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Cheap flights from St. Louis to Madrid from $296

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 2/2. 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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Find the cheapest flights from St. Louis to Madrid

Cheap round-trip flights

Enter your travel dates to find the best prices.
KLM Logo
1:30 pm - 8:05 amSTL-MAD
12h 35m1 stop
KLM Logo
10:00 am - 4:33 pmMAD-STL
13h 33m1 stop
$431KLM
Find Deal
Mon, Oct 27 - Wed, Nov 12
Delta Logo
9:50 am - 8:00 amSTL-MAD
15h 10m1 stop
Delta Logo
11:15 am - 6:37 pmMAD-STL
14h 22m1 stop
$438Delta
Find Deal
Tue, Dec 2 - Tue, Dec 9
United Airlines Logo
1:10 pm - 8:05 amSTL-MAD
11h 55m1 stop
United Airlines Logo
1:35 pm - 2:23 pmMAD-STL
31h 48m2 stops
$465United Airlines
Find Deal
Sun, Nov 30 - Thu, Dec 11
Iberia Logo
7:15 am - 6:15 amSTL-MAD
16h 00m1 stop
Iberia Logo
1:15 pm - 10:44 pmMAD-STL
16h 29m1 stop
$474Iberia
Find Deal
Tue, Jan 13 - Wed, Jan 21
United Airlines Logo
1:10 pm - 8:05 amSTL-MAD
11h 55m1 stop
United Airlines Logo
5:55 am - 1:55 pmMAD-STL
15h 00m1 stop
$477United Airlines
Find Deal
Sun, Nov 30 - Wed, Dec 10
British Airways Logo
6:46 pm - 4:55 pmSTL-MAD
15h 09m2 stops
British Airways Logo
1:15 pm - 10:44 pmMAD-STL
16h 29m1 stop
$485British Airways
Find Deal
Tue, Jan 13 - Wed, Jan 21
American Airlines Logo
6:52 am - 5:45 amSTL-MAD
15h 53m1 stop
American Airlines Logo
11:35 am - 11:38 pmMAD-STL
19h 03m1 stop
$521American Airlines
Find Deal
Wed, Dec 3 - Mon, Dec 8
Iberia Logo
7:15 am - 6:15 amSTL-MAD
16h 00m1 stop
Iberia Logo
1:15 pm - 10:44 pmMAD-STL
16h 29m1 stop
$532Iberia
Find Deal
Thu, Jan 8 - Sun, Jan 18
British Airways Logo
2:54 pm - 2:15 pmSTL-MAD
16h 21m2 stops
British Airways Logo
1:15 pm - 10:44 pmMAD-STL
16h 29m1 stop
$534British Airways
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Thu, Jan 8 - Sun, Jan 18
American Airlines Logo
9:12 am - 5:45 amSTL-MAD
13h 33m1 stop
American Airlines Logo
12:55 am - 8:50 amMAD-STL
14h 55m1 stop
$537American Airlines
Find Deal
Sat, Nov 29 - Sat, Dec 6

British Airways flights from St. Louis to Madrid

Our best British Airways deals on St. Louis to Madrid flight tickets
British Airways
Jan 13
STL6:46 pmLambert-St Louis
15h 09m
2 stops
MAD4:55 pmMadrid Barajas
Jan 21
MAD1:15 pmMadrid Barajas
16h 29m
1 stop
STL10:44 pmLambert-St Louis
$485
Find similar
British Airways
Jan 8
STL2:54 pmLambert-St Louis
16h 21m
2 stops
MAD2:15 pmMadrid Barajas
Jan 18
MAD1:15 pmMadrid Barajas
16h 29m
1 stop
STL10:44 pmLambert-St Louis
$534
Find similar
British Airways
Nov 30
STL11:30 amLambert-St Louis
18h 10m
2 stops
MAD12:40 pmMadrid Barajas
Dec 6
MAD12:55 amMadrid Barajas
23h 10m
1 stop
STL5:05 pmLambert-St Louis
$540
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Delta flights from St. Louis to Madrid

