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

Chicago (ORD) was the most common stop: 44% of momondo users choosing 1-stop flights on this route connected there.

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 36m.

What airlines fly to Madrid?

American Airlines, Iberia and British Airways are the top three most popular airlines that fly to Madrid from St. Louis according to our data. American Airlines is the first choice among our users, with 31% of people opting to fly with this airline when traveling to Madrid. Keep in mind that there are 7 different airlines that fly to Madrid on a routine basis, so you have a few additional options to choose from.

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

Flights via Frankfurt am Main (FRA) offer the lowest average round-trip price of $623.

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

British Airways is the most popular carrier operating from Lambert-St Louis to Madrid Barajas

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

Flights connecting via Montreal (YUL) have the shortest average one-way travel time: 10h 10m.

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 7 as of March 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.

$312 Cheap Flights from St. Louis to Madrid in 2026

Q: 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 $696 to $962. The lowest price recently found on this route was $674.

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One-way

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Enter your travel dates to find the best prices.

12:10 pm - 6:50 am

STL

MAD

11h 40m

1 stop

6:00 am - 1:25 pm

MAD

STL

14h 25m

1 stop

$674Multiple Airlines

Sun, Aug 16 - Fri, Sep 11

12:55 pm - 8:20 am

STL

MAD

12h 25m

1 stop

1:35 pm - 10:17 pm

MAD

STL

15h 42m

1 stop

$686Multiple Airlines

Wed, Apr 15 - Wed, Apr 22

12:59 pm - 9:35 am

STL

MAD

13h 36m

1 stop

10:25 am - 6:04 pm

MAD

STL

14h 39m

1 stop

$690British Airways

Tue, Apr 14 - Wed, Apr 29

2:33 pm - 8:20 am

STL

MAD

10h 47m

1 stop

1:35 pm - 7:33 pm

MAD

STL

12h 58m

1 stop

$694Iberia

Tue, Apr 21 - Tue, Apr 28

12:45 pm - 9:55 am

STL

MAD

14h 10m

1 stop

12:45 pm - 9:19 pm

MAD

STL

15h 34m

1 stop

$696Delta

Mon, Apr 13 - Tue, Apr 28

10:07 am - 9:55 am

STL

MAD

16h 48m

1 stop

6:00 am - 4:42 pm

MAD

STL

17h 42m

2 stops

$697Delta

Mon, Apr 13 - Wed, Apr 22

9:59 am - 9:55 am

STL

MAD

16h 56m

2 stops

12:45 pm - 9:19 pm

MAD

STL

15h 34m

1 stop

$700Delta

Wed, Apr 15 - Tue, Apr 28

8:03 pm - 1:30 pm

STL

MAD

10h 27m

1 stop

11:45 am - 7:33 pm

MAD

STL

14h 48m

1 stop

$701Iberia

Sun, Apr 19 - Sun, Apr 26

11:42 am - 9:55 am

STL

MAD

15h 13m

2 stops

12:45 pm - 11:36 pm

MAD

STL

17h 51m

1 stop

$709Virgin Atlantic

Wed, Apr 15 - Wed, Apr 22

11:37 am - 5:40 pm

STL

MAD

23h 03m

2 stops

5:55 am - 9:13 pm

MAD

STL

22h 18m

2 stops

$712Lufthansa

Tue, Apr 21 - Tue, Apr 28

Lufthansa flights from St. Louis to Madrid

Our best Lufthansa deals on St. Louis to Madrid flight tickets

Lufthansa

Apr 21

STL11:37 amLambert-St Louis

23h 03m

2 stops

MAD5:40 pmMadrid Barajas

Apr 28

MAD5:55 amMadrid Barajas

22h 18m

2 stops

STL9:13 pmLambert-St Louis

$712

Lufthansa

Aug 15

STL6:55 pmLambert-St Louis

15h 45m

2 stops

MAD5:40 pmMadrid Barajas

Sep 11

MAD6:00 amMadrid Barajas

14h 25m

1 stop

STL1:25 pmLambert-St Louis

$733

Lufthansa

Apr 22

STL12:15 pmLambert-St Louis

27h 15m

2 stops

MAD10:30 pmMadrid Barajas

May 1

MAD6:00 amMadrid Barajas

14h 25m

1 stop

STL1:25 pmLambert-St Louis

$747

American Airlines flights from St. Louis to Madrid

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

American Airlines

Aug 15

STL9:08 amLambert-St Louis

13h 22m

1 stop

MAD5:30 amMadrid Barajas

Sep 12

MAD11:45 amMadrid Barajas

13h 17m

1 stop

STL6:02 pmLambert-St Louis

$786

American Airlines

Mar 28

STL6:33 pmLambert-St Louis

30h 47m

1 stop

MAD7:20 amMadrid Barajas

Apr 9

MAD10:25 amMadrid Barajas

16h 08m

2 stops

STL7:33 pmLambert-St Louis

$1,048

American Airlines

Mar 29

STL5:50 pmLambert-St Louis

30h 00m

1 stop

MAD6:50 amMadrid Barajas

Apr 6

MAD5:30 pmMadrid Barajas

24h 24m

1 stop

STL10:54 amLambert-St Louis

$1,193

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Sun 8/16

12:10 pm-6:50 am

1 stop11h 40m

Madrid Barajas

