$338+ 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 10/12. Fares are subject to change and may not be available on all flights or dates of travel.
STL — MAD
Sep 1 — Sep 81
Round-trip
1 adult, Economy
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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
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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 August 2, 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 August 2, 2026.
This Gotogate deal was found by Cheapflights users on 7/29. 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 9/212:40 pm
STL
- MAD
1 stop11h 10m
Multiple Airlines
Tue 10/65:55 am
MAD
- STL
1 stop14h 30m
Multiple Airlines
Deal found 7/29![Multiple Airlines logo]()
$692
This Expedia deal was found by Cheapflights users on 8/2. 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 10/142:40 pm
STL
- MAD
1 stop11h 55m
Multiple Airlines
Wed 11/181:25 pm
MAD
- STL
2 stops32h 05m
Multiple Airlines
Deal found 8/2![Multiple Airlines logo]()
$693
This Gotogate deal was found by Cheapflights users on 7/29. 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 9/212:40 pm
STL
- MAD
1 stop11h 10m
Air Canada
Tue 10/66:20 am
MAD
- STL
2 stops20h 40m
Air Canada
Deal found 7/29![Air Canada logo]()
$699
This Expedia deal was found by Cheapflights users on 8/1. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/94:05 pm
STL
- MAD
2 stops34h 15m
Multiple Airlines
Wed 1/131:25 pm
MAD
- STL
2 stops32h 05m
Multiple Airlines
Deal found 8/1![Multiple Airlines logo]()
$701
This Gotogate deal was found by Cheapflights users on 7/29. 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.
Wed 9/232:40 pm
STL
- MAD
1 stop11h 55m
Multiple Airlines
Thu 10/86:20 am
MAD
- STL
2 stops20h 40m
Multiple Airlines
Deal found 7/29![Multiple Airlines logo]()
$704
This United Airlines deal was found by Cheapflights users on 7/29. 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 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 7/29![United Airlines logo]()
$709
This United Airlines deal was found by Cheapflights users on 7/31. 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 9/288:30 am
STL
- MAD
1 stop16h 35m
United Airlines
Fri 10/912:45 pm
MAD
- STL
2 stops33h 58m
United Airlines
Deal found 7/31![United Airlines logo]()
$710
This Expedia deal was found by Cheapflights users on 8/1. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1811:15 am
STL
- MAD
2 stops13h 45m
Multiple Airlines
Wed 12/27:30 pm
MAD
- STL
2 stops50h 56m
Multiple Airlines
Deal found 8/1![Multiple Airlines logo]()
$712
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 August 2, 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 August 2, 2026.
This United Airlines deal was found by Cheapflights users on 7/30. 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 9/2912:10 pm
STL
- MAD
1 stop11h 40m
United Airlines
Fri 10/912:45 pm
MAD
- STL
2 stops33h 58m
United Airlines
Deal found 7/30![United Airlines logo]()
$709
This Delta deal was found by Cheapflights users on 7/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2110:29 am
STL
- MAD
2 stops12h 51m
Delta
Tue 10/62:35 pm
MAD
- STL
2 stops27h 16m
Delta
Deal found 7/30![Delta logo]()
$724
This British Airways deal was found by Cheapflights users on 7/28. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/169:35 pm
STL
- MAD
1 stop13h 35m
British Airways
Fri 10/233:55 pm
MAD
- STL
1 stop14h 47m
British Airways
Deal found 7/28![British Airways logo]()
$772
This United Airlines deal was found by Cheapflights users on 7/31. 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 9/288:30 am
STL
- MAD
1 stop16h 35m
United Airlines
Fri 10/912:45 pm
MAD
- STL
2 stops33h 58m
United Airlines
Deal found 7/31![United Airlines logo]()
$710
This Delta deal was found by Cheapflights users on 7/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/217:00 am
STL
- MAD
2 stops19h 55m
Delta
Fri 10/3010:50 am
MAD
- STL
2 stops19h 04m
Delta
Deal found 7/29![Delta logo]()
$736
This United Airlines deal was found by Cheapflights users on 7/29. 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 Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/216:00 am
STL
- MAD
2 stops19h 05m
United Airlines
Fri 10/306:05 am
MAD
- STL
1 stop14h 40m
United Airlines
Deal found 7/29![United Airlines logo]()
$729
This British Airways deal was found by Cheapflights users on 7/29. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/239:35 pm
STL
- MAD
1 stop13h 35m
British Airways
Sat 10/311:00 pm
MAD
- STL
1 stop12h 58m
British Airways
Deal found 7/29![British Airways logo]()
$822
This United Airlines deal was found by Cheapflights users on 8/2. 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 10/2110:27 am
STL
- MAD
2 stops15h 33m
United Airlines
Mon 10/2611:15 am
MAD
- STL
1 stop16h 37m
United Airlines
Deal found 8/2![United Airlines logo]()
$815
This United Airlines deal was found by Cheapflights users on 7/31. 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 stop17h 37m
United Airlines
Deal found 7/31![United Airlines logo]()
$820
This United Airlines deal was found by Cheapflights users on 8/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/16:54 pm
STL
- MAD
2 stops28h 56m
United Airlines
Tue 9/85:55 am
MAD
- STL
1 stop14h 30m
United Airlines
Deal found 8/1![United Airlines logo]()
$876
Last-minute flights from St. Louis to MadridDiscover last-minute flight deals from St. Louis to Madrid. Data last updated August 2, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Madrid. Data last updated August 2, 2026 and is based on user searches.
