$334+ 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 11/15. Fares are subject to change and may not be available on all flights or dates of travel.
STL — MAD
Aug 3 — Aug 101
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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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 4, 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 4, 2026.
This TravelUp deal was found by Cheapflights users on 7/4. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/2511:51 am
STL
- MAD
1 stop11h 09m
Multiple Airlines
Wed 2/1012:40 pm
MAD
- STL
1 stop12h 54m
Multiple Airlines
Deal found 7/4![Multiple Airlines logo]()
$695
This Gotogate deal was found by Cheapflights users on 7/2. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/78:55 am
STL
- MAD
1 stop17h 40m
Multiple Airlines
Wed 10/215:55 am
MAD
- STL
2 stops19h 46m
Multiple Airlines
Deal found 7/2![Multiple Airlines logo]()
$708
This Trip.com deal was found by Cheapflights users on 7/4. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/34:05 pm
STL
- MAD
2 stops32h 55m
Multiple Airlines
Wed 2/36:00 am
MAD
- STL
1 stop14h 45m
Multiple Airlines
Deal found 7/4![Multiple Airlines logo]()
$712
This United Airlines deal was found by Cheapflights users on 7/3. 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 10/1412:45 pm
MAD
- STL
2 stops39h 24m
United Airlines
Deal found 7/3![United Airlines logo]()
$715
This United Airlines deal was found by Cheapflights users on 7/4. 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 11/25:00 am
STL
- MAD
2 stops20h 00m
United Airlines
Tue 2/21:25 pm
MAD
- STL
2 stops32h 05m
United Airlines
Deal found 7/4![United Airlines logo]()
$718
This FlightHub deal was found by Cheapflights users on 7/1. 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 FlightHub 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
Air Canada
Tue 10/2712:25 pm
MAD
- STL
2 stops35h 41m
Air Canada
Deal found 7/1![Air Canada logo]()
$719
This United Airlines deal was found by Cheapflights users on 7/4. 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 11/18:33 am
STL
- MAD
2 stops16h 12m
United Airlines
Thu 2/41:25 pm
MAD
- STL
2 stops32h 05m
United Airlines
Deal found 7/4![United Airlines logo]()
$720
This United Airlines deal was found by Cheapflights users on 7/4. 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 11/224:56 pm
STL
- MAD
1 stop33h 19m
United Airlines
Wed 2/101:25 pm
MAD
- STL
2 stops29h 41m
United Airlines
Deal found 7/4![United Airlines logo]()
$721
This United Airlines deal was found by Cheapflights users on 7/4. 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 11/232:00 pm
STL
- MAD
1 stop12h 15m
United Airlines
Fri 2/126:00 am
MAD
- STL
1 stop14h 45m
United Airlines
Deal found 7/4![United Airlines logo]()
$723
This KAYAK deal was found by Cheapflights users on 6/30. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/217:30 am
STL
- MAD
1 stop18h 30m
Lufthansa
Fri 10/306:00 am
MAD
- STL
1 stop14h 45m
Lufthansa
Deal found 6/30![Lufthansa logo]()
$724
This United Airlines deal was found by Cheapflights users on 7/3. 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 7/3![United Airlines logo]()
$725
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 4, 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 4, 2026.
This United deal was found by Cheapflights users on 7/2. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/79:04 am
STL
- MAD
2 stops17h 31m
Multiple Airlines
Wed 10/2112:45 pm
MAD
- STL
2 stops32h 32m
Multiple Airlines
Deal found 7/2![Multiple Airlines logo]()
$723
This British Airways deal was found by Cheapflights users on 7/1. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/149:35 pm
STL
- MAD
1 stop15h 30m
British Airways
Tue 10/2712:00 pm
MAD
- STL
1 stop17h 58m
British Airways
Deal found 7/1![British Airways logo]()
$727
This United Airlines deal was found by Cheapflights users on 7/1. 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.
Wed 10/78:55 am
STL
- MAD
1 stop17h 40m
United Airlines
Wed 10/215:55 am
MAD
- STL
1 stop14h 30m
United Airlines
Deal found 7/1![United Airlines logo]()
$728
This Delta deal was found by Cheapflights users on 7/4. 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.
