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

United Airlines, Aer Lingus, and American Airlines 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 34% of people opting to fly with this airline when traveling to Spain. Keep in mind that there are 8 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 March 2026, there are 8 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.

12:10 pm - 6:50 am

STL

MAD

11h 40m

1 stop

12:45 pm - 3:38 pm

MAD

STL

33h 53m

2 stops

$615Air Canada

Mon, Aug 17 - Wed, Sep 9

5:00 am - 6:50 am

STL

MAD

18h 50m

2 stops

12:45 pm - 3:38 pm

MAD

STL

33h 53m

2 stops

$619Air Canada

Mon, Aug 17 - Wed, Sep 9

9:35 pm - 8:05 pm

STL

MAD

15h 30m

1 stop

12:10 pm - 7:30 pm

MAD

STL

14h 20m

1 stop

$629British Airways

Tue, Aug 18 - Wed, Sep 9

12:10 pm - 6:50 am

STL

MAD

11h 40m

1 stop

1:30 pm - 2:00 pm

MAD

STL

31h 30m

1 stop

$633United Airlines

Mon, Aug 17 - Wed, Sep 9

1:01 pm - 5:30 am

STL

MAD

33h 29m

1 stop

1:35 pm - 8:03 pm

MAD

STL

13h 28m

1 stop

$636British Airways

Sat, Aug 15 - Sat, Sep 12

8:03 pm - 9:25 am

STL

BCN

30h 22m

2 stops

10:30 am - 10:17 pm

BCN

STL

18h 47m

1 stop

$650Iberia

Wed, Apr 8 - Wed, Apr 15

8:03 pm - 9:25 am

STL

BCN

30h 22m

2 stops

9:15 am - 7:33 pm

BCN

STL

17h 18m

2 stops

$660Iberia

Wed, Apr 8 - Wed, Apr 15

9:10 am - 8:00 am

STL

BCN

15h 50m

2 stops

11:15 am - 9:13 pm

BCN

STL

16h 58m

2 stops

$661United Airlines

Wed, Apr 8 - Tue, Apr 14

9:10 am - 8:30 am

STL

BIO

16h 20m

2 stops

9:15 am - 7:33 pm

BIO

STL

17h 18m

2 stops

$809American Airlines

Thu, Apr 23 - Thu, Apr 30

2:33 pm - 3:55 pm

STL

LPA

19h 22m

2 stops

6:30 am - 7:33 pm

LPA

STL

19h 03m

2 stops

$819American Airlines

Wed, Apr 22 - Wed, Apr 29

Lufthansa flights from St. Louis to Spain

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

Lufthansa

Apr 23

STL8:15 pmLambert-St Louis

29h 45m

2 stops

MAD9:00 amMadrid Barajas

Apr 30

MAD10:50 amMadrid Barajas

18h 55m

2 stops

STL10:45 pmLambert-St Louis

$726

Lufthansa

Apr 12

STL6:55 pmLambert-St Louis

15h 45m

2 stops

MAD5:40 pmMadrid Barajas

Apr 28

MAD11:50 amMadrid Barajas

16h 23m

2 stops

STL9:13 pmLambert-St Louis

$737

Lufthansa

Apr 26

STL6:55 pmLambert-St Louis

15h 15m

2 stops

VLC5:10 pmValencia

May 3

VLC5:55 amValencia

14h 30m

1 stop

STL1:25 pmLambert-St Louis

$740

United Airlines flights from St. Louis to Spain

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

United Airlines

Aug 17

STL12:10 pmLambert-St Louis

11h 40m

1 stop

MAD6:50 amMadrid Barajas

Sep 9

MAD1:30 pmMadrid Barajas

31h 30m

1 stop

STL2:00 pmLambert-St Louis

$633

United Airlines

Apr 14

STL11:15 amLambert-St Louis

13h 50m

2 stops

MAD8:05 amMadrid Barajas

Apr 22

MAD10:50 amMadrid Barajas

18h 02m

2 stops

STL9:52 pmLambert-St Louis

$650

United Airlines

Apr 8

STL9:10 amLambert-St Louis

15h 50m

2 stops

BCN8:00 amBarcelona-El Prat

Apr 14

BCN11:15 amBarcelona-El Prat

16h 58m

2 stops

STL9:13 pmLambert-St Louis

$661

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Mon 8/17

12:10 pm-6:50 am

1 stop11h 40m

Madrid Barajas

Wed 9/9

12:45 pm-3:38 pm

2 stops33h 53m

$615

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Mon 8/17

5:00 am-6:50 am

2 stops18h 50m

Madrid Barajas

Wed 9/9

12:45 pm-3:38 pm

2 stops33h 53m

$619

Quickest round-trip

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Tue 8/18

9:35 pm-8:05 pm

1 stop15h 30m

Madrid Barajas

Wed 9/9

12:10 pm-7:30 pm

1 stop14h 20m

$629

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Mon 8/17

12:10 pm-6:50 am

1 stop11h 40m

Madrid Barajas

Wed 9/9

1:30 pm-2:00 pm

1 stop31h 30m

$633

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Sat 8/15

1:01 pm-5:30 am

1 stop33h 29m

Madrid Barajas

Sat 9/12

1:35 pm-8:03 pm

1 stop13h 28m

$636

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Wed 4/8

8:03 pm-9:25 am

2 stops30h 22m

Barcelona-El Prat

Wed 4/15

10:30 am-10:17 pm

1 stop18h 47m

$650

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Wed 4/8

8:03 pm-9:25 am

2 stops30h 22m

Barcelona-El Prat

Wed 4/15

9:15 am-7:33 pm

2 stops17h 18m

$660

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Wed 4/8

9:10 am-8:00 am

2 stops15h 50m

Barcelona-El Prat

Tue 4/14

11:15 am-9:13 pm

2 stops16h 58m

$661

St. LouisBilbao

STL - BIO

STLBIO

Lambert-St Louis

Thu 4/23

9:10 am-8:30 am

2 stops16h 20m

Bilbao

Thu 4/30

9:15 am-7:33 pm

2 stops17h 18m

$809

St. LouisLas Palmas de Gran Canaria

STL - LPA

STLLPA

Lambert-St Louis

Wed 4/22

2:33 pm-3:55 pm

2 stops19h 22m

Las Palmas de Gran Canaria

Wed 4/29

6:30 am-7:33 pm

2 stops19h 03m

$819

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 $855 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 $628 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

Fastest flight time	10h 44m
Direct flights	None

The fastest flight from St. Louis to Spain takes 10h 44m

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

Search flight deals

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 March 2026, there are 8 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 7,848 reviews	Search Lufthansa flights
British Airways	PriceFrom $516	Free Cancellation	Rating 6.7 7,784 reviews	Search British Airways flights
Iberia	PriceFrom $552	Free Cancellation	Rating 7.0 3,134 reviews	Search Iberia flights
Delta	PriceFrom $552	Free Cancellation	Rating 7.9 8,288 reviews	Search Delta flights
United Airlines	PriceFrom $560	Free Cancellation	Rating 7.4 9,421 reviews	Search United Airlines flights
American Airlines	PriceFrom $582	Free Cancellation	Rating 7.1 11,450 reviews	Search American Airlines flights
Air Canada	PriceFrom $593	Free Cancellation	Rating 7.1 10,800 reviews	Search Air Canada flights
KLM	PriceFrom $634	Free Cancellation	Rating 7.8 1,471 reviews	Search KLM 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.