What airlines fly to Madrid?

British Airways, American Airlines and Iberia are the top three most popular airlines that fly to Madrid from St. Louis according to our data. British Airways is the first choice among our users, with 38% of people opting to fly with this airline when traveling to Madrid. Keep in mind that there are 6 different airlines that fly to Madrid on a routine basis, so you have a few additional options to choose from.

Which layover airport has the shortest connection time from St. Louis to Madrid?

Atlanta (ATL) has the shortest average layover time for this route: 1h 34m.

Which layover airport offers the lowest fares from St. Louis to Madrid?

Flights via Chicago (ORD) offer the lowest average round-trip price of $630.

Which airport is the most popular layover for flights between St. Louis and Madrid?

Charlotte (CLT) was the most common stop: 38% of momondo users choosing 1-stop flights on this route connected there.

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

Iberia, Aer Lingus, and Air Canada are the most popular carriers operating from Lambert-St Louis to Madrid Barajas

Which layover airport has the shortest travel time from St. Louis to Madrid?

Flights connecting via Atlanta (ATL) have the shortest average one-way travel time: 10h 47m.

When did momondo last update prices for flights from Lambert-St Louis Airport to Madrid Barajas Airport?

Prices for flights from Lambert-St Louis Airport to Madrid Barajas Airport are updated daily.

How many operators does momondo search for flights from Lambert-St Louis Airport to Madrid Barajas Airport?

The number of operators available for flights from Lambert-St Louis Airport to Madrid Barajas Airport is 6 as of September 2026.

How old do you have to be to fly from Lambert-St Louis Airport to Madrid Barajas Airport?

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 Madrid Barajas Airport.

What documentation or ID do you need to fly to Madrid Barajas Airport?

The travel and health documents you'll need for your trip to Madrid Barajas Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Madrid Barajas Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

