C$477 Cheap Flights from St Louis (STL) to Madrid (MAD)

Compare St Louis to Madrid flight deals

Find the cheapest month or even day of the year to fly to Madrid

Book the best Madrid fare with no extra fees

Flight deals from St Louis to Madrid

Looking for a cheap last-minute deal or the best return flight from St Louis Airport to Madrid Airport? If you want to travel next month, return fares start from C$1,233. Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from St Louis to Madrid

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like St Louis to Madrid flights are currently cheapest in August.

St Louis to Madrid: Alternative routes

Compare routes from St Louis to Madrid below. You may find an airport to fly into that's cheaper, faster, or easier than Madrid.

St Louis to Madrid: Flight information

The things to know before you go.
Cheapest flight foundC$477
Cheapest month to flyAugust

Finding cheap flights from St Louis to Madrid: Frequently asked questions

The best price we found for a return flight from St Louis to Madrid is C$1,083. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from St Louis to Madrid. But we found flights with one or more stops from C$1,083.
As of April 2026, there are no flights flying from St Louis to Madrid.
The cheapest month to fly from St Louis to Madrid is usually February.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from St Louis Airport to Madrid Airport on Wednesday, February 17, 2027.
No airlines currently offer direct flights between St Louis Airport and Madrid Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Madrid but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Madrid is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, United offers the cheapest flight tickets to Madrid.

Traveling from Lambert-St. Louis International Airport (STL) to Adolfo Suarez Madrid-Barajas Airport (MAD): what you need to know

  • Traveling during a peak month such as July? School holidays and other popular periods can mean longer lines at security. Play things extra safe and arrive up to four hours before an international flight and two hours before a domestic departure.

  • We make it easy to book a flight with a stopover. To see the options for flights from Lambert-St. Louis International Airport to Adolfo Suarez Madrid-Barajas Airport, uncheck 'Direct flights only.' Then, pick a flight that has a stop long enough to tour your chosen city. Some popular stopovers between STL and MAD include:

    • Pearson International Airport

    • O'Hare International Airport

    • Logan International Airport

  • Remember, you may need a visa to enter Spain. Visa requirements vary and travel documentation requirements change often. Before organizing your cheap ticket from STL to MAD, be sure to check with your carrier and your destination country's local consulate or embassy for current information.

How to find the cheapest flights from Lambert-St. Louis International Airport (STL) to Adolfo Suarez Madrid-Barajas Airport (MAD)

  • The lowest price we've found for a one-way ticket from Lambert-St. Louis International Airport to Adolfo Suarez Madrid-Barajas Airport is C$477. For a return flight on this route, the best price is C$1,083. Depending on the availability when you book, these fares could change.

  • Don't wait until the last minute. You're more likely to get cheap flight tickets from STL to MAD if you book early. Airlines often have some great early bird rates.

  • Getting cheap flight tickets from Lambert-St. Louis International Airport to Adolfo Suarez Madrid-Barajas Airport is easy if you're flexible with your trip dates. Use the 'Whole month' search function to see the lowest fares across the month and score a great deal.

  • Sign into your online account or use the app to create a Price Alert. We'll notify you straight away if there's a better deal on this route. It's simple to do, and it'll save you from checking for cheap flight tickets from STL to MAD every day.

  • Tailor your trip with filters. Pick your ideal departure and arrival times, total journey duration and airlines. You can also sort results by 'Best,' 'Fastest' or 'Cheapest' flights from Lambert-St. Louis International Airport to Adolfo Suarez Madrid-Barajas Airport.

Handy information about Lambert-St. Louis International Airport (STL)

  • Located around 26 kilometres from the center of St Louis, Lambert-St. Louis International Airport can be reached in approximately 21 minutes by car, depending on traffic. The ride on public transport will take roughly 36 minutes.

  • Want a convenient hotel near STL? If you're catching an early flight from Lambert-St. Louis International Airport to Adolfo Suarez Madrid-Barajas Airport, these accommodation options will have you moments from check-in:

Arriving at Adolfo Suarez Madrid-Barajas Airport (MAD)

Getting from Adolfo Suarez Madrid-Barajas Airport (MAD) to central Madrid

  • From Adolfo Suarez Madrid-Barajas Airport, Madrid is approximately 18 kilometres away. It takes around 26 minutes to get to the center driving.

  • It'll take around 37 minutes to get there by public transport.

When to fly to Adolfo Suarez Madrid-Barajas Airport (MAD)

  • July is the busiest month for flights from Lambert-St. Louis International Airport to Adolfo Suarez Madrid-Barajas Airport. To avoid the crowds, go to Madrid in April.

  • Lock in your flight from Lambert-St. Louis International Airport to Adolfo Suarez Madrid-Barajas Airport for July if you want to visit Madrid during its warmest month. Expect temperatures of between 17ºC and 36ºC.

  • Search for cheap flight tickets from STL to MAD in January if you like cooler conditions. Temperatures are at their lowest then, ranging between 0ºC and 11ºC on average.

More about Madrid

  • Start your Madrid trip right by finding a great place to stay. As soon as you've booked your flight from STL to MAD, have a look at our selection of hotel options including:

  • El Retiro Park and Puerta del Sol are just a couple of the leading attractions to put on your Madrid travel itinerary. Keep the sightseeing going at Plaza Mayor.

Complete your Madrid trip with hotels and a car rental

  • Once you've secured your cheap ticket to Adolfo Suarez Madrid-Barajas Airport, check out our low prices and exclusive rates for hotels. You can also compare a range of car rental companies in one place to find the best car rental price for your Madrid escape.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.