If your flight is cancelled and you’ve booked a package holiday, you are entitled to a suitable alternative flight or, if that’s not possible, a full refund.
The Package Travel, Package Holidays and Package Tours Regulations 1992 define a 'package' as follows:
The Package Travel and Linked Travel Arrangements Regulations 2018 define a 'package' as follows:
A package holiday is a combination of at least two different types of travel services, which are listed below:
It counts as a package holiday if your travel company:
If you haven’t booked a “package holiday”, but you have booked other services, such as accommodation but this was done separately to your flight, you may not be able to recover that cost.
A refund would come from the accommodation supplier, but only if this is covered in their terms and conditions and it may be left to their discretion.
In addition, you should contact your travel insurance provider to find out what cover is available under your policy with them.