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Cheap flights from St. Louis to Madrid from $324

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 3/2. 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
9:55 am - 9:15 am
STL
-
MAD
16h 20m
2 stops
United Airlines Logo
1:35 pm - 2:42 pm
MAD
-
STL
32h 07m
2 stops
$474United Airlines
Wed, Feb 25 - Wed, Mar 4
British Airways Logo
6:18 pm - 6:30 pm
STL
-
MAD
17h 12m
2 stops
British Airways Logo
12:40 pm - 11:22 pm
MAD
-
STL
17h 42m
1 stop
$477British Airways
Wed, Feb 25 - Wed, Mar 4
Delta Logo
7:10 am - 8:00 am
STL
-
MAD
17h 50m
2 stops
Delta Logo
9:00 am - 8:42 pm
MAD
-
STL
17h 42m
2 stops
$483Delta
Thu, Feb 26 - Wed, Mar 11
KLM Logo
6:00 am - 9:15 am
STL
-
MAD
20h 15m
1 stop
KLM Logo
10:05 am - 9:05 am
MAD
-
STL
29h 00m
1 stop
$485KLM
Thu, Feb 26 - Wed, Mar 11
United Airlines Logo
7:41 am - 9:15 am
STL
-
MAD
18h 34m
2 stops
United Airlines Logo
5:55 am - 1:55 pm
MAD
-
STL
15h 00m
1 stop
$486United Airlines
Wed, Feb 25 - Sun, Mar 1
British Airways Logo
2:00 pm - 8:55 am
STL
-
MAD
11h 55m
1 stop
British Airways Logo
1:15 pm - 11:04 pm
MAD
-
STL
16h 49m
1 stop
$487British Airways
Wed, Feb 25 - Wed, Mar 4
KLM Logo
6:00 am - 9:15 am
STL
-
MAD
20h 15m
1 stop
KLM Logo
6:00 am - 5:53 pm
MAD
-
STL
17h 53m
2 stops
$489KLM
Thu, Feb 26 - Wed, Mar 11
Delta Logo
6:35 am - 8:00 am
STL
-
MAD
18h 25m
2 stops
Delta Logo
9:00 am - 8:42 pm
MAD
-
STL
17h 42m
2 stops
$494Delta
Mon, Mar 2 - Mon, Mar 9
Delta Logo
7:03 am - 8:05 am
STL
-
MAD
19h 02m
1 stop
Delta Logo
12:35 pm - 8:44 am
MAD
-
STL
26h 09m
2 stops
$495Delta
Tue, Mar 10 - Tue, Mar 24
British Airways Logo
6:36 pm - 8:50 am
STL
-
MAD
31h 14m
1 stop
British Airways Logo
1:00 pm - 9:11 pm
MAD
-
STL
14h 11m
1 stop
$520British Airways
Fri, Feb 27 - Mon, Mar 9

Lufthansa flights from St. Louis to Madrid

Our best Lufthansa deals on St. Louis to Madrid flight tickets
Lufthansa
Apr 1
STL3:30 pmLambert-St Louis
18h 10m
1 stop
MAD4:40 pmMadrid Barajas
Apr 9
MAD8:25 amMadrid Barajas
21h 31m
2 stops
STL10:56 pmLambert-St Louis
$607
Lufthansa
Apr 8
STL3:30 pmLambert-St Louis
13h 40m
1 stop
MAD12:10 pmMadrid Barajas
Apr 13
MAD6:25 pmMadrid Barajas
33h 43m
2 stops
STL9:08 pmLambert-St Louis
$614
Lufthansa
Apr 1
STL3:30 pmLambert-St Louis
19h 10m
2 stops
MAD5:40 pmMadrid Barajas
Apr 9
MAD8:25 amMadrid Barajas
21h 31m
2 stops
STL10:56 pmLambert-St Louis
$662

Iberia flights from St. Louis to Madrid

Our best Iberia deals on St. Louis to Madrid flight tickets
Iberia
May 4
STL6:11 pmLambert-St Louis
13h 14m
1 stop
MAD2:25 pmMadrid Barajas
May 8
MAD12:20 pmMadrid Barajas
17h 44m
1 stop
STL11:04 pmLambert-St Louis
$606
Iberia
Apr 1
STL9:35 amLambert-St Louis
21h 50m
1 stop
MAD2:25 pmMadrid Barajas
Apr 9
MAD11:35 amMadrid Barajas
19h 13m
1 stop
STL11:48 pmLambert-St Louis
$621
Iberia
May 4
STL6:11 pmLambert-St Louis
13h 14m
1 stop
MAD2:25 pmMadrid Barajas
Jun 1
MAD11:35 amMadrid Barajas
15h 51m
1 stop
STL8:26 pmLambert-St Louis
$654

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 January 29, 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 2/25

9:55 am-9:15 am

2 stops16h 20m

Madrid Barajas

Wed 3/4

1:35 pm-2:42 pm

2 stops32h 07m

$474

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 2/25

6:18 pm-6:30 pm

2 stops17h 12m

Madrid Barajas

Wed 3/4

12:40 pm-11:22 pm

1 stop17h 42m

$477

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Thu 2/26

7:10 am-8:00 am

2 stops17h 50m

Madrid Barajas

Wed 3/11

9:00 am-8:42 pm

2 stops17h 42m

$483

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Thu 2/26

6:00 am-9:15 am

1 stop20h 15m

Madrid Barajas

Wed 3/11

10:05 am-9:05 am

1 stop29h 00m

$485

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 2/25

7:41 am-9:15 am

2 stops18h 34m

Madrid Barajas

Sun 3/1

5:55 am-1:55 pm

1 stop15h 00m

$486

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 2/25

2:00 pm-8:55 am

1 stop11h 55m

Madrid Barajas

Wed 3/4

1:15 pm-11:04 pm

1 stop16h 49m

$487

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Thu 2/26

6:00 am-9:15 am

1 stop20h 15m

Madrid Barajas

Wed 3/11

6:00 am-5:53 pm

2 stops17h 53m

$489

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Mon 3/2

6:35 am-8:00 am

2 stops18h 25m

Madrid Barajas

Mon 3/9

9:00 am-8:42 pm

2 stops17h 42m

$494

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Tue 3/10

7:03 am-8:05 am

1 stop19h 02m

Madrid Barajas

Tue 3/24

12:35 pm-8:44 am

2 stops26h 09m

$495

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Fri 2/27

6:36 pm-8:50 am

1 stop31h 14m

Madrid Barajas

Mon 3/9

1:00 pm-9:11 pm

1 stop14h 11m

$520

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 $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 $847 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 34% 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
7,756 reviews
Search Lufthansa flights
British AirwaysPriceFrom $516Free CancellationRating
6.7
7,705 reviews
Search British Airways flights
United AirlinesPriceFrom $578Free CancellationRating
7.4
9,215 reviews
Search United Airlines flights
IberiaPriceFrom $580Free CancellationRating
7.0
3,100 reviews
Search Iberia flights
DeltaPriceFrom $580Free CancellationRating
7.9
8,127 reviews
Search Delta flights
American AirlinesPriceFrom $585Free CancellationRating
7.2
11,206 reviews
Search American Airlines flights
Air CanadaPriceFrom $701Free CancellationRating
7.1
10,667 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