To find the return flight distance between Gangtok to Gangtok via Lachen, Gurudongmar Lake, Yumthang, Lachung, start with entering the locations in the control and click on Return Flight Distance. You can also add multiple destinations in between while returning from a location. If you are not aware of the routes, you can check the
Gangtok to Lachen Route via Lachen, Gurudongmar Lake, Yumthang, Lachung.