Leaving on a Monday 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 8% on the overall cost on flights from Great Falls to Copenhagen.
It’s typically best to fly out from Great Falls to Copenhagen at noon. Doing so could potentially save you 8% on the flight price compared to flying in the morning, which is usually more expensive.