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

British Airways, Iberia, and Lufthansa 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 34% 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 June 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.

$314 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.

9:35 pm - 8:05 pm

STL

MAD

15h 30m

1 stop

10:35 am - 7:30 pm

MAD

STL

15h 55m

1 stop

$719British Airways

Wed, Oct 7 - Wed, Oct 21

9:35 pm - 8:05 pm

STL

MAD

15h 30m

1 stop

1:15 pm - 11:41 pm

MAD

STL

16h 26m

1 stop

$720British Airways

Wed, Oct 21 - Fri, Oct 30

9:35 pm - 8:05 pm

STL

MAD

15h 30m

1 stop

1:15 pm - 11:41 pm

MAD

STL

16h 26m

1 stop

$721British Airways

Wed, Oct 21 - Fri, Oct 30

3:30 pm - 1:20 pm

STL

BIO

14h 50m

1 stop

6:45 am - 1:25 pm

BIO

STL

13h 40m

1 stop

$732Lufthansa

Mon, Oct 5 - Fri, Oct 16

8:00 am - 5:55 pm

STL

BIO

26h 55m

2 stops

6:45 am - 1:25 pm

BIO

STL

13h 40m

1 stop

$736United Airlines

Mon, Oct 5 - Fri, Oct 16

5:36 pm - 5:55 pm

STL

BIO

17h 19m

2 stops

6:45 am - 8:00 pm

BIO

STL

20h 15m

2 stops

$744United Airlines

Mon, Oct 5 - Fri, Oct 16

10:14 am - 11:00 am

STL

BCN

17h 46m

2 stops

12:50 pm - 9:55 pm

BCN

STL

16h 05m

1 stop

$769Iberia

Wed, Sep 23 - Wed, Sep 30

9:40 pm - 5:05 pm

STL

BCN

12h 25m

1 stop

9:15 pm - 2:45 pm

BCN

STL

23h 30m

2 stops

$773Iberia

Sun, Oct 18 - Wed, Oct 28

5:42 pm - 4:50 pm

STL

IBZ

16h 08m

2 stops

8:05 am - 7:28 pm

IBZ

STL

18h 23m

2 stops

$953American Airlines

Mon, Aug 24 - Sun, Aug 30

3:30 pm - 11:50 am

STL

IBZ

13h 20m

1 stop

12:50 pm - 1:25 pm

IBZ

STL

31h 35m

1 stop

$996Lufthansa

Mon, Jul 27 - Mon, Aug 3

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

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

15h 30m

1 stop

MAD8:05 pmMadrid Barajas

Oct 21

MAD12:10 pmMadrid Barajas

14h 20m

1 stop

STL7:30 pmLambert-St Louis

$719

British Airways

Sep 27

STL9:40 pmLambert-St Louis

29h 00m

1 stop

MAD9:40 amMadrid Barajas

Oct 13

MAD3:25 pmMadrid Barajas

15h 16m

1 stop

STL11:41 pmLambert-St Louis

$720

British Airways

Oct 21

STL9:35 pmLambert-St Louis

15h 30m

1 stop

MAD8:05 pmMadrid Barajas

Oct 30

MAD1:15 pmMadrid Barajas

16h 26m

1 stop

STL11:41 pmLambert-St Louis

$721

Air Canada flights from St. Louis to Spain

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

Air Canada

Oct 7

STL2:40 pmLambert-St Louis

11h 55m

1 stop

MAD9:35 amMadrid Barajas

Oct 21

MAD12:45 pmMadrid Barajas

39h 36m

2 stops

STL9:21 pmLambert-St Louis

$749

Air Canada

Dec 6

STL4:15 pmLambert-St Louis

36h 40m

2 stops

VLC11:55 amValencia

Dec 10

VLC1:00 pmValencia

33h 30m

2 stops

STL3:30 pmLambert-St Louis

$750

Air Canada

Sep 20

STL12:10 pmLambert-St Louis

11h 40m

1 stop

MAD6:50 amMadrid Barajas

Oct 2

MAD12:45 pmMadrid Barajas

12h 56m

1 stop

STL6:41 pmLambert-St Louis

$758

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-8:05 pm

1 stop15h 30m

Madrid Barajas

Wed 10/21

10:35 am-7:30 pm

1 stop15h 55m

$719

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

1:15 pm-11:41 pm

1 stop16h 26m

$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

1:15 pm-11:41 pm

1 stop16h 26m

$721

Quickest round-trip

St. LouisBilbao

STL - BIO

STLBIO

Lambert-St Louis

Mon 10/5

3:30 pm-1:20 pm

1 stop14h 50m

Bilbao

Fri 10/16

6:45 am-1:25 pm

1 stop13h 40m

$732

St. LouisBilbao

STL - BIO

STLBIO

Lambert-St Louis

Mon 10/5

8:00 am-5:55 pm

2 stops26h 55m

Bilbao

Fri 10/16

6:45 am-1:25 pm

1 stop13h 40m

$736

St. LouisBilbao

STL - BIO

STLBIO

Lambert-St Louis

Mon 10/5

5:36 pm-5:55 pm

2 stops17h 19m

Bilbao

Fri 10/16

6:45 am-8:00 pm

2 stops20h 15m

$744

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Wed 9/23

10:14 am-11:00 am

2 stops17h 46m

Barcelona-El Prat

Wed 9/30

12:50 pm-9:55 pm

1 stop16h 05m

$769

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Sun 10/18

9:40 pm-5:05 pm

1 stop12h 25m

Barcelona-El Prat

Wed 10/28

9:15 pm-2:45 pm

2 stops23h 30m

$773

St. LouisIbiza

STL - IBZ

STLIBZ

Lambert-St Louis

Mon 8/24

5:42 pm-4:50 pm

2 stops16h 08m

Ibiza

Sun 8/30

8:05 am-7:28 pm

2 stops18h 23m

$953

St. LouisIbiza

STL - IBZ

STLIBZ

Lambert-St Louis

Mon 7/27

3:30 pm-11:50 am

1 stop13h 20m

Ibiza

Mon 8/3

12:50 pm-1:25 pm

1 stop31h 35m

$996

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 $851 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 $557 on momondo.

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

You could potentially save up to 40% 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 03m
Direct flights	None

The fastest flight from St. Louis to Spain takes 11h 03m

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 June 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 8,066 reviews	Search Lufthansa flights
Delta	PriceFrom $489	Free Cancellation	Rating 7.9 8,403 reviews	Search Delta flights
British Airways	PriceFrom $516	Free Cancellation	Rating 6.7 8,051 reviews	Search British Airways flights
Iberia	PriceFrom $523	Free Cancellation	Rating 7.0 3,237 reviews	Search Iberia flights
Air Canada	PriceFrom $560	Free Cancellation	Rating 7.1 11,197 reviews	Search Air Canada flights
United Airlines	PriceFrom $567	Free Cancellation	Rating 7.4 9,841 reviews	Search United Airlines flights
American Airlines	PriceFrom $581	Free Cancellation	Rating 7.1 11,662 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.