

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Finnair flights from St. Louis to Spain

Our best Finnair deals on St. Louis to Spain flight tickets

Finnair

Sep 27

STL5:18 pmLambert-St Louis

13h 12m

1 stop

MAD1:30 pmMadrid Barajas

Oct 13

MAD1:35 pmMadrid Barajas

17h 34m

1 stop

STL12:09 amLambert-St Louis

$691

Finnair

Aug 11

STL4:54 pmLambert-St Louis

11h 01m

1 stop

BCN10:55 amBarcelona-El Prat

Aug 18

BCN9:10 pmBarcelona-El Prat

30h 16m

2 stops

STL8:26 pmLambert-St Louis

$1,077

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

$685

Air Canada

Sep 21

STL2:40 pmLambert-St Louis

11h 10m

1 stop

MAD8:50 amMadrid Barajas

Oct 6

MAD1:30 pmMadrid Barajas

31h 30m

1 stop

STL2:00 pmLambert-St Louis

$688

Air Canada

Sep 27

STL12:10 pmLambert-St Louis

11h 40m

1 stop

MAD6:50 amMadrid Barajas

Oct 13

MAD6:20 amMadrid Barajas

20h 40m

2 stops

STL8:00 pmLambert-St Louis

$696

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

$685

St. LouisMadrid

STL Lambert-St Louis - MAD Madrid Barajas

STLMAD

Lambert-St Louis

Mon 9/21

2:40 pm-8:50 am

1 stop11h 10m

Madrid Barajas

Tue 10/6

1:30 pm-2:00 pm

1 stop31h 30m

$688

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

Tue 9/29

12:10 pm-6:50 am

1 stop11h 40m

Madrid Barajas

Fri 10/9

12:45 pm-3:43 pm

2 stops33h 58m

$709

St. LouisMadrid

STL Lambert-St Louis - MAD Madrid Barajas

STLMAD

Lambert-St Louis

Tue 11/24

10:21 am-7:45 am

1 stop14h 24m

Madrid Barajas

Thu 11/26

12:40 pm-11:58 pm

1 stop18h 18m

$713

St. LouisMadrid

STL Lambert-St Louis - MAD Madrid Barajas

STLMAD

Lambert-St Louis

Tue 10/13

9:35 pm-5:30 pm

1 stop12h 55m

Madrid Barajas

Mon 10/19

9:00 pm-6:16 pm

2 stops28h 16m

$713

St. LouisMadrid

STL Lambert-St Louis - MAD Madrid Barajas

STLMAD

Lambert-St Louis

Tue 9/29

3:30 pm-12:15 pm

1 stop13h 45m

Madrid Barajas

Fri 10/9

6:00 am-1:25 pm

1 stop14h 25m

$714

St. LouisMadrid

STL Lambert-St Louis - MAD Madrid Barajas

STLMAD

Lambert-St Louis

Mon 9/28

3:30 pm-4:00 pm

1 stop17h 30m

Madrid Barajas

Fri 10/9

6:00 am-1:25 pm

1 stop14h 25m

$714

St. LouisMadrid

STL Lambert-St Louis - MAD Madrid Barajas

STLMAD

Lambert-St Louis

Tue 12/15

2:54 pm-12:15 pm

2 stops14h 21m

Madrid Barajas

Thu 1/14

1:15 pm-10:44 pm

1 stop16h 29m

$734

Quickest round-trip

St. LouisMadrid

STL Lambert-St Louis - MAD Madrid Barajas

STLMAD

Lambert-St Louis

Tue 11/24

10:21 am-7:45 am

1 stop14h 24m

Madrid Barajas

Tue 12/1

1:00 pm-7:25 pm

1 stop13h 25m

$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 $902 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

Fastest flight time	11h 40m
Direct flights	None

The fastest flight from St. Louis to Spain takes 11h 40m

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 8,176 reviews	Search Lufthansa flights
Delta	PriceFrom $489	Free Cancellation	Rating 7.8 8,497 reviews	Search Delta flights
British Airways	PriceFrom $516	Free Cancellation	Rating 6.7 8,152 reviews	Search British Airways flights
Iberia	PriceFrom $523	Free Cancellation	Rating 7.0 3,263 reviews	Search Iberia flights
United Airlines	PriceFrom $560	Free Cancellation	Rating 7.4 10,092 reviews	Search United Airlines flights
American Airlines	PriceFrom $581	Free Cancellation	Rating 7.1 11,894 reviews	Search American Airlines flights
Air Canada	PriceFrom $624	Free Cancellation	Rating 7.1 11,455 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.