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

According to our current data, Lufthansa ($456), British Airways ($550), and Delta ($551) offers the cheapest pricing from St. Louis to Madrid. You may be able to fly from St. Louis to Madrid for 51% 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 ($470), British Airways ($558), and American Airlines ($618).

What is the cheapest day to fly from St. Louis to Madrid?

Travelers seeking maximum savings on their St. Louis to Madrid flight should consider departing on Wednesday afternoons when fares are most often at their lowest. Saturday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

What are the most popular airlines that fly from St. Louis to Madrid?

American Airlines, Air Canada and British Airways are the most popular airlines when flying from St. Louis to Madrid.

What is the cheapest day to fly round-trip from St. Louis to Madrid?

Sunday flights are found to be more expensive to fly from St. Louis to Madrid. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Madrid.

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

Travelers have found it’s best to book a flight 57 days in advance to save up to 73% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 57 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from St. Louis to Madrid 1-2 weeks in advance for as low as $805, or $1,374 for flights within the next 24 hours.

What is the cheapest month to fly from St. Louis to Madrid?

The best pricing can be found in the month of February. Prices to Madrid from St. Louis average $933. You can even find prices in February for less than $933, as users have found deals to Madrid from as low as $542. The month of June appears to be one of the more expensive times to travel to Madrid from St. Louis. Flying in the targeted month can save you up to 40%.

Most accurate provider : When it comes to deals on St. Louis-Madrid flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on St. Louis-Madrid flight deals on Cheapflights vs. AranGrant >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 AranGrant the most. AranGrant 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.

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.

$350+ Flights from St. Louis to Madrid, Spain

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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.

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

Most accurate provider	AranGrant 3 stars
Most trusted provider	AranGrant 3 stars
Round-trip from	$456 (Lufthansa)
One-way from	$350 (Kiwi.com)
Popular in	June
Cheapest in	February
Average price	$1,247

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. 25% potential increase in price ($315 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($35 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in May 2025

Search Deals

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 May 1, 2025.

Sun 10/1211:46 amSTL - MAD

1 stop10h 54mMultiple Airlines

Wed 10/2211:35 amMAD - STL

1 stop15h 48mMultiple Airlines

Deal found 4/30

$546

Sun 10/128:01 pmSTL - MAD

2 stops14h 34mBritish Airways

Wed 10/221:45 pmMAD - STL

1 stop13h 34mBritish Airways

Deal found 5/1

$550

Mon 10/63:30 pmSTL - MAD

1 stop11h 05mDelta

Tue 10/2112:40 pmMAD - STL

2 stops26h 30mDelta

Deal found 4/30

$551

Sun 10/1212:28 pmSTL - MAD

2 stops35h 12mUnited Airlines

Wed 10/2212:45 pmMAD - STL

2 stops33h 53mUnited Airlines

Deal found 4/30

$563

Sun 10/124:05 pmSTL - MAD

2 stops31h 35mAir Canada

Wed 10/2212:45 pmMAD - STL

2 stops32h 34mAir Canada

Deal found 5/1

$565

Sun 10/58:26 amSTL - MAD

1 stop16h 29mIberia

Sat 10/181:45 pmMAD - STL

1 stop13h 34mIberia

Deal found 4/30

$572

Wed 10/812:28 pmSTL - MAD

2 stops22h 07mLufthansa

Tue 10/2111:45 amMAD - STL

2 stops34h 53mLufthansa

Deal found 4/30

$670

Tue 8/267:23 amSTL - MAD

2 stops19h 32mAer Lingus

Tue 9/910:35 amMAD - STL

2 stops15h 33mAer Lingus

Deal found 4/30

$803

Tue 8/269:45 amSTL - MAD

1 stop12h 55mAmerican Airlines

Tue 9/91:00 pmMAD - STL

1 stop17h 23mAmerican Airlines

Deal found 4/29

$831

Thu 10/92:18 pmSTL - MAD

2 stops14h 02mAir France

Mon 10/2010:05 amMAD - STL

1 stop14h 57mAir France

Deal found 4/30

$883

Fri 10/102:18 pmSTL - MAD

2 stops14h 47mKLM

Sat 10/1810:05 amMAD - STL

1 stop14h 57mKLM

Deal found 4/30

$1,135

Best flights from St. Louis to Madrid
Discover carefully curated flight deals from St. Louis to Madrid that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 1, 2025.

