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.

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?

Iberia, American Airlines and British Airways are the top three most popular airlines that fly to Madrid from St. Louis according to our data. Iberia is the first choice among our users, with 36% 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 airport is the most popular layover for flights between St. Louis and Madrid?

Chicago (ORD) 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?

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

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 $720.

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 November 2025.

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.

$399 Cheap Flights from St. Louis to Madrid in 2025/26

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Cheap round-trip flights

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1:55 pm - 9:15 amSTL-MAD

12h 20m1 stop

10:00 am - 8:47 pmMAD-STL

17h 47m2 stops

$429Delta

Find Deal

Mon, Dec 1 - Wed, Dec 17

9:59 am - 8:00 amSTL-MAD

15h 01m2 stops

10:00 am - 8:39 pmMAD-STL

17h 39m2 stops

$443KLM

Find Deal

Wed, Jan 21 - Wed, Feb 4

6:42 pm - 8:00 amSTL-MAD

30h 18m2 stops

1:35 pm - 3:40 pmMAD-STL

33h 05m2 stops

$465United Airlines

Find Deal

Wed, Dec 3 - Wed, Dec 10

5:27 pm - 8:00 amSTL-MAD

31h 33m2 stops

1:45 pm - 5:03 pmMAD-STL

34h 18m2 stops

$478United Airlines

Find Deal

Wed, Dec 3 - Mon, Dec 8

7:15 am - 6:15 amSTL-MAD

16h 00m1 stop

1:15 pm - 10:44 pmMAD-STL

16h 29m1 stop

$483Iberia

Find Deal

Thu, Jan 8 - Thu, Jan 22

2:54 pm - 12:40 pmSTL-MAD

14h 46m2 stops

12:40 pm - 6:34 pmMAD-STL

12h 54m1 stop

$484British Airways

Find Deal

Thu, Jan 8 - Thu, Jan 22

11:22 am - 5:50 pmSTL-MAD

23h 28m2 stops

6:00 am - 4:03 pmMAD-STL

17h 03m2 stops

$489Lufthansa

Find Deal

Sat, Jan 24 - Sat, Jan 31

3:50 pm - 4:00 pmSTL-MAD

17h 10m1 stop

8:30 am - 11:59 pmMAD-STL

22h 29m2 stops

$496Lufthansa

Find Deal

Wed, Jan 21 - Wed, Feb 4

2:54 pm - 10:20 amSTL-MAD

12h 26m1 stop

12:40 pm - 10:59 pmMAD-STL

17h 19m1 stop

$567Iberia

Find Deal

Wed, Jan 21 - Wed, Feb 4

6:44 pm - 4:55 pmSTL-MAD

15h 11m2 stops

12:55 am - 4:14 pmMAD-STL

22h 19m1 stop

$577British Airways

Find Deal

Thu, Jan 8 - Wed, Jan 21

United Airlines flights from St. Louis to Madrid

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

United Airlines

Dec 3

STL6:42 pmLambert-St Louis

30h 18m

2 stops

MAD8:00 amMadrid Barajas

Dec 10

MAD1:35 pmMadrid Barajas

33h 05m

2 stops

STL3:40 pmLambert-St Louis

$465

Find similar

United Airlines

Dec 3

STL5:27 pmLambert-St Louis

31h 33m

2 stops

MAD8:00 amMadrid Barajas

Dec 8

MAD1:45 pmMadrid Barajas

34h 18m

2 stops

STL5:03 pmLambert-St Louis

$478

Find similar

United Airlines

Jan 8

STL11:20 amLambert-St Louis

18h 40m

2 stops

MAD1:00 pmMadrid Barajas

Jan 22

MAD1:35 pmMadrid Barajas

36h 52m

2 stops

STL7:27 pmLambert-St Louis

$485

Find similar

Lufthansa flights from St. Louis to Madrid

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

Lufthansa

Jan 24

STL11:22 amLambert-St Louis

23h 28m

2 stops

MAD5:50 pmMadrid Barajas

Jan 31

MAD6:00 amMadrid Barajas

17h 03m

2 stops

STL4:03 pmLambert-St Louis

$489

Find similar

Lufthansa

Jan 21

STL3:50 pmLambert-St Louis

17h 10m

1 stop

MAD4:00 pmMadrid Barajas

Feb 4

MAD8:30 amMadrid Barajas

22h 29m

2 stops

STL11:59 pmLambert-St Louis

$496

Find similar

Lufthansa

Nov 23

STL6:43 pmLambert-St Louis

22h 07m

2 stops

MAD11:50 pmMadrid Barajas

Dec 2

MAD2:00 pmMadrid Barajas

30h 55m

1 stop

STL1:55 pmLambert-St Louis

$520

Find similar

Fly from

Fly to

Route

Depart

Return

Price

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Mon 12/1

1:55 pm-9:15 am

1 stop12h 20m

Madrid Barajas

Wed 12/17

10:00 am-8:47 pm

2 stops17h 47m

$429

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 1/21

9:59 am-8:00 am

2 stops15h 01m

Madrid Barajas

Wed 2/4

10:00 am-8:39 pm

2 stops17h 39m

$443

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 12/3

6:42 pm-8:00 am

2 stops30h 18m

Madrid Barajas

Wed 12/10

1:35 pm-3:40 pm

2 stops33h 05m

$465

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 12/3

5:27 pm-8:00 am

2 stops31h 33m

Madrid Barajas

Mon 12/8

1:45 pm-5:03 pm

2 stops34h 18m

$478

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Thu 1/8

7:15 am-6:15 am

1 stop16h 00m

Madrid Barajas

Thu 1/22

1:15 pm-10:44 pm

1 stop16h 29m

$483

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Thu 1/8

2:54 pm-12:40 pm

2 stops14h 46m

Madrid Barajas

Thu 1/22

12:40 pm-6:34 pm

1 stop12h 54m

$484

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Sat 1/24

11:22 am-5:50 pm

2 stops23h 28m

Madrid Barajas

Sat 1/31

6:00 am-4:03 pm

2 stops17h 03m

$489

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 1/21

3:50 pm-4:00 pm

1 stop17h 10m

Madrid Barajas

Wed 2/4

8:30 am-11:59 pm

2 stops22h 29m

$496

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 1/21

2:54 pm-10:20 am

1 stop12h 26m

Madrid Barajas

Wed 2/4

12:40 pm-10:59 pm

