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

Virgin Atlantic, 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 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.

$299 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.

11:00 am - 12:15 pm

STL

MAD

18h 15m

1 stop

9:50 am - 11:42 pm

MAD

STL

20h 52m

1 stop

$442Virgin Atlantic

Mon, Sep 7 - Tue, Sep 15

5:23 pm - 12:15 pm

STL

MAD

11h 52m

1 stop

12:45 pm - 11:16 pm

MAD

STL

17h 31m

2 stops

$445Virgin Atlantic

Mon, Sep 7 - Fri, Sep 18

7:30 am - 9:00 am

STL

MAD

18h 30m

1 stop

12:45 pm - 3:43 pm

MAD

STL

33h 58m

2 stops

$715United Airlines

Wed, Oct 7 - Wed, Oct 21

7:01 pm - 6:50 am

STL

MAD

28h 49m

2 stops

12:45 pm - 3:43 pm

MAD

STL

33h 58m

2 stops

$718United Airlines

Mon, Sep 28 - Fri, Oct 9

9:40 pm - 5:35 pm

STL

IBZ

12h 55m

1 stop

9:05 am - 11:42 pm

IBZ

STL

21h 37m

2 stops

$839British Airways

Sun, Aug 16 - Tue, Aug 25

9:40 pm - 5:35 pm

STL

IBZ

12h 55m

1 stop

9:05 am - 11:42 pm

IBZ

STL

21h 37m

2 stops

$842British Airways

Sun, Aug 16 - Tue, Aug 25

4:54 pm - 4:50 pm

STL

IBZ

16h 56m

2 stops

8:05 am - 7:28 pm

IBZ

STL

18h 23m

2 stops

$952American Airlines

Mon, Aug 24 - Sun, Aug 30

9:44 am - 9:25 pm

STL

PNA

28h 41m

2 stops

1:55 pm - 7:51 pm

PNA

STL

36h 56m

2 stops

$958Iberia

Wed, Aug 12 - Wed, Aug 19

5:42 pm - 5:15 pm

STL

IBZ

16h 33m

2 stops

1:25 pm - 11:42 pm

IBZ

STL

17h 17m

2 stops

$983American Airlines

Wed, Aug 5 - Wed, Aug 12

1:49 pm - 5:50 pm

STL

TFN

22h 01m

2 stops

9:10 pm - 6:04 pm

TFN

STL

26h 54m

2 stops

$993Iberia

Thu, Oct 1 - Mon, Oct 5

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

United Airlines flights from St. Louis to Spain

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

United Airlines

Oct 7

STL7:30 amLambert-St Louis

18h 30m

1 stop

MAD9:00 amMadrid Barajas

Oct 21

MAD12:45 pmMadrid Barajas

33h 58m

2 stops

STL3:43 pmLambert-St Louis

$715

United Airlines

Sep 28

STL2:40 pmLambert-St Louis

11h 10m

1 stop

MAD8:50 amMadrid Barajas

Oct 9

MAD12:45 pmMadrid Barajas

33h 58m

2 stops

STL3:43 pmLambert-St Louis

$718

United Airlines

Sep 28

STL4:50 pmLambert-St Louis

33h 10m

1 stop

MAD9:00 amMadrid Barajas

Oct 9

MAD1:30 pmMadrid Barajas

31h 30m

1 stop

STL2:00 pmLambert-St Louis

$721

British Airways flights from St. Louis to Spain

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

British Airways

Oct 6

STL9:35 pmLambert-St Louis

15h 30m

1 stop

MAD8:05 pmMadrid Barajas

Oct 13

MAD1:35 pmMadrid Barajas

16h 50m

1 stop

STL11:25 pmLambert-St Louis

$727

British Airways

Dec 13

STL4:49 pmLambert-St Louis

18h 41m

2 stops

MAD6:30 pmMadrid Barajas

Dec 18

MAD12:00 pmMadrid Barajas

27h 34m

1 stop

STL8:34 amLambert-St Louis

$765

British Airways

Dec 13

STL10:47 amLambert-St Louis

15h 08m

1 stop

MAD8:55 amMadrid Barajas

Dec 18

MAD12:00 pmMadrid Barajas

27h 34m

1 stop

STL8:34 amLambert-St Louis

$779

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Mon 9/7

11:00 am-12:15 pm

1 stop18h 15m

Madrid Barajas

Tue 9/15

9:50 am-11:42 pm

1 stop20h 52m

$442

Quickest round-trip

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Mon 9/7

5:23 pm-12:15 pm

1 stop11h 52m

Madrid Barajas

Fri 9/18

12:45 pm-11:16 pm

2 stops17h 31m

$445

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 10/7

7:30 am-9:00 am

1 stop18h 30m

Madrid Barajas

Wed 10/21

12:45 pm-3:43 pm

2 stops33h 58m

$715

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Mon 9/28

7:01 pm-6:50 am

2 stops28h 49m

Madrid Barajas

Fri 10/9

12:45 pm-3:43 pm

2 stops33h 58m

$718

St. LouisIbiza

STL - IBZ

STLIBZ

Lambert-St Louis

Sun 8/16

9:40 pm-5:35 pm

1 stop12h 55m

Ibiza

Tue 8/25

9:05 am-11:42 pm

2 stops21h 37m

$839

St. LouisIbiza

STL - IBZ

STLIBZ

Lambert-St Louis

Sun 8/16

9:40 pm-5:35 pm

1 stop12h 55m

Ibiza

Tue 8/25

9:05 am-11:42 pm

2 stops21h 37m

$842

St. LouisIbiza

STL - IBZ

STLIBZ

Lambert-St Louis

Mon 8/24

4:54 pm-4:50 pm

2 stops16h 56m

Ibiza

Sun 8/30

8:05 am-7:28 pm

2 stops18h 23m

$952

St. LouisPamplona

STL - PNA

STLPNA

Lambert-St Louis

Wed 8/12

9:44 am-9:25 pm

2 stops28h 41m

Pamplona

Wed 8/19

1:55 pm-7:51 pm

2 stops36h 56m

$958

St. LouisIbiza

STL - IBZ

STLIBZ

Lambert-St Louis

Wed 8/5

5:42 pm-5:15 pm

2 stops16h 33m

Ibiza

Wed 8/12

1:25 pm-11:42 pm

2 stops17h 17m

$983

St. LouisSanta Cruz de Tenerife

STL - TFN

STLTFN

Lambert-St Louis

Thu 10/1

1:49 pm-5:50 pm

2 stops22h 01m

Santa Cruz de Tenerife Tenerife-Norte

Mon 10/5

9:10 pm-6:04 pm

2 stops26h 54m

$993

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 $869 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 27% 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 21m
Direct flights	None

The fastest flight from St. Louis to Spain takes 11h 21m

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 8,104 reviews	Search Lufthansa flights
Delta	PriceFrom $489	Free Cancellation	Rating 7.8 8,454 reviews	Search Delta flights
British Airways	PriceFrom $516	Free Cancellation	Rating 6.7 8,077 reviews	Search British Airways flights
Iberia	PriceFrom $523	Free Cancellation	Rating 7.0 3,250 reviews	Search Iberia flights
Air Canada	PriceFrom $560	Free Cancellation	Rating 7.1 11,269 reviews	Search Air Canada flights
United Airlines	PriceFrom $567	Free Cancellation	Rating 7.4 9,899 reviews	Search United Airlines flights
American Airlines	PriceFrom $581	Free Cancellation	Rating 7.1 11,774 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.