$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 8/23. Fares are subject to change and may not be available on all flights or dates of travel.
STL — MAD
Aug 16 — Aug 231
Round-trip
1 adult, Economy
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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
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Best
Last-minute
One-way
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 July 17, 2026.
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 17, 2026.
This United Airlines deal was found by Cheapflights users on 7/13. 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.
Sun 10/412:10 pm
STL
- MAD
1 stop11h 40m
United Airlines
Wed 10/1412:45 pm
MAD
- STL
2 stops30h 28m
United Airlines
Deal found 7/13![United Airlines logo]()
$709
This United Airlines deal was found by Cheapflights users on 7/13. 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.
Wed 10/77:30 am
STL
- MAD
1 stop18h 30m
United Airlines
Wed 10/2112:45 pm
MAD
- STL
2 stops33h 58m
United Airlines
Deal found 7/13![United Airlines logo]()
$710
This United Airlines deal was found by Cheapflights users on 7/14. 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.
Sun 10/1812:10 pm
STL
- MAD
1 stop11h 40m
United Airlines
Wed 10/2112:45 pm
MAD
- STL
2 stops30h 28m
United Airlines
Deal found 7/14![United Airlines logo]()
$714
This United Airlines deal was found by Cheapflights users on 7/13. 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 9/287:30 am
STL
- MAD
1 stop18h 30m
United Airlines
Fri 10/91:30 pm
MAD
- STL
2 stops29h 45m
United Airlines
Deal found 7/13![United Airlines logo]()
$715
This oojo deal was found by Cheapflights users on 7/16. 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.
Sun 10/49:40 pm
STL
- MAD
1 stop12h 50m
British Airways
Wed 10/143:25 pm
MAD
- STL
1 stop15h 12m
British Airways
Deal found 7/16![British Airways logo]()
$717
This Justfly.com deal was found by Cheapflights users on 7/13. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/412:10 pm
STL
- MAD
1 stop11h 40m
Multiple Airlines
Wed 10/145:55 am
MAD
- STL
1 stop14h 30m
Multiple Airlines
Deal found 7/13![Multiple Airlines logo]()
$719
This United Airlines deal was found by Cheapflights users on 7/13. 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.
Wed 10/2112:20 pm
STL
- MAD
1 stop13h 40m
United Airlines
Fri 10/306:00 am
MAD
- STL
1 stop14h 45m
United Airlines
Deal found 7/13![United Airlines logo]()
$720
Best flights from St. Louis to MadridDiscover 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 July 17, 2026.
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 July 17, 2026.
This United Airlines deal was found by Cheapflights users on 7/16. 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.
Wed 11/1112:05 pm
STL
- MAD
1 stop14h 10m
United Airlines
Tue 11/246:25 am
MAD
- STL
2 stops17h 31m
United Airlines
Deal found 7/16![United Airlines logo]()
$731
This KLM deal was found by Cheapflights users on 7/13. 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.
Mon 10/195:28 pm
STL
- MAD
1 stop11h 47m
KLM
Mon 11/26:05 am
MAD
- STL
2 stops17h 33m
KLM
Deal found 7/13![KLM logo]()
$822
This Delta deal was found by Cheapflights users on 7/17. 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 10/196:00 pm
STL
- MAD
2 stops14h 35m
Delta
Mon 11/211:55 am
MAD
- STL
1 stop14h 51m
Delta
Deal found 7/17![Delta logo]()
$824
This Scandinavian Airlines deal was found by Cheapflights users on 7/15. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/131:30 pm
STL
- MAD
2 stops19h 40m
Scandinavian Airlines
Fri 12/186:05 am
MAD
- STL
3 stops24h 34m
Scandinavian Airlines
Deal found 7/15![Scandinavian Airlines logo]()
$1,243
This United Airlines deal was found by Cheapflights users on 7/15. 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.
