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 32% 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.

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

United Airlines, Aer Lingus, and Delta 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 September 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.

$322 Cheap Flights from St. Louis to Spain in 2026/27

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.

8:55 am - 8:50 amSTL Lambert-St Louis-MAD Madrid Barajas

16h 55m1 stop Toronto Pearson Intl

1:30 pm - 8:20 pmMAD Madrid Barajas-STL Lambert-St Louis

13h 50m1 stop Toronto Pearson Intl

$543Air Canada

Mon, Oct 5 - Wed, Oct 21

12:10 pm - 8:00 amSTL Lambert-St Louis-BCN Barcelona-El Prat

12h 50m1 stop Montreal Pierre Elliott Trudeau Intl

1:15 pm - 2:00 pmBCN Barcelona-El Prat-STL Lambert-St Louis

31h 45m1 stop Toronto Pearson Intl

$544Air Canada

Mon, Oct 12 - Wed, Oct 21

8:55 am - 8:00 amSTL Lambert-St Louis-BCN Barcelona-El Prat

16h 05m2 stops Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl

3:15 pm - 9:21 pmBCN Barcelona-El Prat-STL Lambert-St Louis

13h 06m1 stop Chicago O'Hare Intl

$552Multiple Airlines

Mon, Oct 5 - Wed, Oct 21

12:10 pm - 8:00 amSTL Lambert-St Louis-BCN Barcelona-El Prat

12h 50m1 stop Montreal Pierre Elliott Trudeau Intl

1:15 pm - 8:20 pmBCN Barcelona-El Prat-STL Lambert-St Louis

14h 05m1 stop Toronto Pearson Intl

$553Multiple Airlines

Mon, Oct 12 - Wed, Oct 21

1:08 pm - 1:15 pmSTL Lambert-St Louis-BCN Barcelona-El Prat

17h 07m1 stop Chicago O'Hare Intl

1:35 pm - 9:40 pmBCN Barcelona-El Prat-STL Lambert-St Louis

39h 05m2 stops Montreal Pierre Elliott Trudeau Intl Chicago O'Hare Intl

$555United Airlines

Wed, Nov 4 - Wed, Nov 11

6:00 am - 1:15 pmSTL Lambert-St Louis-BCN Barcelona-El Prat

24h 15m1 stop Chicago O'Hare Intl

1:15 pm - 2:00 pmBCN Barcelona-El Prat-STL Lambert-St Louis

31h 45m1 stop Toronto Pearson Intl

$561United Airlines

Mon, Oct 12 - Wed, Oct 21

1:15 pm - 9:10 amSTL Lambert-St Louis-BCN Barcelona-El Prat

12h 55m1 stop Philadelphia

12:00 pm - 10:58 pmBCN Barcelona-El Prat-STL Lambert-St Louis

17h 58m1 stop Philadelphia

$563British Airways

Wed, Feb 3 - Fri, Feb 12

10:05 am - 8:35 amSTL Lambert-St Louis-BCN Barcelona-El Prat

15h 30m2 stops Atlanta Hartsfield-Jackson Boston Logan Intl

10:55 am - 9:09 amBCN Barcelona-El Prat-STL Lambert-St Louis

29h 14m2 stops New York John F Kennedy Intl Atlanta Hartsfield-Jackson

$565Delta

Mon, Oct 5 - Wed, Oct 21

6:40 am - 6:20 amSTL Lambert-St Louis-MAD Madrid Barajas

16h 40m2 stops Detroit Metropolitan Wayne County Boston Logan Intl

12:45 pm - 10:51 amMAD Madrid Barajas-STL Lambert-St Louis

29h 06m2 stops New York John F Kennedy Intl Atlanta Hartsfield-Jackson

$569Delta

Mon, Oct 5 - Wed, Oct 21

5:29 pm - 6:30 pmSTL Lambert-St Louis-BCN Barcelona-El Prat

18h 01m2 stops Chicago O'Hare Intl London Heathrow

12:00 pm - 8:26 pmBCN Barcelona-El Prat-STL Lambert-St Louis

15h 26m1 stop Philadelphia

$572British Airways

Wed, Nov 4 - Thu, Nov 12

Cheap last minute flights

Enter your travel dates to find the best prices.

