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Cheap flights from St. Louis to Madrid from $445

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 11/7. 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

Logo
1:30 pm - 6:40 amSTL-MAD
10h 10m1 stop
Logo
5:55 am - 2:55 pmMAD-STL
15h 00m1 stop
$556
Find Deal
Mon, Oct 13 - Wed, Oct 29
Air Canada Logo
1:30 pm - 6:40 amSTL-MAD
10h 10m1 stop
Air Canada Logo
12:45 pm - 2:27 pmMAD-STL
32h 42m2 stops
$560Air Canada
Find Deal
Mon, Oct 6 - Wed, Oct 22
United Airlines Logo
5:00 am - 8:20 amSTL-MAD
20h 20m2 stops
United Airlines Logo
12:30 pm - 10:49 amMAD-STL
29h 19m2 stops
$577United Airlines
Find Deal
Wed, Oct 8 - Wed, Oct 15
United Airlines Logo
1:30 pm - 6:40 amSTL-MAD
10h 10m1 stop
United Airlines Logo
12:30 pm - 3:18 pmMAD-STL
33h 48m1 stop
$579United Airlines
Find Deal
Tue, Oct 7 - Tue, Oct 21
Delta Logo
6:00 am - 9:35 amSTL-MAD
20h 35m1 stop
Delta Logo
10:05 am - 9:28 pmMAD-STL
18h 23m1 stop
$587Delta
Find Deal
Wed, Oct 8 - Thu, Oct 16
Delta Logo
6:40 am - 7:50 amSTL-MAD
18h 10m2 stops
Delta Logo
12:40 pm - 9:37 amMAD-STL
27h 57m2 stops
$591Delta
Find Deal
Wed, Oct 8 - Tue, Oct 21
Lufthansa Logo
12:25 pm - 10:25 pmSTL-MAD
27h 00m2 stops
Lufthansa Logo
6:00 am - 3:44 pmMAD-STL
16h 44m2 stops
$620Lufthansa
Find Deal
Wed, Oct 8 - Thu, Oct 23
Iberia Logo
8:00 pm - 7:55 amSTL-MAD
28h 55m1 stop
Iberia Logo
11:00 pm - 8:20 pmMAD-STL
27h 20m2 stops
$624Iberia
Find Deal
Sat, Oct 18 - Mon, Oct 27
Iberia Logo
11:39 am - 9:25 amSTL-MAD
14h 46m1 stop
Iberia Logo
11:35 am - 8:23 pmMAD-STL
15h 48m1 stop
$636Iberia
Find Deal
Fri, Nov 7 - Wed, Nov 12
Lufthansa Logo
12:25 pm - 11:00 amSTL-MAD
15h 35m2 stops
Lufthansa Logo
6:00 am - 3:44 pmMAD-STL
16h 44m2 stops
$665Lufthansa
Find Deal
Sun, Oct 12 - Sat, Oct 25

Iberia flights from St. Louis to Madrid

Our best Iberia deals on St. Louis to Madrid flight tickets
Iberia
Oct 18
STL8:00 pmLambert-St Louis
28h 55m
1 stop
MAD7:55 amMadrid Barajas
Oct 27
MAD11:00 pmMadrid Barajas
27h 20m
2 stops
STL8:20 pmLambert-St Louis
$624
Find similar
Iberia
Nov 7
STL11:39 amLambert-St Louis
14h 46m
1 stop
MAD9:25 amMadrid Barajas
Nov 12
MAD11:35 amMadrid Barajas
15h 48m
1 stop
STL8:23 pmLambert-St Louis
$636
Find similar
Iberia
Oct 9
STL10:36 amLambert-St Louis
15h 59m
1 stop
MAD9:35 amMadrid Barajas
Oct 23
MAD4:40 pmMadrid Barajas
14h 14m
1 stop
STL11:54 pmLambert-St Louis
$637
Find similar

Delta flights from St. Louis to Madrid

Our best Delta deals on St. Louis to Madrid flight tickets
Delta
Oct 8
STL6:00 amLambert-St Louis
20h 35m
1 stop
MAD9:35 amMadrid Barajas
Oct 16
MAD10:05 amMadrid Barajas
18h 23m
1 stop
STL9:28 pmLambert-St Louis
$587
Find similar
Delta
Oct 8
STL6:40 amLambert-St Louis
18h 10m
2 stops
MAD7:50 amMadrid Barajas
Oct 21
MAD12:40 pmMadrid Barajas
27h 57m
2 stops
STL9:37 amLambert-St Louis
$591
Find similar
Delta
Oct 10
STL5:40 pmLambert-St Louis
31h 10m
1 stop
MAD7:50 amMadrid Barajas
Oct 22
MAD12:40 pmMadrid Barajas
14h 28m
1 stop
STL8:08 pmLambert-St Louis
$644
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 August 26, 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 10/13

1:30 pm-6:40 am

1 stop10h 10m

Madrid Barajas

Wed 10/29

5:55 am-2:55 pm

1 stop15h 00m

$556

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-2:27 pm

2 stops32h 42m

$560

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 10/8

5:00 am-8:20 am

2 stops20h 20m

Madrid Barajas

Wed 10/15

12:30 pm-10:49 am

2 stops29h 19m

$577

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Tue 10/7

1:30 pm-6:40 am

1 stop10h 10m

Madrid Barajas

Tue 10/21

12:30 pm-3:18 pm

1 stop33h 48m

$579

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 10/8

6:00 am-9:35 am

1 stop20h 35m

Madrid Barajas

Thu 10/16

10:05 am-9:28 pm

1 stop18h 23m

$587

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 10/8

6:40 am-7:50 am

2 stops18h 10m

Madrid Barajas

Tue 10/21

12:40 pm-9:37 am

2 stops27h 57m

$591

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 10/8

12:25 pm-10:25 pm

2 stops27h 00m

Madrid Barajas

Thu 10/23

6:00 am-3:44 pm

2 stops16h 44m

$620

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Sat 10/18

8:00 pm-7:55 am

1 stop28h 55m

Madrid Barajas

Mon 10/27

11:00 pm-8:20 pm

2 stops27h 20m

$624

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Fri 11/7

11:39 am-9:25 am

1 stop14h 46m

Madrid Barajas

Wed 11/12

11:35 am-8:23 pm

1 stop15h 48m

$636

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Sun 10/12

12:25 pm-11:00 am

2 stops15h 35m

Madrid Barajas

Sat 10/25

6:00 am-3:44 pm

2 stops16h 44m

$665

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 17 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 $686. 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 $920 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 $642 on momondo.

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

As of August 2025, prices for St. Louis to Madrid flights are approximately 14% 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. 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
6.7
7,309 reviews
Search British Airways flights
United AirlinesPriceFrom $578Free CancellationRating
7.4
8,943 reviews
Search United Airlines flights
IberiaPriceFrom $580Free CancellationRating
7.0
2,891 reviews
Search Iberia flights
LufthansaPriceFrom $615Free CancellationRating
6.8
7,359 reviews
Search Lufthansa flights
American AirlinesPriceFrom $616Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $630Free CancellationRating
7.9
7,979 reviews
Search Delta 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
American Airlines
Delta
United Airlines
Turkish Airlines
Lufthansa
Frontier
British Airways
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