Our best Delta deals on St. Louis to Madrid flight tickets
Delta
Dec 2
STL9:50 amLambert-St Louis
15h 10m
1 stop
MAD8:00 amMadrid Barajas
Dec 9
MAD11:15 amMadrid Barajas
14h 22m
1 stop
STL6:37 pmLambert-St Louis
$438
Find similar
Delta
Dec 3
STL6:39 amLambert-St Louis
18h 21m
2 stops
MAD8:00 amMadrid Barajas
Dec 12
MAD10:00 amMadrid Barajas
20h 29m
2 stops
STL11:29 pmLambert-St Louis
$443
Find similar
Delta
Jan 13
STL1:00 pmLambert-St Louis
21h 40m
2 stops
MAD5:40 pmMadrid Barajas
Jan 21
MAD10:00 amMadrid Barajas
31h 50m
2 stops
STL10:50 amLambert-St Louis
$461
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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 October 16, 2025.
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

Mon 10/27

1:30 pm-8:05 am

1 stop12h 35m

Madrid Barajas

Wed 11/12

10:00 am-4:33 pm

1 stop13h 33m

$431

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Tue 12/2

9:50 am-8:00 am

1 stop15h 10m

Madrid Barajas

Tue 12/9

11:15 am-6:37 pm

1 stop14h 22m

$438

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Sun 11/30

1:10 pm-8:05 am

1 stop11h 55m

Madrid Barajas

Thu 12/11

1:35 pm-2:23 pm

2 stops31h 48m

$465

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Tue 1/13

7:15 am-6:15 am

1 stop16h 00m

Madrid Barajas

Wed 1/21

1:15 pm-10:44 pm

1 stop16h 29m

$474

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Sun 11/30

1:10 pm-8:05 am

1 stop11h 55m

Madrid Barajas

Wed 12/10

5:55 am-1:55 pm

1 stop15h 00m

$477

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Tue 1/13

6:46 pm-4:55 pm

2 stops15h 09m

Madrid Barajas

Wed 1/21

1:15 pm-10:44 pm

1 stop16h 29m

$485

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 12/3

6:52 am-5:45 am

1 stop15h 53m

Madrid Barajas

Mon 12/8

11:35 am-11:38 pm

1 stop19h 03m

$521

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Thu 1/8

7:15 am-6:15 am

1 stop16h 00m

Madrid Barajas

Sun 1/18

1:15 pm-10:44 pm

1 stop16h 29m

$532

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Thu 1/8

2:54 pm-2:15 pm

2 stops16h 21m

Madrid Barajas

Sun 1/18

1:15 pm-10:44 pm

1 stop16h 29m

$534

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Sat 11/29

9:12 am-5:45 am

1 stop13h 33m

Madrid Barajas

Sat 12/6

12:55 am-8:50 am

1 stop14h 55m

$537

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 $624. 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 $720.

What is the cheapest day to depart on your flight to Madrid?

The cheapest day to depart on your flight to Madrid is on a Tuesday when prices can be found for as low as $743. This is often the case because there is less demand to fly during this day of the week. Be sure to avoid booking your departure on a Monday as prices are generally higher than usual. According to our data, the average ticket price to Madrid on Monday is $1,028.

What is the cheapest time of day to depart on your flight to Madrid?

Flying to Madrid from St. Louis at noon is the least expensive time of day to depart. momondo users have found prices as low as $809 when looking at flights departing at noon. Flights to Madrid are more costly in the morning, with an average ticket price of $983. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

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 $915 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 $636 on momondo.

How have St. Louis to Madrid flight prices changed over time?

As of October 2025, prices for St. Louis to Madrid flights are approximately 32% cheaper when compared to flights at the same time last year.

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

Direct flights

None
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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  • 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 55m 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 $524Free CancellationRating
6.8
7,491 reviews
Search Lufthansa flights
British AirwaysPriceFrom $546Free CancellationRating
6.7
7,456 reviews
Search British Airways flights
United AirlinesPriceFrom $578Free CancellationRating
7.4
8,979 reviews
Search United Airlines flights
IberiaPriceFrom $586Free CancellationRating
7.0
2,991 reviews
Search Iberia flights
DeltaPriceFrom $589Free CancellationRating
7.9
7,979 reviews
Search Delta flights
American AirlinesPriceFrom $634Free CancellationRating
7.2
11,041 reviews
Search American Airlines flights
Air CanadaPriceFrom $701Free CancellationRating
7.1
10,304 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
Getafe
Fuenlabrada
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
Delta
American Airlines
United Airlines
Turkish Airlines
Lufthansa
Frontier
British Airways
Qatar Airways
Spirit Airlines
Ryanair
Alaska Airlines
Emirates