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Cheap flights from St. Louis to Madrid from $450

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 10/6. 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

KAYAK's recommended round-trip deals from the most popular airlines that fly from St. Louis to Madrid.
United Airlines Logo
1:30 pm - 7:50 amSTL-MAD
11h 20m1 stop
United Airlines Logo
12:15 pm - 3:38 pmMAD-STL
34h 23m2 stops
$649United Airlines
Find Deal
Mon, Oct 6 - Sun, Oct 19
United Airlines Logo
12:28 pm - 6:40 amSTL-MAD
35h 12m2 stops
United Airlines Logo
12:45 pm - 3:38 pmMAD-STL
33h 53m2 stops
$654United Airlines
Find Deal
Mon, Oct 6 - Sun, Oct 19
Air Canada Logo
9:15 am - 8:20 amSTL-MAD
16h 05m1 stop
Air Canada Logo
12:45 pm - 3:38 pmMAD-STL
33h 53m2 stops
$705Air Canada
Find Deal
Thu, Oct 9 - Sun, Oct 19
Air Canada Logo
9:15 am - 8:20 amSTL-MAD
16h 05m1 stop
Air Canada Logo
12:45 pm - 3:38 pmMAD-STL
33h 53m2 stops
$706Air Canada
Find Deal
Thu, Oct 9 - Sun, Oct 19
Iberia Logo
8:01 pm - 7:55 amSTL-MAD
28h 54m1 stop
Iberia Logo
10:45 am - 10:21 pmMAD-STL
18h 36m2 stops
$792Iberia
Find Deal
Sun, Aug 31 - Sun, Dec 21
British Airways Logo
6:10 pm - 9:05 amSTL-MAD
31h 55m1 stop
British Airways Logo
7:40 am - 10:02 pmMAD-STL
21h 22m2 stops
$811British Airways
Find Deal
Sun, Aug 31 - Sun, Dec 21
British Airways Logo
7:23 am - 6:05 pmSTL-MAD
27h 42m2 stops
British Airways Logo
12:55 am - 5:09 pmMAD-STL
22h 14m1 stop
$830British Airways
Find Deal
Fri, Oct 17 - Sat, Nov 1
Iberia Logo
8:01 pm - 7:55 amSTL-MAD
28h 54m1 stop
Iberia Logo
11:35 am - 10:02 pmMAD-STL
17h 27m1 stop
$842Iberia
Find Deal
Sun, Aug 31 - Sun, Dec 21
Delta Logo
6:00 am - 7:50 amSTL-MAD
18h 50m2 stops
Delta Logo
12:40 pm - 11:38 pmMAD-STL
17h 58m2 stops
$861Delta
Find Deal
Tue, May 13 - Mon, May 19
Delta Logo
6:40 am - 7:50 amSTL-MAD
18h 10m2 stops
Delta Logo
12:40 pm - 8:32 amMAD-STL
26h 52m2 stops
$3,201Delta
Find Deal
Wed, Jul 2 - Wed, Jul 9

Air Canada flights from St. Louis to Madrid

Our best Air Canada deals on St. Louis to Madrid flight tickets
Air Canada
Oct 9
STL9:15 amLambert-St Louis
16h 05m
1 stop
MAD8:20 amMadrid Barajas
Oct 19
MAD12:45 pmMadrid Barajas
33h 53m
2 stops
STL3:38 pmLambert-St Louis
Air Canada
Oct 9
STL9:15 amLambert-St Louis
16h 05m
1 stop
MAD8:20 amMadrid Barajas
Oct 19
MAD12:45 pmMadrid Barajas
33h 53m
2 stops
STL3:38 pmLambert-St Louis
Air Canada
Oct 9
STL9:15 amLambert-St Louis
16h 05m
1 stop
MAD8:20 amMadrid Barajas
Oct 19
MAD12:30 pmMadrid Barajas
33h 48m
1 stop
STL3:18 pmLambert-St Louis

Iberia flights from St. Louis to Madrid

Our best Iberia deals on St. Louis to Madrid flight tickets
Iberia
Aug 31
STL8:01 pmLambert-St Louis
28h 54m
1 stop
MAD7:55 amMadrid Barajas
Dec 21
MAD10:45 amMadrid Barajas
18h 36m
2 stops
STL10:21 pmLambert-St Louis
Iberia
Aug 31
STL8:01 pmLambert-St Louis
28h 54m
1 stop
MAD7:55 amMadrid Barajas
Dec 21
MAD11:35 amMadrid Barajas
17h 27m
1 stop
STL10:02 pmLambert-St Louis
Iberia
Aug 31
STL8:01 pmLambert-St Louis
28h 54m
1 stop
MAD7:55 amMadrid Barajas
Dec 20
MAD12:55 amMadrid Barajas
28h 26m
1 stop
STL10:21 pmLambert-St Louis

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 February is, on average, the cheapest month to fly to Madrid from St. Louis, with most prices found around $651. If you don’t want to visit Madrid in February, then you should wait until August to fly from St. Louis, when ticket prices are also cheap, with an average price of $697.

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 22 weeks ahead of your departure date. In general, you can expect to find flights to Madrid for around $933 when searching 22 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 $739 on momondo.

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

As of April 2025, prices for St. Louis to Madrid flights are approximately 33% 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

Best Price Found

$450

Fastest flight time

10h 10m

Direct flights

None

Airports in Madrid

1 airport
The best one-way flight to Madrid from St. Louis in the past 72 hours is $450. The best round-trip flight deal from St. Louis to Madrid found on momondo in the last 72 hours is $649.
The fastest flight from St. Louis to Madrid takes 10h 10m
There are no direct flights from St. Louis to Madrid. Popular non-direct route for this connection is Lambert-St Louis Airport - Madrid Barajas Airport.
There is 1 airport near Madrid: Madrid Barajas (MAD)

  • 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 $545Free CancellationRating
6.6
6,806 reviews
Search British Airways flights
IberiaPriceFrom $553Free CancellationRating
7.0
2,682 reviews
Search Iberia flights
American AirlinesPriceFrom $581Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $592Free CancellationRating
8.0
7,920 reviews
Search Delta flights
LufthansaPriceFrom $615Free CancellationRating
6.7
7,027 reviews
Search Lufthansa flights
Air CanadaPriceFrom $670Free CancellationRating
7.0
9,189 reviews
Search Air Canada flights
United AirlinesPriceFrom $676Free CancellationRating
7.4
8,685 reviews
Search United Airlines 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
Cuenca
Guadalajara
El Arenal

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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