If your flight is cancelled, you should call the airline to find out why it was cancelled. You are entitled to a full refund of your ticket purchase regardless of the reason for the Flight cancellation. and this airline must rebook you on an alternative flight that is more convenient for you. If no other flights are available, the airline is required to provide you with a hotel reservation as well as meal coupons. You should also keep all cancellation documentation, including your boarding pass and any airline emails or letters. This documentation will come in handy if you need to file a compensation claim.