$380+ Cheap flights from St. Louis (STL) to Madrid, Spain (MAD)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/7. Fares are subject to change and may not be available on all flights or dates of travel.
STL — MAD
Oct 11 — Oct 181
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
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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
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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 September 11, 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 September 11, 2026.
This United Airlines deal was found by Cheapflights users on 9/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/37:30 am -
2 stops17h 30m
Wed 11/111:25 pm -
2 stops39h 15m
Deal found 9/9![United Airlines logo]()
$563
This American Airlines deal was found by Cheapflights users on 9/8. 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.
Mon 9/2111:09 am -
1 stop11h 26m
Wed 10/73:20 pm -
1 stop13h 54m
Deal found 9/8![American Airlines logo]()
$572
This British Airways deal was found by Cheapflights users on 9/11. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/79:35 pm -
1 stop13h 00m
Wed 10/2112:40 pm -
1 stop18h 19m
Deal found 9/11![British Airways logo]()
$573
This FlightHub deal was found by Cheapflights users on 9/9. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/35:29 pm -
2 stops16h 36m
Wed 11/1112:40 pm -
1 stop16h 35m
Deal found 9/9![British Airways logo]()
$577
This FlightHub deal was found by Cheapflights users on 9/10. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/299:35 pm -
1 stop15h 30m
Fri 10/910:25 am -
1 stop18h 34m
Deal found 9/10![British Airways logo]()
$578
This Mytrip deal was found by Cheapflights users on 9/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/202:40 pm -
1 stop11h 10m
Tue 9/296:20 am -
2 stops21h 00m
Deal found 9/10![Multiple Airlines logo]()
$580
This Finnair deal was found by Cheapflights users on 9/9. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/411:01 am -
1 stop14h 19m
Wed 10/143:55 pm -
1 stop14h 47m
Deal found 9/9![Multiple Airlines logo]()
$581
This United Airlines deal was found by Cheapflights users on 9/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2912:10 pm -
1 stop11h 40m
Fri 10/911:15 am -
2 stops30h 33m
Deal found 9/10![United Airlines logo]()
$583
This United Airlines deal was found by Cheapflights users on 9/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/281:09 pm -
1 stop11h 56m
Fri 10/911:15 am -
2 stops30h 33m
Deal found 9/11![United Airlines logo]()
$584
This FlightHub deal was found by Cheapflights users on 9/11. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/219:35 pm -
1 stop29h 05m
Fri 10/3012:05 pm -
2 stops17h 37m
Deal found 9/11![British Airways logo]()
$587
This United Airlines deal was found by Cheapflights users on 9/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/48:00 am -
2 stops15h 50m
Wed 10/1411:15 am -
2 stops17h 06m
Deal found 9/9![United Airlines logo]()
$588
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 September 11, 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 September 11, 2026.
This Finnair deal was found by Cheapflights users on 9/9. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/49:50 am -
1 stop15h 35m
Wed 11/1112:35 pm -
1 stop16h 12m
Deal found 9/9![Multiple Airlines logo]()
$580
This Delta deal was found by Cheapflights users on 9/11. 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 10/2112:28 pm -
2 stops14h 02m
Fri 10/3010:50 am -
2 stops19h 04m
Deal found 9/11![Delta logo]()
$635
This KLM deal was found by Cheapflights users on 9/11. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/152:17 pm -
2 stops14h 53m
Fri 12/2512:20 pm -
1 stop16h 49m
Deal found 9/11![KLM logo]()
$685
This United Airlines deal was found by Cheapflights users on 9/6. 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 -
1 stop11h 40m
Wed 10/145:55 am -
1 stop14h 30m
Deal found 9/6![United Airlines logo]()
$719
This British Airways deal was found by Cheapflights users on 9/9. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1911:21 am -
1 stop15h 14m
Mon 11/21:30 pm -
1 stop15h 29m
Deal found 9/9![British Airways logo]()
$720
This Delta deal was found by Cheapflights users on 9/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/152:17 pm -
2 stops14h 53m
Fri 12/259:20 am -
2 stops30h 47m
Deal found 9/9![Delta logo]()
$695
This United Airlines deal was found by Cheapflights users on 9/7. 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 3/111:45 am -
1 stop14h 30m
Thu 3/41:25 pm -
2 stops32h 37m
Deal found 9/7![United Airlines logo]()
$721
This Delta deal was found by Cheapflights users on 9/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/196:47 am -
2 stops20h 08m
Mon 11/29:20 am -
2 stops21h 34m
Deal found 9/9![Delta logo]()
$724
This United Airlines deal was found by Cheapflights users on 9/7. 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 10/71:29 pm -
2 stops23h 21m
Wed 10/145:55 am -
1 stop14h 30m
Deal found 9/7![United Airlines logo]()
$740
This Delta deal was found by Cheapflights users on 9/7. 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 10/712:28 pm -
2 stops14h 02m
Wed 10/146:00 am -
2 stops21h 51m
Deal found 9/7![Delta logo]()
$741
Last-minute flights from St. Louis to MadridDiscover last-minute flight deals from St. Louis to Madrid. Data last updated September 11, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Madrid. Data last updated September 11, 2026 and is based on user searches.
