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Cheap flights from St. Louis to Madrid from $330

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 10/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
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
8:55 am - 8:50 am
STL
-
MAD
16h 55m
1 stop
Multiple Airlines Logo
5:55 am - 1:25 pm
MAD
-
STL
14h 30m
1 stop
$702Multiple Airlines
Tue, Oct 6 - Tue, Oct 20
British Airways Logo
9:35 pm - 8:05 pm
STL
-
MAD
15h 30m
1 stop
British Airways Logo
10:35 am - 7:30 pm
MAD
-
STL
15h 55m
1 stop
$720British Airways
Wed, Oct 14 - Wed, Oct 21
United Airlines Logo
11:59 am - 9:00 am
STL
-
MAD
14h 01m
1 stop
United Airlines Logo
1:30 pm - 2:18 pm
MAD
-
STL
31h 48m
2 stops
$721United Airlines
Tue, Oct 6 - Tue, Oct 20
British Airways Logo
9:35 pm - 5:35 pm
STL
-
MAD
13h 00m
1 stop
British Airways Logo
12:40 pm - 11:31 pm
MAD
-
STL
17h 51m
1 stop
$723British Airways
Wed, Oct 7 - Wed, Oct 21
United Airlines Logo
9:23 am - 8:05 am
STL
-
MAD
15h 42m
2 stops
United Airlines Logo
1:30 pm - 2:18 pm
MAD
-
STL
31h 48m
2 stops
$725United Airlines
Wed, Oct 14 - Wed, Oct 21
United Airlines Logo
9:23 am - 8:05 am
STL
-
MAD
15h 42m
2 stops
United Airlines Logo
1:30 pm - 2:18 pm
MAD
-
STL
31h 48m
2 stops
$726United Airlines
Tue, Oct 6 - Tue, Oct 20
Multiple Airlines Logo
8:55 am - 8:50 am
STL
-
MAD
16h 55m
1 stop
Multiple Airlines Logo
5:55 am - 1:25 pm
MAD
-
STL
14h 30m
1 stop
$730Multiple Airlines
Tue, Oct 13 - Tue, Oct 20
United Airlines Logo
11:45 am - 8:05 am
STL
-
MAD
13h 20m
2 stops
United Airlines Logo
6:00 am - 2:55 pm
MAD
-
STL
14h 55m
1 stop
$731United Airlines
Wed, Oct 21 - Fri, Oct 30
American Airlines Logo
11:18 am - 5:30 am
STL
-
MAD
11h 12m
1 stop
American Airlines Logo
3:55 pm - 11:41 pm
MAD
-
STL
14h 46m
1 stop
$736American Airlines
Tue, Sep 29 - Fri, Oct 9
United Airlines Logo
6:40 am - 8:05 am
STL
-
MAD
18h 25m
2 stops
United Airlines Logo
5:55 am - 1:25 pm
MAD
-
STL
14h 30m
1 stop
$737United Airlines
Wed, Oct 7 - Wed, Oct 21

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American Airlines flights from St. Louis to Madrid

Our best American Airlines deals on St. Louis to Madrid flight tickets
American Airlines
Sep 29
STL11:18 amLambert-St Louis
11h 12m
1 stop
MAD5:30 amMadrid Barajas
Oct 9
MAD3:55 pmMadrid Barajas
14h 46m
1 stop
STL11:41 pmLambert-St Louis
$736
American Airlines
Sep 18
STL6:20 amLambert-St Louis
16h 10m
1 stop
MAD5:30 amMadrid Barajas
Oct 5
MAD3:55 pmMadrid Barajas
14h 46m
1 stop
STL11:41 pmLambert-St Louis
$866
American Airlines
May 3
STL9:40 pmLambert-St Louis
12h 50m
1 stop
MAD5:30 pmMadrid Barajas
May 18
MAD12:40 pmMadrid Barajas
16h 44m
1 stop
STL10:24 pmLambert-St Louis
$1,015