This Gotogate deal was found by Cheapflights users on 7/29. 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 8/312:10 pm
STL
- MAD
1 stop11h 40m
Multiple Airlines
Sat 8/2212:45 pm
MAD
- STL
1 stop12h 57m
Multiple Airlines
Deal found 7/29![Multiple Airlines logo]()
$980
This deal was found by Cheapflights users on 7/31. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/312:10 pm
STL
- MAD
1 stop11h 40m
Air Canada
Sat 8/2212:45 pm
MAD
- STL
1 stop12h 57m
Air Canada
Deal found 7/31![Air Canada logo]()
$1,019
This Delta deal was found by Cheapflights users on 7/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/35:23 pm
STL
- MAD
2 stops16h 22m
Delta
Sat 8/2210:25 am
MAD
- STL
2 stops20h 06m
Delta
Deal found 7/29![Delta logo]()
$1,032
This oojo deal was found by Cheapflights users on 7/31. 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.
Fri 8/213:30 pm
STL
- MAD
1 stop17h 40m
Lufthansa
Tue 9/15:55 am
MAD
- STL
1 stop14h 30m
Lufthansa
Deal found 7/31![Lufthansa logo]()
$1,062
This Booking.com deal was found by Cheapflights users on 7/31. 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 8/2412:10 pm
STL
- MAD
1 stop11h 40m
Multiple Airlines
Mon 8/315:00 pm
MAD
- STL
1 stop27h 25m
Multiple Airlines
Deal found 7/31![Multiple Airlines logo]()
$1,001
This Expedia deal was found by Cheapflights users on 7/28. 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.
Fri 8/2810:16 am
STL
- MAD
1 stop15h 49m
Iberia
Fri 9/411:45 am
MAD
- STL
1 stop19h 29m
Iberia
Deal found 7/28![Iberia logo]()
$1,045
This Delta deal was found by Cheapflights users on 7/28. 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.
Fri 8/285:34 pm
STL
- MAD
2 stops15h 51m
Delta
Fri 9/49:50 am
MAD
- STL
1 stop15h 03m
Delta
Deal found 7/28![Delta logo]()
$1,053
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 August 2, 2026.
Search for one-way flight options from St. Louis to Madrid. Find affordable one-way fares based on user searches. Data last updated August 2, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1210:35 am
STL
- MAD
3 stops39h 55m
Multiple Airlines
Deal found 7/30![Multiple Airlines logo]()
$338
This American Airlines deal was found by Cheapflights users on 7/31. 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.
Thu 12/245:00 am
STL
- MAD
1 stop17h 45m
American Airlines
Deal found 7/31![American Airlines logo]()
$391
This Orbitz deal was found by Cheapflights users on 7/31. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/244:05 pm
STL
- MAD
2 stops32h 55m
Air Canada
Deal found 7/31![Air Canada logo]()
$398
This Kiwi.com deal was found by Cheapflights users on 7/31. 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.