This Mytrip deal was found by Cheapflights users on 9/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/202:40 pm -
1 stop11h 10m
Tue 9/296:20 am -
2 stops21h 00m
Deal found 9/10![Multiple Airlines logo]()
$580
This Mytrip deal was found by Cheapflights users on 9/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/209:40 am -
2 stops16h 10m
Tue 9/296:20 am -
2 stops21h 00m
Deal found 9/10![Air Canada logo]()
$606
This American Airlines deal was found by Cheapflights users on 9/8. 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.
Mon 9/2111:09 am -
1 stop11h 26m
Wed 10/73:20 pm -
1 stop13h 54m
Deal found 9/8![American Airlines logo]()
$572
This United Airlines deal was found by Cheapflights users on 9/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/281:09 pm -
1 stop11h 56m
Fri 10/911:15 am -
2 stops30h 33m
Deal found 9/11![United Airlines logo]()
$584
This FlightHub deal was found by Cheapflights users on 9/10. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/299:35 pm -
1 stop15h 30m
Fri 10/910:25 am -
1 stop18h 34m
Deal found 9/10![British Airways logo]()
$578
This United Airlines deal was found by Cheapflights users on 9/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2912:10 pm -
1 stop11h 40m
Fri 10/911:15 am -
2 stops30h 33m
Deal found 9/10![United Airlines logo]()
$583
This Finnair deal was found by Cheapflights users on 9/9. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/411:01 am -
1 stop14h 19m
Wed 10/143:55 pm -
1 stop14h 47m
Deal found 9/9![Multiple Airlines logo]()
$581
This United Airlines deal was found by Cheapflights users on 9/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/48:00 am -
2 stops15h 50m
Wed 10/1411:15 am -
2 stops17h 06m
Deal found 9/9![United Airlines logo]()
$588
This British Airways deal was found by Cheapflights users on 9/11. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/79:35 pm -
1 stop13h 00m
Wed 10/2112:40 pm -
1 stop18h 19m
Deal found 9/11![British Airways logo]()
$573
This FlightHub deal was found by Cheapflights users on 9/11. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/219:35 pm -
1 stop29h 05m
Fri 10/3012:05 pm -
2 stops17h 37m
Deal found 9/11![British Airways logo]()
$587
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 September 11, 2026.
Search for one-way flight options from St. Louis to Madrid. Find affordable one-way fares based on user searches. Data last updated September 11, 2026.
This Expedia deal was found by Cheapflights users on 9/6. 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.
Thu 1/71:15 pm -
1 stop12h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Iberia logo]()
$380
This Expedia deal was found by Cheapflights users on 9/6. 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.
Thu 1/711:45 am -
2 stops28h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Lufthansa logo]()
$387
This Kiwi.com deal was found by Cheapflights users on 9/8. 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.
Tue 12/16:05 pm -
2 stops43h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Multiple Airlines logo]()
$396
This United Airlines deal was found by Cheapflights users on 9/6. 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 1/71:09 pm -
3 stops35h 51m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![United Airlines logo]()
$412
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/126:35 pm -
3 stops32h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Multiple Airlines logo]()
$442
This deal was found by Cheapflights users on 9/11. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1011:05 am -
1 stop15h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/11![United Airlines logo]()
$453
This Thrive Travel deal was found by Cheapflights users on 9/10. 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 Thrive Travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/123:30 pm -
1 stop17h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Lufthansa logo]()
$457
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/206:35 pm -
3 stops59h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Multiple Airlines logo]()
$464
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 September 11, 2026.