KLM flights from St. Louis to Madrid

Our best KLM deals on St. Louis to Madrid flight tickets
KLM
Oct 7
STL11:51 amLambert-St Louis
17h 24m
1 stop
MAD12:15 pmMadrid Barajas
Oct 21
MAD6:00 amMadrid Barajas
16h 58m
2 stops
STL3:58 pmLambert-St Louis
$738
KLM
Oct 7
STL11:51 amLambert-St Louis
17h 24m
1 stop
MAD12:15 pmMadrid Barajas
Oct 21
MAD6:00 amMadrid Barajas
16h 58m
2 stops
STL3:58 pmLambert-St Louis
$798
KLM
Apr 26
STL11:42 amLambert-St Louis
15h 13m
2 stops
MAD9:55 amMadrid Barajas
May 12
MAD12:45 pmMadrid Barajas
15h 53m
2 stops
STL9:38 pmLambert-St Louis
$959

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 April 24, 2026.
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

Cheapest round-trip

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Tue 10/6

8:55 am-8:50 am

1 stop16h 55m

Madrid Barajas

Tue 10/20

5:55 am-1:25 pm

1 stop14h 30m

$702

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 10/14

9:35 pm-8:05 pm

1 stop15h 30m

Madrid Barajas

Wed 10/21

10:35 am-7:30 pm

1 stop15h 55m

$720

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Tue 10/6

11:59 am-9:00 am

1 stop14h 01m

Madrid Barajas

Tue 10/20

1:30 pm-2:18 pm

2 stops31h 48m

$721

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 10/7

9:35 pm-5:35 pm

1 stop13h 00m

Madrid Barajas

Wed 10/21

12:40 pm-11:31 pm

1 stop17h 51m

$723

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 10/14

9:23 am-8:05 am

2 stops15h 42m

Madrid Barajas

Wed 10/21

1:30 pm-2:18 pm

2 stops31h 48m

$725

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Tue 10/6

9:23 am-8:05 am

2 stops15h 42m

Madrid Barajas

Tue 10/20

1:30 pm-2:18 pm

2 stops31h 48m

$726

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Tue 10/13

8:55 am-8:50 am

1 stop16h 55m

Madrid Barajas

Tue 10/20

5:55 am-1:25 pm

1 stop14h 30m

$730

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 10/21

11:45 am-8:05 am

2 stops13h 20m

Madrid Barajas

Fri 10/30

6:00 am-2:55 pm

1 stop14h 55m

$731
Quickest round-trip

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Tue 9/29

11:18 am-5:30 am

1 stop11h 12m

Madrid Barajas

Fri 10/9

3:55 pm-11:41 pm

1 stop14h 46m

$736

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 10/7

6:40 am-8:05 am

2 stops18h 25m

Madrid Barajas

Wed 10/21

5:55 am-1:25 pm

1 stop14h 30m

$737

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 $633. 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 $636.

How far in advance should I book a flight from St. Louis 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 $795 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 $694 on momondo.

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

You could potentially save up to 15% 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?

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

10h 36m

Direct flights

None
The fastest flight from St. Louis to Madrid takes 10h 36m
There are no direct flights from St. Louis to Madrid. There are no popular flight routes from St. Louis to Madrid.
Search flight deals

Frequently asked questions about flying from St. Louis to Madrid

  • 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 36m 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 $482Free CancellationRating
6.8
7,944 reviews
Search Lufthansa flights
DeltaPriceFrom $489Free CancellationRating
7.9
8,449 reviews
Search Delta flights
British AirwaysPriceFrom $516Free CancellationRating
6.7
7,910 reviews
Search British Airways flights
IberiaPriceFrom $568Free CancellationRating
7.0
3,195 reviews
Search Iberia flights
United AirlinesPriceFrom $578Free CancellationRating
7.4
9,644 reviews
Search United Airlines flights
American AirlinesPriceFrom $581Free CancellationRating
7.1
11,664 reviews
Search American Airlines flights
Air CanadaPriceFrom $659Free CancellationRating
7.1
10,961 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
Fuenlabrada
Getafe
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
American Airlines
British Airways
Iberia
United Airlines
Air Canada
Delta
Lufthansa