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

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

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.

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.

$350 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.

8:55 am - 8:50 am

STL

MAD

16h 55m

1 stop

5:55 am - 1:25 pm

MAD

STL

14h 30m

1 stop

$702Multiple Airlines

Tue, Oct 6 - Tue, Oct 20

12:10 pm - 6:50 am

STL

MAD

11h 40m

1 stop

12:45 pm - 11:06 am

MAD

STL

29h 21m

2 stops

$715United Airlines

Mon, Aug 17 - Fri, Sep 18

2:40 pm - 8:50 am

STL

MAD

11h 10m

1 stop

12:45 pm - 3:38 pm

MAD

STL

33h 53m

2 stops

$720Air Canada

Sun, Aug 16 - Fri, Sep 18

9:35 pm - 8:05 pm

STL

MAD

15h 30m

1 stop

12:40 pm - 11:31 pm

MAD

STL

16h 51m

1 stop

$723British Airways

Wed, Oct 21 - Fri, Oct 30

9:35 pm - 7:35 pm

STL

VLC

15h 00m

1 stop

9:40 am - 11:25 pm

VLC

STL

20h 45m

2 stops

$738American Airlines

Tue, Sep 29 - Fri, Oct 16

8:07 pm - 7:35 pm

STL

VLC

16h 28m

2 stops

6:15 am - 6:04 pm

VLC

STL

18h 49m

2 stops

$743American Airlines

Tue, Sep 29 - Fri, Oct 16

9:35 pm - 5:25 pm

STL

VLC

12h 50m

1 stop

11:25 am - 7:30 pm

VLC

STL

15h 05m

1 stop

$778British Airways

Fri, Oct 2 - Wed, Oct 7

1:05 pm - 8:00 am

STL

BCN

11h 55m

1 stop

12:15 pm - 8:25 pm

BCN

STL

15h 10m

1 stop

$994Air Canada

Sun, May 3 - Tue, May 19

11:18 am - 3:55 pm

STL

LPA

22h 37m

2 stops

9:15 am - 9:09 am

LPA

STL

29h 54m

2 stops

$1,352Iberia

Wed, Jun 10 - Wed, Jun 17

7:52 pm - 9:15 am

STL

LEI

54h 23m

2 stops

9:25 am - 9:09 am

LEI

STL

30h 44m

2 stops

$1,476Iberia

Sun, Jun 7 - Sun, Jun 14

Delta flights from St. Louis to Spain

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

Delta

Sep 29

STL1:30 pmLambert-St Louis

15h 45m

1 stop

MAD12:15 pmMadrid Barajas

Oct 9

MAD12:45 pmMadrid Barajas

17h 54m

2 stops

STL11:39 pmLambert-St Louis

$741

Delta

Sep 18

STL5:30 pmLambert-St Louis

16h 15m

2 stops

MAD4:45 pmMadrid Barajas

Oct 6

MAD6:00 amMadrid Barajas

18h 06m

2 stops

STL5:06 pmLambert-St Louis

$792

Delta

Sep 29

STL7:20 amLambert-St Louis

19h 35m

2 stops

MAD9:55 amMadrid Barajas

Oct 9

MAD12:45 pmMadrid Barajas

17h 33m

2 stops

STL11:18 pmLambert-St Louis

$800

Air Canada flights from St. Louis to Spain

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

Air Canada

Aug 16

STL2:40 pmLambert-St Louis

11h 10m

1 stop

MAD8:50 amMadrid Barajas

Sep 18

MAD12:45 pmMadrid Barajas

33h 53m

2 stops

STL3:38 pmLambert-St Louis

$720

Air Canada

Aug 16

STL8:55 amLambert-St Louis

16h 55m

1 stop

MAD8:50 amMadrid Barajas

Sep 18

MAD12:45 pmMadrid Barajas

12h 56m

1 stop

STL6:41 pmLambert-St Louis

$733

Air Canada

Aug 15

STL12:10 pmLambert-St Louis

37h 40m

2 stops

MAD8:50 amMadrid Barajas

Sep 18

MAD12:45 pmMadrid Barajas

12h 56m

1 stop

STL6:41 pmLambert-St Louis

$737

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Tue 10/6

8:55 am-8:50 am

1 stop16h 55m

Madrid Barajas

Tue 10/20

5:55 am-1:25 pm

1 stop14h 30m

$702

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Mon 8/17

12:10 pm-6:50 am

1 stop11h 40m

Madrid Barajas

Fri 9/18

12:45 pm-11:06 am

2 stops29h 21m

$715

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Sun 8/16

2:40 pm-8:50 am

1 stop11h 10m

Madrid Barajas

Fri 9/18

12:45 pm-3:38 pm

2 stops33h 53m

$720

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 10/21

9:35 pm-8:05 pm

1 stop15h 30m

Madrid Barajas

Fri 10/30

12:40 pm-11:31 pm

1 stop16h 51m

$723

St. LouisValencia

STL - VLC

STLVLC

Lambert-St Louis

Tue 9/29

9:35 pm-7:35 pm

1 stop15h 00m

Valencia

Fri 10/16

9:40 am-11:25 pm

2 stops20h 45m

$738

St. LouisValencia

STL - VLC

STLVLC

Lambert-St Louis

Tue 9/29

8:07 pm-7:35 pm

2 stops16h 28m

Valencia

Fri 10/16

6:15 am-6:04 pm

2 stops18h 49m

$743

St. LouisValencia

STL - VLC

STLVLC

Lambert-St Louis

Fri 10/2

9:35 pm-5:25 pm

1 stop12h 50m

Valencia

Wed 10/7

11:25 am-7:30 pm

1 stop15h 05m

$778

Quickest round-trip

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Sun 5/3

1:05 pm-8:00 am

1 stop11h 55m

Barcelona-El Prat

Tue 5/19

12:15 pm-8:25 pm

1 stop15h 10m

$994

St. LouisLas Palmas de Gran Canaria

STL - LPA

STLLPA

Lambert-St Louis

Wed 6/10

11:18 am-3:55 pm

2 stops22h 37m

Las Palmas de Gran Canaria

Wed 6/17

9:15 am-9:09 am

2 stops29h 54m

$1,352

St. LouisAlmería

STL - LEI

STLLEI

Lambert-St Louis

Sun 6/7

7:52 pm-9:15 am

2 stops54h 23m

Almeria

Sun 6/14

9:25 am-9:09 am

2 stops30h 44m

$1,476

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 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 $827 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 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	11h 35m
Direct flights	None

The fastest flight from St. Louis to Spain takes 11h 35m

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 7,953 reviews	Search Lufthansa flights
Delta	PriceFrom $489	Free Cancellation	Rating 7.9 8,461 reviews	Search Delta flights
British Airways	PriceFrom $516	Free Cancellation	Rating 6.7 7,917 reviews	Search British Airways flights
Air Canada	PriceFrom $560	Free Cancellation	Rating 7.1 10,970 reviews	Search Air Canada flights
United Airlines	PriceFrom $560	Free Cancellation	Rating 7.4 9,657 reviews	Search United Airlines flights
Iberia	PriceFrom $568	Free Cancellation	Rating 7.0 3,196 reviews	Search Iberia flights
American Airlines	PriceFrom $581	Free Cancellation	Rating 7.1 11,677 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.