Singapore Airlines and SilkAir
Singapore Airlines (SIA) is waiving ticketing change fees for all SIA and SilkAir tickets issued before March 15 for travel dates up to May 31. Simply fill in the form on Singapore Airlines' website. You have to option to either retain the value of your ticket and extend your ticket validity or change your travel plans. You can extend your tickets for use up to March 31 next year, but top-ups still apply for fare differences on the new itinerary.
If your flight has been cancelled, no action is required from you – and you will be able to rebook your ticket at a later day.
For more information, visit the official site here.