Fri 9/11

6:00 am-1:25 pm

1 stop14h 25m

$674

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 4/15

12:55 pm-8:20 am

1 stop12h 25m

Madrid Barajas

Wed 4/22

1:35 pm-10:17 pm

1 stop15h 42m

$686

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Tue 4/14

12:59 pm-9:35 am

1 stop13h 36m

Madrid Barajas

Wed 4/29

10:25 am-6:04 pm

1 stop14h 39m

$690

Quickest round-trip

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Tue 4/21

2:33 pm-8:20 am

1 stop10h 47m

Madrid Barajas

Tue 4/28

1:35 pm-7:33 pm

1 stop12h 58m

$694

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Mon 4/13

12:45 pm-9:55 am

1 stop14h 10m

Madrid Barajas

Tue 4/28

12:45 pm-9:19 pm

1 stop15h 34m

$696

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Mon 4/13

10:07 am-9:55 am

1 stop16h 48m

Madrid Barajas

Wed 4/22

6:00 am-4:42 pm

2 stops17h 42m

$697

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 4/15

9:59 am-9:55 am

2 stops16h 56m

Madrid Barajas

Tue 4/28

12:45 pm-9:19 pm

1 stop15h 34m

$700

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Sun 4/19

8:03 pm-1:30 pm

1 stop10h 27m

Madrid Barajas

Sun 4/26

11:45 am-7:33 pm

1 stop14h 48m

$701

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 4/15

11:42 am-9:55 am

2 stops15h 13m

Madrid Barajas

Wed 4/22

12:45 pm-11:36 pm

1 stop17h 51m

$709

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Tue 4/21

11:37 am-5:40 pm

2 stops23h 03m

Madrid Barajas

Tue 4/28

5:55 am-9:13 pm

2 stops22h 18m

$712

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?

What is the cheapest month to fly to Madrid?

The month of November is, on average, the cheapest month to fly to Madrid from St. Louis, with most prices found around $630. If you don’t want to visit Madrid in November, then you should wait until February to fly from St. Louis, when ticket prices are also cheap, with an average price of $636.

How far in advance should I book a flight 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 $799 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 $694 on momondo.

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

You could potentially save up to 16% 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?

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

Fastest flight time	13h 38m
Direct flights	None

The fastest flight from St. Louis to Madrid takes 13h 38m

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

Search flight deals

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. 13h 38m 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 7 as of March 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 American Airlines, representing 27% of all bookings. The subsequent popular airlines are British Airways at 22%, Iberia at 19%, and United Airlines at 14%.

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 7,858 reviews	Search Lufthansa flights
Delta	PriceFrom $489	Free Cancellation	Rating 7.9 8,312 reviews	Search Delta flights
British Airways	PriceFrom $516	Free Cancellation	Rating 6.7 7,805 reviews	Search British Airways flights
Iberia	PriceFrom $552	Free Cancellation	Rating 7.0 3,146 reviews	Search Iberia flights
United Airlines	PriceFrom $578	Free Cancellation	Rating 7.4 9,452 reviews	Search United Airlines flights
American Airlines	PriceFrom $582	Free Cancellation	Rating 7.1 11,487 reviews	Search American Airlines flights
Air Canada	PriceFrom $701	Free Cancellation	Rating 7.1 10,827 reviews	Search Air Canada flights

Toledo

Segovia

Fuenlabrada

Getafe

Cuenca

San Lorenzo de El Escorial

Guadalajara

Why use momondo?

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 $312

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 8/15. 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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Lufthansa flights from St. Louis to Madrid

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Our best American Airlines 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 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

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

Fastest flight time

Direct flights

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

Daily price changes in your inbox - only with Price Alerts.

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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