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$369+ 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 9/15. Fares are subject to change and may not be available on all flights or dates of travel.
STL — MAD
Jul 6 — Jul 131
Sun 7/6
Sun 7/13
1 adult, Economy
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Cheapflights Tip: The best prices from Lambert-St Louis to Madrid Barajas are usually found in February or August, booked 56 days in advance, depart on a Tuesday or Wednesday and return on a Wednesday

Cheap 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 July 1, 2025.

Round-trip from

$558
(Gotogate)

One-way from

$369
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$990
From Lambert-St Louis to Madrid Barajas
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One-way flight from Lambert-St Louis to Madrid Barajas
Search Deals
Highest demand for flights based on searches. 20% potential increase in price ($225 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($31 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find 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 July 1, 2025.

This Gotogate deal was found by Cheapflights users on 6/29. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/61:30 pmSTL - MAD
1 stop10h 10mAir Canada
Wed 10/2212:30 pmMAD - STL
1 stop14h 08mAir Canada
Deal found 6/29$558
This eDestinos deal was found by Cheapflights users on 6/29. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/311:57 amSTL - MAD
1 stop14h 28mIberia
Mon 12/81:00 pmMAD - STL
1 stop16h 22mIberia
Deal found 6/29$561
This United Airlines deal was found by Cheapflights users on 6/30. 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 10/71:30 pmSTL - MAD
1 stop10h 10mUnited Airlines
Tue 10/2112:30 pmMAD - STL
2 stops34h 14mUnited Airlines
Deal found 6/30$566
This Delta deal was found by Cheapflights users on 7/1. 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.
Mon 10/67:20 amSTL - MAD
2 stops17h 30mDelta
Thu 10/1612:40 pmMAD - STL
2 stops17h 59mDelta
Deal found 7/1$592
This Lufthansa deal was found by Cheapflights users on 6/30. 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.
Wed 10/812:25 pmSTL - MAD
2 stops22h 10mLufthansa
Fri 10/176:00 amMAD - STL
2 stops16h 44mLufthansa
Deal found 6/30$616
This United deal was found by Cheapflights users on 6/29. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/116:00 amSTL - MAD
1 stop20h 00mMultiple Airlines
Tue 8/2612:45 pmMAD - STL
1 stop14h 15mMultiple Airlines
Deal found 6/29$654

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 July 1, 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

Mon 10/6

1:30 pm-6:40 am

1 stop10h 10m

Madrid Barajas

Wed 10/22

12:30 pm-7:38 pm

1 stop14h 08m

$558

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 12/3

11:57 am-9:25 am

1 stop14h 28m

Madrid Barajas

Mon 12/8

1:00 pm-10:22 pm

1 stop16h 22m

$561

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Tue 10/7

1:30 pm-6:40 am

1 stop10h 10m

Madrid Barajas

Tue 10/21

12:30 pm-3:44 pm

2 stops34h 14m

$566

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Mon 10/6

7:20 am-7:50 am

2 stops17h 30m

Madrid Barajas

Thu 10/16

12:40 pm-11:39 pm

2 stops17h 59m

$592

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 10/8

12:25 pm-5:35 pm

2 stops22h 10m

Madrid Barajas

Fri 10/17

6:00 am-3:44 pm

2 stops16h 44m

$616

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Mon 8/11

6:00 am-9:00 am

1 stop20h 00m

Madrid Barajas

Tue 8/26

12:45 pm-8:00 pm

1 stop14h 15m

$654

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Mon 9/15

2:02 pm-4:40 pm

3 stops43h 38m

$369

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 9/10

7:23 am-9:55 am

2 stops19h 32m

$521

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 9/10

8:17 am-5:30 am

1 stop14h 13m

$583

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 9/17

1:03 pm-12:50 pm

2 stops16h 47m

$2,085

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/1

Showing 1-10 of 12 results
1
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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

How far ahead should I book a flight from St. Louis to Madrid?

Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Madrid. Price data was last updated on June 27, 2025.

The best time to book flights from St. Louis to Madrid is 56 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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 $543). Flying from St. Louis to Madrid in June is currently the most expensive (average of $1,054). 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 July 1, 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 18% 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 July 1, 2025.
Get a feel of what it's like to fly with Delta, Finnair, and United Airlines 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.
Delta
8.0
Very good
7,973 reviews

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.9

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,973 reviews
Delta
8.0
Very good
7,973 reviews

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.9

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Finnair
7.6
Good
1,301 reviews
Delta
8.0
Very good
7,973 reviews

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.9

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,858 reviews
Delta
8.0
Very good
7,973 reviews

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.9

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,973 reviews

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.9

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Air Canada
7.1
Good
9,665 reviews
Delta
8.0
Very good
7,973 reviews

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.9

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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.

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

    According to our current data, Air Canada ($558), Iberia ($561), and United Airlines ($566) offers the cheapest pricing from St. Louis to Madrid. You may be able to fly from St. Louis to Madrid for 37% 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 Aer Lingus ($521), American Airlines ($583), and Iberia ($2,085).

  • 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 $543). Flying from St. Louis to Madrid in June is currently the most expensive (average of $1,054). 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
Segovia
Fuenlabrada

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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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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 July 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$545Average$794FlexibilityNo cancel feeOn-time70%
DeltaCheapest$556Average$859FlexibilityNo cancel feeOn-timeN/A
IberiaCheapest$576Average$913FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$583Average$928FlexibilityNo cancel feeOn-time71%
LufthansaCheapest$615Average$758FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$617Average$928FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$701Average$947FlexibilityNo cancel feeOn-time67%

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