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

Iberia, United Airlines, and Lufthansa 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 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 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.

$351 Cheap Flights from St. Louis to Spain in 2026

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

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

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.

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

Tue, Sep 29 - Fri, Oct 9

9:35 pm - 5:30 pm

STL

MAD

12h 55m

1 stop

3:55 pm - 11:41 pm

MAD

STL

14h 46m

1 stop

$727British Airways

Tue, Sep 29 - Fri, Oct 9

8:07 pm - 1:30 pm

STL

MAD

10h 23m

1 stop

3:25 pm - 11:41 pm

MAD

STL

15h 16m

1 stop

$731British Airways

Wed, Sep 30 - Wed, Oct 14

3:30 pm - 7:50 pm

STL

MAD

21h 20m

1 stop

1:30 pm - 4:26 pm

MAD

STL

33h 56m

2 stops

$735United Airlines

Tue, Sep 29 - Fri, Oct 9

8:07 pm - 1:30 pm

STL

MAD

10h 23m

1 stop

12:20 pm - 10:00 pm

MAD

STL

16h 40m

1 stop

$736Iberia

Wed, Sep 30 - Wed, Oct 14

5:45 pm - 3:35 pm

STL

MAD

14h 50m

2 stops

12:45 pm - 5:06 pm

MAD

STL

35h 21m

1 stop

$745Multiple Airlines

Tue, Sep 29 - Fri, Oct 9

3:30 pm - 5:10 pm

STL

BIO

18h 40m

1 stop

6:50 am - 11:00 pm

BIO

STL

23h 10m

2 stops

$758Lufthansa

Tue, Aug 11 - Thu, Aug 27

6:55 pm - 11:05 pm

STL

BIO

21h 10m

2 stops

6:50 am - 11:37 pm

BIO

STL

23h 47m

2 stops

$793Lufthansa

Tue, Aug 11 - Thu, Aug 27

8:54 am - 5:00 pm

STL

IBZ

25h 06m

2 stops

9:40 pm - 7:33 pm

IBZ

STL

28h 53m

2 stops

$914Iberia

Wed, Apr 22 - Mon, Apr 27

7:05 am - 11:15 am

STL

SVQ

21h 10m

2 stops

10:15 am - 12:19 am

SVQ

STL

21h 04m

3 stops

$1,895Air Canada

Thu, May 21 - Thu, May 28

United Airlines flights from St. Louis to Spain

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

United Airlines

Sep 29

STL6:40 amLambert-St Louis

18h 25m

2 stops

MAD8:05 amMadrid Barajas

Oct 9

MAD1:30 pmMadrid Barajas

33h 56m

2 stops

STL4:26 pmLambert-St Louis

$725

United Airlines

Sep 29

STL3:30 pmLambert-St Louis

21h 20m

1 stop

MAD7:50 pmMadrid Barajas

Oct 9

MAD1:30 pmMadrid Barajas

33h 56m

2 stops

STL4:26 pmLambert-St Louis

$735

United Airlines

Sep 29

STL6:40 amLambert-St Louis

18h 25m

2 stops

MAD8:05 amMadrid Barajas

Oct 9

MAD1:30 pmMadrid Barajas

33h 56m

2 stops

STL4:26 pmLambert-St Louis

$753

British Airways flights from St. Louis to Spain

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

British Airways

Sep 29

STL9:35 pmLambert-St Louis

12h 55m

1 stop

MAD5:30 pmMadrid Barajas

Oct 9

MAD3:55 pmMadrid Barajas

14h 46m

1 stop

STL11:41 pmLambert-St Louis

$727

British Airways

Sep 30

STL8:07 pmLambert-St Louis

10h 23m

1 stop

MAD1:30 pmMadrid Barajas

Oct 14

MAD3:25 pmMadrid Barajas

15h 16m

1 stop

STL11:41 pmLambert-St Louis

$731

British Airways

Sep 30

STL8:30 amLambert-St Louis

18h 40m

1 stop

BCN10:10 amBarcelona-El Prat

Oct 7

BCN12:50 pmBarcelona-El Prat

17h 51m

1 stop

STL11:41 pmLambert-St Louis

$768

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Tue 9/29

6:40 am-8:05 am

2 stops18h 25m

Madrid Barajas

Fri 10/9

1:30 pm-4:26 pm

2 stops33h 56m

$725

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Tue 9/29

9:35 pm-5:30 pm

1 stop12h 55m

Madrid Barajas

Fri 10/9

3:55 pm-11:41 pm

1 stop14h 46m

$727

Quickest round-trip

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 9/30

8:07 pm-1:30 pm

1 stop10h 23m

Madrid Barajas

Wed 10/14

3:25 pm-11:41 pm

1 stop15h 16m

$731

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Tue 9/29

3:30 pm-7:50 pm

1 stop21h 20m

Madrid Barajas

Fri 10/9

1:30 pm-4:26 pm

2 stops33h 56m

$735

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 9/30

8:07 pm-1:30 pm

1 stop10h 23m

Madrid Barajas

Wed 10/14

12:20 pm-10:00 pm

1 stop16h 40m

$736

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Tue 9/29

5:45 pm-3:35 pm

2 stops14h 50m

Madrid Barajas

Fri 10/9

12:45 pm-5:06 pm

1 stop35h 21m

$745

St. LouisBilbao

STL - BIO

STLBIO

Lambert-St Louis

Tue 8/11

3:30 pm-5:10 pm

1 stop18h 40m

Bilbao

Thu 8/27

6:50 am-11:00 pm

2 stops23h 10m

$758

St. LouisBilbao

STL - BIO

STLBIO

Lambert-St Louis

Tue 8/11

6:55 pm-11:05 pm

2 stops21h 10m

Bilbao

Thu 8/27

6:50 am-11:37 pm

2 stops23h 47m

$793

St. LouisIbiza

STL - IBZ

STLIBZ

Lambert-St Louis

Wed 4/22

8:54 am-5:00 pm

2 stops25h 06m

Ibiza

Mon 4/27

9:40 pm-7:33 pm

2 stops28h 53m

$914

St. LouisSeville

STL - SVQ

STLSVQ

Lambert-St Louis

Thu 5/21

7:05 am-11:15 am

2 stops21h 10m

Sevilla

Thu 5/28

10:15 am-12:19 am

3 stops21h 04m

$1,895

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 $820 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.

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 42m
Direct flights	None

The fastest flight from St. Louis to Spain takes 11h 42m

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 7,901 reviews	Search Lufthansa flights
Delta	PriceFrom $489	Free Cancellation	Rating 7.9 8,394 reviews	Search Delta flights
British Airways	PriceFrom $511	Free Cancellation	Rating 6.7 7,867 reviews	Search British Airways flights
Iberia	PriceFrom $552	Free Cancellation	Rating 7.0 3,175 reviews	Search Iberia flights
United Airlines	PriceFrom $560	Free Cancellation	Rating 7.4 9,560 reviews	Search United Airlines flights
Air Canada	PriceFrom $576	Free Cancellation	Rating 7.1 10,913 reviews	Search Air Canada flights
American Airlines	PriceFrom $582	Free Cancellation	Rating 7.1 11,562 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.