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 offers the lowest fares from St. Louis to Madrid?

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

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

Aer Lingus, United Airlines, and Air France 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 34m.

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.

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

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

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7:30 am - 8:00 amSTL Lambert-St Louis-MAD Madrid Barajas

17h 30m2 stops Chicago O'Hare Intl Montreal Pierre Elliott Trudeau Intl

1:25 pm - 9:40 pmMAD Madrid Barajas-STL Lambert-St Louis

39h 15m2 stops Montreal Pierre Elliott Trudeau Intl Chicago O'Hare Intl

$563United Airlines

Tue, Nov 3 - Wed, Nov 11

12:10 pm - 6:50 amSTL Lambert-St Louis-MAD Madrid Barajas

11h 40m1 stop Montreal Pierre Elliott Trudeau Intl

11:15 am - 9:21 pmMAD Madrid Barajas-STL Lambert-St Louis

17h 06m2 stops Washington, D.C. Dulles Intl Chicago O'Hare Intl

$573United Airlines

Sun, Oct 4 - Wed, Oct 14

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

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

12:10 pm - 6:50 amSTL Lambert-St Louis-MAD Madrid Barajas

11h 40m1 stop Montreal Pierre Elliott Trudeau Intl

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

14h 30m1 stop Frankfurt am Main

$574Multiple Airlines

Sun, Oct 4 - Wed, Oct 14

12:47 pm - 9:40 amSTL Lambert-St Louis-MAD Madrid Barajas

37h 53m2 stops Dallas/Fort Worth London Heathrow

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

13h 54m1 stop Philadelphia

$577Iberia

Wed, Oct 7 - Wed, Oct 21

1:49 pm - 8:20 amSTL Lambert-St Louis-MAD Madrid Barajas

11h 31m1 stop Chicago O'Hare Intl

3:55 pm - 11:42 pmMAD Madrid Barajas-STL Lambert-St Louis

14h 47m1 stop Dallas/Fort Worth

$580American Airlines

Sun, Oct 4 - Wed, Oct 14

10:00 am - 10:15 amSTL Lambert-St Louis-MAD Madrid Barajas

17h 15m1 stop Boston Logan Intl

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

9:50 am - 8:25 amSTL Lambert-St Louis-MAD Madrid Barajas

15h 35m1 stop Boston Logan Intl

12:35 pm - 9:47 pmMAD Madrid Barajas-STL Lambert-St Louis

16h 12m1 stop Miami

$580Multiple Airlines

Wed, Nov 4 - Wed, Nov 11

10:12 am - 9:05 amSTL Lambert-St Louis-MAD Madrid Barajas

15h 53m1 stop Dallas/Fort Worth

12:40 pm - 11:59 pmMAD Madrid Barajas-STL Lambert-St Louis

18h 19m1 stop Charlotte Douglas

$630American Airlines

Thu, Oct 15 - Fri, Oct 23

Cheap last minute flights

Enter your travel dates to find the best prices.

