What airlines fly to Spain?

United Airlines, American Airlines and Iberia 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 31% of people opting to fly with this airline when traveling to Spain. Keep in mind that there are 8 different airlines that fly to Spain on a routine basis, so you have a few additional options to choose from.

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

Aer Lingus, American Airlines, and British Airways are the most popular carriers operating from Lambert-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 March 2026, there are 8 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.

$365 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.

7:46 pm - 9:05 am

STL

MAD

30h 19m

1 stop

1:35 pm - 8:03 pm

MAD

STL

13h 28m

1 stop

$567British Airways

Sat, Aug 15 - Sat, Sep 12

1:29 pm - 9:35 am

STL

MAD

13h 06m

1 stop

12:10 pm - 7:30 pm

MAD

STL

14h 20m

1 stop

$573British Airways

Wed, Apr 22 - Wed, Apr 29

9:10 am - 1:15 pm

STL

BCN

21h 05m

1 stop

12:15 pm - 9:52 pm

BCN

STL

40h 37m

2 stops

$584United Airlines

Tue, Apr 14 - Tue, Apr 28

4:05 pm - 8:00 am

STL

BCN

32h 55m

2 stops

1:15 pm - 3:25 pm

BCN

STL

33h 10m

1 stop

$586Air Canada

Tue, Apr 14 - Tue, Apr 21

6:30 am - 8:20 am

STL

BCN

18h 50m

2 stops

12:15 pm - 9:13 pm

BCN

STL

39h 58m

2 stops

$588United Airlines

Tue, Apr 14 - Tue, Apr 28

1:37 pm - 12:45 pm

STL

BIO

16h 08m

2 stops

9:15 am - 8:19 pm

BIO

STL

18h 04m

2 stops

$602American Airlines

Tue, Aug 11 - Thu, Aug 27

2:32 pm - 12:50 pm

STL

OVD

15h 18m

2 stops

9:20 am - 10:19 pm

OVD

STL

19h 59m

2 stops

$652Iberia

Tue, Apr 14 - Tue, Apr 21

12:25 pm - 2:25 pm

STL

LEI

19h 00m

2 stops

7:10 am - 10:59 pm

LEI

STL

22h 49m

2 stops

$700Iberia

Tue, Apr 14 - Tue, Apr 21

9:15 am - 8:40 am

STL

OVD

17h 25m

2 stops

6:40 am - 7:33 pm

OVD

STL

19h 53m

2 stops

$726American Airlines

Mon, Mar 23 - Wed, Apr 15

9:10 am - 1:15 pm

STL

BIO

21h 05m

3 stops

6:50 am - 9:13 pm

BIO

STL

21h 23m

3 stops

$1,092Air Canada

Wed, Apr 15 - Wed, Apr 22

American Airlines flights from St. Louis to Spain

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

American Airlines

Aug 11

STL1:37 pmLambert-St Louis

16h 08m

2 stops

BIO12:45 pmBilbao

Aug 27

BIO9:15 amBilbao

18h 04m

2 stops

STL8:19 pmLambert-St Louis

$602

American Airlines

Apr 12

STL8:03 pmLambert-St Louis

10h 27m

1 stop

MAD1:30 pmMadrid Barajas

Apr 20

MAD12:20 pmMadrid Barajas

17h 04m

1 stop

STL10:24 pmLambert-St Louis

$626

American Airlines

Apr 13

STL5:49 pmLambert-St Louis

11h 21m

1 stop

BCN12:10 pmBarcelona-El Prat

Apr 27

BCN10:30 amBarcelona-El Prat

20h 16m

1 stop

STL11:46 pmLambert-St Louis

$634

KLM flights from St. Louis to Spain

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

KLM

Apr 13

STL10:50 amLambert-St Louis

15h 40m

2 stops

MAD9:30 amMadrid Barajas

Apr 20

MAD12:45 pmMadrid Barajas

15h 34m

1 stop

STL9:19 pmLambert-St Louis

$643

KLM

Apr 14

STL6:50 pmLambert-St Louis

18h 05m

2 stops

SVQ7:55 pmSevilla

Apr 21

SVQ9:25 pmSevilla

24h 04m

2 stops

STL2:29 pmLambert-St Louis

$683

KLM

Mar 3

STL6:00 amLambert-St Louis

20h 15m

1 stop

MAD9:15 amMadrid Barajas

Mar 9

