"In Island Flyer" Not in Wii Sports Resort

There is no "In Island Flyer" activity in Wii Sports Resort. You may be confusing it with:

• Island Flyover (Wii Fit / Wii Fit Plus): Airplane tour of Wuhu Island with balloon popping, landmarks, time trials.
• Air Sports (Wii Sports Resort): Includes Skydiving, Island Flyover (plane), and Dogfight (multiplayer) — but called "Air Sports," not "Island Flyer."
• Pilotwings Resort (3DS): Separate game with similar island flight missions.

Check which game/activity you're recalling — Wii Sports Resort's flight content is under "Air Sports" at the airport.