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Cheap flights from St. Louis to Madrid from $333

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 4/25. 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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Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
4:05 pm - 8:00 amSTL-MAD
32h 55m2 stops
Multiple Airlines Logo
6:00 am - 1:55 pmMAD-STL
14h 55m1 stop
$456Multiple Airlines
Find Deal
Sat, Jan 17 - Fri, Jan 30
Multiple Airlines Logo
4:05 pm - 8:00 amSTL-MAD
32h 55m2 stops
Multiple Airlines Logo
6:00 am - 1:55 pmMAD-STL
14h 55m1 stop
$458Multiple Airlines
Find Deal
Sat, Jan 17 - Fri, Jan 30
Air Canada Logo
4:05 pm - 8:00 amSTL-MAD
32h 55m2 stops
Air Canada Logo
1:35 pm - 3:29 pmMAD-STL
32h 54m2 stops
$461Air Canada
Find Deal
Sat, Jan 17 - Fri, Jan 30
Multiple Airlines Logo
4:05 pm - 8:00 amSTL-MAD
32h 55m2 stops
Multiple Airlines Logo
6:00 am - 1:55 pmMAD-STL
14h 55m1 stop
$466Multiple Airlines
Find Deal
Sat, Jan 17 - Fri, Jan 30
Air Canada Logo
4:05 pm - 8:00 amSTL-MAD
32h 55m2 stops
Air Canada Logo
1:35 pm - 3:29 pmMAD-STL
32h 54m2 stops
$468Air Canada
Find Deal
Sat, Jan 17 - Fri, Jan 30
United Airlines Logo
7:00 am - 9:15 amSTL-MAD
19h 15m1 stop
United Airlines Logo
6:00 am - 1:55 pmMAD-STL
14h 55m1 stop
$473United Airlines
Find Deal
Sat, Jan 17 - Fri, Jan 30
Air Canada Logo
4:05 pm - 8:00 amSTL-MAD
32h 55m2 stops
Air Canada Logo
1:35 pm - 11:02 amMAD-STL
28h 27m2 stops
$485Air Canada
Find Deal
Sat, Jan 10 - Thu, Feb 5
Multiple Airlines Logo
4:49 pm - 8:00 amSTL-MAD
32h 11m2 stops
Multiple Airlines Logo
5:55 am - 11:59 pmMAD-STL
25h 04m2 stops
$488Multiple Airlines
Find Deal
Sat, Jan 10 - Sun, Feb 1
Delta Logo
10:13 am - 9:15 amSTL-MAD
16h 02m1 stop
Delta Logo
6:00 am - 11:23 pmMAD-STL
24h 23m2 stops
$491Delta
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Mon, Feb 16 - Mon, Feb 23
United Airlines Logo
4:49 pm - 4:40 pmSTL-MAD
40h 51m2 stops
United Airlines Logo
5:55 am - 10:00 pmMAD-STL
23h 05m2 stops
$495United Airlines
Find Deal
Sat, Jan 10 - Sun, Feb 1

British Airways flights from St. Louis to Madrid

Our best British Airways deals on St. Louis to Madrid flight tickets
British Airways
Mar 20
STL2:21 pmLambert-St Louis
22h 14m
2 stops
MAD6:35 pmMadrid Barajas
Mar 31
MAD1:00 pmMadrid Barajas
17h 32m
1 stop
STL11:32 pmLambert-St Louis
$557
Find similar
British Airways
Mar 7
STL5:55 pmLambert-St Louis
32h 30m
1 stop
MAD9:25 amMadrid Barajas
Mar 15
MAD7:20 pmMadrid Barajas
28h 37m
2 stops
STL5:57 pmLambert-St Louis
$608
Find similar
British Airways
Jan 8
STL12:11 pmLambert-St Louis
23h 14m
2 stops
MAD6:25 pmMadrid Barajas
Jan 16
MAD1:15 pmMadrid Barajas
16h 29m
1 stop
STL10:44 pmLambert-St Louis
$617
Find similar