MAD10:05 amMadrid Barajas

19h 53m

1 stop

STL11:58 pmLambert-St Louis

$732

Fly from

Fly to

Route

Depart

Return

Price

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Sat 8/15

7:46 pm-9:05 am

1 stop30h 19m

Madrid Barajas

Sat 9/12

1:35 pm-8:03 pm

1 stop13h 28m

$567

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 4/22

1:29 pm-9:35 am

1 stop13h 06m

Madrid Barajas

Wed 4/29

12:10 pm-7:30 pm

1 stop14h 20m

$573

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Tue 4/14

9:10 am-1:15 pm

1 stop21h 05m

Barcelona-El Prat

Tue 4/28

12:15 pm-9:52 pm

2 stops40h 37m

$584

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Tue 4/14

4:05 pm-8:00 am

2 stops32h 55m

Barcelona-El Prat

Tue 4/21

1:15 pm-3:25 pm

1 stop33h 10m

$586

St. LouisBarcelona

STL - BCN

STLBCN

Lambert-St Louis

Tue 4/14

6:30 am-8:20 am

2 stops18h 50m

Barcelona-El Prat

Tue 4/28

12:15 pm-9:13 pm

2 stops39h 58m

$588

St. LouisBilbao

STL - BIO

STLBIO

Lambert-St Louis

Tue 8/11

1:37 pm-12:45 pm

2 stops16h 08m

Bilbao

Thu 8/27

9:15 am-8:19 pm

2 stops18h 04m

$602

St. LouisOviedo

STL - OVD

STLOVD

Lambert-St Louis

Tue 4/14

2:32 pm-12:50 pm

2 stops15h 18m

Oviedo Asturias

Tue 4/21

9:20 am-10:19 pm

2 stops19h 59m

$652

St. LouisAlmería

STL - LEI

STLLEI

Lambert-St Louis

Tue 4/14

12:25 pm-2:25 pm

2 stops19h 00m

Almeria

Tue 4/21

7:10 am-10:59 pm

2 stops22h 49m

$700

St. LouisOviedo

STL - OVD

STLOVD

Lambert-St Louis

Mon 3/23

9:15 am-8:40 am

2 stops17h 25m

Oviedo Asturias

Wed 4/15

6:40 am-7:33 pm

2 stops19h 53m

$726

St. LouisBilbao

STL - BIO

STLBIO

Lambert-St Louis

Wed 4/15

9:10 am-1:15 pm

3 stops21h 05m

Bilbao

Wed 4/22

6:50 am-9:13 pm

3 stops21h 23m

$1,092

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 November to fly from St. Louis, when ticket prices are also cheap, with an average price of $666.

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 $852 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 $628 on momondo.

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

You could potentially save up to 16% 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	10h 50m
Direct flights	None

The fastest flight from St. Louis to Spain takes 10h 50m

There are no direct flights from St. Louis to Spain. There are no popular flight routes from St. Louis to Spain.

Search flight deals

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 March 2026, there are 8 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 7,818 reviews	Search Lufthansa flights
British Airways	PriceFrom $516	Free Cancellation	Rating 6.7 7,772 reviews	Search British Airways flights
Delta	PriceFrom $552	Free Cancellation	Rating 7.9 8,244 reviews	Search Delta flights
United Airlines	PriceFrom $567	Free Cancellation	Rating 7.4 9,370 reviews	Search United Airlines flights
Iberia	PriceFrom $568	Free Cancellation	Rating 7.0 3,127 reviews	Search Iberia flights
American Airlines	PriceFrom $582	Free Cancellation	Rating 7.1 11,370 reviews	Search American Airlines flights
Air Canada	PriceFrom $593	Free Cancellation	Rating 7.1 10,760 reviews	Search Air Canada flights
KLM	PriceFrom $634	Free Cancellation	Rating 7.7 1,461 reviews	Search KLM 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.