WOW Air resumes seasonal service to Lyon on June 3, 2018. Searching on wowair.com and using promo code WOWWORLD, I was able to find seats departing Montreal YUL on Sunday, June 3, returning from Lyon LYS on Monday, June 11.
Other dates are available for travel in early June and late August through October. Travel to Lyon on Sundays, Tuesdays, and Thursdays. Return from Lyon on Mondays, Wednesdays, and Fridays.
WOW basic fares only include one small personal item up to 22 lbs. Carry-on bag fees start around $56 CAD (online price) each way for bags larger than 17x13x10 inches. Checked bag fees start around $81 CAD (online price) each way for bags up to 44 lbs. on basic fares. You can purchase WOW plus fares, which include one checked bag, normal sized carry-on, personal item, and standard seat selection for less than purchasing these items separately.
Need a room in Lyon? Here are some places available for the above dates on Hotelwatchdog.