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

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

What airlines fly to Spain?

United Airlines, American Airlines and Air Canada 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 35% 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 April 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.

$329 Cheap Flights from St. Louis to Spain in 2026

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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.

12:30 pm - 9:00 am

STL

MAD

13h 30m

1 stop

12:45 pm - 4:26 pm

MAD

STL

34h 41m

2 stops

$715United Airlines

Tue, Sep 22 - Wed, Sep 30

12:30 pm - 9:00 am

STL

MAD

13h 30m

1 stop

1:30 pm - 4:26 pm

MAD

STL

33h 56m

2 stops

$720United Airlines

Tue, Sep 22 - Wed, Sep 30

9:35 pm - 8:05 pm

STL

MAD

15h 30m

1 stop

3:25 pm - 11:41 pm

MAD

STL

15h 16m

1 stop

$722British Airways

Tue, Sep 29 - Fri, Oct 9

7:01 am - 9:05 am

STL

MAD

19h 04m

1 stop

1:35 pm - 8:03 pm

MAD

STL

13h 28m

1 stop

$730British Airways

Tue, Sep 22 - Wed, Sep 30

8:07 pm - 5:35 pm

STL

BCN

14h 28m

2 stops

6:30 pm - 9:16 am

BCN

STL

21h 46m

1 stop

$769Iberia

Mon, Sep 21 - Tue, Sep 29

5:32 pm - 9:20 am

STL

BCN

32h 48m

2 stops

12:15 pm - 8:37 am

BCN

STL

27h 22m

2 stops

$805Air Canada

Mon, Sep 21 - Tue, Sep 29

5:32 pm - 8:00 am

STL

BCN

31h 28m

2 stops

1:15 pm - 8:37 am

BCN

STL

26h 22m

2 stops

$855Air Canada

Sun, Sep 20 - Sun, Sep 27

9:56 am - 9:05 am

STL

VLC

16h 09m

2 stops

6:15 am - 5:03 pm

VLC

STL

17h 48m

2 stops

$902American Airlines

Fri, May 1 - Tue, May 5

12:55 pm - 12:15 am

STL

VLC

28h 20m

2 stops

5:40 pm - 7:33 pm

VLC

STL

32h 53m

2 stops

$927Iberia

Wed, Apr 15 - Mon, Apr 27

11:45 am - 1:10 pm

STL

GRX

18h 25m

2 stops

9:55 am - 7:30 pm

GRX

STL

16h 35m

2 stops

$1,045American Airlines

Tue, May 12 - Tue, May 19

Delta flights from St. Louis to Spain

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

Delta

Sep 2

STL6:00 amLambert-St Louis

17h 20m

2 stops

MAD6:20 amMadrid Barajas

Sep 9

MAD12:45 pmMadrid Barajas

17h 52m

2 stops

STL11:37 pmLambert-St Louis

$858

Delta

Sep 1

STL4:13 pmLambert-St Louis

17h 17m

2 stops

SVQ4:30 pmSevilla

Sep 8

SVQ6:30 amSevilla

24h 07m

2 stops

STL11:37 pmLambert-St Louis

$879

Delta

Sep 1

STL4:13 pmLambert-St Louis

17h 17m

2 stops

SVQ4:30 pmSevilla

Sep 10

SVQ5:15 pmSevilla

30h 40m

2 stops

STL4:55 pmLambert-St Louis

$891

Air Canada flights from St. Louis to Spain

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

Air Canada

Sep 21

STL5:32 pmLambert-St Louis

32h 48m

2 stops

BCN9:20 amBarcelona-El Prat

Sep 29

BCN12:15 pmBarcelona-El Prat

27h 22m

2 stops

STL8:37 amLambert-St Louis

$805

Air Canada

Sep 1

STL8:55 amLambert-St Louis

38h 55m

2 stops

MAD6:50 amMadrid Barajas

Sep 10

MAD1:30 pmMadrid Barajas

29h 43m

2 stops

STL12:13 pmLambert-St Louis

$818

Air Canada

Aug 31

STL5:32 pmLambert-St Louis

32h 18m

2 stops

MAD8:50 amMadrid Barajas

Sep 11

MAD1:30 pmMadrid Barajas

28h 04m

2 stops

STL10:34 amLambert-St Louis

$825

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Tue 9/22

12:30 pm-9:00 am

1 stop13h 30m

Madrid Barajas

Wed 9/30

12:45 pm-4:26 pm

2 stops34h 41m

$715

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Tue 9/22

12:30 pm-9:00 am

1 stop13h 30m

Madrid Barajas

Wed 9/30

1:30 pm-4:26 pm

2 stops33h 56m

$720

Quickest round-trip

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Tue 9/29

9:35 pm-8:05 pm

1 stop15h 30m

Madrid Barajas

Fri 10/9

3:25 pm-11:41 pm

1 stop15h 16m

$722

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Tue 9/22

7:01 am-9:05 am

1 stop19h 04m

Madrid Barajas

Wed 9/30

1:35 pm-8:03 pm

1 stop13h 28m

$730

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Mon 9/21

8:07 pm-5:35 pm

2 stops14h 28m

Barcelona-El Prat

Tue 9/29

6:30 pm-9:16 am

1 stop21h 46m

$769

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Mon 9/21

5:32 pm-9:20 am

2 stops32h 48m

Barcelona-El Prat

Tue 9/29

12:15 pm-8:37 am

2 stops27h 22m

$805

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Sun 9/20

5:32 pm-8:00 am

2 stops31h 28m

Barcelona-El Prat

Sun 9/27

1:15 pm-8:37 am

2 stops26h 22m

$855

St. LouisValencia

STL - VLC

STLVLC

Lambert-St Louis

Fri 5/1

9:56 am-9:05 am

2 stops16h 09m

Valencia

Tue 5/5

6:15 am-5:03 pm

2 stops17h 48m

$902

St. LouisValencia

STL - VLC

STLVLC

Lambert-St Louis

Wed 4/15

12:55 pm-12:15 am

2 stops28h 20m

Valencia

Mon 4/27

5:40 pm-7:33 pm

2 stops32h 53m

$927

St. LouisGranada

STL - GRX

STLGRX

Lambert-St Louis

Tue 5/12

11:45 am-1:10 pm

2 stops18h 25m

Granada Federico Garcia Lorca

Tue 5/19

9:55 am-7:30 pm

2 stops16h 35m

$1,045

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 January, then you should wait until November to fly from St. Louis, when ticket prices are also cheap, with an average price of $663.

How far in advance should I book a flight 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 $861 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 $715 on momondo.

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

You could potentially save up to 2% 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 25m
Direct flights	None

The fastest flight from St. Louis to Spain takes 11h 25m

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 April 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 7,884 reviews	Search Lufthansa flights
Delta	PriceFrom $489	Free Cancellation	Rating 7.9 8,371 reviews	Search Delta flights
British Airways	PriceFrom $516	Free Cancellation	Rating 6.7 7,841 reviews	Search British Airways flights
Iberia	PriceFrom $552	Free Cancellation	Rating 7.0 3,164 reviews	Search Iberia flights
United Airlines	PriceFrom $560	Free Cancellation	Rating 7.4 9,532 reviews	Search United Airlines flights
Air Canada	PriceFrom $576	Free Cancellation	Rating 7.1 10,884 reviews	Search Air Canada flights
American Airlines	PriceFrom $582	Free Cancellation	Rating 7.1 11,548 reviews	Search American Airlines 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.