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

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from St. Louis to Madrid

Round-trip

One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

2:40 pm - 8:50 amSTL Lambert-St Louis-MAD Madrid Barajas

11h 10m1 stop Toronto Pearson Intl

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

13h 50m1 stop Toronto Pearson Intl

$549Air Canada

Mon, Oct 5 - Wed, Oct 21

1:17 pm - 7:45 amSTL Lambert-St Louis-MAD Madrid Barajas

11h 28m1 stop Washington, D.C. Dulles Intl

1:25 pm - 10:15 pmMAD Madrid Barajas-STL Lambert-St Louis

39h 50m2 stops Montreal Pierre Elliott Trudeau Intl Newark

$559United Airlines

Tue, Dec 1 - Wed, Dec 9

6:50 pm - 8:00 amSTL Lambert-St Louis-MAD Madrid Barajas

54h 10m2 stops Chicago O'Hare Intl Montreal Pierre Elliott Trudeau Intl

1:25 pm - 12:22 pmMAD Madrid Barajas-STL Lambert-St Louis

29h 57m2 stops Montreal Pierre Elliott Trudeau Intl Chicago O'Hare Intl

$568Air Canada

Sat, Nov 21 - Tue, Dec 8

8:30 am - 8:05 amSTL Lambert-St Louis-MAD Madrid Barajas

16h 35m1 stop Washington, D.C. Dulles Intl

11:15 am - 10:59 pmMAD Madrid Barajas-STL Lambert-St Louis

18h 44m2 stops Washington, D.C. Dulles Intl Chicago O'Hare Intl

$569United Airlines

Mon, Oct 5 - Wed, Oct 21

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

13h 00m1 stop London Heathrow

3:20 pm - 10:14 pmMAD Madrid Barajas-STL Lambert-St Louis

13h 54m1 stop Philadelphia

$572British Airways

Wed, Oct 7 - Wed, Oct 21

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

13h 00m1 stop London Heathrow

3:20 pm - 10:14 pmMAD Madrid Barajas-STL Lambert-St Louis

13h 54m1 stop Philadelphia

$573British Airways

Wed, Oct 7 - Wed, Oct 21

12:47 pm - 2:25 pmSTL Lambert-St Louis-MAD Madrid Barajas

18h 38m1 stop Dallas/Fort Worth

10:00 am - 6:18 pmMAD Madrid Barajas-STL Lambert-St Louis

14h 18m1 stop Dallas/Fort Worth

$580Iberia

Wed, Oct 21 - Fri, Oct 30

1:14 pm - 8:50 amSTL Lambert-St Louis-MAD Madrid Barajas

12h 36m1 stop Chicago O'Hare Intl

1:00 pm - 8:19 pmMAD Madrid Barajas-STL Lambert-St Louis

14h 19m1 stop Dallas/Fort Worth

$580Iberia

Tue, Dec 1 - Wed, Dec 9

6:32 am - 7:20 amSTL Lambert-St Louis-MAD Madrid Barajas

17h 48m2 stops Detroit Metropolitan Wayne County New York John F Kennedy Intl

9:20 am - 8:32 pmMAD Madrid Barajas-STL Lambert-St Louis

18h 12m2 stops New York John F Kennedy Intl Detroit Metropolitan Wayne County

$584Delta

Tue, Dec 1 - Wed, Dec 9

12:28 pm - 9:30 amSTL Lambert-St Louis-MAD Madrid Barajas

14h 02m2 stops Minneapolis St Paul Amsterdam Schiphol

10:50 am - 11:54 pmMAD Madrid Barajas-STL Lambert-St Louis

19h 04m2 stops Amsterdam Schiphol Atlanta Hartsfield-Jackson

$634Delta

Wed, Oct 21 - Fri, Oct 30

Cheap last minute flights

Enter your travel dates to find the best prices.

