Leaving on a Friday is a viable option for saving on travel. Heavily demanded days of the week can typically drive up the prices you see. Booking your travel for a less competitive day can save up to 90% on the overall cost on flights from Grand Junction to Harrisburg.
Flights from Grand Junction to Harrisburg lean towards being more expensive in December. Prices are generally better when you fly from Grand Junction to Harrisburg in August, with the cheapest ticket starting at $49.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Grand Junction to Harrisburg as you normally would.