Flight times vary depending on what airport in India you fly out of and what airport in Sri Lanka you fly into. For example, flying from New Delhi Indira Gandhi Intl to Colombo Bandaranaike Intl takes 3h 20m on average. On the other hand, flying from Mumbai Chhatrapati Shivaji Intl to Colombo Bandaranaike Intl takes 2h 25m on average. Keep in mind that it’s always quicker to opt for a non-stop flight, so be sure to check momondo to see if there are any available for your route.