Sat 10/175:36 pm
STL
- MAD
2 stops32h 24m
United Airlines
Sat 10/2412:45 pm
MAD
- STL
2 stops33h 56m
United Airlines
Deal found 7/15![United Airlines logo]()
$770
This United Airlines deal was found by Cheapflights users on 7/14. 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 10/197:30 am
STL
- MAD
1 stop18h 30m
United Airlines
Mon 11/211:15 am
MAD
- STL
1 stop15h 25m
United Airlines
Deal found 7/14![United Airlines logo]()
$820
This United Airlines deal was found by Cheapflights users on 7/14. 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.
Thu 12/246:00 am
STL
- MAD
2 stops19h 00m
United Airlines
Fri 1/81:25 pm
MAD
- STL
2 stops32h 05m
United Airlines
Deal found 7/14![United Airlines logo]()
$888
This Delta deal was found by Cheapflights users on 7/15. 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 12/219:00 am
STL
- MAD
1 stop16h 00m
Delta
Mon 12/2811:55 am
MAD
- STL
1 stop18h 44m
Delta
Deal found 7/15![Delta logo]()
$1,122
This Scandinavian Airlines deal was found by Cheapflights users on 7/14. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/221:30 pm
STL
- MAD
2 stops19h 40m
Scandinavian Airlines
Fri 11/276:00 am
MAD
- STL
3 stops24h 39m
Scandinavian Airlines
Deal found 7/14![Scandinavian Airlines logo]()
$1,422
This United Airlines deal was found by Cheapflights users on 7/13. 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.
Sun 12/203:40 pm
STL
- MAD
1 stop14h 00m
United Airlines
Sat 1/21:25 pm
MAD
- STL
1 stop31h 20m
United Airlines
Deal found 7/13![United Airlines logo]()
$1,536
This Scandinavian Airlines deal was found by Cheapflights users on 7/14. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/204:40 pm
STL
- MAD
2 stops16h 30m
Scandinavian Airlines
Mon 1/46:00 am
MAD
- STL
3 stops24h 39m
Scandinavian Airlines
Deal found 7/14![Scandinavian Airlines logo]()
$2,272
This Cathay Pacific deal was found by Cheapflights users on 7/17. 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 Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/211:06 pm
STL
- MAD
3 stops42h 09m
Multiple Airlines
Fri 10/3011:25 am
MAD
- STL
2 stops42h 34m
Multiple Airlines
Deal found 7/17![Multiple Airlines logo]()
$12,634
Last-minute flights from St. Louis to MadridDiscover last-minute flight deals from St. Louis to Madrid. Data last updated July 17, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Madrid. Data last updated July 17, 2026 and is based on user searches.
This Justfly.com deal was found by Cheapflights users on 7/15. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1712:10 pm
STL
- MAD
1 stop11h 40m
Air Canada
Fri 9/181:30 pm
MAD
- STL
2 stops29h 33m
Air Canada
Deal found 7/15![Air Canada logo]()
$779
This Cheapflightsfares deal was found by Cheapflights users on 7/15. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/176:54 pm
STL
- MAD
2 stops15h 46m
Lufthansa
Fri 9/186:00 am
MAD
- STL
2 stops22h 36m
Lufthansa
Deal found 7/15![Lufthansa logo]()
$791
This United Airlines deal was found by Cheapflights users on 7/13. 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.
Sun 8/307:00 am
STL
- MAD
1 stop19h 00m
United Airlines
Wed 9/912:45 pm
MAD
- STL
2 stops30h 12m
United Airlines
Deal found 7/13![United Airlines logo]()
$867
This United Airlines deal was found by Cheapflights users on 7/13. 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.
Sun 8/307:00 am
STL
- MAD
1 stop19h 00m
United Airlines
Thu 9/101:30 pm
MAD
- STL
2 stops29h 32m
United Airlines
Deal found 7/13![United Airlines logo]()
$872
This Air Canada deal was found by Cheapflights users on 7/13. 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.
