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

Lufthansa, United Airlines, and Aer Lingus 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 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.

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 October 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.

$341 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.

8:30 am - 1:15 pmSTL Lambert-St Louis-BCN Barcelona-El Prat

21h 45m1 stop Chicago O'Hare Intl

1:35 pm - 4:17 pmBCN Barcelona-El Prat-STL Lambert-St Louis

33h 42m2 stops Montreal Pierre Elliott Trudeau Intl Newark

$705United Airlines

Wed, Nov 4 - Wed, Nov 11

4:05 pm - 8:00 amSTL Lambert-St Louis-MAD Madrid Barajas

32h 55m2 stops Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl

6:05 am - 1:45 pmMAD Madrid Barajas-STL Lambert-St Louis

14h 40m1 stop Frankfurt am Main

$707Multiple Airlines

Mon, Nov 2 - Wed, Nov 18

9:40 am - 9:35 amSTL Lambert-St Louis-BCN Barcelona-El Prat

16h 55m2 stops Chicago O'Hare Intl Montreal Pierre Elliott Trudeau Intl

1:35 pm - 4:17 pmBCN Barcelona-El Prat-STL Lambert-St Louis

33h 42m2 stops Montreal Pierre Elliott Trudeau Intl Newark

$709United Airlines

Wed, Nov 4 - Wed, Nov 11

11:29 am - 9:30 amSTL Lambert-St Louis-MAD Madrid Barajas

15h 01m1 stop Newark

6:05 am - 1:45 pmMAD Madrid Barajas-STL Lambert-St Louis

14h 40m1 stop Frankfurt am Main

$711Lufthansa

Mon, Nov 2 - Wed, Nov 18

4:05 pm - 8:00 amSTL Lambert-St Louis-MAD Madrid Barajas

32h 55m2 stops Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl

1:25 pm - 2:34 pmMAD Madrid Barajas-STL Lambert-St Louis

32h 09m2 stops Montreal Pierre Elliott Trudeau Intl Chicago O'Hare Intl

$713Air Canada

Mon, Nov 2 - Wed, Nov 18

9:59 am - 9:00 amSTL Lambert-St Louis-BCN Barcelona-El Prat

16h 01m2 stops Newark Washington, D.C. Dulles Intl

6:50 am - 1:45 pmBCN Barcelona-El Prat-STL Lambert-St Louis

13h 55m1 stop Frankfurt am Main

$713Multiple Airlines

Mon, Nov 2 - Wed, Nov 18

1:08 pm - 5:50 pmSTL Lambert-St Louis-MAD Madrid Barajas

22h 42m2 stops Chicago O'Hare Intl Munich Franz Josef Strauss

5:55 am - 1:25 pmMAD Madrid Barajas-STL Lambert-St Louis

14h 30m1 stop Frankfurt am Main

$715Lufthansa

Mon, Mar 22 - Wed, Mar 31

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

$722British Airways

Wed, Nov 4 - Tue, Nov 10

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

$723British Airways

Wed, Nov 4 - Tue, Nov 10

10:53 am - 2:40 pmSTL Lambert-St Louis-SVQ Sevilla

20h 47m3 stops Chicago O'Hare Intl Montreal Pierre Elliott Trudeau Intl Lisbon Humberto Delgado

6:30 am - 9:40 pmSVQ Sevilla-STL Lambert-St Louis

22h 10m3 stops Lisbon Humberto Delgado Toronto Pearson Intl Chicago O'Hare Intl

$1,988Air Canada

Wed, Nov 11 - Mon, Nov 30

Cheap last minute flights

Enter your travel dates to find the best prices.

