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Cheap flights from St. Louis to Madrid from $319

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 3/24. 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
5:21 pm - 8:05 pm
STL
-
MAD
19h 44m
2 stops
British Airways Logo
1:35 pm - 11:46 pm
MAD
-
STL
17h 11m
1 stop
$478British Airways
Wed, Apr 22 - Wed, Apr 29
United Airlines Logo
8:00 am - 4:45 pm
STL
-
MAD
25h 45m
2 stops
United Airlines Logo
12:45 pm - 1:23 pm
MAD
-
STL
31h 38m
2 stops
$480United Airlines
Wed, Apr 22 - Wed, Apr 29
Multiple Airlines Logo
8:54 am - 8:20 am
STL
-
MAD
16h 26m
1 stop
Multiple Airlines Logo
12:30 pm - 7:59 pm
MAD
-
STL
14h 29m
1 stop
$483Multiple Airlines
Sun, Apr 12 - Tue, Apr 28
Iberia Logo
8:03 pm - 8:20 am
STL
-
MAD
29h 17m
1 stop
Iberia Logo
1:35 pm - 10:17 pm
MAD
-
STL
15h 42m
1 stop
$490Iberia
Mon, Apr 20 - Thu, Apr 30
Delta Logo
9:42 am - 9:55 am
STL
-
MAD
17h 13m
1 stop
Delta Logo
12:45 pm - 11:36 pm
MAD
-
STL
17h 51m
1 stop
$491Delta
Sun, Apr 12 - Tue, Apr 21
United Airlines Logo
6:30 am - 6:50 am
STL
-
MAD
17h 20m
2 stops
United Airlines Logo
6:05 am - 10:45 pm
MAD
-
STL
23h 40m
2 stops
$495United Airlines
Sun, Apr 19 - Thu, Apr 30
Delta Logo
10:50 am - 9:55 am
STL
-
MAD
16h 05m
2 stops
Delta Logo
12:45 pm - 11:36 pm
MAD
-
STL
17h 51m
1 stop
$496Delta
Mon, Apr 13 - Thu, Apr 23
British Airways Logo
6:11 pm - 9:05 am
STL
-
MAD
31h 54m
1 stop
British Airways Logo
5:30 pm - 7:29 pm
MAD
-
STL
32h 59m
2 stops
$499British Airways
Tue, Apr 7 - Tue, Apr 21
United Airlines Logo
6:35 pm - 4:45 pm
STL
-
MAD
39h 10m
2 stops
United Airlines Logo
5:55 am - 6:28 pm
MAD
-
STL
19h 33m
2 stops
$501United Airlines
Tue, Apr 7 - Tue, Apr 21
Iberia Logo
12:55 pm - 1:30 pm
STL
-
MAD
17h 35m
1 stop
Iberia Logo
5:30 pm - 7:30 pm
MAD
-
STL
33h 00m
1 stop
$516Iberia
Wed, Apr 15 - Mon, Apr 20

British Airways flights from St. Louis to Madrid

Our best British Airways deals on St. Louis to Madrid flight tickets
British Airways
Apr 22
STL5:21 pmLambert-St Louis
19h 44m
2 stops
MAD8:05 pmMadrid Barajas
Apr 29
MAD1:35 pmMadrid Barajas
17h 11m
1 stop
STL11:46 pmLambert-St Louis
$478
British Airways
Apr 7
STL6:11 pmLambert-St Louis
31h 54m
1 stop
MAD9:05 amMadrid Barajas
Apr 21
MAD5:30 pmMadrid Barajas
32h 59m
2 stops
STL7:29 pmLambert-St Louis
$499
British Airways
Apr 22
STL11:45 amLambert-St Louis
21h 05m
2 stops
MAD3:50 pmMadrid Barajas
Apr 29
MAD1:35 pmMadrid Barajas
17h 11m
1 stop
STL11:46 pmLambert-St Louis
$521

Iberia flights from St. Louis to Madrid

Our best Iberia deals on St. Louis to Madrid flight tickets
Iberia
Apr 20
STL8:03 pmLambert-St Louis
29h 17m
1 stop
MAD8:20 amMadrid Barajas
Apr 30
MAD1:35 pmMadrid Barajas
15h 42m
1 stop
STL10:17 pmLambert-St Louis
$490
Iberia
Apr 15
STL12:55 pmLambert-St Louis
17h 35m
1 stop
MAD1:30 pmMadrid Barajas
Apr 20
MAD5:30 pmMadrid Barajas
33h 00m
1 stop
STL7:30 pmLambert-St Louis
$516
Iberia
Apr 14
STL12:25 pmLambert-St Louis
12h 55m
1 stop
MAD8:20 amMadrid Barajas
Apr 19
MAD11:45 amMadrid Barajas
17h 32m
1 stop
STL10:17 pmLambert-St Louis
$533

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 February 18, 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

Wed 4/22

5:21 pm-8:05 pm

2 stops19h 44m

Madrid Barajas

Wed 4/29

1:35 pm-11:46 pm

1 stop17h 11m

$478

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 4/22

8:00 am-4:45 pm

2 stops25h 45m

Madrid Barajas

Wed 4/29

12:45 pm-1:23 pm

2 stops31h 38m

$480

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Sun 4/12

8:54 am-8:20 am

1 stop16h 26m

Madrid Barajas

Tue 4/28

12:30 pm-7:59 pm

1 stop14h 29m

$483

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Mon 4/20

8:03 pm-8:20 am

1 stop29h 17m

Madrid Barajas

Thu 4/30

1:35 pm-10:17 pm

1 stop15h 42m

$490

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Sun 4/12

9:42 am-9:55 am

1 stop17h 13m

Madrid Barajas

Tue 4/21

12:45 pm-11:36 pm

1 stop17h 51m

$491

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Sun 4/19

6:30 am-6:50 am

2 stops17h 20m

Madrid Barajas

Thu 4/30

6:05 am-10:45 pm

2 stops23h 40m

$495

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Mon 4/13

10:50 am-9:55 am

2 stops16h 05m

Madrid Barajas

Thu 4/23

12:45 pm-11:36 pm

1 stop17h 51m

$496

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Tue 4/7

6:11 pm-9:05 am

1 stop31h 54m

Madrid Barajas

Tue 4/21

5:30 pm-7:29 pm

2 stops32h 59m

$499

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Tue 4/7

6:35 pm-4:45 pm

2 stops39h 10m

Madrid Barajas

Tue 4/21

5:55 am-6:28 pm

2 stops19h 33m

$501

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 4/15

12:55 pm-1:30 pm

1 stop17h 35m

Madrid Barajas

Mon 4/20

5:30 pm-7:30 pm

1 stop33h 00m

$516

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 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 $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 $828 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 $589 on momondo.

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

You could potentially save up to 50% 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

15h 13m

Direct flights

None
The fastest flight from St. Louis to Madrid takes 15h 13m
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. 15h 13m 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
7,790 reviews
Search Lufthansa flights
British AirwaysPriceFrom $516Free CancellationRating
6.7
7,752 reviews
Search British Airways flights
IberiaPriceFrom $568Free CancellationRating
7.0
3,117 reviews
Search Iberia flights
United AirlinesPriceFrom $578Free CancellationRating
7.4
9,318 reviews
Search United Airlines flights
DeltaPriceFrom $580Free CancellationRating
7.9
8,209 reviews
Search Delta flights
American AirlinesPriceFrom $585Free CancellationRating
7.2
11,310 reviews
Search American Airlines flights
Air CanadaPriceFrom $701Free CancellationRating
7.1
10,733 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
Iberia
British Airways
United Airlines
Air Canada
Delta
Lufthansa