Sun 8/3012:10 pm
STL
- MAD
2 stops37h 40m
Air Canada
Fri 9/1112:45 pm
MAD
- STL
2 stops30h 18m
Air Canada
Deal found 7/13![Air Canada logo]()
$874
This United Airlines deal was found by Cheapflights users on 7/13. 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 8/3112:10 pm
STL
- MAD
1 stop11h 40m
United Airlines
Wed 9/912:45 pm
MAD
- STL
2 stops30h 12m
United Airlines
Deal found 7/13![United Airlines logo]()
$866
This SmartFares deal was found by Cheapflights users on 7/17. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/312:40 pm
STL
- MAD
1 stop11h 10m
Multiple Airlines
Mon 9/78:25 am
MAD
- STL
1 stop36h 00m
Multiple Airlines
Deal found 7/17![Multiple Airlines logo]()
$869
This Air Canada deal was found by Cheapflights users on 7/13. 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.
Mon 8/317:25 am
STL
- MAD
2 stops16h 25m
Air Canada
Wed 9/912:45 pm
MAD
- STL
2 stops33h 53m
Air Canada
Deal found 7/13![Air Canada logo]()
$870
This Air Canada deal was found by Cheapflights users on 7/13. 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.
Mon 8/3112:10 pm
STL
- MAD
1 stop11h 40m
Air Canada
Tue 9/81:30 pm
MAD
- STL
2 stops31h 45m
Air Canada
Deal found 7/13![Air Canada logo]()
$871
This United Airlines deal was found by Cheapflights users on 7/13. 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 8/3112:10 pm
STL
- MAD
1 stop11h 40m
United Airlines
Tue 9/85:55 am
MAD
- STL
1 stop14h 30m
United Airlines
Deal found 7/13![United Airlines logo]()
$876
One-way flights from St. Louis to MadridSearch for one-way flight options from St. Louis to Madrid. Find affordable one-way fares based on user searches. Data last updated July 17, 2026.
Search for one-way flight options from St. Louis to Madrid. Find affordable one-way fares based on user searches. Data last updated July 17, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/236:17 pm
STL
- MAD
3 stops32h 18m
Multiple Airlines
Deal found 7/13![Multiple Airlines logo]()
$433
This Kiwi.com deal was found by Cheapflights users on 7/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/216:17 pm
STL
- MAD
3 stops32h 18m
Multiple Airlines
Deal found 7/13![Multiple Airlines logo]()
$441
This Expedia deal was found by Cheapflights users on 7/16. 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.
Wed 9/98:55 am
STL
- MAD
1 stop17h 40m
Air Canada
Deal found 7/16![Air Canada logo]()
$447
This United Airlines deal was found by Cheapflights users on 7/12. 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.
Wed 8/2612:10 pm
STL
- MAD
1 stop11h 40m
United Airlines
Deal found 7/12![United Airlines logo]()
$462
This United Airlines deal was found by Cheapflights users on 7/13. 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.
Sat 8/224:50 pm
STL
- MAD
2 stops31h 00m
United Airlines
Deal found 7/13![United Airlines logo]()
$467
This Kiwi.com deal was found by Cheapflights users on 7/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/910:35 am
STL
- MAD
3 stops40h 20m
Multiple Airlines
Deal found 7/16![Multiple Airlines logo]()
$477
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 July 17, 2026.
Most accurate provider | Ovago 3 stars |
|---|---|
Most trusted provider | Ovago 3 stars |
Round-trip from | $709 (United Airlines) |
One-way from | $433 (Kiwi.com) |
Popular in | June |
Cheapest in | February |
Average price | $1,156 |
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 17, 2026.
