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Cheap flights from St. Louis to Madrid from $327

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 8/19. 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
9:35 pm - 8:05 pm
STL
-
MAD
15h 30m
1 stop
British Airways Logo
10:35 am - 7:30 pm
MAD
-
STL
15h 55m
1 stop
$720British Airways
Wed, Oct 7 - Wed, Oct 21
British Airways Logo
9:35 pm - 5:30 pm
STL
-
MAD
12h 55m
1 stop
British Airways Logo
3:55 pm - 11:41 pm
MAD
-
STL
14h 46m
1 stop
$728British Airways
Tue, Sep 29 - Fri, Oct 9
Iberia Logo
6:51 pm - 2:25 pm
STL
-
MAD
12h 34m
1 stop
Iberia Logo
1:35 pm - 8:03 pm
MAD
-
STL
13h 28m
1 stop
$732Iberia
Wed, Sep 23 - Tue, Sep 29
British Airways Logo
8:05 pm - 1:30 pm
STL
-
MAD
10h 25m
1 stop
British Airways Logo
12:40 pm - 7:02 pm
MAD
-
STL
13h 22m
1 stop
$736British Airways
Wed, Oct 7 - Wed, Oct 21
Air Canada Logo
12:10 pm - 6:50 am
STL
-
MAD
11h 40m
1 stop
Air Canada Logo
1:35 pm - 3:38 pm
MAD
-
STL
33h 03m
2 stops
$742Air Canada
Wed, Aug 19 - Thu, Dec 24
United Airlines Logo
7:30 am - 9:00 am
STL
-
MAD
18h 30m
1 stop
United Airlines Logo
12:45 pm - 2:11 pm
MAD
-
STL
32h 26m
2 stops
$744United Airlines
Wed, Oct 7 - Wed, Oct 21
Air Canada Logo
8:00 am - 6:50 am
STL
-
MAD
15h 50m
2 stops
Air Canada Logo
1:35 pm - 7:25 pm
MAD
-
STL
36h 50m
2 stops
$747Air Canada
Wed, Aug 19 - Fri, Dec 25
United Airlines Logo
6:00 am - 8:05 am
STL
-
MAD
19h 05m
2 stops
United Airlines Logo
12:45 pm - 2:11 pm
MAD
-
STL
32h 26m
2 stops
$748United Airlines
Wed, Oct 7 - Wed, Oct 21
British Airways Logo
10:22 am - 5:30 am
STL
-
MAD
12h 08m
1 stop
British Airways Logo
12:40 pm - 7:30 pm
MAD
-
STL
13h 50m
1 stop
$751British Airways
Wed, Aug 19 - Tue, Dec 22
Air Canada Logo
2:40 pm - 9:50 am
STL
-
MAD
12h 10m
1 stop
Air Canada Logo
1:30 pm - 12:13 pm
MAD
-
STL
29h 43m
2 stops
$752Air Canada
Wed, Sep 23 - Tue, Sep 29

Iberia flights from St. Louis to Madrid

Our best Iberia deals on St. Louis to Madrid flight tickets
Iberia
Sep 23
STL6:51 pmLambert-St Louis
12h 34m
1 stop
MAD2:25 pmMadrid Barajas
Sep 29
MAD1:35 pmMadrid Barajas
13h 28m
1 stop
STL8:03 pmLambert-St Louis
$732
Iberia
Oct 5
STL6:51 pmLambert-St Louis
12h 34m
1 stop
MAD2:25 pmMadrid Barajas
Oct 19
MAD9:35 pmMadrid Barajas
28h 55m
2 stops
STL7:30 pmLambert-St Louis
$754
Iberia
Sep 20
STL6:51 pmLambert-St Louis
12h 34m
1 stop
MAD2:25 pmMadrid Barajas
Sep 30
MAD7:30 amMadrid Barajas
20h 53m
2 stops
STL9:23 pmLambert-St Louis
$757