Sun 10/123:30 pmSTL - MAD

1 stop21h 20mLufthansa

Wed 10/2210:50 amMAD - STL

1 stop15h 49mLufthansa

Deal found 4/29

$456

Sun 10/1211:46 amSTL - MAD

1 stop10h 54mMultiple Airlines

Wed 10/2211:35 amMAD - STL

1 stop15h 48mMultiple Airlines

Deal found 4/30

$546

Sun 10/128:01 pmSTL - MAD

2 stops14h 34mBritish Airways

Wed 10/221:45 pmMAD - STL

1 stop13h 34mBritish Airways

Deal found 4/30

$550

Mon 10/63:30 pmSTL - MAD

1 stop11h 05mDelta

Fri 10/1712:40 pmMAD - STL

2 stops26h 30mDelta

Deal found 4/30

$551

Sun 10/1212:28 pmSTL - MAD

2 stops35h 12mUnited Airlines

Wed 10/2212:45 pmMAD - STL

2 stops33h 53mUnited Airlines

Deal found 4/30

$563

Sun 10/124:05 pmSTL - MAD

2 stops31h 35mAir Canada

Wed 10/2212:45 pmMAD - STL

2 stops32h 34mAir Canada

Deal found 4/30

$565

Sun 10/58:26 amSTL - MAD

1 stop16h 29mIberia

Sat 10/181:45 pmMAD - STL

1 stop13h 34mIberia

Deal found 4/30

$572

Tue 8/269:45 amSTL - MAD

1 stop12h 55mAmerican Airlines

Tue 9/91:00 pmMAD - STL

1 stop17h 23mAmerican Airlines

Deal found 4/29

$831

Sat 10/111:30 pmSTL - MAD

2 stops21h 15mScandinavian Airlines

Mon 10/2012:55 pmMAD - STL

2 stops41h 44mScandinavian Airlines

Deal found 4/29

$867

Thu 10/92:18 pmSTL - MAD

2 stops14h 02mAir France

Mon 10/2010:05 amMAD - STL

1 stop14h 57mAir France

Deal found 4/30

$883

Thu 10/91:54 pmSTL - MAD

1 stop12h 11mFinnair

Tue 10/214:00 pmMAD - STL

1 stop33h 18mFinnair

Deal found 4/29

$891

Tue 5/136:00 amSTL - MAD

2 stops20h 55mAer Lingus

Mon 5/196:55 amMAD - STL

2 stops21h 57mAer Lingus

Deal found 4/30

$1,128

Last-minute flights from St. Louis to Madrid
Discover last-minute flight deals from St. Louis to Madrid. Data last updated May 1, 2025 and is based on user searches.

