HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Madrid

$279+ Cheap flights from St. Louis (STL) to Madrid, Spain (MAD)

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 5/16. Fares are subject to change and may not be available on all flights or dates of travel.
STL — MAD
Feb 23 — Mar 21
Mon 2/23
Mon 3/2
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from St. Louis to Madrid with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from St. Louis to Madrid

Cheapest flights from St. Louis to Madrid
Explore the most affordable flight options available from St. Louis to Madrid. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 24, 2026.

This Air Canada deal was found by Cheapflights users on 1/22. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/146:45 pm
STL
-
MAD
2 stops30h 15m
Air Canada
Wed 12/91:35 pm
MAD
-
STL
2 stops32h 46m
Air Canada
Deal found 1/22$423
This Flighttix deal was found by Cheapflights users on 1/22. 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 Flighttix is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/16:40 pm
STL
-
MAD
2 stops30h 20m
Air Canada
Tue 2/171:35 pm
MAD
-
STL
2 stops39h 05m
Air Canada
Deal found 1/22$424
This oojo deal was found by Cheapflights users on 1/21. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/1011:59 am
STL
-
MAD
2 stops17h 56m
British Airways
Tue 3/171:00 pm
MAD
-
STL
1 stop16h 48m
British Airways
Deal found 1/21$426
This British Airways deal was found by Cheapflights users on 1/22. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/111:55 am
STL
-
MAD
1 stop14h 30m
British Airways
Tue 2/1712:40 pm
MAD
-
STL
1 stop29h 21m
British Airways
Deal found 1/22$431
This British Airways deal was found by Cheapflights users on 1/21. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/29:37 am
STL
-
MAD
2 stops19h 18m
British Airways
Thu 3/1911:25 am
MAD
-
STL
1 stop27h 30m
British Airways
Deal found 1/21$436
This British Airways deal was found by Cheapflights users on 1/21. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/22:00 pm
STL
-
MAD
1 stop11h 55m
British Airways
Wed 3/1812:30 pm
MAD
-
STL
1 stop35h 37m
British Airways
Deal found 1/21$439
This American Airlines deal was found by Cheapflights users on 1/22. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/46:52 am
STL
-
MAD
1 stop15h 53m
American Airlines
Wed 3/41:15 pm
MAD
-
STL
2 stops17h 33m
American Airlines
Deal found 1/22$444
This British Airways deal was found by Cheapflights users on 1/22. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1011:51 am
STL
-
MAD
2 stops22h 04m
British Airways
Tue 12/81:15 pm
MAD
-
STL
1 stop14h 06m
British Airways
Deal found 1/22$446
This Air Canada deal was found by Cheapflights users on 1/21. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/37:41 am
STL
-
MAD
2 stops17h 19m
Air Canada
Mon 3/1612:40 pm
MAD
-
STL
2 stops38h 27m
Air Canada
Deal found 1/21$447
This British Airways deal was found by Cheapflights users on 1/21. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/42:19 pm
STL
-
MAD
2 stops14h 36m
British Airways
Tue 3/178:50 pm
MAD
-
STL
2 stops26h 23m
British Airways
Deal found 1/21$448
This British Airways deal was found by Cheapflights users on 1/22. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/146:45 pm
STL
-
MAD
1 stop28h 00m
British Airways
Fri 12/1112:40 pm
MAD
-
STL
1 stop13h 50m
British Airways
Deal found 1/22$449

Find flight deals from St. Louis to Madrid

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Madrid (MAD). 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 January 24, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$424
(United Airlines)

One-way from

$279
(FlightHub)

Popular in

June

Cheapest in

November

Average price

$741
Provider with most accurate pricing for Lambert-St Louis-Madrid Barajas flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-Madrid Barajas flights.
Search Deals
From Lambert-St Louis to Madrid Barajas
Search Deals
One-way flight from Lambert-St Louis to Madrid Barajas
Search Deals
Highest demand for flights based on searches. 23% potential increase in price ($256 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($32 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated January 24, 2026.
Use the filters below to find and compare flights from St. Louis to Madrid that are best for you.