9:35 pm - 8:05 pmSTL Lambert-St Louis-MAD Madrid Barajas

15h 30m1 stop London Heathrow

12:10 pm - 7:30 pmMAD Madrid Barajas-STL Lambert-St Louis

14h 20m1 stop London Heathrow

$791British Airways

Wed, Oct 7 - Wed, Oct 21

9:35 pm - 5:35 pmSTL Lambert-St Louis-MAD Madrid Barajas

13h 00m1 stop London Heathrow

10:35 am - 7:30 pmMAD Madrid Barajas-STL Lambert-St Louis

15h 55m1 stop London Heathrow

$791British Airways

Wed, Oct 7 - Wed, Oct 21

8:30 am - 9:00 amSTL Lambert-St Louis-MAD Madrid Barajas

17h 30m2 stops Washington, D.C. Dulles Intl Newark

5:55 am - 1:25 pmMAD Madrid Barajas-STL Lambert-St Louis

14h 30m1 stop Frankfurt am Main

$943United Airlines

Wed, Oct 7 - Wed, Oct 21

6:00 am - 9:35 amSTL Lambert-St Louis-MAD Madrid Barajas

20h 35m2 stops Chicago O'Hare Intl Toronto Pearson Intl

5:55 am - 1:25 pmMAD Madrid Barajas-STL Lambert-St Louis

14h 30m1 stop Frankfurt am Main

$947United Airlines

Wed, Oct 7 - Wed, Oct 21

11:21 am - 9:05 amSTL Lambert-St Louis-BCN Barcelona-El Prat

14h 44m1 stop Philadelphia

12:50 pm - 11:48 pmBCN Barcelona-El Prat-STL Lambert-St Louis

17h 58m1 stop Philadelphia

$949American Airlines

Sat, Oct 10 - Fri, Oct 23

12:28 pm - 11:20 amSTL Lambert-St Louis-MAD Madrid Barajas

15h 52m2 stops Minneapolis St Paul Paris Charles de Gaulle

6:00 am - 4:43 pmMAD Madrid Barajas-STL Lambert-St Louis

17h 43m2 stops Amsterdam Schiphol Minneapolis St Paul

$954Delta

Wed, Oct 7 - Wed, Oct 21

12:00 pm - 11:20 amSTL Lambert-St Louis-MAD Madrid Barajas

16h 20m2 stops Atlanta Hartsfield-Jackson Paris Charles de Gaulle

6:00 am - 8:51 pmMAD Madrid Barajas-STL Lambert-St Louis

21h 51m2 stops Amsterdam Schiphol Detroit Metropolitan Wayne County

$954Delta

Wed, Oct 7 - Wed, Oct 21

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

12h 50m1 stop Montreal Pierre Elliott Trudeau Intl

1:35 pm - 12:10 pmBCN Barcelona-El Prat-STL Lambert-St Louis

29h 35m2 stops Montreal Pierre Elliott Trudeau Intl Chicago O'Hare Intl

$991Air Canada

Tue, Oct 6 - Wed, Nov 11

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

12h 50m1 stop Montreal Pierre Elliott Trudeau Intl

1:35 pm - 7:23 pmBCN Barcelona-El Prat-STL Lambert-St Louis

36h 48m2 stops Montreal Pierre Elliott Trudeau Intl Chicago O'Hare Intl

$991Air Canada

Tue, Oct 6 - Fri, Nov 13

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

17h 00m2 stops Chicago O'Hare Intl Montreal Pierre Elliott Trudeau Intl

6:50 am - 1:45 pmBCN Barcelona-El Prat-STL Lambert-St Louis

13h 55m1 stop Frankfurt am Main

$1,019Multiple Airlines

Tue, Oct 6 - Wed, Nov 11

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Iberia flights from St. Louis to Spain