Most accurate provider | Ovago 3 stars |
|---|---|
Most trusted provider | Ovago 3 stars |
Round-trip from | $563 (United Airlines) |
One-way from | $380 (Expedia) |
Popular in | June |
Cheapest in | February |
Average price | $1,107 |
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 7,457,451 searches. Data last updated September 11, 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
Quickest round-trip
St. LouisMadrid
STL Lambert-St Louis - MAD Madrid Barajas
STLMAD
Lambert-St Louis
Thu 1/7
1:15 pm-8:55 am
1 stop12h 40m
Madrid Barajas
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$380
St. LouisMadrid
STL Lambert-St Louis - MAD Madrid Barajas
STLMAD
Lambert-St Louis
Tue 12/1
6:05 pm-8:20 pm
2 stops43h 15m
Madrid Barajas
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$396
St. LouisMadrid
STL Lambert-St Louis - MAD Madrid Barajas
STLMAD
Lambert-St Louis
Thu 1/7
1:09 pm-8:00 am
3 stops35h 51m
Madrid Barajas
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$412
St. LouisMadrid
STL Lambert-St Louis - MAD Madrid Barajas
STLMAD
Lambert-St Louis
Mon 10/12
6:35 pm-9:45 am
3 stops32h 10m
Madrid Barajas
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$442
St. LouisMadrid
STL Lambert-St Louis - MAD Madrid Barajas
STLMAD
Lambert-St Louis
Thu 12/10
11:05 am-9:30 am
1 stop15h 25m
Madrid Barajas
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$453
St. LouisMadrid
STL Lambert-St Louis - MAD Madrid Barajas
STLMAD
Lambert-St Louis
Fri 11/20
6:35 pm-12:50 pm
3 stops59h 15m
Madrid Barajas
Wed 12/31
12:00 am-5:00 pm
Nonstop0h 00m
$464
St. LouisMadrid
STL Lambert-St Louis - MAD Madrid Barajas
STLMAD
Lambert-St Louis
Wed 11/4
9:50 am-8:25 am
1 stop15h 35m
Madrid Barajas
Wed 11/11
12:35 pm-9:47 pm
1 stop16h 12m
$580
St. LouisMadrid
STL Lambert-St Louis - MAD Madrid Barajas
STLMAD
Lambert-St Louis
Wed 10/21
12:28 pm-9:30 am
2 stops14h 02m
Madrid Barajas
Fri 10/30
10:50 am-11:54 pm
2 stops19h 04m
$635
St. LouisMadrid
STL Lambert-St Louis - MAD Madrid Barajas
STLMAD
Lambert-St Louis
Tue 12/15
2:17 pm-12:10 pm
2 stops14h 53m
Madrid Barajas
Fri 12/25
12:20 pm-10:09 pm
1 stop16h 49m
$685
St. LouisMadrid
STL Lambert-St Louis - MAD Madrid Barajas
STLMAD
Lambert-St Louis
Tue 12/15
2:17 pm-12:10 pm
2 stops14h 53m
Madrid Barajas
Fri 12/25
9:20 am-9:07 am
2 stops30h 47m
$695
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 September.
| 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 | |
| Price Accuracy2 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 $830 and $1,188 in November.The cheapest round-trip price found within the last 5 days was $563 on United Airlines (Nov 3-Nov 11).
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 September 11, 2026.
Get a feel of what it's like to fly with United Airlines,American Airlines, andIberia 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.
Food
6.7
Overall
7.4
Crew
8.1
Entertainment
7.1
Comfort
7.3
Boarding
7.7
Reviews
1 / 20
4.0
OkayChris,Aug 2026
MIA - ORD
Food
6.7
Overall
7.4
Crew
8.1
Entertainment
7.1
Comfort
7.3
Boarding
7.7
Reviews
1 / 20
4.0
OkayChris,Aug 2026
MIA - ORD
Food
6.7
Overall
7.4
Crew
8.1
Entertainment
7.1
Comfort
7.3
Boarding
7.7
Reviews
1 / 20
4.0
OkayChris,Aug 2026
MIA - ORD
Food
6.7
Overall
7.4
Crew
8.1
Entertainment
7.1
Comfort
7.3
Boarding
7.7
Reviews
1 / 20
4.0
OkayChris,Aug 2026
MIA - ORD
Food
6.7
Overall
7.4
Crew
8.1
Entertainment
7.1
Comfort
7.3
Boarding
7.7
Reviews
1 / 20
4.0
OkayChris,Aug 2026
MIA - ORD
Food
6.7
Overall
7.4
Crew
8.1
Entertainment
7.1
Comfort
7.3
Boarding
7.7
Reviews
1 / 20
4.0
OkayChris,Aug 2026
MIA - ORD
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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 7,457,451 searches. Data last updated September 11, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$482 | Average$1,055 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$489 | Average$823 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$516 | Average$747 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$523 | Average$854 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$581 | Average$813 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$586 | Average$1,156 | FlexibilityNo cancel fee | On-time69% |