Mon 8/316:17 pm
STL
- MAD
3 stops43h 18m
Multiple Airlines
Deal found 7/31![Multiple Airlines logo]()
$418
This oojo deal was found by Cheapflights users on 7/30. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/123:30 pm
STL
- MAD
1 stop17h 30m
Lufthansa
Deal found 7/30![Lufthansa logo]()
$428
This Mytrip deal was found by Cheapflights users on 8/1. 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 Mytrip 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
Multiple Airlines
Deal found 8/1![Multiple Airlines logo]()
$444
This oojo deal was found by Cheapflights users on 7/31. 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 8/3110:22 am
STL
- MAD
1 stop12h 08m
British Airways
Deal found 7/31![British Airways logo]()
$455
This Expedia deal was found by Cheapflights users on 7/31. 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 8/313:32 pm
STL
- MAD
2 stops34h 18m
Air Canada
Deal found 7/31![Air Canada logo]()
$460
This United Airlines deal was found by Cheapflights users on 7/28. 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 7/28![United Airlines logo]()
$462
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 August 2, 2026.
Most accurate provider | Ovago 3 stars |
|---|---|
Most trusted provider | Ovago 3 stars |
Round-trip from | $692 (Gotogate) |
One-way from | $338 (Kiwi.com) |
Popular in | June |
Cheapest in | February |
Average price | $823 |
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 August 2, 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
Tue 9/29
12:10 pm-6:50 am
1 stop11h 40m
Madrid Barajas
Fri 10/9
12:45 pm-3:43 pm
2 stops33h 58m
$709
St. LouisMadrid
STL - MAD
STLMAD
Lambert-St Louis
Mon 9/28
8:30 am-8:05 am
1 stop16h 35m
Madrid Barajas
Fri 10/9
12:45 pm-3:43 pm
2 stops33h 58m
$710
St. LouisMadrid
STL - MAD
STLMAD
Lambert-St Louis
Mon 9/21
10:29 am-6:20 am
2 stops12h 51m
Madrid Barajas
Tue 10/6
2:35 pm-10:51 am
2 stops27h 16m
$724
St. LouisMadrid
STL - MAD
STLMAD
Lambert-St Louis
Wed 10/21
6:00 am-8:05 am
2 stops19h 05m
Madrid Barajas
Fri 10/30
6:05 am-2:45 pm
1 stop14h 40m
$729
St. LouisMadrid
STL - MAD
STLMAD
Lambert-St Louis
Wed 10/21
7:00 am-9:55 am
2 stops19h 55m
Madrid Barajas
Fri 10/30
10:50 am-11:54 pm
2 stops19h 04m
$736
St. LouisMadrid
STL - MAD
STLMAD
Lambert-St Louis
Fri 10/16
9:35 pm-6:10 pm
1 stop13h 35m
Madrid Barajas
Fri 10/23
3:55 pm-11:42 pm
1 stop14h 47m
$772
St. LouisMadrid
STL - MAD
STLMAD
Lambert-St Louis
Wed 10/21
10:27 am-9:00 am
2 stops15h 33m
Madrid Barajas
Mon 10/26
11:15 am-9:52 pm
1 stop16h 37m
$815
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-9:52 pm
1 stop17h 37m
$820
Quickest round-trip
St. LouisMadrid
STL - MAD
STLMAD
Lambert-St Louis
Fri 10/23
9:35 pm-6:10 pm
1 stop13h 35m
Madrid Barajas
Sat 10/31
1:00 pm-7:58 pm
1 stop12h 58m
$822
St. LouisMadrid
STL - MAD
STLMAD
Lambert-St Louis
Tue 9/1
6:54 pm-6:50 am
2 stops28h 56m
Madrid Barajas
Tue 9/8
5:55 am-1:25 pm
1 stop14h 30m
$876
Showing 1-10 of 19 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 August.
| 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?
Airfare is below average for this route at the moment.
St. Louis to Madrid flights typically cost between $747 and $943 in September.The cheapest round-trip price found within the last 5 days was $692 on Multiple Airlines (Sep 21-Oct 6).
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 August 2, 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
Overall
7.8
Comfort
7.8
Boarding
8.1
Food
7.2
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Overall
7.8
Comfort
7.8
Boarding
8.1
Food
7.2
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Overall
7.8
Comfort
7.8
Boarding
8.1
Food
7.2
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Overall
7.8
Comfort
7.8
Boarding
8.1
Food
7.2
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Overall
7.8
Comfort
7.8
Boarding
8.1
Food
7.2
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Overall
7.8
Comfort
7.8
Boarding
8.1
Food
7.2
Entertainment
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
Discover the top 6 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 August 2, 2026.
| 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$747 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$523 | Average$786 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$581 | Average$786 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$613 | Average$1,156 | FlexibilityNo cancel fee | On-time69% |