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St. Louis

$509+ Cheap flights from Madrid, Spain (MAD) to St. Louis (STL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/15. Fares are subject to change and may not be available on all flights or dates of travel.
MAD — STL
May 27 — Jun 31
Wed 5/27
Wed 6/3
1 adult, Economy
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Cheap flight deals from Madrid to St. Louis

Cheapest flights from Madrid to St. Louis
Explore the most affordable flight options available from Madrid to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 27, 2026.

This United Airlines deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/86:00 am
MAD
-
STL
1 stop14h 25m
United Airlines
Tue 5/126:15 am
STL
-
MAD
1 stop19h 45m
United Airlines
Deal found 4/24$928
This United Airlines deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/226:00 am
MAD
-
STL
1 stop14h 25m
United Airlines
Thu 5/286:00 am
STL
-
MAD
1 stop20h 00m
United Airlines
Deal found 4/25$929
This United Airlines deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/165:55 am
MAD
-
STL
1 stop14h 30m
United Airlines
Sat 9/127:01 am
STL
-
MAD
1 stop18h 59m
United Airlines
Deal found 4/27$930
This United Airlines deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/105:55 am
MAD
-
STL
1 stop14h 30m
United Airlines
Wed 6/171:05 pm
STL
-
MAD
1 stop10h 45m
United Airlines
Deal found 4/26$931
This Sembo deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Sembo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/188:20 am
MAD
-
STL
2 stops18h 06m
Multiple Airlines
Fri 9/118:55 am
STL
-
MAD
1 stop16h 55m
Multiple Airlines
Deal found 4/27$932
This United Airlines deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/186:05 am
MAD
-
STL
2 stops21h 20m
United Airlines
Wed 9/99:16 am
STL
-
MAD
2 stops15h 49m
United Airlines
Deal found 4/27$933
This United Airlines deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/176:00 am
MAD
-
STL
2 stops20h 25m
United Airlines
Fri 12/255:18 pm
STL
-
MAD
2 stops32h 57m
United Airlines
Deal found 4/25$934
This Lufthansa deal was found by Cheapflights users on 4/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/75:55 am
MAD
-
STL
2 stops16h 51m
Lufthansa
Sun 6/1412:23 pm
STL
-
MAD
1 stop13h 37m
Lufthansa
Deal found 4/23$936
This United Airlines deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/165:55 am
MAD
-
STL
1 stop14h 30m
United Airlines
Wed 9/98:55 am
STL
-
MAD
1 stop17h 55m
United Airlines
Deal found 4/27$938
This KLM deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/86:00 am
MAD
-
STL
2 stops17h 15m
Multiple Airlines
Tue 5/125:36 pm
STL
-
MAD
2 stops14h 59m
Multiple Airlines
Deal found 4/24$939
This Delta deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/226:00 am
MAD
-
STL
2 stops22h 09m
Delta
Thu 5/283:11 pm
STL
-
MAD
2 stops17h 24m
Delta
Deal found 4/25$940
This United Airlines deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/46:05 am
MAD
-
STL
2 stops18h 18m
United Airlines
Wed 6/101:05 pm
STL
-
MAD
1 stop10h 45m
United Airlines
Deal found 4/27$941

Find flight deals from Madrid to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Madrid (MAD) to St. Louis (STL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated April 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$928
(United Airlines)

One-way from

$509
(Kiwi.com)

Popular in

December

Cheapest in

May

Average price

$1,312
Provider with most accurate pricing for Madrid Barajas-Lambert-St Louis flight deals.
Search Deals
Provider most trusted by Cheapflights users for Madrid Barajas-Lambert-St Louis flights.
Search Deals
From Madrid Barajas to Lambert-St Louis
Search Deals
One-way flight from Madrid Barajas to Lambert-St Louis
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($124 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($39 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Madrid to St. Louis 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, Cheapflights users made 2,558,603 searches. Data last updated April 27, 2026.
Use the filters below to find and compare flights from Madrid to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

