Due to multiple factors, expect to potentially pay more when booking in December. For low rates, May can be a great choice for travel to Busan. Flights to Busan from Edmonton in May are about C$ 1,214 on average during May, but can be found for as low as C$ 820.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Edmonton to Busan as you normally would.
Japan Airlines is one of the carriers that may have flexible change policies. You can use our site to filter for other airlines that may also have this kind of flexibility.