The cheapest times to fly from STL to MAD are

  • September 17th to April 1st (except the weeks of September 24th and December 17th)

based on data collected exclusively by Champion Traveler across tens of millions of flights. Among all the dates above, the very cheapest time to fly from STL to MAD is early December. Prices can be as high as $1460 for Saturday flights during early August, or as low as $694 for Tuesday flights around early December.


When to Fly to Madrid

Flying from St. Louis, MO (STL) to Madrid (MAD) will usually cost between $714 to $1340 per person if booking more than four weeks in advance. On average the very cheapest time to fly is early December with an average ticket price of $704. Due to high demand the most expensive time to fly is early August, with an average price of $1374. Planning your trip to low-cost times can easily save you $670 on economy flights and even more on first-class flights. Generally, any price below $1054 can be considered a good price for a round-trip STL to MAD flight.

See below for a graph of average weekly prices for the STL to MAD route. All prices are for round-trip tickets in USD.

STL to MAD Flight Prices

Compared to other flights, the STL to MAD flight is priced close to the average and costs slightly more than the average flight leaving from St. Louis. The average price per mile (for a direct flight) is $0.15, which is far below average.


Flight Prices by Day of the Week

Tuesday is usually the cheapest day to fly to MAD, and Monday the cheapest day to fly back into STL. Saturdays are the most expensive days to fly to Madrid, and Fridays are the most expensive days to return to St. Louis. Selecting flights on the least expensive days could save you up to $91 (8%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Tuesday and returning a week later will cost an average of $958. Return trip prices are from the MAD to STL flight, and often highlight the quality of our data in showing the same trend.

Departing Prices by Day

Departure Day Prices

Return Trip Prices by Day

Return Day Prices


Nonstop Flights and Layovers

Travelers looking to fly from STL to MAD can generally find a 1-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 8 hour 56 minutes may not be realistic.


Flight Hacking STL to MAD

Flight hacking is when you book two tickets instead of a layover, sometimes with different airlines. You will need to either bring only a carry-on bag (highly recommended) or leave yourself plenty of time to go through security again. Flight hacking is completely allowed, but airlines don’t always tell you the cheapest way to get from STL to MAD — but Champion Traveler does!

Hack #1: New York, NY (STL > LGA > MAD)

  • Price for both tickets: $551
  • Average savings: $503 (47.72%)

See STL to LGA flights

Hack #2: New York, NY (STL > JFK > MAD)

  • Price for both tickets: $559
  • Average savings: $496 (47.01%)

See STL to JFK flights

Hack #3: Newark, NJ (STL > EWR > MAD)

  • Price for both tickets: $573
  • Average savings: $481 (45.64%)

See STL to EWR flights


Flight Questions Answered

Still have questions about flying from STL to MAD? We’ve got answers.

Which airlines fly this route?

You can find 29 major airlines flying this route most often: Aer Lingus, Aeromexico, Air Canada, Air Europa, Air France, Alaska, Alitalia, American, Austrian, British Airways, Brussels Airlines, Cape Air, Delta, Finnair, Frontier, Iberia, Icelandair, KLM, LOT, Lufthansa, Norwegian, Norwegian Air International, Norwegian Air UK, SWISS, Tap Air Portugal, Turkish Airlines, United, Wamos Air, WestJet, and potentially more during busy seasons.

How far away is it from Adolfo Suarez Madrid Barajas Airport to St Louis Lambert International Airport?

The distance between the two airports is roughly 4416 miles or 7107 kilometers.

How long does it take to fly from STL to MAD?

The real-world flight time for a nonstop STL to MAD flight is about 8 hour 56 minutes.

How many flights go between St. Louis, MO and Madrid?

It depends on the day of the week and the date, but a typical day might have around 52 available flights from STL to MAD.


Airport Location Info


Departing Airport

Origination code STL
Origination airport name St Louis Lambert International Airport
City St. Louis, MO
Country the United States
Latitude 38.7
Longitude -90.4

Return Airport

Destination code MAD
Destination airport name Adolfo Suarez Madrid Barajas Airport
City Madrid
Country Spain
Latitude 40.5
Longitude -3.6


Other Resources

Please note that while we’ve worked hard to analyzed tens of millions of flights to get you this data, we do not calculate current live prices or guarantee pricing. Please see our partners using the links above for current offers.