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Cheap flights from St. Louis to Madrid from $427

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 4/11. 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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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.
United Airlines Logo
12:30 pm - 9:00 am
STL
-
MAD
13h 30m
1 stop
United Airlines Logo
12:45 pm - 4:26 pm
MAD
-
STL
34h 41m
2 stops
$715United Airlines
Tue, Sep 22 - Wed, Sep 30
United Airlines Logo
12:30 pm - 9:00 am
STL
-
MAD
13h 30m
1 stop
United Airlines Logo
1:30 pm - 4:26 pm
MAD
-
STL
33h 56m
2 stops
$720United Airlines
Tue, Sep 22 - Wed, Sep 30
British Airways Logo
9:35 pm - 8:05 pm
STL
-
MAD
15h 30m
1 stop
British Airways Logo
3:25 pm - 11:41 pm
MAD
-
STL
15h 16m
1 stop
$722British Airways
Tue, Sep 29 - Fri, Oct 9
United Airlines Logo
7:30 am - 9:00 am
STL
-
MAD
18h 30m
2 stops
United Airlines Logo
1:30 pm - 4:26 pm
MAD
-
STL
33h 56m
2 stops
$725United Airlines
Tue, Sep 22 - Wed, Sep 30
Multiple Airlines Logo
8:55 am - 8:50 am
STL
-
MAD
16h 55m
1 stop
Multiple Airlines Logo
6:00 am - 1:25 pm
MAD
-
STL
14h 25m
1 stop
$729Multiple Airlines
Sun, Aug 16 - Fri, Sep 11
British Airways Logo
7:01 am - 9:05 am
STL
-
MAD
19h 04m
1 stop
British Airways Logo
1:35 pm - 8:03 pm
MAD
-
STL
13h 28m
1 stop
$730British Airways
Tue, Sep 22 - Wed, Sep 30
British Airways Logo
8:07 pm - 1:30 pm
STL
-
MAD
10h 23m
1 stop
British Airways Logo
3:25 pm - 11:41 pm
MAD
-
STL
15h 16m
1 stop
$731British Airways
Wed, Sep 30 - Wed, Oct 14
United Airlines Logo
6:40 am - 4:45 pm
STL
-
MAD
27h 05m
2 stops
United Airlines Logo
5:55 am - 1:25 pm
MAD
-
STL
14h 30m
1 stop
$733United Airlines
Wed, Sep 30 - Wed, Oct 14
Scandinavian Airlines Logo
3:42 pm - 5:40 pm
STL
-
MAD
18h 58m
2 stops
Scandinavian Airlines Logo
7:45 pm - 11:37 pm
MAD
-
STL
34h 52m
2 stops
$734Scandinavian Airlines
Sun, Sep 6 - Thu, Sep 10
United Airlines Logo
5:32 pm - 8:50 am
STL
-
MAD
32h 18m
2 stops
United Airlines Logo
6:20 am - 4:26 pm
MAD
-
STL
17h 06m
2 stops
$740United Airlines
Sun, Sep 20 - Fri, Oct 2

British Airways flights from St. Louis to Madrid

Our best British Airways deals on St. Louis to Madrid flight tickets
British Airways
Sep 29
STL9:35 pmLambert-St Louis
15h 30m
1 stop
MAD8:05 pmMadrid Barajas
Oct 9
MAD3:25 pmMadrid Barajas
15h 16m
1 stop
STL11:41 pmLambert-St Louis
$722
British Airways
Sep 22
STL7:01 amLambert-St Louis
19h 04m
1 stop
MAD9:05 amMadrid Barajas
Sep 30
MAD1:35 pmMadrid Barajas
13h 28m
1 stop
STL8:03 pmLambert-St Louis
$730
British Airways
Sep 30
STL8:07 pmLambert-St Louis
10h 23m
1 stop
MAD1:30 pmMadrid Barajas
Oct 14
MAD3:25 pmMadrid Barajas
15h 16m
1 stop
STL11:41 pmLambert-St Louis
$731

