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Cheap flights from St. Louis to Madrid from $376

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 4/13. 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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0 bags

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Find the cheapest flights from St. Louis to Madrid

Cheap round-trip flights

Enter your travel dates to find the best prices.
British Airways Logo
7:46 pm - 9:05 am
STL
-
MAD
30h 19m
1 stop
British Airways Logo
1:35 pm - 8:03 pm
MAD
-
STL
13h 28m
1 stop
$567British Airways
Sat, Aug 15 - Sat, Sep 12
British Airways Logo
1:29 pm - 9:35 am
STL
-
MAD
13h 06m
1 stop
British Airways Logo
12:10 pm - 7:30 pm
MAD
-
STL
14h 20m
1 stop
$573British Airways
Wed, Apr 22 - Wed, Apr 29
British Airways Logo
7:46 pm - 9:05 am
STL
-
MAD
30h 19m
1 stop
British Airways Logo
3:25 pm - 11:38 pm
MAD
-
STL
15h 13m
1 stop
$587British Airways
Sat, Aug 15 - Sat, Sep 12
United Airlines Logo
5:32 pm - 8:50 am
STL
-
MAD
32h 18m
2 stops
United Airlines Logo
5:55 am - 6:16 pm
MAD
-
STL
19h 21m
2 stops
$590United Airlines
Sat, Aug 15 - Sat, Sep 12
United Airlines Logo
5:32 pm - 8:50 am
STL
-
MAD
32h 18m
2 stops
United Airlines Logo
5:55 am - 9:22 pm
MAD
-
STL
22h 27m
2 stops
$591United Airlines
Sat, Aug 15 - Sat, Sep 12
United Airlines Logo
8:30 am - 11:50 am
STL
-
MAD
20h 20m
2 stops
United Airlines Logo
10:50 am - 9:08 pm
MAD
-
STL
17h 18m
2 stops
$599United Airlines
Wed, Apr 22 - Wed, Apr 29
British Airways Logo
5:21 pm - 5:35 pm
STL
-
MAD
17h 14m
2 stops
British Airways Logo
12:10 pm - 7:30 pm
MAD
-
STL
14h 20m
1 stop
$613British Airways
Wed, Apr 22 - Wed, Apr 29
United Airlines Logo
6:15 am - 6:50 am
STL
-
MAD
17h 35m
2 stops
United Airlines Logo
1:30 pm - 4:26 pm
MAD
-
STL
33h 56m
2 stops
$615United Airlines
Wed, Aug 19 - Wed, Aug 26
United Airlines Logo
2:40 pm - 9:50 am
STL
-
MAD
12h 10m
1 stop
United Airlines Logo
1:30 pm - 4:26 pm
MAD
-
STL
33h 56m
2 stops
$616United Airlines
Wed, Aug 19 - Wed, Aug 26
British Airways Logo
3:33 pm - 9:05 am
STL
-
MAD
34h 32m
1 stop
British Airways Logo
9:00 pm - 11:38 pm
MAD
-
STL
33h 38m
2 stops
$622British Airways
Sat, Aug 15 - Sat, Sep 12

American Airlines flights from St. Louis to Madrid

Our best American Airlines deals on St. Louis to Madrid flight tickets
American Airlines
Apr 12
STL8:03 pmLambert-St Louis
10h 27m
1 stop
MAD1:30 pmMadrid Barajas
Apr 20
MAD12:20 pmMadrid Barajas
17h 04m
1 stop
STL10:24 pmLambert-St Louis
$626
American Airlines
Apr 23
STL11:45 amLambert-St Louis
12h 05m
1 stop
MAD6:50 amMadrid Barajas
May 7
MAD12:20 pmMadrid Barajas
17h 39m
1 stop
STL10:59 pmLambert-St Louis
$714
American Airlines
Jul 30
STL9:46 amLambert-St Louis
14h 04m
1 stop
MAD6:50 amMadrid Barajas
Aug 31
MAD1:35 pmMadrid Barajas
17h 16m
1 stop
STL11:51 pmLambert-St Louis
$717

