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

Lufthansa, United Airlines, and Virgin Atlantic are the most popular carriers operating from Lambert-St Louis to Madrid Barajas

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.

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

Chicago (ORD) was the most common stop: 53% of momondo users choosing 1-stop flights on this route connected there.

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 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 30% 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 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.

$299 Cheap Flights from St. Louis to Madrid in 2026

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Round-trip

One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

2:33 pm - 8:20 am

STL

MAD

10h 47m

1 stop

1:00 pm - 10:59 pm

MAD

STL

16h 59m

1 stop

$634Iberia

Wed, Apr 22 - Wed, Apr 29

4:32 pm - 5:30 am

STL

MAD

29h 58m

1 stop

3:25 pm - 11:38 pm

MAD

STL

15h 13m

1 stop

$636British Airways

Sat, Aug 15 - Sat, Sep 12

5:15 pm - 9:55 am

STL

MAD

33h 40m

1 stop

12:45 pm - 9:19 pm

MAD

STL

15h 34m

1 stop

$638Delta

Sun, Apr 12 - Tue, Apr 28

5:32 pm - 8:50 am

STL

MAD

32h 18m

2 stops

8:25 am - 11:00 pm

MAD

STL

21h 35m

2 stops

$640United Airlines

Sat, Aug 15 - Sat, Sep 12

12:59 pm - 9:35 am

STL

MAD

13h 36m

1 stop

1:00 pm - 10:59 pm

MAD

STL

16h 59m

1 stop

$641British Airways

Tue, Apr 14 - Wed, Apr 22

6:15 am - 6:50 am

STL

MAD

17h 35m

2 stops

8:25 am - 11:11 pm

MAD

STL

21h 46m

2 stops

$645United Airlines

Tue, Apr 21 - Wed, Apr 29

8:30 am - 8:05 am

STL

MAD

16h 35m

1 stop

8:25 am - 7:31 pm

MAD

STL

18h 06m

2 stops

$646United Airlines

Tue, Apr 21 - Wed, Apr 29

5:15 pm - 9:55 am

STL

MAD

33h 40m

1 stop

12:20 pm - 9:27 am

MAD

STL

28h 07m

2 stops

$647Delta

Sun, Apr 12 - Tue, Apr 28

8:54 am - 8:20 am

STL

MAD

16h 26m

1 stop

12:10 pm - 7:30 pm

MAD

STL

14h 20m

1 stop

$648Multiple Airlines

Tue, Apr 14 - Tue, Apr 28

11:15 am - 8:05 am

STL

MAD

13h 50m

2 stops

11:15 am - 9:13 pm

MAD

STL

16h 58m

2 stops

$650United Airlines

Tue, Apr 14 - Wed, Apr 22

Iberia flights from St. Louis to Madrid

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

Iberia

Apr 22

STL2:33 pmLambert-St Louis

10h 47m

1 stop

MAD8:20 amMadrid Barajas

Apr 29

MAD1:00 pmMadrid Barajas

16h 59m

1 stop

STL10:59 pmLambert-St Louis

$634

Iberia

Aug 15

STL8:00 pmLambert-St Louis

29h 20m

1 stop

MAD8:20 amMadrid Barajas

Sep 12

MAD12:40 pmMadrid Barajas

14h 35m

1 stop

STL8:15 pmLambert-St Louis

$671

Iberia

Mar 15

STL2:00 pmLambert-St Louis

11h 55m

1 stop

MAD7:55 amMadrid Barajas

Mar 22

MAD10:00 pmMadrid Barajas

29h 11m

2 stops

STL9:11 pmLambert-St Louis

$1,311

Delta flights from St. Louis to Madrid

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

Delta

Apr 12

STL5:15 pmLambert-St Louis

33h 40m

1 stop

MAD9:55 amMadrid Barajas

Apr 28

MAD2:35 pmMadrid Barajas

25h 52m

1 stop

STL9:27 amLambert-St Louis

$638

Delta

Apr 12

STL5:15 pmLambert-St Louis

33h 40m

1 stop

MAD9:55 amMadrid Barajas

Apr 28

MAD12:20 pmMadrid Barajas

28h 07m

2 stops

STL9:27 amLambert-St Louis

$647

Delta

Aug 18

STL7:20 amLambert-St Louis

16h 00m

2 stops

MAD6:20 amMadrid Barajas

Sep 8

MAD12:45 pmMadrid Barajas

14h 46m

2 stops

STL8:31 pmLambert-St Louis

$670

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 4/22

2:33 pm-8:20 am

1 stop10h 47m

Madrid Barajas

Wed 4/29

1:00 pm-10:59 pm

1 stop16h 59m

$634

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Sat 8/15

4:32 pm-5:30 am

1 stop29h 58m

Madrid Barajas

Sat 9/12

3:25 pm-11:38 pm

1 stop15h 13m

$636

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Sun 4/12

5:15 pm-9:55 am

1 stop33h 40m

Madrid Barajas

Tue 4/28

12:45 pm-9:19 pm

1 stop15h 34m

$638

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Sat 8/15

5:32 pm-8:50 am

2 stops32h 18m

Madrid Barajas

Sat 9/12

8:25 am-11:00 pm

2 stops21h 35m

$640

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Tue 4/14

12:59 pm-9:35 am

1 stop13h 36m

Madrid Barajas

Wed 4/22

1:00 pm-10:59 pm

1 stop16h 59m

$641

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Tue 4/21

6:15 am-6:50 am

2 stops17h 35m

Madrid Barajas

Wed 4/29

8:25 am-11:11 pm

2 stops21h 46m

$645

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Tue 4/21

8:30 am-8:05 am

1 stop16h 35m

Madrid Barajas

Wed 4/29

8:25 am-7:31 pm

2 stops18h 06m

$646

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Sun 4/12

5:15 pm-9:55 am

1 stop33h 40m

Madrid Barajas

Tue 4/28

12:20 pm-9:27 am

2 stops28h 07m

$647

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Tue 4/14

8:54 am-8:20 am

1 stop16h 26m

Madrid Barajas

Tue 4/28

12:10 pm-7:30 pm

1 stop14h 20m

$648

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Tue 4/14

11:15 am-8:05 am

2 stops13h 50m

Madrid Barajas

Wed 4/22

11:15 am-9:13 pm

2 stops16h 58m

$650

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 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 $801 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 50% 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	10h 45m
Direct flights	None

The fastest flight from St. Louis to Madrid takes 10h 45m

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

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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. 10h 45m 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 24% of all bookings. The subsequent popular airlines are Iberia at 22%, British Airways at 22%, and United Airlines at 13%.

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 7,843 reviews	Search Lufthansa flights
British Airways	PriceFrom $516	Free Cancellation	Rating 6.7 7,781 reviews	Search British Airways flights
Iberia	PriceFrom $552	Free Cancellation	Rating 7.0 3,133 reviews	Search Iberia flights
United Airlines	PriceFrom $578	Free Cancellation	Rating 7.4 9,415 reviews	Search United Airlines flights
Delta	PriceFrom $580	Free Cancellation	Rating 7.9 8,280 reviews	Search Delta flights
American Airlines	PriceFrom $582	Free Cancellation	Rating 7.1 11,425 reviews	Search American Airlines flights
Air Canada	PriceFrom $701	Free Cancellation	Rating 7.1 10,800 reviews	Search Air Canada flights

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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 $299

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 8/8. 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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How to get the cheapest flight ticket from St. Louis to 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.

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Find better results for your trip to Spain

Fly your favorite airline to Madrid

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

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