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$433+ 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 7/4. Fares are subject to change and may not be available on all flights or dates of travel.
STL — MAD
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 June 12, 2025.

Round-trip from

$643
(United Airlines)

One-way from

$433
(Mytrip)

Popular in

June

Cheapest in

February

Average price

$1,227
From Lambert-St Louis to Madrid Barajas
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One-way flight from Lambert-St Louis to Madrid Barajas
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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 ($30 potential savings vs. average RT price).
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Average for round-trip flights in June 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 June 12, 2025.

This United Airlines deal was found by Cheapflights users on 6/12. 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.
Mon 10/61:30 pmSTL - MAD
1 stop10h 10mUnited Airlines
Fri 10/1712:45 pmMAD - STL
2 stops29h 04mUnited Airlines
Deal found 6/12$559
This Air Canada deal was found by Cheapflights users on 6/11. 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 10/113:23 pmSTL - MAD
2 stops32h 17mAir Canada
Wed 10/2212:30 pmMAD - STL
2 stops34h 14mAir Canada
Deal found 6/11$570
This Iberia deal was found by Cheapflights users on 6/11. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/81:54 pmSTL - MAD
1 stop12h 11mIberia
Thu 10/161:45 pmMAD - STL
1 stop13h 34mIberia
Deal found 6/11$586
This Delta deal was found by Cheapflights users on 6/11. 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.
Wed 10/86:45 amSTL - MAD
2 stops18h 05mDelta
Wed 10/2212:40 pmMAD - STL
2 stops14h 55mDelta
Deal found 6/11$591
This Lufthansa deal was found by Cheapflights users on 6/10. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/123:30 pmSTL - MAD
1 stop21h 20mLufthansa
Mon 10/201:05 pmMAD - STL
2 stops33h 39mLufthansa
Deal found 6/10$632
This Booking.com deal was found by Cheapflights users on 6/9. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/188:00 amSTL - MAD
2 stops15h 40mMultiple Airlines
Mon 8/255:05 pmMAD - STL
2 stops29h 39mMultiple Airlines
Deal found 6/9$682
This Gurufare deal was found by Cheapflights users on 6/10. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/317:41 pmSTL - MAD
1 stop30h 24mBritish Airways
Sun 12/217:40 amMAD - STL
2 stops21h 22mBritish Airways
Deal found 6/10$766
This KLM deal was found by Cheapflights users on 6/10. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/82:18 pmSTL - MAD
2 stops14h 47mKLM
Sun 10/196:00 amMAD - STL
2 stops17h 00mKLM
Deal found 6/10$838
This Finnair deal was found by Cheapflights users on 6/11. 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.
Wed 10/81:54 pmSTL - MAD
1 stop12h 11mFinnair
Fri 10/174:00 pmMAD - STL
1 stop33h 18mFinnair
Deal found 6/11$864
This American Airlines deal was found by Cheapflights users on 6/10. 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.
Tue 7/11:24 pmSTL - MAD
1 stop13h 11mAmerican Airlines
Wed 7/91:00 pmMAD - STL
1 stop17h 59mAmerican Airlines
Deal found 6/10$911

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 June 12, 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

Fri 10/17

12:45 pm-10:49 am

2 stops29h 04m

$559

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Sat 10/11

3:23 pm-6:40 am

2 stops32h 17m

Madrid Barajas

Tue 10/21

12:30 pm-2:27 pm

2 stops32h 57m

$570

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 10/8

1:54 pm-9:05 am

1 stop12h 11m

Madrid Barajas

Thu 10/16

1:45 pm-8:19 pm

1 stop13h 34m

$586

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 10/8

6:45 am-7:50 am

2 stops18h 05m

Madrid Barajas

Wed 10/22

12:40 pm-8:35 pm

2 stops14h 55m

$591

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Sun 10/12

3:30 pm-7:50 pm

1 stop21h 20m

Madrid Barajas

Mon 10/20

1:05 pm-3:44 pm

2 stops33h 39m

$632

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Mon 8/18

8:00 am-6:40 am

2 stops15h 40m

Madrid Barajas

Mon 8/25

5:05 pm-3:44 pm

2 stops29h 39m

$682

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Sun 8/31

7:41 pm-9:05 am

1 stop30h 24m

Madrid Barajas

Sun 12/21

7:40 am-10:02 pm

2 stops21h 22m

$766

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 10/8

2:18 pm-12:05 pm

2 stops14h 47m

Madrid Barajas

Sun 10/19

6:00 am-4:00 pm

2 stops17h 00m

$838

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 10/8

1:54 pm-9:05 am

1 stop12h 11m

Madrid Barajas

Fri 10/17

4:00 pm-6:18 pm

1 stop33h 18m

$864

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Tue 7/1

1:24 pm-9:35 am

1 stop13h 11m

Madrid Barajas

Wed 7/9

1:00 pm-11:59 pm

1 stop17h 59m

$911

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Showing 1-10 of 20 results
1
2

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 9, 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 $1,057). 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 June 12, 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.

Rainfall in Madrid by month

Plan your trip to Madrid by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Madrid ranges from 0.4 - 2.4 inches per month. November is typically the wettest month, when rainfall can reach 2.4 in. July is typically the driest time to visit Madrid when rainfall is around 0.4 in.

Temperature in Madrid by month

Plan your trip to Madrid by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Madrid, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 77.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 41.0 F).

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 June 12, 2025.
Read reviews from past customers who have flown Delta, KLM and Finnair from St. Louis to Madrid. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,946 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Entertainment

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
7,946 reviews
Delta
8.0
Very good
7,946 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Entertainment

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!
KLM
7.8
Good
1,358 reviews
Delta
8.0
Very good
7,946 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Entertainment

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
1,290 reviews
Delta
8.0
Very good
7,946 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Entertainment

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
8,790 reviews
Delta
8.0
Very good
7,946 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Entertainment

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!
Scandinavian Airlines
7.3
Good
1,387 reviews
Delta
8.0
Very good
7,946 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Entertainment

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, United Airlines ($643), Iberia ($660), and Air Canada ($669) offers the cheapest pricing from St. Louis to Madrid. You may be able to fly from St. Louis to Madrid for 28% 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 United Airlines ($578), Delta ($643), and Iberia ($696).

  • 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 $1,057). 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.
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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$545Average$812FlexibilityNo cancel feeOn-time70%
IberiaCheapest$566Average$917FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$583Average$929FlexibilityNo cancel feeOn-time71%
LufthansaCheapest$615Average$762FlexibilityNo cancel feeOn-time76%
DeltaCheapest$630Average$840FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$647Average$954FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$701Average$947FlexibilityNo cancel feeOn-time67%

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