United Airlines flights from St. Louis to Madrid

Our best United Airlines deals on St. Louis to Madrid flight tickets
United Airlines
Aug 15
STL5:32 pmLambert-St Louis
32h 18m
2 stops
MAD8:50 amMadrid Barajas
Sep 12
MAD5:55 amMadrid Barajas
19h 21m
2 stops
STL6:16 pmLambert-St Louis
$590
United Airlines
Aug 15
STL5:32 pmLambert-St Louis
32h 18m
2 stops
MAD8:50 amMadrid Barajas
Sep 12
MAD5:55 amMadrid Barajas
22h 27m
2 stops
STL9:22 pmLambert-St Louis
$591
United Airlines
Apr 22
STL8:30 amLambert-St Louis
20h 20m
2 stops
MAD11:50 amMadrid Barajas
Apr 29
MAD10:50 amMadrid Barajas
17h 18m
2 stops
STL9:08 pmLambert-St Louis
$599

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Madrid that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated March 1, 2026.
Use the filters below to find and compare flights from St. Louis to Madrid that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Sat 8/15

7:46 pm-9:05 am

1 stop30h 19m

Madrid Barajas

Sat 9/12

1:35 pm-8:03 pm

1 stop13h 28m

$567

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 4/22

1:29 pm-9:35 am

1 stop13h 06m

Madrid Barajas

Wed 4/29

12:10 pm-7:30 pm

1 stop14h 20m

$573

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Sat 8/15

7:46 pm-9:05 am

1 stop30h 19m

Madrid Barajas

Sat 9/12

3:25 pm-11:38 pm

1 stop15h 13m

$587

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

5:55 am-6:16 pm

2 stops19h 21m

$590

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

5:55 am-9:22 pm

2 stops22h 27m

$591

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 4/22

8:30 am-11:50 am

2 stops20h 20m

Madrid Barajas

Wed 4/29

10:50 am-9:08 pm

2 stops17h 18m

$599

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 4/22

5:21 pm-5:35 pm

2 stops17h 14m

Madrid Barajas

Wed 4/29

12:10 pm-7:30 pm

1 stop14h 20m

$613

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 8/19

6:15 am-6:50 am

2 stops17h 35m

Madrid Barajas

Wed 8/26

1:30 pm-4:26 pm

2 stops33h 56m

$615

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 8/19

2:40 pm-9:50 am

1 stop12h 10m

Madrid Barajas

Wed 8/26

1:30 pm-4:26 pm

2 stops33h 56m

$616

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Sat 8/15

3:33 pm-9:05 am

1 stop34h 32m

Madrid Barajas

Sat 9/12

9:00 pm-11:38 pm

2 stops33h 38m

$622

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Madrid from

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 $608. If you don’t want to visit Madrid in November, then you should wait until December to fly from St. Louis, when ticket prices are also cheap, with an average price of $666.

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 $826 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 $727 on momondo.

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

You could potentially save up to 45% 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 50m

Direct flights

None
The fastest flight from St. Louis to Madrid takes 10h 50m
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. 10h 50m 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?

  • 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?

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
LufthansaPriceFrom $482Free CancellationRating
6.8
7,820 reviews
Search Lufthansa flights
British AirwaysPriceFrom $516Free CancellationRating
6.7
7,773 reviews
Search British Airways flights
IberiaPriceFrom $568Free CancellationRating
7.0
3,127 reviews
Search Iberia flights
United AirlinesPriceFrom $578Free CancellationRating
7.4
9,372 reviews
Search United Airlines flights
DeltaPriceFrom $580Free CancellationRating
7.9
8,239 reviews
Search Delta flights
American AirlinesPriceFrom $582Free CancellationRating
7.1
11,373 reviews
Search American Airlines flights
Air CanadaPriceFrom $701Free CancellationRating
7.1
10,762 reviews
Search Air Canada flights

Traveling to a place near Madrid?

Book flights to Madrid if you plan to visit one of these locations
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.

An easier way to manage your Madrid trip

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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
Iberia
American Airlines
British Airways
United Airlines
Air Canada
Delta
Lufthansa