Tue 5/136:00 amSTL - MAD

2 stops20h 55mAer Lingus

Mon 5/196:55 amMAD - STL

2 stops21h 57mAer Lingus

Deal found 4/30

$1,128

Tue 5/134:15 pmSTL - MAD

1 stop14h 10mBritish Airways

Mon 5/194:40 pmMAD - STL

1 stop12h 12mBritish Airways

Deal found 4/30

$1,969

Mon 5/261:30 pmSTL - MAD

1 stop10h 10mAir Canada

Tue 6/1012:45 pmMAD - STL

1 stop14h 13mAir Canada

Deal found 4/30

$1,074

Mon 5/266:00 amSTL - MAD

2 stops18h 50mDelta

Wed 6/410:05 amMAD - STL

1 stop17h 34mDelta

Deal found 4/30

$1,081

Mon 5/265:27 pmSTL - MAD

2 stops17h 08mLufthansa

Mon 6/92:55 pmMAD - STL

2 stops31h 35mLufthansa

Deal found 4/30

$1,164

Mon 5/2610:45 amSTL - MAD

2 stops15h 50mKLM

Sat 6/710:05 amMAD - STL

1 stop20h 35mKLM

Deal found 4/30

$1,190

Mon 5/267:30 pmSTL - MAD

1 stop10h 55mIberia

Mon 6/94:40 pmMAD - STL

1 stop14h 14mIberia

Deal found 4/30

$1,374

Tue 5/271:30 pmSTL - MAD

1 stop10h 10mUnited Airlines

Tue 6/1012:45 pmMAD - STL

1 stop14h 13mUnited Airlines

Deal found 4/30

$1,102

Thu 5/2912:15 pmSTL - MAD

3 stops35h 25mMultiple Airlines

Thu 6/510:05 amMAD - STL

3 stops33h 05mMultiple Airlines

Deal found 4/30

$1,000

Thu 5/297:10 amSTL - MAD

1 stop15h 20mAmerican Airlines

Thu 6/54:15 pmMAD - STL

1 stop14h 44mAmerican Airlines

Deal found 4/30

$1,146

Thu 5/291:09 pmSTL - MAD

2 stops15h 11mAir France

Thu 6/510:05 amMAD - STL

1 stop14h 56mAir France

Deal found 4/30

$1,165

Thu 5/2910:36 amSTL - MAD

2 stops21h 24mFinnair

Fri 6/611:35 amMAD - STL

1 stop19h 19mFinnair

Deal found 4/30

$1,616

One-way flights from St. Louis to Madrid
Search for one-way flight options from St. Louis to Madrid. Find affordable one-way fares based on user searches. Data last updated May 1, 2025.

Thu 7/105:40 pmSTL - MAD

3 stops46h 05mMultiple Airlines

Deal found 4/29

$350

Tue 9/97:23 amSTL - MAD

2 stops19h 32mAer Lingus

Deal found 4/30

$470

Tue 9/912:07 pmSTL - MAD

1 stop13h 58mBritish Airways

Deal found 4/30

$558

Sat 5/174:52 pmSTL - MAD

1 stop14h 28mAmerican Airlines

Deal found 4/29

$618

Sat 5/177:30 amSTL - MAD

2 stops16h 10mAir Canada

Deal found 4/30

$645

Tue 6/249:28 amSTL - MAD

1 stop17h 07mKLM

Deal found 5/1

$808

Tue 6/241:30 pmSTL - MAD

1 stop10h 10mUnited Airlines

Deal found 4/30

$823

Wed 9/171:10 pmSTL - MAD

1 stop11h 55mBrussels Airlines

Deal found 4/30

$3,137

Cheapflights Fare Finder

Use the filters below to find and compare flights from St. Louis to Madrid that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Sun 10/12