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

6:30 am - 5:35 amSTL Lambert-St Louis-MAD Madrid Barajas

16h 05m1 stop Philadelphia

7:10 pm - 9:57 pmMAD Madrid Barajas-STL Lambert-St Louis

33h 47m2 stops London Heathrow Dallas/Fort Worth

$696Iberia

Thu, Sep 24 - Sat, Oct 3

1:55 pm - 12:10 pmSTL Lambert-St Louis-MAD Madrid Barajas

15h 15m2 stops Detroit Metropolitan Wayne County Amsterdam Schiphol

6:00 am - 8:07 pmMAD Madrid Barajas-STL Lambert-St Louis

21h 07m2 stops Amsterdam Schiphol Atlanta Hartsfield-Jackson

$852Delta

Thu, Sep 24 - Sat, Oct 3

10:14 am - 9:05 amSTL Lambert-St Louis-MAD Madrid Barajas

15h 51m1 stop Dallas/Fort Worth

3:25 pm - 9:44 pmMAD Madrid Barajas-STL Lambert-St Louis

13h 19m1 stop Philadelphia

$1,202British Airways

Mon, Sep 21 - Wed, Sep 23

9:40 am - 9:00 amSTL Lambert-St Louis-MAD Madrid Barajas

16h 20m2 stops Chicago O'Hare Intl Newark

12:45 pm - 6:41 pmMAD Madrid Barajas-STL Lambert-St Louis

12h 56m1 stop Montreal Pierre Elliott Trudeau Intl

$1,231United Airlines

Mon, Sep 21 - Wed, Sep 23

10:05 am - 9:55 amSTL Lambert-St Louis-MAD Madrid Barajas

16h 50m2 stops Atlanta Hartsfield-Jackson New York John F Kennedy Intl

12:45 pm - 11:16 pmMAD Madrid Barajas-STL Lambert-St Louis

17h 31m2 stops New York John F Kennedy Intl Minneapolis St Paul

$1,239Virgin Atlantic

Mon, Sep 21 - Wed, Sep 23

6:40 am - 9:55 amSTL Lambert-St Louis-MAD Madrid Barajas

20h 15m2 stops Detroit Metropolitan Wayne County New York John F Kennedy Intl

12:45 pm - 11:16 pmMAD Madrid Barajas-STL Lambert-St Louis

17h 31m2 stops New York John F Kennedy Intl Minneapolis St Paul

$1,242Delta

Mon, Sep 21 - Wed, Sep 23

12:10 pm - 11:50 amSTL Lambert-St Louis-MAD Madrid Barajas

16h 40m2 stops Montreal Pierre Elliott Trudeau Intl Brussels Bruxelles-National

11:15 pm - 2:00 pmMAD Madrid Barajas-STL Lambert-St Louis

45h 45m3 stops Manchester Cancun Toronto Pearson Intl

$1,313Multiple Airlines

Mon, Sep 21 - Wed, Sep 23

3:30 pm - 12:15 pmSTL Lambert-St Louis-MAD Madrid Barajas

13h 45m1 stop Frankfurt am Main

8:20 am - 1:25 pmMAD Madrid Barajas-STL Lambert-St Louis

36h 05m1 stop Frankfurt am Main

$5,656Lufthansa

Tue, Sep 22 - Thu, Sep 24

8:20 am - 6:50 amSTL Lambert-St Louis-MAD Madrid Barajas

15h 30m2 stops Newark Montreal Pierre Elliott Trudeau Intl

10:50 am - 9:09 pmMAD Madrid Barajas-STL Lambert-St Louis

17h 19m1 stop Newark

$6,941Lufthansa

Tue, Sep 22 - Thu, Sep 24

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United Airlines flights from St. Louis to Madrid

