Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from St. Louis to Madrid from $329

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 9/20. 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

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from St. Louis to Madrid

Cheap round-trip flights

Enter your travel dates to find the best prices.
British Airways Logo
12:47 pm - 9:35 am
STL
-
MAD
13h 48m
1 stop
British Airways Logo
1:35 pm - 8:03 pm
MAD
-
STL
13h 28m
1 stop
$681British Airways
Tue, Sep 22 - Wed, Sep 30
United Airlines Logo
12:30 pm - 9:00 am
STL
-
MAD
13h 30m
1 stop
United Airlines Logo
1:30 pm - 4:26 pm
MAD
-
STL
33h 56m
2 stops
$720United Airlines
Tue, Sep 22 - Wed, Sep 30
United Airlines Logo
12:30 pm - 9:00 am
STL
-
MAD
13h 30m
1 stop
United Airlines Logo
5:55 am - 1:25 pm
MAD
-
STL
14h 30m
1 stop
$725United Airlines
Tue, Sep 22 - Wed, Sep 30
United Airlines Logo
12:30 pm - 9:00 am
STL
-
MAD
13h 30m
1 stop
United Airlines Logo
5:55 am - 1:25 pm
MAD
-
STL
14h 30m
1 stop
$726United Airlines
Tue, Sep 22 - Tue, Sep 29
United Airlines Logo
5:32 pm - 8:50 am
STL
-
MAD
32h 18m
2 stops
United Airlines Logo
6:00 am - 1:25 pm
MAD
-
STL
14h 25m
1 stop
$729United Airlines
Sat, Sep 19 - Fri, Oct 2
United Airlines Logo
9:16 am - 8:05 am
STL
-
MAD
15h 49m
2 stops
United Airlines Logo
5:55 am - 1:25 pm
MAD
-
STL
14h 30m
1 stop
$730United Airlines
Mon, Sep 21 - Wed, Sep 30
British Airways Logo
4:29 pm - 1:30 pm
STL
-
MAD
14h 01m
1 stop
British Airways Logo
1:00 pm - 11:33 pm
MAD
-
STL
17h 33m
1 stop
$731British Airways
Tue, Sep 22 - Wed, Sep 30
United Airlines Logo
12:30 pm - 9:00 am
STL
-
MAD
13h 30m
1 stop
United Airlines Logo
8:25 am - 2:00 pm
MAD
-
STL
36h 35m
2 stops
$734United Airlines
Tue, Sep 22 - Tue, Oct 6
Delta Logo
5:30 pm - 12:15 pm
STL
-
MAD
11h 45m
1 stop
Delta Logo
12:45 pm - 8:50 pm
MAD
-
STL
15h 05m
1 stop
$736Delta
Mon, Sep 21 - Fri, Oct 2
United Airlines Logo
6:14 am - 9:00 am
STL
-
MAD
19h 46m
2 stops
United Airlines Logo
8:25 am - 2:00 pm
MAD
-
STL
36h 35m
2 stops
$738United Airlines
Tue, Sep 22 - Tue, Oct 6

United Airlines flights from St. Louis to Madrid

Our best United Airlines deals on St. Louis to Madrid flight tickets
United Airlines
Sep 22
STL12:30 pmLambert-St Louis
13h 30m
1 stop
MAD9:00 amMadrid Barajas
Sep 30
MAD1:30 pmMadrid Barajas
33h 56m
2 stops
STL4:26 pmLambert-St Louis
$720
United Airlines
Sep 22
STL12:30 pmLambert-St Louis
13h 30m
1 stop
MAD9:00 amMadrid Barajas
Sep 30
MAD5:55 amMadrid Barajas
14h 30m
1 stop
STL1:25 pmLambert-St Louis
$725
United Airlines
Sep 22
STL12:30 pmLambert-St Louis
13h 30m
1 stop
MAD9:00 amMadrid Barajas
Sep 29
MAD5:55 amMadrid Barajas
14h 30m
1 stop
STL1:25 pmLambert-St Louis
$726

