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Cheap flights from St. Louis to Madrid from $281

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 8/7. 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

Enter your travel dates to find the best prices.
Multiple Airlines Logo
9:37 am - 8:50 am
STL
-
MAD
17h 13m
1 stop
Multiple Airlines Logo
5:05 pm - 11:29 am
MAD
-
STL
24h 24m
1 stop
$483Multiple Airlines
Mon, Mar 9 - Mon, Mar 16
Scandinavian Airlines Logo
10:12 am - 8:05 am
STL
-
MAD
15h 53m
1 stop
Scandinavian Airlines Logo
10:05 am - 11:58 pm
MAD
-
STL
19h 53m
1 stop
$490Scandinavian Airlines
Mon, Mar 9 - Mon, Mar 16
United Airlines Logo
7:40 am - 7:00 am
STL
-
MAD
17h 20m
2 stops
United Airlines Logo
6:00 am - 3:29 pm
MAD
-
STL
39h 29m
2 stops
$493United Airlines
Mon, Mar 9 - Mon, Mar 16
Delta Logo
7:03 am - 8:05 am
STL
-
MAD
19h 02m
1 stop
Delta Logo
12:35 pm - 9:46 am
MAD
-
STL
27h 11m
2 stops
$506Delta
Mon, Mar 9 - Mon, Mar 16
Delta Logo
6:59 pm - 7:40 pm
STL
-
MAD
18h 41m
2 stops
Delta Logo
12:35 pm - 9:46 am
MAD
-
STL
27h 11m
2 stops
$516Delta
Mon, Mar 9 - Mon, Mar 16
United Airlines Logo
6:30 am - 4:45 pm
STL
-
MAD
27h 15m
2 stops
United Airlines Logo
8:25 am - 3:24 pm
MAD
-
STL
37h 59m
2 stops
$519United Airlines
Wed, Apr 8 - Mon, Apr 13
United Airlines Logo
10:00 am - 4:45 pm
STL
-
MAD
23h 45m
2 stops
United Airlines Logo
1:25 pm - 10:28 pm
MAD
-
STL
40h 03m
2 stops
$521United Airlines
Wed, Apr 15 - Mon, Apr 20
Multiple Airlines Logo
12:25 pm - 7:55 am
STL
-
MAD
12h 30m
1 stop
Multiple Airlines Logo
4:25 pm - 10:16 am
MAD
-
STL
24h 51m
1 stop
$541Multiple Airlines
Wed, Apr 8 - Mon, Apr 13
British Airways Logo
6:57 pm - 5:45 am
STL
-
MAD
28h 48m
1 stop
British Airways Logo
9:00 pm - 11:44 pm
MAD
-
STL
33h 44m
2 stops
$542British Airways
Sat, Mar 21 - Mon, Mar 30
Multiple Airlines Logo
4:05 pm - 6:50 am
STL
-
MAD
55h 45m
2 stops
Multiple Airlines Logo
8:20 am - 1:25 pm
MAD
-
STL
36h 05m
1 stop
$557Multiple Airlines
Thu, Apr 16 - Thu, Apr 30

United Airlines flights from St. Louis to Madrid

Our best United Airlines deals on St. Louis to Madrid flight tickets
United Airlines
Mar 9
STL7:40 amLambert-St Louis
17h 20m
2 stops
MAD7:00 amMadrid Barajas
Mar 16
MAD6:00 amMadrid Barajas
39h 29m
2 stops
STL3:29 pmLambert-St Louis
$493
United Airlines
Apr 8
STL6:30 amLambert-St Louis
27h 15m
2 stops
MAD4:45 pmMadrid Barajas
Apr 13
MAD8:25 amMadrid Barajas
37h 59m
2 stops
STL3:24 pmLambert-St Louis
$519
United Airlines
Apr 15
STL10:00 amLambert-St Louis
23h 45m
2 stops
MAD4:45 pmMadrid Barajas
Apr 20
MAD1:25 pmMadrid Barajas
40h 03m
2 stops
STL10:28 pmLambert-St Louis
$521