Sun 12/132:18 pm
STL
- MAD
2 stops14h 12m
Delta
Fri 12/186:05 am
MAD
- STL
2 stops24h 13m
Delta
Deal found 7/4![Delta logo]()
$740
This KAYAK deal was found by Cheapflights users on 7/4. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/131:08 pm
STL
- MAD
2 stops16h 32m
Lufthansa
Fri 12/186:00 am
MAD
- STL
1 stop14h 45m
Lufthansa
Deal found 7/4![Lufthansa logo]()
$793
This United Airlines deal was found by Cheapflights users on 7/3. 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 11/224:56 pm
STL
- MAD
1 stop33h 19m
United Airlines
Fri 11/276:00 am
MAD
- STL
1 stop14h 45m
United Airlines
Deal found 7/3![United Airlines logo]()
$736
This Delta deal was found by Cheapflights users on 6/30. 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.
Wed 10/216:00 am
STL
- MAD
2 stops20h 55m
Delta
Fri 10/3010:00 am
MAD
- STL
2 stops19h 26m
Delta
Deal found 6/30![Delta logo]()
$740
This United deal was found by Cheapflights users on 6/30. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/51:09 pm
STL
- MAD
1 stop11h 56m
Multiple Airlines
Sat 10/1712:45 pm
MAD
- STL
1 stop12h 56m
Multiple Airlines
Deal found 6/30![Multiple Airlines logo]()
$778
This Delta deal was found by Cheapflights users on 7/1. 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 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 stop13h 20m
Delta
Deal found 7/1![Delta logo]()
$890
Last-minute flights from St. Louis to MadridDiscover last-minute flight deals from St. Louis to Madrid. Data last updated July 4, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Madrid. Data last updated July 4, 2026 and is based on user searches.
This Finnair deal was found by Cheapflights users on 7/3. 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.
Mon 8/36:43 am
STL
- MAD
1 stop17h 07m
Multiple Airlines
Fri 8/1412:05 pm
MAD
- STL
1 stop16h 13m
Multiple Airlines
Deal found 7/3![Multiple Airlines logo]()
$887
This Delta deal was found by Cheapflights users on 7/3. 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 8/33:39 pm
STL
- MAD
1 stop13h 36m
Delta
Fri 8/1410:25 am
MAD
- STL
2 stops17h 17m
Delta
Deal found 7/3![Delta logo]()
$888
This United Airlines deal was found by Cheapflights users on 7/2. 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.
Mon 8/312:10 pm
STL
- MAD
1 stop11h 40m
United Airlines
Mon 8/101:25 pm
MAD
- STL
2 stops33h 13m
United Airlines
Deal found 7/2![United Airlines logo]()
$909
This Delta deal was found by Cheapflights users on 7/1. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/93:39 pm
STL
- MAD
2 stops16h 56m
Delta
Tue 8/189:50 am
MAD
- STL
1 stop15h 37m
Delta
Deal found 7/1![Delta logo]()
$891
This Orbitz deal was found by Cheapflights users on 6/30. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/910:16 am
STL
- MAD
1 stop15h 49m
Iberia
Mon 8/179:50 pm
MAD
- STL
2 stops28h 37m
Iberia
Deal found 6/30![Iberia logo]()
$903
This Lufthansa deal was found by Cheapflights users on 7/1. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/163:30 pm
STL
- MAD
1 stop21h 20m
Lufthansa
Sun 8/235:15 pm
MAD
- STL
1 stop27h 10m
Lufthansa
Deal found 7/1![Lufthansa logo]()
$905
This Expedia deal was found by Cheapflights users on 6/30. 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 Expedia 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
Multiple Airlines
Mon 8/247:30 pm
MAD
- STL
2 stops31h 54m
Multiple Airlines
Deal found 6/30![Multiple Airlines logo]()
$882
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 4, 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 4, 2026.
This oojo deal was found by Cheapflights users on 6/30. 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.
Sun 11/157:00 am
STL
- MAD
1 stop19h 20m
British Airways
Deal found 6/30![British Airways logo]()
$334
This Priceline deal was found by Cheapflights users on 6/30. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/32:50 pm
STL
- MAD
2 stops15h 00m
British Airways
Deal found 6/30![British Airways logo]()
$338
This United Airlines deal was found by Cheapflights users on 7/1. 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.
Sun 11/16:00 am
STL
- MAD
2 stops18h 45m
United Airlines
Deal found 7/1![United Airlines logo]()
$341
This United Airlines deal was found by Cheapflights users on 6/30. 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 11/36:00 am
STL
- MAD
3 stops19h 00m
United Airlines
Deal found 6/30![United Airlines logo]()
$345
This Kiwi.com deal was found by Cheapflights users on 7/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/2510:35 am
STL
- MAD
3 stops50h 25m
Multiple Airlines
Deal found 7/2![Multiple Airlines logo]()
$401
This Kiwi.com deal was found by Cheapflights users on 7/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/110:35 am
STL
- MAD
3 stops40h 20m
Multiple Airlines
Deal found 7/1![Multiple Airlines logo]()
$430
This Booking.com deal was found by Cheapflights users on 7/4. 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.
