Alto's Adventure - Fly Through an Archway - Level 39 Mission 3
Skip to 02:50 to see the completion of the mission.
Played as : Maya ( for better aerial mobility )
Trust me, it took me a while to realize what an archway was in the game.
Note: Look out for archways when you approach villages with a lot of roofs and buntings. Your archways could be in between two buntings or at the either end.
This is not a tutorial or something, just for those who struggled to know where the archways were.