11:09 am - 8:05 pmSTL Lambert-St Louis-MAD Madrid Barajas

25h 56m2 stops Philadelphia London Heathrow

9:00 pm - 11:43 pmMAD Madrid Barajas-STL Lambert-St Louis

33h 43m2 stops London Heathrow Dallas/Fort Worth

$694Iberia

Thu, Sep 17 - Sat, Sep 26

11:01 am - 8:05 pmSTL Lambert-St Louis-MAD Madrid Barajas

26h 04m2 stops Chicago O'Hare Intl London Heathrow

10:35 am - 11:43 pmMAD Madrid Barajas-STL Lambert-St Louis

20h 08m2 stops London Heathrow Philadelphia

$786British Airways

Fri, Sep 18 - Tue, Oct 6

1:54 pm - 8:05 pmSTL Lambert-St Louis-MAD Madrid Barajas

23h 11m2 stops Charlotte Douglas London Heathrow

3:20 pm - 11:43 pmMAD Madrid Barajas-STL Lambert-St Louis

15h 23m1 stop Philadelphia

$831British Airways

Fri, Sep 18 - Tue, Oct 6

6:53 pm - 8:05 amSTL Lambert-St Louis-MAD Madrid Barajas

30h 12m2 stops Chicago O'Hare Intl Washington, D.C. Dulles Intl

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

17h 19m1 stop Newark

$840United Airlines

Fri, Sep 18 - Tue, Oct 6

3:34 pm - 8:05 pmSTL Lambert-St Louis-MAD Madrid Barajas

21h 31m2 stops Dallas/Fort Worth London Heathrow

7:30 am - 9:59 pmMAD Madrid Barajas-STL Lambert-St Louis

21h 29m2 stops Dublin Dallas/Fort Worth

$850Iberia

Fri, Sep 18 - Tue, Oct 6

10:21 am - 9:35 amSTL Lambert-St Louis-MAD Madrid Barajas

16h 14m1 stop Charlotte Douglas

5:30 pm - 8:20 amMAD Madrid Barajas-STL Lambert-St Louis

21h 50m1 stop Boston Logan Intl

$892Multiple Airlines

Thu, Sep 17 - Sat, Sep 26

5:47 pm - 4:25 pmSTL Lambert-St Louis-MAD Madrid Barajas

15h 38m2 stops Minneapolis St Paul Amsterdam Schiphol

9:50 am - 9:23 pmMAD Madrid Barajas-STL Lambert-St Louis

18h 33m1 stop Atlanta Hartsfield-Jackson

$929Multiple Airlines

Fri, Sep 18 - Tue, Oct 6

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

39h 30m2 stops Newark Montreal Pierre Elliott Trudeau Intl

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

36h 00m1 stop Frankfurt am Main

$981United Airlines

Mon, Sep 14 - Mon, Sep 21

3:30 pm - 7:50 pmSTL Lambert-St Louis-MAD Madrid Barajas

21h 20m1 stop Frankfurt am Main

5:00 pm - 1:25 pmMAD Madrid Barajas-STL Lambert-St Louis

27h 25m1 stop Frankfurt am Main

$1,159Lufthansa

Fri, Sep 18 - Tue, Oct 6

1:54 pm - 9:35 amSTL Lambert-St Louis-MAD Madrid Barajas

12h 41m1 stop Charlotte Douglas

11:45 am - 8:57 pmMAD Madrid Barajas-STL Lambert-St Louis

16h 12m1 stop Chicago O'Hare Intl

$1,261American Airlines

Fri, Sep 18 - Mon, Oct 5

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Air Canada flights from St. Louis to Madrid

