Searching Air France, we found seats departing YUL on Tuesday, April 25, returning from MAD on Thursday, May 4. Outbound flights connect via Paris, with return flights connecting in Amsterdam.
Other dates are also available for travel from fall through late spring.
See our Montreal YUL fare listings for a complete look at current finds.
Need a room in Madrid? Here's a look at what's available on Hotelwatchdog for the above travel dates.