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Cheap flights from St. Louis to Madrid from $242

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 1/19. 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.
Multiple Airlines Logo
4:05 pm - 8:00 am
STL
-
MAD
32h 55m2 stops
Multiple Airlines Logo
6:00 am - 2:55 pm
MAD
-
STL
14h 55m1 stop
$466Multiple Airlines
Wed, Mar 4 - Fri, Mar 13
Multiple Airlines Logo
4:05 pm - 8:00 am
STL
-
MAD
32h 55m2 stops
Multiple Airlines Logo
5:55 am - 1:55 pm
MAD
-
STL
15h 00m1 stop
$467Multiple Airlines
Sun, Jan 18 - Sun, Jan 25
Multiple Airlines Logo
4:05 pm - 8:00 am
STL
-
MAD
56h 55m2 stops
Multiple Airlines Logo
5:55 am - 1:55 pm
MAD
-
STL
15h 00m1 stop
$469Multiple Airlines
Mon, Jan 12 - Sun, Jan 25
United Airlines Logo
8:30 am - 8:00 am
STL
-
MAD
16h 30m2 stops
United Airlines Logo
12:40 pm - 9:07 pm
MAD
-
STL
38h 27m2 stops
$472United Airlines
Wed, Mar 4 - Tue, Mar 10
Air Canada Logo
4:05 pm - 8:00 am
STL
-
MAD
32h 55m2 stops
Air Canada Logo
12:40 pm - 9:07 pm
MAD
-
STL
38h 27m2 stops
$474Air Canada
Wed, Mar 4 - Wed, Mar 11
Lufthansa Logo
3:50 pm - 8:15 pm
STL
-
MAD
21h 25m1 stop
Lufthansa Logo
6:00 am - 2:55 pm
MAD
-
STL
14h 55m1 stop
$475Lufthansa
Wed, Mar 4 - Fri, Mar 13
British Airways Logo
2:24 pm - 11:55 am
STL
-
MAD
14h 31m2 stops
British Airways Logo
1:00 pm - 7:30 pm
MAD
-
STL
13h 30m1 stop
$476British Airways
Tue, Feb 17 - Sun, Mar 1
United Airlines Logo
7:41 am - 4:40 pm
STL
-
MAD
25h 59m2 stops
United Airlines Logo
12:40 pm - 9:05 pm
MAD
-
STL
38h 25m2 stops
$478United Airlines
Thu, Mar 5 - Fri, Mar 13
British Airways Logo
6:00 am - 11:55 am
STL
-
MAD
22h 55m2 stops
British Airways Logo
12:00 pm - 11:52 pm
MAD
-
STL
17h 52m2 stops
$481British Airways
Thu, Mar 5 - Thu, Mar 12
United Airlines Logo
8:30 am - 8:00 am
STL
-
MAD
16h 30m2 stops
United Airlines Logo
6:00 am - 2:55 pm
MAD
-
STL
14h 55m1 stop
$482United Airlines
Wed, Mar 4 - Fri, Mar 13

British Airways flights from St. Louis to Madrid

Our best British Airways deals on St. Louis to Madrid flight tickets
British Airways
Feb 17
STL2:24 pmLambert-St Louis
14h 31m
2 stops
MAD11:55 amMadrid Barajas
Mar 1
MAD1:00 pmMadrid Barajas
13h 30m
1 stop
STL7:30 pmLambert-St Louis
$476
Find similar
British Airways
Mar 5
STL6:00 amLambert-St Louis
22h 55m
2 stops
MAD11:55 amMadrid Barajas
Mar 12
MAD12:00 pmMadrid Barajas
17h 52m
2 stops
STL11:52 pmLambert-St Louis
$481
Find similar
British Airways
Feb 17
STL2:00 pmLambert-St Louis
11h 55m
1 stop
MAD8:55 amMadrid Barajas
Mar 1
MAD1:00 pmMadrid Barajas
13h 30m
1 stop
STL7:30 pmLambert-St Louis
$486
Find similar