United Airlines flights from St. Louis to Madrid

Our best United Airlines deals on St. Louis to Madrid flight tickets
United Airlines
Jan 17
STL7:00 amLambert-St Louis
19h 15m
1 stop
MAD9:15 amMadrid Barajas
Jan 30
MAD6:00 amMadrid Barajas
14h 55m
1 stop
STL1:55 pmLambert-St Louis
$473
Find similar
United Airlines
Jan 10
STL4:49 pmLambert-St Louis
40h 51m
2 stops
MAD4:40 pmMadrid Barajas
Feb 1
MAD5:55 amMadrid Barajas
23h 05m
2 stops
STL10:00 pmLambert-St Louis
$495
Find similar
United Airlines
Jan 7
STL3:50 pmLambert-St Louis
17h 10m
1 stop
MAD4:00 pmMadrid Barajas
Jan 16
MAD1:35 pmMadrid Barajas
31h 53m
2 stops
STL2:28 pmLambert-St Louis
$565
Find similar

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 November 24, 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

Sat 1/17

4:05 pm-8:00 am

2 stops32h 55m

Madrid Barajas

Fri 1/30

6:00 am-1:55 pm

1 stop14h 55m

$456

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Sat 1/17

4:05 pm-8:00 am

2 stops32h 55m

Madrid Barajas

Fri 1/30

6:00 am-1:55 pm

1 stop14h 55m

$458

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Sat 1/17

4:05 pm-8:00 am

2 stops32h 55m

Madrid Barajas

Fri 1/30

1:35 pm-3:29 pm

2 stops32h 54m

$461

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Sat 1/17

4:05 pm-8:00 am

2 stops32h 55m

Madrid Barajas

Fri 1/30

6:00 am-1:55 pm

1 stop14h 55m

$466

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Sat 1/17

4:05 pm-8:00 am

2 stops32h 55m

Madrid Barajas

Fri 1/30

1:35 pm-3:29 pm

2 stops32h 54m

$468

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Sat 1/17

7:00 am-9:15 am

1 stop19h 15m

Madrid Barajas

Fri 1/30

6:00 am-1:55 pm

1 stop14h 55m

$473

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Sat 1/10

4:05 pm-8:00 am

2 stops32h 55m

Madrid Barajas

Thu 2/5

1:35 pm-11:02 am

2 stops28h 27m

$485

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Sat 1/10

4:49 pm-8:00 am

2 stops32h 11m

Madrid Barajas

Sun 2/1

5:55 am-11:59 pm

2 stops25h 04m

$488

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Mon 2/16

10:13 am-9:15 am

1 stop16h 02m

Madrid Barajas

Mon 2/23

6:00 am-11:23 pm

2 stops24h 23m

$491

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Sat 1/10

4:49 pm-4:40 pm

2 stops40h 51m

Madrid Barajas

Sun 2/1

5:55 am-10:00 pm

2 stops23h 05m

$495

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 $617. 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 $731.

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 $908 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 $609 on momondo.

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

You could potentially save up to 10% 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?

As of November 2025, prices for St. Louis to Madrid flights are approximately 27% 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 31m 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
7,583 reviews
Search Lufthansa flights
British AirwaysPriceFrom $546Free CancellationRating
6.7
7,535 reviews
Search British Airways flights
United AirlinesPriceFrom $578Free CancellationRating
7.4
9,037 reviews
Search United Airlines flights
IberiaPriceFrom $586Free CancellationRating
7.0
3,032 reviews
Search Iberia flights
DeltaPriceFrom $589Free CancellationRating
7.9
7,995 reviews
Search Delta flights
American AirlinesPriceFrom $636Free CancellationRating
7.2
11,045 reviews
Search American Airlines flights
Air CanadaPriceFrom $701Free CancellationRating
7.1
10,466 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
Cuenca
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
Iberia
American Airlines
British Airways
United Airlines
Air Canada
Lufthansa
Delta