Delta flights from St. Louis to Madrid

Our best Delta deals on St. Louis to Madrid flight tickets
Delta
Sep 21
STL5:30 pmLambert-St Louis
11h 45m
1 stop
MAD12:15 pmMadrid Barajas
Oct 2
MAD12:45 pmMadrid Barajas
15h 05m
1 stop
STL8:50 pmLambert-St Louis
$736
Delta
Sep 23
STL9:00 amLambert-St Louis
17h 55m
1 stop
MAD9:55 amMadrid Barajas
Sep 29
MAD2:35 pmMadrid Barajas
16h 02m
2 stops
STL11:37 pmLambert-St Louis
$740
Delta
Sep 20
STL6:00 amLambert-St Louis
23h 15m
1 stop
MAD12:15 pmMadrid Barajas
Oct 2
MAD12:45 pmMadrid Barajas
15h 05m
1 stop
STL8:50 pmLambert-St Louis
$741

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 March 29, 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 9/22

12:47 pm-9:35 am

1 stop13h 48m

Madrid Barajas

Wed 9/30

1:35 pm-8:03 pm

1 stop13h 28m

$681

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Tue 9/22

12:30 pm-9:00 am

1 stop13h 30m

Madrid Barajas

Wed 9/30

1:30 pm-4:26 pm

2 stops33h 56m

$720

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Tue 9/22

12:30 pm-9:00 am

1 stop13h 30m

Madrid Barajas

Wed 9/30

5:55 am-1:25 pm

1 stop14h 30m

$725

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Tue 9/22

12:30 pm-9:00 am

1 stop13h 30m

Madrid Barajas

Tue 9/29

5:55 am-1:25 pm

1 stop14h 30m

$726

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Sat 9/19

5:32 pm-8:50 am

2 stops32h 18m

Madrid Barajas

Fri 10/2

6:00 am-1:25 pm

1 stop14h 25m

$729

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Mon 9/21

9:16 am-8:05 am

2 stops15h 49m

Madrid Barajas

Wed 9/30

5:55 am-1:25 pm

1 stop14h 30m

$730

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Tue 9/22

4:29 pm-1:30 pm

1 stop14h 01m

Madrid Barajas

Wed 9/30

1:00 pm-11:33 pm

1 stop17h 33m

$731

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Tue 9/22

12:30 pm-9:00 am

1 stop13h 30m

Madrid Barajas

Tue 10/6

8:25 am-2:00 pm

2 stops36h 35m

$734
Quickest round-trip

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Mon 9/21

5:30 pm-12:15 pm

1 stop11h 45m

Madrid Barajas

Fri 10/2

12:45 pm-8:50 pm

1 stop15h 05m

$736

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Tue 9/22

6:14 am-9:00 am

2 stops19h 46m

Madrid Barajas

Tue 10/6

8:25 am-2:00 pm

2 stops36h 35m

$738

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 $630. 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 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 $799 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 16% 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

12h 55m

Direct flights

None
The fastest flight from St. Louis to Madrid takes 12h 55m
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. 12h 55m 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
7,877 reviews
Search Lufthansa flights
DeltaPriceFrom $489Free CancellationRating
7.9
8,359 reviews
Search Delta flights
British AirwaysPriceFrom $516Free CancellationRating
6.7
7,834 reviews
Search British Airways flights
IberiaPriceFrom $552Free CancellationRating
7.0
3,160 reviews
Search Iberia flights
United AirlinesPriceFrom $578Free CancellationRating
7.4
9,514 reviews
Search United Airlines flights
American AirlinesPriceFrom $582Free CancellationRating
7.1
11,530 reviews
Search American Airlines flights
Air CanadaPriceFrom $750Free CancellationRating
7.1
10,861 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.

An easier way to manage your Madrid trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Tue 4/28
Tue 5/5
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Spain

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