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

Iberia

Mar 22

STL11:56 amLambert-St Louis

14h 59m

1 stop

MAD8:55 amMadrid Barajas

Mar 31

MAD3:25 pmMadrid Barajas

12h 44m

1 stop

STL9:09 pmLambert-St Louis

$718

Iberia

Dec 11

STL9:59 amLambert-St Louis

15h 51m

1 stop

MAD8:50 amMadrid Barajas

Jan 13

MAD12:00 pmMadrid Barajas

14h 27m

1 stop

STL7:27 pmLambert-St Louis

$785

Iberia

Dec 11

STL9:59 amLambert-St Louis

15h 51m

1 stop

MAD8:50 amMadrid Barajas

Jan 11

MAD7:30 pmMadrid Barajas

32h 01m

2 stops

STL8:31 pmLambert-St Louis

$800

Virgin Atlantic flights from St. Louis to Spain

Our best Virgin Atlantic deals on St. Louis to Spain flight tickets

Virgin Atlantic

Jan 20

STL3:40 pmLambert-St Louis

13h 05m

1 stop

MAD11:45 amMadrid Barajas

Jan 27

MAD9:20 amMadrid Barajas

18h 17m

2 stops

STL8:37 pmLambert-St Louis

$726

Virgin Atlantic

Feb 1

STL9:00 amLambert-St Louis

19h 45m

1 stop

MAD11:45 amMadrid Barajas

Feb 6

MAD1:55 pmMadrid Barajas

35h 06m

1 stop

STL6:01 pmLambert-St Louis

$771

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisBarcelona

STL Lambert-St Louis - BCN Barcelona-El Prat

STLBCN

Lambert-St Louis

Wed 11/4

8:30 am-1:15 pm

1 stop21h 45m

Barcelona-El Prat

Wed 11/11

1:35 pm-4:17 pm

2 stops33h 42m

$705

St. LouisMadrid

STL Lambert-St Louis - MAD Madrid Barajas

STLMAD

Lambert-St Louis

Mon 11/2

4:05 pm-8:00 am

2 stops32h 55m

Madrid Barajas

Wed 11/18

6:05 am-1:45 pm

1 stop14h 40m

$707

St. LouisBarcelona

STL Lambert-St Louis - BCN Barcelona-El Prat

STLBCN

Lambert-St Louis

Wed 11/4

9:40 am-9:35 am

2 stops16h 55m

Barcelona-El Prat

Wed 11/11

1:35 pm-4:17 pm

2 stops33h 42m

$709

Quickest round-trip

St. LouisMadrid

STL Lambert-St Louis - MAD Madrid Barajas

STLMAD

Lambert-St Louis

Mon 11/2

11:29 am-9:30 am

1 stop15h 01m

Madrid Barajas

Wed 11/18

6:05 am-1:45 pm

1 stop14h 40m

$711

St. LouisMadrid

STL Lambert-St Louis - MAD Madrid Barajas

STLMAD

Lambert-St Louis

Mon 11/2

4:05 pm-8:00 am

2 stops32h 55m

Madrid Barajas

Wed 11/18

1:25 pm-2:34 pm

2 stops32h 09m

$713

St. LouisBarcelona

STL Lambert-St Louis - BCN Barcelona-El Prat

STLBCN

Lambert-St Louis

Mon 11/2

9:59 am-9:00 am

2 stops16h 01m

Barcelona-El Prat

Wed 11/18

6:50 am-1:45 pm

1 stop13h 55m

$713

St. LouisMadrid

STL Lambert-St Louis - MAD Madrid Barajas

STLMAD

Lambert-St Louis

Mon 3/22

1:08 pm-5:50 pm

2 stops22h 42m

Madrid Barajas

Wed 3/31

5:55 am-1:25 pm

1 stop14h 30m

$715

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

Tue 11/10

12:00 pm-8:26 pm

1 stop15h 26m

$722

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

Tue 11/10

12:00 pm-8:26 pm

1 stop15h 26m

$723

St. LouisSeville

STL Lambert-St Louis - SVQ Sevilla

STLSVQ

Lambert-St Louis

Wed 11/11

10:53 am-2:40 pm

3 stops20h 47m

Sevilla

Mon 11/30

6:30 am-9:40 pm

3 stops22h 10m

$1,988

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 April, then you should wait until February to fly from St. Louis, when ticket prices are also cheap, with an average price of $701.

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 $948 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 $755 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	$341
Fastest flight time	11h 40m
Direct flights	None

The best one-way flight to Spain from St. Louis in the past 72 hours is $341. The best round-trip flight deal from St. Louis to Spain found on momondo in the last 72 hours is $705.

The fastest flight from St. Louis to Spain takes 11h 40m

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 October 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 8,259 reviews	Search Lufthansa flights
Delta	PriceFrom $489	Free Cancellation	Rating 7.8 8,634 reviews	Search Delta flights
British Airways	PriceFrom $516	Free Cancellation	Rating 6.7 8,245 reviews	Search British Airways flights
Iberia	PriceFrom $523	Free Cancellation	Rating 7.0 3,258 reviews	Search Iberia flights
United Airlines	PriceFrom $560	Free Cancellation	Rating 7.4 10,289 reviews	Search United Airlines flights
American Airlines	PriceFrom $574	Free Cancellation	Rating 7.0 12,132 reviews	Search American Airlines flights
Air Canada	PriceFrom $648	Free Cancellation	Rating 7.1 11,728 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.