MadridSt. Louis

MAD - STL

MADSTL

Madrid Barajas

Fri 5/8

6:00 am-1:25 pm

1 stop14h 25m

Lambert-St Louis

Tue 5/12

10:25 am-8:05 am

2 stops14h 40m

$928
Quickest round-trip

MadridSt. Louis

MAD - STL

MADSTL

Madrid Barajas

Wed 6/10

5:55 am-1:25 pm

1 stop14h 30m

Lambert-St Louis

Wed 6/17

1:05 pm-6:50 am

1 stop10h 45m

$931

MadridSt. Louis

MAD - STL

MADSTL

Madrid Barajas

Fri 5/22

6:00 am-9:09 pm

2 stops22h 09m

Lambert-St Louis

Thu 5/28

3:11 pm-3:35 pm

2 stops17h 24m

$940

MadridSt. Louis

MAD - STL

MADSTL

Madrid Barajas

Thu 6/4

6:05 am-5:23 pm

2 stops18h 18m

Lambert-St Louis

Wed 6/10

1:05 pm-6:50 am

1 stop10h 45m

$941

MadridSt. Louis

MAD - STL

MADSTL

Madrid Barajas

Mon 6/15

12:45 pm-8:25 pm

1 stop14h 40m

Lambert-St Louis

Sat 9/12

7:01 am-9:00 am

1 stop18h 59m

$948

MadridSt. Louis

MAD - STL

MADSTL

Madrid Barajas

Sun 6/7

10:50 am-11:35 pm

1 stop19h 45m

Lambert-St Louis

Sun 6/14

12:23 pm-9:00 am

1 stop13h 37m

$951
Cheapest one-way

MadridSt. Louis

MAD - STL

MADSTL

Madrid Barajas

Wed 9/2

10:35 am-7:30 pm

1 stop15h 55m

$601

MadridSt. Louis

MAD - STL

MADSTL

Madrid Barajas

Sun 10/18

11:45 am-8:08 pm

1 stop15h 23m

$624

MadridSt. Louis

MAD - STL

MADSTL

Madrid Barajas

Wed 9/2

10:40 am-11:51 pm

2 stops20h 11m

$678

MadridSt. Louis

MAD - STL

MADSTL

Madrid Barajas

Sat 5/9

12:20 pm-7:30 pm

1 stop14h 10m

$685

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/24

Showing 1-10 of 15 resultsSorted by cheapest first
1
2
  • Most accurate provider: When it comes to deals on Madrid-St. Louis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Madrid-St. Louis flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Madrid-St. Louis flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Madrid-St. Louis flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Madrid-St. Louis flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Madrid to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Madrid with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Madrid to St. Louis

What is the cheapest month to book a flight from Madrid to St. Louis?

Currently, May is the cheapest month in which you can book a flight from Madrid to St. Louis (average of $775). Flying from Madrid to St. Louis in December is currently the most expensive (average of $1,483). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost to fly round-trip from Madrid to St. Louis?

Related info for your journey

Find useful and relevant information for your journey from Madrid to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Madrid to St. Louis?

    A quick flight from Madrid to St. Louis can take about 14h 25m. United Airlines provides one of the quickest options available for as low as $928. The distance from Madrid to St. Louis is about 4414 mi.

  • Can I find deals for flights from Madrid to St. Louis that include hotel bookings?

    Yes. In addition to deals on Madrid to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Madrid to St. Louis?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Madrid to St. Louis.

  • Can I find deals for business class flights from Madrid to St. Louis?

    Yes. Cheapflights offers flight deals from Madrid to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Madrid to St. Louis?

    Currently, May is the cheapest month in which you can book a flight from Madrid to St. Louis (average of $775). Flying from Madrid to St. Louis in December is currently the most expensive (average of $1,483). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Edwardsville
O'Fallon
Fenton
Swansea
Fairview Heights
Maryland Heights
Collinsville
Eureka
Wentzville
Glencoe
Chesterfield
Alton
Farmington
Festus

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