United Airlines flights from St. Louis to Madrid

Our best United Airlines deals on St. Louis to Madrid flight tickets
United Airlines
Sep 22
STL12:30 pmLambert-St Louis
13h 30m
1 stop
MAD9:00 amMadrid Barajas
Sep 30
MAD12:45 pmMadrid Barajas
34h 41m
2 stops
STL4:26 pmLambert-St Louis
$715
United Airlines
Sep 22
STL12:30 pmLambert-St Louis
13h 30m
1 stop
MAD9:00 amMadrid Barajas
Sep 30
MAD1:30 pmMadrid Barajas
33h 56m
2 stops
STL4:26 pmLambert-St Louis
$720
United Airlines
Sep 22
STL7:30 amLambert-St Louis
18h 30m
2 stops
MAD9:00 amMadrid Barajas
Sep 30
MAD1:30 pmMadrid Barajas
33h 56m
2 stops
STL4:26 pmLambert-St Louis
$725

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 April 4, 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

Cheapest round-trip

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Tue 9/22

12:30 pm-9:00 am

1 stop13h 30m

Madrid Barajas

Wed 9/30

12:45 pm-4:26 pm

2 stops34h 41m

$715

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Tue 9/22

12:30 pm-9:00 am

1 stop13h 30m

Madrid Barajas

Wed 9/30

1:30 pm-4:26 pm

2 stops33h 56m

$720

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Tue 9/29

9:35 pm-8:05 pm

1 stop15h 30m

Madrid Barajas

Fri 10/9

3:25 pm-11:41 pm

1 stop15h 16m

$722

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Tue 9/22

7:30 am-9:00 am

2 stops18h 30m

Madrid Barajas

Wed 9/30

1:30 pm-4:26 pm

2 stops33h 56m

$725

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Sun 8/16

8:55 am-8:50 am

1 stop16h 55m

Madrid Barajas

Fri 9/11

6:00 am-1:25 pm

1 stop14h 25m

$729

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Tue 9/22

7:01 am-9:05 am

1 stop19h 04m

Madrid Barajas

Wed 9/30

1:35 pm-8:03 pm

1 stop13h 28m

$730
Quickest round-trip

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 9/30

8:07 pm-1:30 pm

1 stop10h 23m

Madrid Barajas

Wed 10/14

3:25 pm-11:41 pm

1 stop15h 16m

$731

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 9/30

6:40 am-4:45 pm

2 stops27h 05m

Madrid Barajas

Wed 10/14

5:55 am-1:25 pm

1 stop14h 30m

$733

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Sun 9/6

3:42 pm-5:40 pm

2 stops18h 58m

Madrid Barajas

Thu 9/10

7:45 pm-11:37 pm

2 stops34h 52m

$734

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Sun 9/20

5:32 pm-8:50 am

2 stops32h 18m

Madrid Barajas

Fri 10/2

6:20 am-4:26 pm

2 stops17h 06m

$740

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 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 $633. 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 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

11h 57m

Direct flights

None
The fastest flight from St. Louis to Madrid takes 11h 57m
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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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. 11h 57m 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
7,888 reviews
Search Lufthansa flights
DeltaPriceFrom $489Free CancellationRating
7.9
8,377 reviews
Search Delta flights
British AirwaysPriceFrom $516Free CancellationRating
6.7
7,847 reviews
Search British Airways flights
IberiaPriceFrom $552Free CancellationRating
7.0
3,163 reviews
Search Iberia flights
United AirlinesPriceFrom $578Free CancellationRating
7.4
9,542 reviews
Search United Airlines flights
American AirlinesPriceFrom $582Free CancellationRating
7.1
11,555 reviews
Search American Airlines flights
Air CanadaPriceFrom $750Free CancellationRating
7.1
10,889 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.

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Fly your favorite airline to Madrid

Airlines are sorted and displayed according to clicks in the past 7 days on momondo
American Airlines
British Airways
Iberia
United Airlines
Air Canada
Delta
Lufthansa