1 stop17h 19m

$567

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Thu 1/8

6:44 pm-4:55 pm

2 stops15h 11m

Madrid Barajas

Wed 1/21

12:55 am-4:14 pm

1 stop22h 19m

$577

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 $624. 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 $720.

What is the cheapest day to depart on your flight to Madrid?

The cheapest day to depart on your flight to Madrid is on a Tuesday when prices can be found for as low as $743. This is often the case because there is less demand to fly during this day of the week. Be sure to avoid booking your departure on a Monday as prices are generally higher than usual. According to our data, the average ticket price to Madrid on Monday is $1,028.

What is the cheapest time of day to depart on your flight to Madrid?

Flying to Madrid from St. Louis at noon is the least expensive time of day to depart. momondo users have found prices as low as $809 when looking at flights departing at noon. Flights to Madrid are more costly in the morning, with an average ticket price of $983. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

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 $912 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 $636 on momondo.

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

You could potentially save up to 10% 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 November 2025, prices for St. Louis to Madrid flights are approximately 27% 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

Direct flights	None

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. 12h 07m 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 November 2025.
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 Iberia, representing 30% of all bookings. The subsequent popular airlines are American Airlines at 29%, British Airways at 12%, and United Airlines at 12%.

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 $524	Free Cancellation	Rating 6.8 7,558 reviews	Search Lufthansa flights
British Airways	PriceFrom $546	Free Cancellation	Rating 6.7 7,500 reviews	Search British Airways flights
United Airlines	PriceFrom $578	Free Cancellation	Rating 7.4 9,007 reviews	Search United Airlines flights
Iberia	PriceFrom $586	Free Cancellation	Rating 7.0 3,007 reviews	Search Iberia flights
Delta	PriceFrom $589	Free Cancellation	Rating 7.9 8,001 reviews	Search Delta flights
American Airlines	PriceFrom $636	Free Cancellation	Rating 7.2 11,040 reviews	Search American Airlines flights
Air Canada	PriceFrom $701	Free Cancellation	Rating 7.1 10,416 reviews	Search Air Canada flights

Toledo

Segovia

Getafe

Fuenlabrada

San Lorenzo de El Escorial

Cuenca

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 $399

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 12/31. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

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Find the cheapest flights from St. Louis to Madrid

Cheap round-trip flights

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United Airlines flights from St. Louis to Madrid

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

Lufthansa flights from St. Louis to Madrid

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

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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

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 $624. 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 $720.

What is the cheapest day to depart on your flight to Madrid?

What is the cheapest time of day to depart on your flight to Madrid?

How far in advance should I book a flight to Madrid?

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

You could potentially save up to 10% 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 November 2025, prices for St. Louis to Madrid flights are approximately 27% cheaper when compared to flights at the same time last year.

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

United Airlines, Lufthansa, and Delta are the most popular carriers operating 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?

Chicago (ORD) was the most common stop: 38% 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 $720.

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.

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.

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

Direct flights

How far is Lambert-St Louis to Madrid Barajas by plane?

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

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

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

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

What is the most popular airline 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?

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

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

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

I’m not ready to book a flight from St. Louis to Madrid right now. Can momondo alert me if prices change?

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