I booked two business class award tickets from IAD to IST four months ago, when the price was 45K miles per ticket. A few weeks ago, Turkish changed the departure time from 4:45 PM to 12:45 PM. There is a 10:45 PM flight that we would much rather take, as it will be a lot easier to sleep and minimize jet lag. But I have called three different times to customer service, and also emailed with the IAD airport office, and they all keep telling me there are no business class seats available for any other flights that whole week (September 2024). I see available seats, but they're 130K miles.

Can anyone please explain my rights in this situation? Do I have the right to switch to any flight that still has seats available for purchase, even if business class awards are sold out? Or do I only have the right to switch to a flight that has business class award seats available? And if it's the latter, do they have to be the same type of "saver" award seat that I booked? The flights I booked are C class. I would appreciate any tips you may have for this Turkish newbie. I'm tempted to just cancel the flights, but then I'll have a bunch of devalued Turkish miles that I'll never be able to use.