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Cheap flights from St. Louis to Madrid from $302

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 10/10. 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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Cheap round-trip flights

Air Canada Logo
1:30 pm - 6:40 amSTL-MAD
10h 10m1 stop
Air Canada Logo
12:45 pm - 3:18 pmMAD-STL
33h 33m2 stops
$417Air Canada
Find Deal
Mon, Oct 6 - Wed, Oct 22
United Airlines Logo
1:30 pm - 6:40 amSTL-MAD
10h 10m1 stop
United Airlines Logo
12:45 pm - 2:27 pmMAD-STL
32h 42m2 stops
$418United Airlines
Find Deal
Sun, Oct 12 - Wed, Oct 22
Iberia Logo
1:20 pm - 9:25 amSTL-MAD
13h 05m1 stop
Iberia Logo
1:15 pm - 8:51 pmMAD-STL
14h 36m1 stop
$419Iberia
Find Deal
Wed, Dec 3 - Mon, Dec 8
Iberia Logo
12:54 pm - 7:55 amSTL-MAD
12h 01m1 stop
Iberia Logo
1:15 pm - 8:51 pmMAD-STL
14h 36m1 stop
$420Iberia
Find Deal
Wed, Dec 3 - Mon, Dec 8
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
$421Air Canada
Find Deal
Tue, Feb 17 - Tue, Mar 3
British Airways Logo
12:58 pm - 12:40 pmSTL-MAD
16h 42m2 stops
British Airways Logo
11:35 am - 5:56 pmMAD-STL
13h 21m1 stop
$449British Airways
Find Deal
Wed, Feb 18 - Wed, Mar 4
American Airlines Logo
7:30 am - 5:45 amSTL-MAD
15h 15m1 stop
American Airlines Logo
1:00 pm - 9:44 pmMAD-STL
15h 44m2 stops
$450American Airlines
Find Deal
Wed, Feb 18 - Wed, Mar 4
British Airways Logo
4:44 pm - 2:15 pmSTL-MAD
14h 31m2 stops
British Airways Logo
1:00 pm - 7:03 pmMAD-STL
13h 03m1 stop
$452British Airways
Find Deal
Mon, Feb 16 - Tue, Mar 3
Delta Logo
6:00 am - 9:35 amSTL-MAD
20h 35m1 stop
Delta Logo
6:00 am - 5:29 pmMAD-STL
18h 29m2 stops
$471Delta
Find Deal
Mon, Oct 6 - Tue, Oct 21
Delta Logo
5:25 pm - 9:35 amSTL-MAD
33h 10m1 stop
Delta Logo
6:00 am - 5:29 pmMAD-STL
18h 29m2 stops
$476Delta
Find Deal
Sat, Oct 11 - Tue, Oct 21

British Airways flights from St. Louis to Madrid

Our best British Airways deals on St. Louis to Madrid flight tickets
British Airways
Feb 18
STL12:58 pmLambert-St Louis
16h 42m
2 stops
MAD12:40 pmMadrid Barajas
Mar 4
MAD11:35 amMadrid Barajas
13h 21m
1 stop
STL5:56 pmLambert-St Louis
$449
Find similar
British Airways
Feb 16
STL4:44 pmLambert-St Louis
14h 31m
2 stops
MAD2:15 pmMadrid Barajas
Mar 3
MAD1:00 pmMadrid Barajas
13h 03m
1 stop
STL7:03 pmLambert-St Louis
$452
Find similar
British Airways
Feb 17
STL11:54 amLambert-St Louis
14h 31m
1 stop
MAD9:25 amMadrid Barajas
Mar 3
MAD1:00 pmMadrid Barajas
16h 24m
1 stop
STL10:24 pmLambert-St Louis
$475
Find similar

Air Canada flights from St. Louis to Madrid

Our best Air Canada deals on St. Louis to Madrid flight tickets
Air Canada
Oct 6
STL1:30 pmLambert-St Louis
10h 10m
1 stop
MAD6:40 amMadrid Barajas
Oct 22
MAD12:45 pmMadrid Barajas
33h 33m
2 stops
STL3:18 pmLambert-St Louis
$417
Find similar
Air Canada
Feb 17
STL4:05 pmLambert-St Louis
32h 55m
2 stops
MAD8:00 amMadrid Barajas
Mar 3
MAD1:35 pmMadrid Barajas
32h 54m
2 stops
STL3:29 pmLambert-St Louis
$421
Find similar
Air Canada
Feb 15
STL10:30 amLambert-St Louis
18h 35m
2 stops
MAD12:05 pmMadrid Barajas
Mar 3
MAD1:35 pmMadrid Barajas
38h 25m
2 stops
STL9:00 pmLambert-St Louis
$425
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 September 15, 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 10/6

1:30 pm-6:40 am

1 stop10h 10m

Madrid Barajas

Wed 10/22

12:45 pm-3:18 pm

2 stops33h 33m

$417

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Sun 10/12

1:30 pm-6:40 am

1 stop10h 10m

Madrid Barajas

Wed 10/22

12:45 pm-2:27 pm

2 stops32h 42m

$418

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 12/3

1:20 pm-9:25 am

1 stop13h 05m

Madrid Barajas

Mon 12/8

1:15 pm-8:51 pm

1 stop14h 36m

$419

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 12/3

12:54 pm-7:55 am

1 stop12h 01m

Madrid Barajas

Mon 12/8

1:15 pm-8:51 pm

1 stop14h 36m

$420

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Tue 2/17

4:05 pm-8:00 am

2 stops32h 55m

Madrid Barajas

Tue 3/3

1:35 pm-3:29 pm

2 stops32h 54m

$421

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 2/18

12:58 pm-12:40 pm

2 stops16h 42m

Madrid Barajas

Wed 3/4

11:35 am-5:56 pm

1 stop13h 21m

$449

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 2/18

7:30 am-5:45 am

1 stop15h 15m

Madrid Barajas

Wed 3/4

1:00 pm-9:44 pm

2 stops15h 44m

$450

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Mon 2/16

4:44 pm-2:15 pm

2 stops14h 31m

Madrid Barajas

Tue 3/3

1:00 pm-7:03 pm

1 stop13h 03m

$452

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Mon 10/6

6:00 am-9:35 am

1 stop20h 35m

Madrid Barajas

Tue 10/21

6:00 am-5:29 pm

2 stops18h 29m

$471

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Sat 10/11

5:25 pm-9:35 am

1 stop33h 10m

Madrid Barajas

Tue 10/21

6:00 am-5:29 pm

2 stops18h 29m

$476

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 $636. If you don’t want to visit Madrid in November, then you should wait until January to fly from St. Louis, when ticket prices are also cheap, with an average price of $725.

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 $916 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 $644 on momondo.

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

As of September 2025, prices for St. Louis to Madrid flights are approximately 28% 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.
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 10m 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
British AirwaysPriceFrom $546Free CancellationRating
6.6
7,361 reviews
Search British Airways flights
United AirlinesPriceFrom $578Free CancellationRating
7.4
8,929 reviews
Search United Airlines flights
IberiaPriceFrom $586Free CancellationRating
7.0
2,924 reviews
Search Iberia flights
DeltaPriceFrom $589Free CancellationRating
7.9
7,954 reviews
Search Delta flights
LufthansaPriceFrom $615Free CancellationRating
6.8
7,407 reviews
Search Lufthansa flights
American AirlinesPriceFrom $634Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
Air CanadaPriceFrom $841Free CancellationRating
7.1
10,000 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
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Ryanair
Emirates
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