Fly from

St. Louis

Fly to

Madrid

Route

Depart

Return

Price

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 2/4

10:10 am-9:15 am

2 stops16h 05m

Madrid Barajas

Wed 3/4

1:35 pm-9:07 pm

2 stops38h 32m

$424

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Mon 3/2

6:36 pm-4:55 pm

2 stops15h 19m

Madrid Barajas

Tue 3/17

12:00 pm-8:51 am

1 stop26h 51m

$436

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Tue 3/3

6:31 pm-8:00 pm

2 stops18h 29m

Madrid Barajas

Tue 3/17

1:00 pm-11:48 pm

1 stop16h 48m

$436

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Tue 3/3

5:52 pm-5:45 am

1 stop28h 53m

Madrid Barajas

Thu 3/19

11:25 am-8:55 am

1 stop27h 30m

$439

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Mon 3/2

2:00 pm-8:55 am

1 stop11h 55m

Madrid Barajas

Wed 3/18

12:30 pm-6:07 pm

1 stop35h 37m

$439

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Tue 3/3

2:06 pm-5:45 am

1 stop32h 39m

Madrid Barajas

Wed 3/18

12:30 pm-6:07 pm

1 stop35h 37m

$439

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Mon 3/2

7:41 am-8:00 am

2 stops17h 19m

Madrid Barajas

Tue 3/17

12:40 pm-2:42 pm

2 stops32h 02m

$447

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 3/4

2:19 pm-11:55 am

2 stops14h 36m

Madrid Barajas

Tue 3/17

8:50 pm-5:13 pm

2 stops26h 23m

$448

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 2/25

9:55 am-9:15 am

2 stops16h 20m

Madrid Barajas

Sun 3/1

5:55 am-1:55 pm

1 stop15h 00m

$460

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 3/4

8:17 am-4:40 pm

2 stops25h 23m

Madrid Barajas

Wed 3/18

5:55 am-2:55 pm

1 stop15h 00m

$482

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/21

Showing 1-10 of 17 results
1
2

Compare providers for flights from St. Louis to Madrid

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Madrid in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
OvagoPrice Accuracy2 starsTrust Score*2 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
AranGrantPrice Accuracy2 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on St. Louis-Madrid flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Madrid flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Madrid flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on St. Louis-Madrid flights, Cheapflights users trust Expedia the most. Expedia 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 St. Louis-Madrid 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 St. Louis to Madrid

Have a flexible travel schedule? Discover the best time to fly to Madrid from St. Louis 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 St. Louis to Madrid

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

Currently, January is the cheapest month in which you can book a flight from St. Louis to Madrid (average of $488). Flying from St. Louis to Madrid in June is currently the most expensive (average of $907). 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.

Reviews of airlines servicing Madrid

Get insights into the airlines that provide service to Madrid. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Madrid. Reviews last updated January 24, 2026.
Get a feel of what it's like to fly with United Airlines, American Airlines, and Air Canada from St. Louis to Madrid by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,193 reviews

Crew

8.1

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Overall

7.4

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
9,193 reviews
United Airlines
7.4
Good
9,193 reviews

Crew

8.1

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Overall

7.4

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
American Airlines
7.2
Good
11,193 reviews
United Airlines
7.4
Good
9,193 reviews

Crew

8.1

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Overall

7.4

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
Air Canada
7.1
Good
10,652 reviews
United Airlines
7.4
Good
9,193 reviews

Crew

8.1

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Overall

7.4

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
Iberia
7.0
Good
3,098 reviews
United Airlines
7.4
Good
9,193 reviews

Crew

8.1

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Overall

7.4

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
British Airways
6.7
Okay
7,694 reviews
United Airlines
7.4
Good
9,193 reviews

Crew

8.1

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Overall

7.4

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Madrid. 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 St. Louis to Madrid?

    A quick flight from St. Louis to Madrid can take about 15h 19m. United Airlines provides one of the quickest options available for as low as $436. The distance between St. Louis and Madrid is about 4414 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from St. Louis to Madrid round-trip?

    According to our current data, Lufthansa ($482), British Airways ($516), and United Airlines ($578) offers the cheapest pricing from St. Louis to Madrid. You may be able to fly from St. Louis to Madrid for 43% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from St. Louis to Madrid one-way?

    The cheapest airlines for a one-way flight from St. Louis to Madrid are American Airlines ($322), United Airlines ($399), and Iberia ($441).

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

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

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

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

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

    Yes. Cheapflights offers flight deals from St. Louis to Madrid 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 St. Louis to Madrid?

    Currently, January is the cheapest month in which you can book a flight from St. Louis to Madrid (average of $488). Flying from St. Louis to Madrid in June is currently the most expensive (average of $907). 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 Madrid?

Book flights to Madrid if you plan to visit one of these locations
Getafe

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for St. Louis to Madrid

See prices for flight routes from nearby airports that may be better suited for you.
Kansas City to Madrid flights
Springfield to Madrid flights
Columbia to Madrid flights

Top 7 airlines flying from St. Louis to Madrid

Discover the top 7 airlines that operate flights from St. Louis to Madrid. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 24, 2026.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$482Average$765FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$516Average$726FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$578Average$942FlexibilityNo cancel feeOn-time69%
DeltaCheapest$580Average$788FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$585Average$864FlexibilityNo cancel feeOn-time71%
IberiaCheapest$586Average$894FlexibilityNo cancel feeOn-time77%
Air CanadaCheapest$701Average$947FlexibilityNo cancel feeOn-time67%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.