United Airlines flights from St. Louis to Madrid

Our best United Airlines deals on St. Louis to Madrid flight tickets
United Airlines
Mar 4
STL8:30 amLambert-St Louis
16h 30m
2 stops
MAD8:00 amMadrid Barajas
Mar 13
MAD12:40 pmMadrid Barajas
38h 25m
2 stops
STL9:05 pmLambert-St Louis
$472
Find similar
United Airlines
Mar 5
STL7:41 amLambert-St Louis
25h 59m
2 stops
MAD4:40 pmMadrid Barajas
Mar 13
MAD12:40 pmMadrid Barajas
38h 25m
2 stops
STL9:05 pmLambert-St Louis
$478
Find similar
United Airlines
Mar 4
STL8:30 amLambert-St Louis
16h 30m
2 stops
MAD8:00 amMadrid Barajas
Mar 13
MAD6:00 amMadrid Barajas
14h 55m
1 stop
STL2:55 pmLambert-St Louis
$482
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 December 17, 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

Wed 3/4

4:05 pm-8:00 am

2 stops32h 55m

Madrid Barajas

Fri 3/13

6:00 am-2:55 pm

1 stop14h 55m

$466

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Sun 1/18

4:05 pm-8:00 am

2 stops32h 55m

Madrid Barajas

Sun 1/25

5:55 am-1:55 pm

1 stop15h 00m

$467

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Mon 1/12

4:05 pm-8:00 am

2 stops56h 55m

Madrid Barajas

Sun 1/25

5:55 am-1:55 pm

1 stop15h 00m

$469

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 3/4

8:30 am-8:00 am

2 stops16h 30m

Madrid Barajas

Tue 3/10

12:40 pm-9:07 pm

2 stops38h 27m

$472

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 3/4

4:05 pm-8:00 am

2 stops32h 55m

Madrid Barajas

Wed 3/11

12:40 pm-9:07 pm

2 stops38h 27m

$474

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 3/4

3:50 pm-8:15 pm

1 stop21h 25m

Madrid Barajas

Fri 3/13

6:00 am-2:55 pm

1 stop14h 55m

$475

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Tue 2/17

2:24 pm-11:55 am

2 stops14h 31m

Madrid Barajas

Sun 3/1

1:00 pm-7:30 pm

1 stop13h 30m

$476

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Thu 3/5

7:41 am-4:40 pm

2 stops25h 59m

Madrid Barajas

Fri 3/13

12:40 pm-9:05 pm

2 stops38h 25m

$478

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Thu 3/5

6:00 am-11:55 am

2 stops22h 55m

Madrid Barajas

Thu 3/12

12:00 pm-11:52 pm

2 stops17h 52m

$481

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 3/4

8:30 am-8:00 am

2 stops16h 30m

Madrid Barajas

Fri 3/13

6:00 am-2:55 pm

1 stop14h 55m

$482

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 $608. 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 $709.

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 $873 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 25% 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 December 2025, prices for St. Louis to Madrid flights are approximately 60% 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

Fastest flight time

11h 56m

Direct flights

None
The fastest flight from St. Louis to Madrid takes 11h 56m
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. 11h 56m 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
7,632 reviews
Search Lufthansa flights
British AirwaysPriceFrom $546Free CancellationRating
6.7
7,583 reviews
Search British Airways flights
United AirlinesPriceFrom $578Free CancellationRating
7.4
9,092 reviews
Search United Airlines flights
IberiaPriceFrom $586Free CancellationRating
7.0
3,051 reviews
Search Iberia flights
American AirlinesPriceFrom $587Free CancellationRating
7.2
11,049 reviews
Search American Airlines flights
DeltaPriceFrom $587Free CancellationRating
7.9
8,008 reviews
Search Delta flights
Air CanadaPriceFrom $701Free CancellationRating
7.1
10,531 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
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
Iberia
American Airlines
United Airlines
British Airways
Air Canada
Delta
Lufthansa