What airlines fly to Spain?

United Airlines, American Airlines and British Airways 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 36% 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.

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

British Airways, Delta, and United Airlines are the most popular carriers operating from Lambert-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.

$414 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.

9:35 pm - 5:35 pm

STL

MAD

13h 00m

1 stop

12:10 pm - 7:30 pm

MAD

STL

14h 20m

1 stop

$721British Airways

Wed, Oct 7 - Wed, Oct 21

9:35 pm - 5:35 pm

STL

MAD

13h 00m

1 stop

12:40 pm - 11:31 pm

MAD

STL

17h 51m

1 stop

$723British Airways

Wed, Oct 7 - Wed, Oct 21

6:40 am - 8:05 am

STL

MAD

18h 25m

2 stops

1:30 pm - 4:26 pm

MAD

STL

33h 56m

2 stops

$725United Airlines

Wed, Oct 7 - Wed, Oct 21

6:49 pm - 5:40 pm

STL

MAD

15h 51m

2 stops

5:55 am - 1:25 pm

MAD

STL

14h 30m

1 stop

$726Lufthansa

Mon, Oct 5 - Wed, Oct 14

3:30 pm - 7:30 pm

STL

MAD

21h 00m

1 stop

1:30 pm - 2:00 pm

MAD

STL

31h 30m

1 stop

$728Multiple Airlines

Mon, Oct 5 - Wed, Oct 14

6:40 am - 9:50 am

STL

MAD

20h 10m

2 stops

5:55 am - 1:25 pm

MAD

STL

14h 30m

1 stop

$735United Airlines

Wed, Oct 7 - Wed, Oct 21

8:07 pm - 1:30 pm

STL

MAD

10h 23m

1 stop

3:55 pm - 11:41 pm

MAD

STL

14h 46m

1 stop

$736American Airlines

Tue, Sep 29 - Fri, Oct 9

9:40 pm - 7:35 pm

STL

BCN

14h 55m

1 stop

12:30 pm - 11:41 pm

BCN

STL

18h 11m

2 stops

$777Iberia

Sun, Oct 11 - Thu, Oct 15

9:46 am - 9:45 am

STL

BCN

16h 59m

2 stops

12:50 pm - 11:41 pm

BCN

STL

17h 51m

1 stop

$783Iberia

Wed, Sep 23 - Wed, Oct 7

2:15 pm - 11:15 am

STL

SVQ

38h 00m

2 stops

12:20 pm - 12:21 pm

SVQ

STL

55h 01m

2 stops

$1,488Air Canada

Sat, Jun 13 - Sat, Jun 20

British Airways flights from St. Louis to Spain

Our best British Airways deals on St. Louis to Spain flight tickets

British Airways

Oct 7

STL9:35 pmLambert-St Louis

13h 00m

1 stop

MAD5:35 pmMadrid Barajas

Oct 21

MAD12:10 pmMadrid Barajas

14h 20m

1 stop

STL7:30 pmLambert-St Louis

$721

British Airways

Oct 7

STL9:35 pmLambert-St Louis

13h 00m

1 stop

MAD5:35 pmMadrid Barajas

Oct 21

MAD12:40 pmMadrid Barajas

17h 51m

1 stop

STL11:31 pmLambert-St Louis

$723

British Airways

Oct 18

STL9:40 pmLambert-St Louis

12h 50m

1 stop

MAD5:30 pmMadrid Barajas

Oct 25

MAD4:40 pmMadrid Barajas

12h 45m

1 stop

STL11:25 pmLambert-St Louis

$773

United Airlines flights from St. Louis to Spain

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

United Airlines

Oct 7

STL6:40 amLambert-St Louis

18h 25m

2 stops

MAD8:05 amMadrid Barajas

Oct 21

MAD1:30 pmMadrid Barajas

33h 56m

2 stops

STL4:26 pmLambert-St Louis

$725

United Airlines

Oct 7

STL6:40 amLambert-St Louis

20h 10m

2 stops

MAD9:50 amMadrid Barajas

Oct 21

MAD5:55 amMadrid Barajas

14h 30m

1 stop

STL1:25 pmLambert-St Louis

$735

United Airlines

Oct 7

STL6:40 amLambert-St Louis

18h 25m

2 stops

MAD8:05 amMadrid Barajas

Oct 21

MAD5:55 amMadrid Barajas

14h 30m

1 stop

STL1:25 pmLambert-St Louis

$737

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 10/7

9:35 pm-5:35 pm

1 stop13h 00m

Madrid Barajas

Wed 10/21

12:10 pm-7:30 pm

1 stop14h 20m

$721

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 10/7

9:35 pm-5:35 pm

1 stop13h 00m

Madrid Barajas

Wed 10/21

12:40 pm-11:31 pm

1 stop17h 51m

$723

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 10/7

6:40 am-8:05 am

2 stops18h 25m

Madrid Barajas

Wed 10/21

1:30 pm-4:26 pm

2 stops33h 56m

$725

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Mon 10/5

6:49 pm-5:40 pm

2 stops15h 51m

Madrid Barajas

Wed 10/14

5:55 am-1:25 pm

1 stop14h 30m

$726

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Mon 10/5

3:30 pm-7:30 pm

1 stop21h 00m

Madrid Barajas

Wed 10/14

1:30 pm-2:00 pm

1 stop31h 30m

$728

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 10/7

6:40 am-9:50 am

2 stops20h 10m

Madrid Barajas

Wed 10/21

5:55 am-1:25 pm

1 stop14h 30m

$735

Quickest round-trip

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Tue 9/29

8:07 pm-1:30 pm

1 stop10h 23m

Madrid Barajas

Fri 10/9

3:55 pm-11:41 pm

1 stop14h 46m

$736

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Sun 10/11

9:40 pm-7:35 pm

1 stop14h 55m

Barcelona-El Prat

Thu 10/15

12:30 pm-11:41 pm

2 stops18h 11m

$777

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Wed 9/23

9:46 am-9:45 am

2 stops16h 59m

Barcelona-El Prat

Wed 10/7

12:50 pm-11:41 pm

1 stop17h 51m

$783

St. LouisSeville

STL - SVQ

STLSVQ

Lambert-St Louis

Sat 6/13

2:15 pm-11:15 am

2 stops38h 00m

Sevilla

Sat 6/20

12:20 pm-12:21 pm

2 stops55h 01m

$1,488

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 April to fly from St. Louis, when ticket prices are also cheap, with an average price of $634.

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 $825 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 6% 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 45m
Direct flights	None

The fastest flight from St. Louis to Spain takes 10h 45m

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 7,937 reviews	Search Lufthansa flights
Delta	PriceFrom $489	Free Cancellation	Rating 7.9 8,434 reviews	Search Delta flights
British Airways	PriceFrom $516	Free Cancellation	Rating 6.7 7,901 reviews	Search British Airways flights
United Airlines	PriceFrom $560	Free Cancellation	Rating 7.4 9,613 reviews	Search United Airlines flights
Iberia	PriceFrom $568	Free Cancellation	Rating 7.0 3,186 reviews	Search Iberia flights
Air Canada	PriceFrom $576	Free Cancellation	Rating 7.1 10,949 reviews	Search Air Canada flights
American Airlines	PriceFrom $581	Free Cancellation	Rating 7.1 11,646 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.