12:10 pm - 8:00 amSTL Lambert-St Louis-BCN Barcelona-El Prat

12h 50m1 stop Montreal Pierre Elliott Trudeau Intl

12:15 pm - 9:09 pmBCN Barcelona-El Prat-STL Lambert-St Louis

39h 54m2 stops Montreal Pierre Elliott Trudeau Intl Newark

$604United Airlines

Thu, Sep 24 - Tue, Sep 29

7:30 am - 8:00 amSTL Lambert-St Louis-BCN Barcelona-El Prat

17h 30m2 stops Newark Montreal Pierre Elliott Trudeau Intl

12:15 pm - 4:00 pmBCN Barcelona-El Prat-STL Lambert-St Louis

34h 45m2 stops Montreal Pierre Elliott Trudeau Intl Newark

$608United Airlines

Thu, Sep 24 - Tue, Sep 29

8:55 am - 9:20 amSTL Lambert-St Louis-BCN Barcelona-El Prat

17h 25m1 stop Toronto Pearson Intl

12:15 pm - 12:13 pmBCN Barcelona-El Prat-STL Lambert-St Louis

30h 58m2 stops Montreal Pierre Elliott Trudeau Intl Chicago O'Hare Intl

$609Air Canada

Thu, Sep 24 - Tue, Sep 29

2:40 pm - 9:20 amSTL Lambert-St Louis-BCN Barcelona-El Prat

11h 40m1 stop Toronto Pearson Intl

1:15 pm - 8:20 pmBCN Barcelona-El Prat-STL Lambert-St Louis

14h 05m1 stop Toronto Pearson Intl

$609Multiple Airlines

Thu, Sep 24 - Tue, Sep 29

8:55 am - 9:20 amSTL Lambert-St Louis-BCN Barcelona-El Prat

17h 25m1 stop Toronto Pearson Intl

1:15 pm - 8:20 pmBCN Barcelona-El Prat-STL Lambert-St Louis

14h 05m1 stop Toronto Pearson Intl

$610Multiple Airlines

Thu, Sep 24 - Tue, Sep 29

12:10 pm - 8:00 amSTL Lambert-St Louis-BCN Barcelona-El Prat

12h 50m1 stop Montreal Pierre Elliott Trudeau Intl

1:15 pm - 2:00 pmBCN Barcelona-El Prat-STL Lambert-St Louis

31h 45m1 stop Toronto Pearson Intl

$622Air Canada

Thu, Sep 24 - Tue, Sep 29

12:46 pm - 10:10 amSTL Lambert-St Louis-BCN Barcelona-El Prat

14h 24m1 stop Dallas/Fort Worth

9:30 pm - 8:20 amBCN Barcelona-El Prat-STL Lambert-St Louis

41h 50m2 stops Madrid Barajas Boston Logan Intl

$648Iberia

Tue, Sep 22 - Sun, Sep 27

7:27 am - 10:55 amSTL Lambert-St Louis-BCN Barcelona-El Prat

20h 28m1 stop Chicago O'Hare Intl

10:30 am - 8:44 pmBCN Barcelona-El Prat-STL Lambert-St Louis

17h 14m1 stop Chicago O'Hare Intl

$654British Airways

Tue, Sep 22 - Sun, Sep 27

11:01 am - 1:30 pmSTL Lambert-St Louis-MAD Madrid Barajas

19h 29m1 stop Chicago O'Hare Intl

5:30 pm - 8:20 amMAD Madrid Barajas-STL Lambert-St Louis

21h 50m1 stop Boston Logan Intl

$680Iberia

Thu, Sep 24 - Sat, Oct 3

9:40 pm - 6:25 pmSTL Lambert-St Louis-BCN Barcelona-El Prat

13h 45m1 stop London Heathrow

10:30 am - 12:27 amBCN Barcelona-El Prat-STL Lambert-St Louis

20h 57m1 stop Chicago O'Hare Intl

$985British Airways

Sun, Sep 20 - Sun, Sep 27

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United Airlines flights from St. Louis to Spain

