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

Air Canada, 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 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 July 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.

$300 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.

11:51 am - 6:00 am

STL

MAD

11h 09m

1 stop

12:40 pm - 6:34 pm

MAD

STL

12h 54m

1 stop

$695Multiple Airlines

Wed, Nov 25 - Wed, Feb 10

2:40 pm - 9:35 am

STL

MAD

11h 55m

1 stop

5:55 am - 6:41 pm

MAD

STL

19h 46m

2 stops

$707Multiple Airlines

Wed, Oct 7 - Wed, Oct 21

2:40 pm - 9:35 am

STL

MAD

11h 55m

1 stop

5:55 am - 1:25 pm

MAD

STL

14h 30m

1 stop

$708Multiple Airlines

Wed, Oct 7 - Wed, Oct 21

12:05 pm - 9:15 am

STL

MAD

14h 10m

1 stop

1:25 pm - 12:40 pm

MAD

STL

30h 15m

2 stops

$715United Airlines

Mon, Nov 23 - Wed, Feb 17

5:00 am - 8:00 am

STL

MAD

20h 00m

2 stops

1:25 pm - 2:30 pm

MAD

STL

32h 05m

2 stops

$718United Airlines

Mon, Nov 2 - Thu, Feb 4

1:08 pm - 11:05 pm

STL

BIO

27h 57m

2 stops

6:45 am - 9:13 pm

BIO

STL

21h 28m

2 stops

$734Lufthansa

Tue, Oct 27 - Thu, Nov 12

7:04 pm - 6:05 pm

STL

BIO

17h 01m

2 stops

5:50 pm - 1:45 pm

BIO

STL

26h 55m

1 stop

$749Lufthansa

Sun, Oct 25 - Tue, Nov 17

9:35 pm - 5:15 pm

STL

IBZ

12h 40m

1 stop

11:50 am - 7:30 pm

IBZ

STL

14h 40m

1 stop

$918British Airways

Wed, Aug 19 - Wed, Aug 26

9:35 pm - 12:55 pm

STL

IBZ

32h 20m

1 stop

11:50 am - 7:30 pm

IBZ

STL

14h 40m

1 stop

$922British Airways

Tue, Aug 25 - Wed, Sep 2

1:06 pm - 1:00 pm

STL

EAS

16h 54m

2 stops

9:20 am - 9:56 pm

EAS

STL

19h 36m

2 stops

$924American Airlines

Mon, Oct 5 - Sat, Oct 17

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Air Canada flights from St. Louis to Spain

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

Air Canada

Oct 14

STL2:40 pmLambert-St Louis

11h 55m

1 stop

MAD9:35 amMadrid Barajas

Oct 27

MAD12:25 pmMadrid Barajas

35h 41m

2 stops

STL6:06 pmLambert-St Louis

$719

Air Canada

Oct 24

STL2:40 pmLambert-St Louis

58h 20m

2 stops

MAD8:00 amMadrid Barajas

Nov 18

MAD1:25 pmMadrid Barajas

29h 41m

2 stops

STL12:06 pmLambert-St Louis

$722

Air Canada

Nov 22

STL1:08 pmLambert-St Louis

35h 52m

2 stops

MAD8:00 amMadrid Barajas

Feb 16

MAD6:00 amMadrid Barajas

40h 26m

2 stops

STL3:26 pmLambert-St Louis

$734

United Airlines flights from St. Louis to Spain

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

United Airlines

Nov 23

STL2:00 pmLambert-St Louis

12h 15m

1 stop

MAD9:15 amMadrid Barajas

Feb 16

MAD1:25 pmMadrid Barajas

33h 16m

2 stops

STL3:41 pmLambert-St Louis

$715

United Airlines

Nov 2

STL5:00 amLambert-St Louis

20h 00m

2 stops

MAD8:00 amMadrid Barajas

Feb 2

MAD1:25 pmMadrid Barajas

32h 05m

2 stops

STL2:30 pmLambert-St Louis

$718

United Airlines

Oct 19

STL12:20 pmLambert-St Louis

13h 40m

1 stop

MAD9:00 amMadrid Barajas

Oct 22

MAD1:30 pmMadrid Barajas

29h 43m

2 stops

STL12:13 pmLambert-St Louis

$720

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 11/25

11:51 am-6:00 am

1 stop11h 09m

Madrid Barajas

Wed 2/10

12:40 pm-6:34 pm

1 stop12h 54m

$695

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 10/7

2:40 pm-9:35 am

1 stop11h 55m

Madrid Barajas

Wed 10/21

5:55 am-6:41 pm

2 stops19h 46m

$707

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 10/7

2:40 pm-9:35 am

1 stop11h 55m

Madrid Barajas

Wed 10/21

5:55 am-1:25 pm

1 stop14h 30m

$708

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Mon 11/23

12:05 pm-9:15 am

1 stop14h 10m

Madrid Barajas

Wed 2/17

1:25 pm-12:40 pm

2 stops30h 15m

$715

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Mon 11/2

5:00 am-8:00 am

2 stops20h 00m

Madrid Barajas

Thu 2/4

1:25 pm-2:30 pm

2 stops32h 05m

$718

St. LouisBilbao

STL - BIO

STLBIO

Lambert-St Louis

Tue 10/27

1:08 pm-11:05 pm

2 stops27h 57m

Bilbao

Thu 11/12

6:45 am-9:13 pm

2 stops21h 28m

$734

St. LouisBilbao

STL - BIO

STLBIO

Lambert-St Louis

Sun 10/25

7:04 pm-6:05 pm

2 stops17h 01m

Bilbao

Tue 11/17

5:50 pm-1:45 pm

1 stop26h 55m

$749

St. LouisIbiza

STL - IBZ

STLIBZ

Lambert-St Louis

Wed 8/19

9:35 pm-5:15 pm

1 stop12h 40m

Ibiza

Wed 8/26

11:50 am-7:30 pm

1 stop14h 40m

$918

St. LouisIbiza

STL - IBZ

STLIBZ

Lambert-St Louis

Tue 8/25

9:35 pm-12:55 pm

1 stop32h 20m

Ibiza

Wed 9/2

11:50 am-7:30 pm

1 stop14h 40m

$922

St. LouisSan Sebastian

STL - EAS

STLEAS

Lambert-St Louis

Mon 10/5

1:06 pm-1:00 pm

2 stops16h 54m

San Sebastián

Sat 10/17

9:20 am-9:56 pm

2 stops19h 36m

$924

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 December, then you should wait until March to fly from St. Louis, when ticket prices are also cheap, with an average price of $431.

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 $873 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 $659 on momondo.

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

You could potentially save up to 20% 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 July 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 8,123 reviews	Search Lufthansa flights
Delta	PriceFrom $489	Free Cancellation	Rating 7.8 8,452 reviews	Search Delta flights
British Airways	PriceFrom $516	Free Cancellation	Rating 6.7 8,104 reviews	Search British Airways flights
Iberia	PriceFrom $523	Free Cancellation	Rating 7.0 3,252 reviews	Search Iberia flights
Air Canada	PriceFrom $560	Free Cancellation	Rating 7.1 11,321 reviews	Search Air Canada flights
United Airlines	PriceFrom $560	Free Cancellation	Rating 7.4 9,955 reviews	Search United Airlines flights
American Airlines	PriceFrom $581	Free Cancellation	Rating 7.1 11,790 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.