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$399+ 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 2/17. Fares are subject to change and may not be available on all flights or dates of travel.
STL — MAD
Jan 9 — Jan 161
Fri 1/9
Fri 1/16
1 adult, Economy
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Cheapflights Tip: The best prices from Lambert-St Louis to Madrid Barajas are usually found in November or February, booked 90 days in advance, depart on a Tuesday or Wednesday and return on a Wednesday

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 December 10, 2025.

This oojo deal was found by Cheapflights users on 12/8. 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.
Mon 12/87:35 pmSTL - MAD
2 stops33h 20mBritish Airways
Wed 12/241:00 pmMAD - STL
1 stop13h 30mBritish Airways
Deal found 12/8$652
This American Airlines deal was found by Cheapflights users on 12/8. 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.
Mon 12/811:50 amSTL - MAD
1 stop15h 30mAmerican Airlines
Wed 12/241:00 pmMAD - STL
1 stop13h 30mAmerican Airlines
Deal found 12/8$659
This Expedia deal was found by Cheapflights users on 12/9. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/1610:13 amSTL - MAD
1 stop12h 32mBritish Airways
Tue 12/231:15 pmMAD - STL
1 stop14h 36mBritish Airways
Deal found 12/9$914
This American Airlines deal was found by Cheapflights users on 12/9. 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.
Tue 12/168:13 amSTL - MAD
1 stop14h 32mAmerican Airlines
Tue 12/231:15 pmMAD - STL
1 stop14h 36mAmerican Airlines
Deal found 12/9$921
This Finnair deal was found by Cheapflights users on 12/8. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/1310:47 amSTL - MAD
1 stop15h 08mMultiple Airlines
Sat 1/1011:30 amMAD - STL
1 stop19h 29mMultiple Airlines
Deal found 12/8$1,002
This Expedia deal was found by Cheapflights users on 12/7. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/84:49 pmSTL - MAD
2 stops37h 31mAer Lingus
Sat 12/1310:40 amMAD - STL
2 stops43h 58mAer Lingus
Deal found 12/7$1,048
This Priceline deal was found by Cheapflights users on 12/7. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/811:50 amSTL - MAD
1 stop10h 55mIberia
Sat 12/1312:00 pmMAD - STL
1 stop14h 05mIberia
Deal found 12/7$1,065
This oojo deal was found by Cheapflights users on 12/7. 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.
Mon 12/85:58 pmSTL - MAD
1 stop28h 47mBritish Airways
Sat 12/136:05 pmMAD - STL
2 stops36h 33mBritish Airways
Deal found 12/7$1,077
This American Airlines deal was found by Cheapflights users on 12/10. 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 12/245:04 amSTL - MAD
1 stop20h 51mAmerican Airlines
Sat 12/2712:00 pmMAD - STL
1 stop14h 31mAmerican Airlines
Deal found 12/10$1,129

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 December 10, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$437
(Kiwi.com)

One-way from

$399
(United Airlines)

Popular in

June

Cheapest in

November

Average price

$765
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. 21% potential increase in price ($242 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($31 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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 December 10, 2025.
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

Thu 2/5

11:22 am-9:15 am

1 stop14h 53m

Madrid Barajas

Thu 2/12

11:15 am-12:05 am

1 stop19h 50m

$437

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Fri 1/9

3:50 pm-4:10 pm

1 stop17h 20m

Madrid Barajas

Fri 1/16

11:15 am-11:59 pm

1 stop19h 44m

$456

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 1/21

11:22 am-9:15 am

1 stop14h 53m

Madrid Barajas

Wed 2/25

5:55 am-10:00 pm

2 stops23h 05m

$469

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Thu 2/5

7:00 am-8:00 am

2 stops18h 00m

Madrid Barajas

Thu 2/12

1:35 pm-9:00 pm

2 stops38h 25m

$472

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Thu 2/19

4:06 pm-4:55 pm

2 stops17h 49m

Madrid Barajas

Wed 2/25

12:40 pm-11:18 pm

1 stop17h 38m

$476

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 1/21

6:00 am-6:30 pm

2 stops29h 30m

Madrid Barajas

Wed 2/25

10:35 am-10:09 pm

2 stops18h 34m

$481

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Sat 3/7

7:10 am-8:05 am

1 stop17h 55m

Madrid Barajas

Sat 3/14

10:05 am-11:42 pm

1 stop19h 37m

$488

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Thu 1/15

2:54 pm-10:20 am

1 stop12h 26m

Madrid Barajas

Mon 1/19

12:40 pm-11:12 pm

1 stop17h 32m

$488

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Tue 3/10

5:59 pm-5:40 pm

2 stops17h 41m

Madrid Barajas

Mon 3/16

10:05 am-11:42 pm

1 stop19h 37m

$492

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Tue 2/17

7:41 am-9:15 am

2 stops18h 34m

$399

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/8

Showing 1-10 of 13 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 December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy2 starsTrust Score*2 stars
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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on St. Louis-Madrid flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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, November is the cheapest month in which you can book a flight from St. Louis to Madrid (average of $526). Flying from St. Louis to Madrid in June is currently the most expensive (average of $906). 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.

What is the cheapest time of day to fly from STL to MAD?

Find hourly flight availability from St. Louis to Madrid. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 10, 2025.

One of the essential ways to save on airfare from St. Louis to Madrid is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight at noon could potentially save you up to 17% on airfare.

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 December 10, 2025.
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
9,094 reviews

Overall

7.4

Crew

8.1

Boarding

7.7

Food

6.6

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.
United Airlines
7.4
Good
9,094 reviews
United Airlines
7.4
Good
9,094 reviews

Overall

7.4

Crew

8.1

Boarding

7.7

Food

6.6

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.
American Airlines
7.2
Good
11,048 reviews
United Airlines
7.4
Good
9,094 reviews

Overall

7.4

Crew

8.1

Boarding

7.7

Food

6.6

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.
Air Canada
7.1
Good
10,514 reviews
United Airlines
7.4
Good
9,094 reviews

Overall

7.4

Crew

8.1

Boarding

7.7

Food

6.6

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.
Iberia
7.0
Good
3,045 reviews
United Airlines
7.4
Good
9,094 reviews

Overall

7.4

Crew

8.1

Boarding

7.7

Food

6.6

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.
British Airways
6.7
Okay
7,573 reviews
United Airlines
7.4
Good
9,094 reviews

Overall

7.4

Crew

8.1

Boarding

7.7

Food

6.6

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.

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 14h 53m. Lufthansa provides one of the quickest options available for as low as $437. 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 ($524), British Airways ($546), 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 40% 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 ($413), Iberia ($417), and United Airlines ($438).

  • 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, November is the cheapest month in which you can book a flight from St. Louis to Madrid (average of $526). Flying from St. Louis to Madrid in June is currently the most expensive (average of $906). 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

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Alternative routes for St. Louis to Madrid

See prices for flight routes from nearby airports that may be better suited for you.
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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 December 10, 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$524Average$762FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$546Average$734FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$578Average$941FlexibilityNo cancel feeOn-time69%
IberiaCheapest$586Average$914FlexibilityNo cancel feeOn-time77%
DeltaCheapest$587Average$788FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$613Average$905FlexibilityNo cancel feeOn-time71%
Air CanadaCheapest$701Average$947FlexibilityNo cancel feeOn-time67%

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