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

United Airlines

Dec 1

STL1:17 pmLambert-St Louis

11h 28m

1 stop

MAD7:45 amMadrid Barajas

Dec 9

MAD1:25 pmMadrid Barajas

39h 50m

2 stops

STL10:15 pmLambert-St Louis

$559

United Airlines

Oct 5

STL8:30 amLambert-St Louis

16h 35m

1 stop

MAD8:05 amMadrid Barajas

Oct 21

MAD10:50 amMadrid Barajas

31h 32m

1 stop

STL11:22 amLambert-St Louis

$569

United Airlines

Oct 5

STL8:30 amLambert-St Louis

16h 35m

1 stop

MAD8:05 amMadrid Barajas

Oct 21

MAD11:15 amMadrid Barajas

18h 44m

2 stops

STL10:59 pmLambert-St Louis

$570

British Airways flights from St. Louis to Madrid

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

British Airways

Oct 7

STL9:35 pmLambert-St Louis

13h 00m

1 stop

MAD5:35 pmMadrid Barajas

Oct 21

MAD3:20 pmMadrid Barajas

13h 54m

1 stop

STL10:14 pmLambert-St Louis

$572

British Airways

Oct 7

STL9:35 pmLambert-St Louis

13h 00m

1 stop

MAD5:35 pmMadrid Barajas

Oct 21

MAD3:20 pmMadrid Barajas

13h 54m

1 stop

STL10:14 pmLambert-St Louis

$573

British Airways

Sep 29

STL9:35 pmLambert-St Louis

12h 55m

1 stop

MAD5:30 pmMadrid Barajas

Oct 9

MAD3:20 pmMadrid Barajas

13h 54m

1 stop

STL10:14 pmLambert-St Louis

$578

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

St. LouisMadrid

STL Lambert-St Louis - MAD Madrid Barajas

STLMAD

Lambert-St Louis

Mon 10/5

2:40 pm-8:50 am

1 stop11h 10m

Madrid Barajas

Wed 10/21

1:30 pm-8:20 pm

1 stop13h 50m

$549

St. LouisMadrid

STL Lambert-St Louis - MAD Madrid Barajas

STLMAD

Lambert-St Louis

Tue 12/1

1:17 pm-7:45 am

1 stop11h 28m

Madrid Barajas

Wed 12/9

1:25 pm-10:15 pm

2 stops39h 50m

$559

St. LouisMadrid

STL Lambert-St Louis - MAD Madrid Barajas

STLMAD

Lambert-St Louis

Sat 11/21

6:50 pm-8:00 am

2 stops54h 10m

Madrid Barajas

Tue 12/8

1:25 pm-12:22 pm

2 stops29h 57m

$568

St. LouisMadrid

STL Lambert-St Louis - MAD Madrid Barajas

STLMAD

Lambert-St Louis

Mon 10/5

8:30 am-8:05 am

1 stop16h 35m

Madrid Barajas

Wed 10/21

11:15 am-10:59 pm

2 stops18h 44m

$569

St. LouisMadrid

STL Lambert-St Louis - MAD Madrid Barajas

STLMAD

Lambert-St Louis

Wed 10/7

9:35 pm-5:35 pm

1 stop13h 00m

Madrid Barajas

Wed 10/21

3:20 pm-10:14 pm

1 stop13h 54m

$572

St. LouisMadrid

STL Lambert-St Louis - MAD Madrid Barajas

STLMAD

Lambert-St Louis

Wed 10/7

9:35 pm-5:35 pm

1 stop13h 00m

Madrid Barajas

Wed 10/21

3:20 pm-10:14 pm

1 stop13h 54m

$573

St. LouisMadrid

STL Lambert-St Louis - MAD Madrid Barajas

STLMAD

Lambert-St Louis

Wed 10/21

12:47 pm-2:25 pm

1 stop18h 38m

Madrid Barajas

Fri 10/30

10:00 am-6:18 pm

1 stop14h 18m

$580

St. LouisMadrid

STL Lambert-St Louis - MAD Madrid Barajas

STLMAD

Lambert-St Louis

Tue 12/1

1:14 pm-8:50 am

1 stop12h 36m

Madrid Barajas

Wed 12/9

1:00 pm-8:19 pm

1 stop14h 19m

$580

St. LouisMadrid

STL Lambert-St Louis - MAD Madrid Barajas

STLMAD

Lambert-St Louis

Tue 12/1

6:32 am-7:20 am

2 stops17h 48m

Madrid Barajas

Wed 12/9

9:20 am-8:32 pm

2 stops18h 12m

$584

St. LouisMadrid

STL Lambert-St Louis - MAD Madrid Barajas

STLMAD

Lambert-St Louis

Wed 10/21

12:28 pm-9:30 am

2 stops14h 02m

Madrid Barajas

Fri 10/30

10:50 am-11:54 pm

2 stops19h 04m

$634

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 Madrid

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

Layovers

What is the typical price of a round-trip flight between St. Louis and Madrid?

Prices are currently low for flights on this route.

Typical prices usually range from $754 to $1,000.
The lowest price recently found on this route was $549.

What is the cheapest month to fly to Madrid?

The month of February is, on average, the cheapest month to fly to Madrid from St. Louis, with most prices found around $673. If you don’t want to visit Madrid in February, then you should wait until April to fly from St. Louis, when ticket prices are also cheap, with an average price of $735.

How far in advance should I book a flight from St. Louis to Madrid?

You are more likely to see cheaper flights to Madrid from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Madrid for around $944 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Madrid from St. Louis for as low as $639 on momondo.

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

You could potentially save up to 19% on your flight if you consider stops on a St. Louis to Madrid flight.

How have St. Louis to Madrid flight prices changed over time?

As of September 2026, prices for St. Louis to Madrid flights are approximately 37% cheaper when compared to flights at the same time last year.

When to book flights from St. Louis to Madrid

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to Madrid according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap St. Louis to Madrid (STL to MAD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Madrid

Best Price Found	$322
Fastest flight time	11h 28m
Direct flights	None

The best one-way flight to Madrid from St. Louis in the past 72 hours is $322. The best round-trip flight deal from St. Louis to Madrid found on momondo in the last 72 hours is $549.