Delta flights from St. Louis to Madrid

Our best Delta deals on St. Louis to Madrid flight tickets
Delta
Mar 9
STL7:03 amLambert-St Louis
19h 02m
1 stop
MAD8:05 amMadrid Barajas
Mar 16
MAD12:35 pmMadrid Barajas
27h 11m
2 stops
STL9:46 amLambert-St Louis
$506
Delta
Mar 9
STL6:59 pmLambert-St Louis
18h 41m
2 stops
MAD7:40 pmMadrid Barajas
Mar 16
MAD12:35 pmMadrid Barajas
27h 11m
2 stops
STL9:46 amLambert-St Louis
$516
Delta
May 9
STL7:25 amLambert-St Louis
15h 55m
2 stops
MAD6:20 amMadrid Barajas
May 20
MAD2:35 pmMadrid Barajas
16h 24m
2 stops
STL11:59 pmLambert-St Louis
$650

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 February 8, 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

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Mon 3/9

9:37 am-8:50 am

1 stop17h 13m

Madrid Barajas

Mon 3/16

5:05 pm-11:29 am

1 stop24h 24m

$483

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Mon 3/9

10:12 am-8:05 am

1 stop15h 53m

Madrid Barajas

Mon 3/16

10:05 am-11:58 pm

1 stop19h 53m

$490

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Mon 3/9

7:40 am-7:00 am

2 stops17h 20m

Madrid Barajas

Mon 3/16

6:00 am-3:29 pm

2 stops39h 29m

$493

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Mon 3/9

7:03 am-8:05 am

1 stop19h 02m

Madrid Barajas

Mon 3/16

12:35 pm-9:46 am

2 stops27h 11m

$506

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Mon 3/9

6:59 pm-7:40 pm

2 stops18h 41m

Madrid Barajas

Mon 3/16

12:35 pm-9:46 am

2 stops27h 11m

$516

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 4/8

6:30 am-4:45 pm

2 stops27h 15m

Madrid Barajas

Mon 4/13

8:25 am-3:24 pm

2 stops37h 59m

$519

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 4/15

10:00 am-4:45 pm

2 stops23h 45m

Madrid Barajas

Mon 4/20

1:25 pm-10:28 pm

2 stops40h 03m

$521

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 4/8

12:25 pm-7:55 am

1 stop12h 30m

Madrid Barajas

Mon 4/13

4:25 pm-10:16 am

1 stop24h 51m

$541

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Sat 3/21

6:57 pm-5:45 am

1 stop28h 48m

Madrid Barajas

Mon 3/30

9:00 pm-11:44 pm

2 stops33h 44m

$542

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Thu 4/16

4:05 pm-6:50 am

2 stops55h 45m

Madrid Barajas

Thu 4/30

8:20 am-1:25 pm

1 stop36h 05m

$557

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 December to fly from St. Louis, when ticket prices are also cheap, with an average price of $666.

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 $845 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 34% 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

17h 49m

Direct flights

None
The fastest flight from St. Louis to Madrid takes 17h 49m
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. 17h 49m 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
7,775 reviews
Search Lufthansa flights
British AirwaysPriceFrom $516Free CancellationRating
6.7
7,721 reviews
Search British Airways flights
United AirlinesPriceFrom $578Free CancellationRating
7.4
9,257 reviews
Search United Airlines flights
IberiaPriceFrom $580Free CancellationRating
7.0
3,109 reviews
Search Iberia flights
DeltaPriceFrom $580Free CancellationRating
7.9
8,173 reviews
Search Delta flights
American AirlinesPriceFrom $585Free CancellationRating
7.2
11,255 reviews
Search American Airlines flights
Air CanadaPriceFrom $701Free CancellationRating
7.1
10,698 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
Iberia
British Airways
United Airlines
Air Canada
Delta
Lufthansa