11:46 am-5:40 am

1 stop10h 54m

Madrid Barajas

Wed 10/22

11:35 am-8:23 pm

1 stop15h 48m

$546

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Sun 10/12

8:01 pm-5:35 pm

2 stops14h 34m

Madrid Barajas

Wed 10/22

1:45 pm-8:19 pm

1 stop13h 34m

$550

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Mon 10/6

3:30 pm-9:35 am

1 stop11h 05m

Madrid Barajas

Tue 10/21

12:40 pm-8:10 am

2 stops26h 30m

$551

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Sun 10/12

12:28 pm-6:40 am

2 stops35h 12m

Madrid Barajas

Wed 10/22

12:45 pm-3:38 pm

2 stops33h 53m

$563

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Sun 10/12

4:05 pm-6:40 am

2 stops31h 35m

Madrid Barajas

Wed 10/22

12:45 pm-2:19 pm

2 stops32h 34m

$565

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Sun 10/5

8:26 am-7:55 am

1 stop16h 29m

Madrid Barajas

Sat 10/18

1:45 pm-8:19 pm

1 stop13h 34m

$572

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Wed 10/8

12:28 pm-5:35 pm

2 stops22h 07m

Madrid Barajas

Tue 10/21

11:45 am-3:38 pm

2 stops34h 53m

$670

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Tue 8/26

7:23 am-9:55 am

2 stops19h 32m

Madrid Barajas

Tue 9/9

10:35 am-7:08 pm

2 stops15h 33m

$803

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Tue 8/26

9:45 am-5:40 am

1 stop12h 55m

Madrid Barajas

Tue 9/9

1:00 pm-11:23 pm

1 stop17h 23m

$831

St. LouisMadrid

STL - MAD

STLMAD

Lambert-St Louis

Thu 10/9

2:18 pm-11:20 am

2 stops14h 02m

Madrid Barajas

Mon 10/20

10:05 am-6:02 pm

1 stop14h 57m

$883

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Showing 1-10 of 19 results

Compare providers for flights from St. Louis to Madrid

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 May.

Provider	Price Accuracy	Trust Score*
AranGrant	Price Accuracy3 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*2 stars
Expedia	Price Accuracy1 star	Trust Score*3 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars
Ovago	Price Accuracy2 stars	Trust 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 AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on St. Louis-Madrid flight deals on Cheapflights vs. AranGrant >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 AranGrant the most. AranGrant 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

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

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 $1,086). 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?

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

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

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

Delta

8.0

Very good

7,934 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta

8.0

Very good

7,934 reviews

Delta

8.0

Very good

7,934 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM

7.8

Good

1,334 reviews

Delta

8.0

Very good

7,934 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Finnair

7.6

Good

1,275 reviews

Delta

8.0

Very good

7,934 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Air France

7.4

Good

1,446 reviews

Delta

8.0

Very good

7,934 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

United Airlines

7.4

Good

8,696 reviews

Delta

8.0

Very good

7,934 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

What are the cheapest airlines flying from St. Louis to Madrid round-trip?
According to our current data, Lufthansa ($456), British Airways ($550), and Delta ($551) offers the cheapest pricing from St. Louis to Madrid. You may be able to fly from St. Louis to Madrid for 51% 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 ($470), British Airways ($558), and American Airlines ($618).
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 $1,086). 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

Segovia

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Alternative routes for St. Louis to Madrid

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Other flights to Madrid

Top 7 airlines flying from St. Louis to Madrid

Airline	Cheapest	Average	Flexibility	On-time
British Airways	Cheapest$545	Average$849	FlexibilityNo cancel fee	On-time70%
Iberia	Cheapest$553	Average$894	FlexibilityNo cancel fee	On-time77%
American Airlines	Cheapest$583	Average$934	FlexibilityNo cancel fee	On-time71%
Delta	Cheapest$593	Average$865	FlexibilityNo cancel fee	On-timeN/A
Lufthansa	Cheapest$615	Average$762	FlexibilityNo cancel fee	On-time76%
Air Canada	Cheapest$670	Average$1,003	FlexibilityNo cancel fee	On-time67%
United Airlines	Cheapest$676	Average$914	FlexibilityNo cancel fee	On-time69%

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$350+ 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 7/10. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from St. Louis to Madrid with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

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

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from St. Louis to Madrid

Cheapest flights from St. Louis to MadridExplore 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 May 1, 2025.

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 May 1, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from St. Louis to Madrid that are best for you.

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 May.

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.

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 April 25, 2025.

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

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 May 1, 2025.

Rainfall in Madrid by month

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

Temperature in Madrid by month

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

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 May 1, 2025.

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?

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

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

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

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

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

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Alternative routes for St. Louis to Madrid

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Top 7 airlines flying from St. Louis to Madrid

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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 May 1, 2025.