The fastest flight from St. Louis to Madrid takes 11h 28m

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

Search flight deals

Frequently asked questions about flying from St. Louis to Madrid

How far is Lambert-St Louis to Madrid Barajas by plane?
The straight-line distance from Lambert-St Louis to Madrid Barajas is 4406.9 mi. 11h 28m is a normal flight duration for this route.
When did momondo last update prices for flights from Lambert-St Louis Airport to Madrid Barajas Airport?
Prices for flights from Lambert-St Louis Airport to Madrid Barajas Airport are updated daily.
How many operators does momondo search for flights from Lambert-St Louis Airport to Madrid Barajas Airport?
The number of operators available for flights from Lambert-St Louis Airport to Madrid Barajas Airport is 6 as of September 2026.
How old do you have to be to fly from Lambert-St Louis Airport to Madrid Barajas Airport?
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 Madrid Barajas Airport.
What documentation or ID do you need to fly to Madrid Barajas Airport?
The travel and health documents you'll need for your trip to Madrid Barajas Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Madrid Barajas Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from St. Louis to Madrid?
momondo data reveals that the most frequently booked airline on the route from St. Louis to Madrid is British Airways, representing 34% of all bookings. The subsequent popular airlines are American Airlines at 31%, Iberia at 19%, and Lufthansa at 7%.

Best airlines flying from St. Louis to Madrid

Compare and see reviews for airlines that fly from St. Louis to Madrid with momondo

Airline	Rating	Free Cancellation	Price
Lufthansa	PriceFrom $482	Free Cancellation	Rating 6.8 8,236 reviews	Search Lufthansa flights
Delta	PriceFrom $489	Free Cancellation	Rating 7.8 8,592 reviews	Search Delta flights
British Airways	PriceFrom $516	Free Cancellation	Rating 6.7 8,223 reviews	Search British Airways flights
Iberia	PriceFrom $523	Free Cancellation	Rating 7.0 3,253 reviews	Search Iberia flights
American Airlines	PriceFrom $582	Free Cancellation	Rating 7.0 12,075 reviews	Search American Airlines flights
United Airlines	PriceFrom $623	Free Cancellation	Rating 7.4 10,227 reviews	Search United Airlines flights

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Why should I use momondo to find a flight deal from St. Louis to Madrid?

It is quick and easy to find St. Louis to Madrid flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Madrid that suits you.

Can I find flights from St. Louis to Madrid with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for St. Louis to Madrid flights to just show those with flexible booking policies.

How can momondo help me find flights from St. Louis to Madrid?

Once you have performed a search for St. Louis to Madrid 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 Madrid right now. Can momondo alert me if prices change?

Price alerts on flights to Madrid from St. Louis are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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Cheap flights from St. Louis to Madrid from $322

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Madrid departing on 1/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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United Airlines flights from St. Louis to Madrid

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

British Airways flights from St. Louis to Madrid

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

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How to get the cheapest flight ticket from St. Louis to Madrid

What is the typical price of a round-trip flight between St. Louis and Madrid?

What is the cheapest month to fly to Madrid?

How far in advance should I book a flight from St. Louis to Madrid?

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

How have St. Louis to Madrid flight prices changed over time?

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

What airlines fly to Madrid?

Which airport is the most popular layover for flights between St. Louis and Madrid?

Which layover airport offers the lowest fares from St. Louis to Madrid?

Which layover airport has the shortest travel time from St. Louis to Madrid?

Which layover airport has the shortest connection time from St. Louis to Madrid?

When to book flights from St. Louis to Madrid

Cheap St. Louis to Madrid (STL to MAD) flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying from St. Louis to Madrid

Best airlines flying from St. Louis to Madrid

Compare and see reviews for airlines that fly from St. Louis to Madrid with momondo

Traveling to a place near Madrid?

Why use momondo?

An easier way to manage your Madrid trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

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Find better results for your trip to Spain

Fly your favorite airline to Madrid

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Madrid

List of cabin classes available on flights landing in Madrid. Availability may vary depending on flight origin and airline.

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Popular flights according to clicks in the last 7 days on momondo

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