Wed 12/168:33 am
STL
- MAD
2 stops16h 27m
Air Canada
Deal found 7/4![Air Canada logo]()
$436
This Mytrip deal was found by Cheapflights users on 6/30. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/154:48 pm
STL
- MAD
3 stops20h 47m
Multiple Airlines
Deal found 6/30![Multiple Airlines logo]()
$452
This United Airlines deal was found by Cheapflights users on 7/2. 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 8/2612:10 pm
STL
- MAD
1 stop11h 40m
United Airlines
Deal found 7/2![United Airlines logo]()
$462
This Mytrip deal was found by Cheapflights users on 7/2. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/253:30 pm
STL
- MAD
1 stop13h 50m
Lufthansa
Deal found 7/2![Lufthansa logo]()
$479
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 4, 2026.
Most accurate provider | Ovago 3 stars |
|---|---|
Most trusted provider | Ovago 3 stars |
Round-trip from | $708 (Gotogate) |
One-way from | $334 (oojo) |
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 4, 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 10/7
9:04 am-9:35 am
2 stops17h 31m
Madrid Barajas
Wed 10/21
12:45 pm-2:17 pm
2 stops32h 32m
$723
St. LouisMadrid
STL - MAD
STLMAD
Lambert-St Louis
Wed 10/14
9:35 pm-8:05 pm
1 stop15h 30m
Madrid Barajas
Tue 10/27
12:00 pm-11:58 pm
1 stop17h 58m
$727
St. LouisMadrid
STL - MAD
STLMAD
Lambert-St Louis
Wed 10/7
8:55 am-9:35 am
1 stop17h 40m
Madrid Barajas
Wed 10/21
5:55 am-1:25 pm
1 stop14h 30m
$728
St. LouisMadrid
STL - MAD
STLMAD
Lambert-St Louis
Sun 11/22
4:56 pm-9:15 am
1 stop33h 19m
Madrid Barajas
Fri 11/27
6:00 am-1:45 pm
1 stop14h 45m
$736
St. LouisMadrid
STL - MAD
STLMAD
Lambert-St Louis
Sun 12/13
2:18 pm-11:30 am
2 stops14h 12m
Madrid Barajas
Fri 12/18
6:05 am-11:18 pm
2 stops24h 13m
$740
St. LouisMadrid
STL - MAD
STLMAD
Lambert-St Louis
Wed 10/21
6:00 am-9:55 am
2 stops20h 55m
Madrid Barajas
Fri 10/30
10:00 am-11:26 pm
2 stops19h 26m
$740
Quickest round-trip
St. LouisMadrid
STL - MAD
STLMAD
Lambert-St Louis
Mon 10/5
1:09 pm-8:05 am
1 stop11h 56m
Madrid Barajas
Sat 10/17
12:45 pm-6:41 pm
1 stop12h 56m
$778
St. LouisMadrid
STL - MAD
STLMAD
Lambert-St Louis
Sun 12/13
1:08 pm-12:40 pm
2 stops16h 32m
Madrid Barajas
Fri 12/18
6:00 am-1:45 pm
1 stop14h 45m
$793
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-6:15 pm
1 stop13h 20m
$890
Cheapest one-way
St. LouisMadrid
STL - MAD
STLMAD
Lambert-St Louis
Sun 11/1
1:20 pm-9:20 am
1 stop13h 00m
$341
Showing 1-10 of 16 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 4, 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.
Entertainment
7.8
Food
7.2
Crew
8.5
Overall
7.8
Comfort
7.8
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Entertainment
7.8
Food
7.2
Crew
8.5
Overall
7.8
Comfort
7.8
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Entertainment
7.8
Food
7.2
Crew
8.5
Overall
7.8
Comfort
7.8
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Entertainment
7.8
Food
7.2
Crew
8.5
Overall
7.8
Comfort
7.8
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Entertainment
7.8
Food
7.2
Crew
8.5
Overall
7.8
Comfort
7.8
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Entertainment
7.8
Food
7.2
Crew
8.5
Overall
7.8
Comfort
7.8
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Related info for your journey
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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 July 4, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$482 | Average$830 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$489 | Average$823 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$516 | Average$746 | 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% |