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

United Airlines

Nov 4

STL1:08 pmLambert-St Louis

17h 07m

1 stop

BCN1:15 pmBarcelona-El Prat

Nov 11

BCN1:35 pmBarcelona-El Prat

39h 05m

2 stops

STL9:40 pmLambert-St Louis

$555

United Airlines

Oct 12

STL6:00 amLambert-St Louis

24h 15m

1 stop

BCN1:15 pmBarcelona-El Prat

Oct 21

BCN1:15 pmBarcelona-El Prat

31h 45m

1 stop

STL2:00 pmLambert-St Louis

$561

United Airlines

Oct 5

STL8:30 amLambert-St Louis

16h 35m

1 stop

MAD8:05 amMadrid Barajas

Oct 21

MAD1:30 pmMadrid Barajas

29h 43m

2 stops

STL12:13 pmLambert-St Louis

$565

American Airlines flights from St. Louis to Spain

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

American Airlines

Nov 4

STL1:15 pmLambert-St Louis

15h 05m

2 stops

BCN11:20 amBarcelona-El Prat

Nov 11

BCN11:00 amBarcelona-El Prat

17h 47m

1 stop

STL9:47 pmLambert-St Louis

$573

American Airlines

Nov 4

STL12:58 pmLambert-St Louis

12h 52m

1 stop

BCN8:50 amBarcelona-El Prat

Nov 11

BCN11:00 amBarcelona-El Prat

17h 47m

1 stop

STL9:47 pmLambert-St Louis

$575

American Airlines

Sep 28

STL6:30 amLambert-St Louis

16h 05m

1 stop

MAD5:35 amMadrid Barajas

Oct 9

MAD12:40 pmMadrid Barajas

18h 19m

1 stop

STL11:59 pmLambert-St Louis

$663

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisMadrid

STL Lambert-St Louis - MAD Madrid Barajas

STLMAD

Lambert-St Louis

Mon 10/5

8:55 am-8:50 am

1 stop16h 55m

Madrid Barajas

Wed 10/21

1:30 pm-8:20 pm

1 stop13h 50m

$543

St. LouisBarcelona

STL Lambert-St Louis - BCN Barcelona-El Prat

STLBCN

Lambert-St Louis

Mon 10/12

12:10 pm-8:00 am

1 stop12h 50m

Barcelona-El Prat

Wed 10/21

1:15 pm-2:00 pm

1 stop31h 45m

$544

St. LouisBarcelona

STL Lambert-St Louis - BCN Barcelona-El Prat

STLBCN

Lambert-St Louis

Mon 10/5

8:55 am-8:00 am

2 stops16h 05m

Barcelona-El Prat

Wed 10/21

3:15 pm-9:21 pm

1 stop13h 06m

$552

Quickest round-trip

St. LouisBarcelona

STL Lambert-St Louis - BCN Barcelona-El Prat

STLBCN

Lambert-St Louis

Mon 10/12

12:10 pm-8:00 am

1 stop12h 50m

Barcelona-El Prat

Wed 10/21

1:15 pm-8:20 pm

1 stop14h 05m

$553

St. LouisBarcelona

STL Lambert-St Louis - BCN Barcelona-El Prat

STLBCN

Lambert-St Louis

Wed 11/4

1:08 pm-1:15 pm

1 stop17h 07m

Barcelona-El Prat

Wed 11/11

1:35 pm-9:40 pm

2 stops39h 05m

$555

St. LouisBarcelona

STL Lambert-St Louis - BCN Barcelona-El Prat

STLBCN

Lambert-St Louis

Mon 10/12

6:00 am-1:15 pm

1 stop24h 15m

Barcelona-El Prat

Wed 10/21

1:15 pm-2:00 pm

1 stop31h 45m

$561

St. LouisBarcelona

STL Lambert-St Louis - BCN Barcelona-El Prat

STLBCN

Lambert-St Louis

Wed 2/3

1:15 pm-9:10 am

1 stop12h 55m

Barcelona-El Prat

Fri 2/12

12:00 pm-10:58 pm

1 stop17h 58m

$563

St. LouisBarcelona

STL Lambert-St Louis - BCN Barcelona-El Prat

STLBCN

Lambert-St Louis

Mon 10/5

10:05 am-8:35 am

2 stops15h 30m

Barcelona-El Prat

Wed 10/21

10:55 am-9:09 am

2 stops29h 14m

$565

St. LouisMadrid

STL Lambert-St Louis - MAD Madrid Barajas

STLMAD

Lambert-St Louis

Mon 10/5

6:40 am-6:20 am

2 stops16h 40m

Madrid Barajas

Wed 10/21

12:45 pm-10:51 am

2 stops29h 06m

$569

St. LouisBarcelona

STL Lambert-St Louis - BCN Barcelona-El Prat

STLBCN

Lambert-St Louis

Wed 11/4

5:29 pm-6:30 pm

2 stops18h 01m

Barcelona-El Prat

Thu 11/12

12:00 pm-8:26 pm

1 stop15h 26m

$572

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 February, then you should wait until April to fly from St. Louis, when ticket prices are also cheap, with an average price of $690.

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 $944 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 $639 on momondo.

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

You could potentially save up to 19% 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

Best Price Found	$322
Fastest flight time	11h 25m
Direct flights	None

The best one-way flight to Spain from St. Louis in the past 72 hours is $322. The best round-trip flight deal from St. Louis to Spain found on momondo in the last 72 hours is $543.

The fastest flight from St. Louis to Spain takes 11h 25m

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 September 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 8,231 reviews	Search Lufthansa flights
Delta	PriceFrom $489	Free Cancellation	Rating 7.8 8,585 reviews	Search Delta flights
British Airways	PriceFrom $516	Free Cancellation	Rating 6.7 8,229 reviews	Search British Airways flights
Iberia	PriceFrom $523	Free Cancellation	Rating 7.0 3,249 reviews	Search Iberia flights
United Airlines	PriceFrom $560	Free Cancellation	Rating 7.4 10,224 reviews	Search United Airlines flights
American Airlines	PriceFrom $582	Free Cancellation	Rating 7.1 12,078 reviews	Search American Airlines flights
Air Canada	PriceFrom $648	Free Cancellation	Rating 7.1 11,649 reviews	Search Air Canada 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.