Air Canada flights from St. Louis to Madrid

Our best Air Canada deals on St. Louis to Madrid flight tickets
Air Canada
Aug 19
STL12:10 pmLambert-St Louis
11h 40m
1 stop
MAD6:50 amMadrid Barajas
Dec 24
MAD1:35 pmMadrid Barajas
33h 03m
2 stops
STL3:38 pmLambert-St Louis
$742
Air Canada
Aug 19
STL8:00 amLambert-St Louis
15h 50m
2 stops
MAD6:50 amMadrid Barajas
Dec 25
MAD1:35 pmMadrid Barajas
36h 50m
2 stops
STL7:25 pmLambert-St Louis
$747
Air Canada
Sep 23
STL2:40 pmLambert-St Louis
12h 10m
1 stop
MAD9:50 amMadrid Barajas
Sep 29
MAD1:30 pmMadrid Barajas
29h 43m
2 stops
STL12:13 pmLambert-St Louis
$752

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 May 22, 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

Wed 10/7

9:35 pm-8:05 pm

1 stop15h 30m

Madrid Barajas

Wed 10/21

10:35 am-7:30 pm

1 stop15h 55m

$720

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Tue 9/29

9:35 pm-5:30 pm

1 stop12h 55m

Madrid Barajas

Fri 10/9

3:55 pm-11:41 pm

1 stop14h 46m

$728

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 9/23

6:51 pm-2:25 pm

1 stop12h 34m

Madrid Barajas

Tue 9/29

1:35 pm-8:03 pm

1 stop13h 28m

$732
Quickest round-trip

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 10/7

8:05 pm-1:30 pm

1 stop10h 25m

Madrid Barajas

Wed 10/21

12:40 pm-7:02 pm

1 stop13h 22m

$736

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 8/19

12:10 pm-6:50 am

1 stop11h 40m

Madrid Barajas

Thu 12/24

1:35 pm-3:38 pm

2 stops33h 03m

$742

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 10/7

7:30 am-9:00 am

1 stop18h 30m

Madrid Barajas

Wed 10/21

12:45 pm-2:11 pm

2 stops32h 26m

$744

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 8/19

8:00 am-6:50 am

2 stops15h 50m

Madrid Barajas

Fri 12/25

1:35 pm-7:25 pm

2 stops36h 50m

$747

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 10/7

6:00 am-8:05 am

2 stops19h 05m

Madrid Barajas

Wed 10/21

12:45 pm-2:11 pm

2 stops32h 26m

$748

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 8/19

10:22 am-5:30 am

1 stop12h 08m

Madrid Barajas

Tue 12/22

12:40 pm-7:30 pm

1 stop13h 50m

$751

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 9/23

2:40 pm-9:50 am

1 stop12h 10m

Madrid Barajas

Tue 9/29

1:30 pm-12:13 pm

2 stops29h 43m

$752

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 February is, on average, the cheapest month to fly to Madrid from St. Louis, with most prices found around $636. If you don’t want to visit Madrid in February, 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 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 $816 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 $678 on momondo.

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

You could potentially save up to 12% 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 12m

Direct flights

None
The fastest flight from St. Louis to Madrid takes 11h 12m
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. 11h 12m 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
8,019 reviews
Search Lufthansa flights
DeltaPriceFrom $489Free CancellationRating
7.9
8,445 reviews
Search Delta flights
British AirwaysPriceFrom $516Free CancellationRating
6.7
7,995 reviews
Search British Airways flights
IberiaPriceFrom $568Free CancellationRating
7.0
3,220 reviews
Search Iberia flights
United AirlinesPriceFrom $578Free CancellationRating
7.4
9,752 reviews
Search United Airlines flights
American AirlinesPriceFrom $582Free CancellationRating
7.1
11,647 reviews
Search American Airlines flights

Traveling to a place near Madrid?

Book flights to Madrid if you plan to visit one of these locations
Toledo
Segovia
Getafe
Fuenlabrada
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
Delta
Lufthansa