Our best Air Canada deals on St. Louis to Madrid flight tickets

Air Canada

Sep 20

STL9:40 amLambert-St Louis

16h 10m

2 stops

MAD8:50 amMadrid Barajas

Sep 29

MAD6:20 amMadrid Barajas

21h 00m

2 stops

STL8:20 pmLambert-St Louis

$606

Air Canada

Dec 10

STL4:05 pmLambert-St Louis

32h 55m

2 stops

MAD8:00 amMadrid Barajas

Jan 13

MAD1:25 pmMadrid Barajas

39h 22m

2 stops

STL9:47 pmLambert-St Louis

$617

Air Canada

Oct 15

STL12:10 pmLambert-St Louis

11h 40m

1 stop

MAD6:50 amMadrid Barajas

Oct 23

MAD12:45 pmMadrid Barajas

12h 56m

1 stop

STL6:41 pmLambert-St Louis

$622

United Airlines flights from St. Louis to Madrid

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

United Airlines

Nov 3

STL7:30 amLambert-St Louis

17h 30m

2 stops

MAD8:00 amMadrid Barajas

Nov 11

MAD1:25 pmMadrid Barajas

39h 15m

2 stops

STL9:40 pmLambert-St Louis

$563

United Airlines

Oct 4

STL6:00 amLambert-St Louis

17h 50m

2 stops

MAD6:50 amMadrid Barajas

Oct 14

MAD10:50 amMadrid Barajas

17h 19m

1 stop

STL9:09 pmLambert-St Louis

$583

United Airlines

Sep 28

STL10:27 amLambert-St Louis

14h 38m

2 stops

MAD8:05 amMadrid Barajas

Oct 9

MAD11:15 amMadrid Barajas

30h 33m

2 stops

STL10:48 amLambert-St Louis

$584

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisMadrid

STL Lambert-St Louis - MAD Madrid Barajas

STLMAD

Lambert-St Louis

Tue 11/3

7:30 am-8:00 am

2 stops17h 30m

Madrid Barajas

Wed 11/11

1:25 pm-9:40 pm

2 stops39h 15m

$563

St. LouisMadrid

STL Lambert-St Louis - MAD Madrid Barajas

STLMAD

Lambert-St Louis

Sun 10/4

12:10 pm-6:50 am

1 stop11h 40m

Madrid Barajas

Wed 10/14

11:15 am-9:21 pm

2 stops17h 06m

$573

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 10/7

9:35 pm-5:35 pm

1 stop13h 00m

Madrid Barajas

Wed 10/21

3:20 pm-10:14 pm

1 stop13h 54m

$573

Quickest round-trip

St. LouisMadrid

STL Lambert-St Louis - MAD Madrid Barajas

STLMAD

Lambert-St Louis

Sun 10/4

12:10 pm-6:50 am

1 stop11h 40m

Madrid Barajas

Wed 10/14

5:55 am-1:25 pm

1 stop14h 30m

$574

St. LouisMadrid

STL Lambert-St Louis - MAD Madrid Barajas

STLMAD

Lambert-St Louis

Wed 10/7

12:47 pm-9:40 am

2 stops37h 53m

Madrid Barajas

Wed 10/21

3:20 pm-10:14 pm

1 stop13h 54m

$577

St. LouisMadrid

STL Lambert-St Louis - MAD Madrid Barajas

STLMAD

Lambert-St Louis

Sun 10/4

1:49 pm-8:20 am

1 stop11h 31m

Madrid Barajas

Wed 10/14

3:55 pm-11:42 pm

1 stop14h 47m

$580

St. LouisMadrid

STL Lambert-St Louis - MAD Madrid Barajas

STLMAD

Lambert-St Louis

Wed 10/21

10:00 am-10:15 am

1 stop17h 15m

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

Wed 11/4

9:50 am-8:25 am

1 stop15h 35m

Madrid Barajas

Wed 11/11

12:35 pm-9:47 pm

1 stop16h 12m

$580

St. LouisMadrid

STL Lambert-St Louis - MAD Madrid Barajas

STLMAD

Lambert-St Louis

Thu 10/15

10:12 am-9:05 am

1 stop15h 53m

Madrid Barajas

Fri 10/23

12:40 pm-11:59 pm

1 stop18h 19m

$630

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 $854 to $1,188.
The lowest price recently found on this route was $563.

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	13h 00m
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 $563.

The fastest flight from St. Louis to Madrid takes 13h 00m

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. 13h 00m 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 29%, Iberia at 18%, 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 8,220 reviews	Search Lufthansa flights
Delta	PriceFrom $489	Free Cancellation	Rating 7.8 8,565 reviews	Search Delta flights
British Airways	PriceFrom $516	Free Cancellation	Rating 6.7 8,215 reviews	Search British Airways flights
Iberia	PriceFrom $523	Free Cancellation	Rating 7.0 3,247 reviews	Search Iberia flights
American Airlines	PriceFrom $582	Free Cancellation	Rating 7.1 12,050 reviews	Search American Airlines flights
United Airlines	PriceFrom $623	Free Cancellation	Rating 7.4 10,214 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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Air Canada flights from St. Louis to Madrid

Our best Air Canada deals on St. Louis to Madrid flight tickets

United Airlines flights from St. Louis to Madrid

Our best United 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 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

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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