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
Cheapest round-trip
St. LouisMadrid
STL - MAD
STLMAD
Lambert-St Louis
Wed 11/11
12:05 pm-9:15 am
1 stop14h 10m
Madrid Barajas
Tue 11/24
6:25 am-4:56 pm
2 stops17h 31m
$731
St. LouisMadrid
STL - MAD
STLMAD
Lambert-St Louis
Sat 10/17
5:36 pm-9:00 am
2 stops32h 24m
Madrid Barajas
Sat 10/24
12:45 pm-3:41 pm
2 stops33h 56m
$770
St. LouisMadrid
STL - MAD
STLMAD
Lambert-St Louis
Mon 10/19
7:30 am-9:00 am
1 stop18h 30m
Madrid Barajas
Mon 11/2
11:15 am-7:40 pm
1 stop15h 25m
$820
Quickest round-trip
St. LouisMadrid
STL - MAD
STLMAD
Lambert-St Louis
Mon 10/19
5:28 pm-12:15 pm
1 stop11h 47m
Madrid Barajas
Mon 11/2
6:05 am-4:38 pm
2 stops17h 33m
$822
St. LouisMadrid
STL - MAD
STLMAD
Lambert-St Louis
Mon 10/19
6:00 pm-3:35 pm
2 stops14h 35m
Madrid Barajas
Mon 11/2
11:55 am-7:46 pm
1 stop14h 51m
$824
St. LouisMadrid
STL - MAD
STLMAD
Lambert-St Louis
Thu 12/24
6:00 am-8:00 am
2 stops19h 00m
Madrid Barajas
Fri 1/8
1:25 pm-2:30 pm
2 stops32h 05m
$888
St. LouisMadrid
STL - MAD
STLMAD
Lambert-St Louis
Mon 12/21
9:00 am-8:00 am
1 stop16h 00m
Madrid Barajas
Mon 12/28
11:55 am-11:39 pm
1 stop18h 44m
$1,122
St. LouisMadrid
STL - MAD
STLMAD
Lambert-St Louis
Sun 12/13
1:30 pm-4:10 pm
2 stops19h 40m
Madrid Barajas
Fri 12/18
6:05 am-11:39 pm
3 stops24h 34m
$1,243
St. LouisMadrid
STL - MAD
STLMAD
Lambert-St Louis
Sun 11/22
1:30 pm-4:10 pm
2 stops19h 40m
Madrid Barajas
Fri 11/27
6:00 am-11:39 pm
3 stops24h 39m
$1,422
St. LouisMadrid
STL - MAD
STLMAD
Lambert-St Louis
Sun 12/20
3:40 pm-12:40 pm
1 stop14h 00m
Madrid Barajas
Sat 1/2
1:25 pm-1:45 pm
1 stop31h 20m
$1,536
Showing 1-10 of 18 resultsSorted by cheapest first
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 July.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on St. Louis-Madrid flights, users find the pricing of Ovago to be most consistent on Cheapflights vs. Ovago Users can find the same prices on St. Louis-Madrid flight deals on Cheapflights vs. Ovago >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 Ovago the most. Ovago 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.
STL-MAD
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 35 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, February is the cheapest month in which you can book a flight from St. Louis to Madrid (average of $673). Flying from St. Louis to Madrid in June is currently the most expensive (average of $1,465). 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.
How much does it cost to fly round-trip from St. Louis to Madrid?
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 17, 2026.
Get a feel of what it's like to fly with Delta,United Airlines, andAmerican 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.
Crew
8.5
Boarding
8.1
Entertainment
7.8
Food
7.2
Comfort
7.8
Overall
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Boarding
8.1
Entertainment
7.8
Food
7.2
Comfort
7.8
Overall
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Boarding
8.1
Entertainment
7.8
Food
7.2
Comfort
7.8
Overall
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Boarding
8.1
Entertainment
7.8
Food
7.2
Comfort
7.8
Overall
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Boarding
8.1
Entertainment
7.8
Food
7.2
Comfort
7.8
Overall
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Boarding
8.1
Entertainment
7.8
Food
7.2
Comfort
7.8
Overall
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
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Top 6 airlines flying from St. Louis to Madrid
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| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$482 | Average$830 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$489 | Average$788 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$516 | Average$745 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$523 | Average$781 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$578 | Average$1,146 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$581 | Average$776 | FlexibilityNo cancel fee | On-time71% |