Had reserved flights from IAD to LGW on December, but it turns out they cancelled all of them from November and thereafter.
They rebooked me from JFK, which is at least 4.5 hours away from IAD by car, and gave me the option to cancel and refund within 14 days.
Of course I will cancel.
But I don't think this is a good practice, i.e. changing the airport of origin to a completely different airport and giving you 14 days to ask for a cancellation.
They should have cancelled and refunded automatically.