Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Qatar to Grenada as you normally would.
The Qatar to Grenada flight path was viewed by 32 users in the past month. Keep an eye out for changes in search interest prior to high and low season.
This is defined as Doha Hamad Intl Airport (DOH) and St. George's Point Saline Intl Airport (GND). Codes like St. George's Point Saline Intl Airport are often used to just call airports uniquely.