Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Phuket City to Seychelles as you normally would.
If you book a flight to Seychelles from Phuket City, you will be flying from Phuket, which is the city’s only airport. Phuket City (HKT) is located 27.5 km from the centre of Phuket City.