Due to multiple factors, expect to potentially pay more when booking in February. For low rates, July can be a great choice for travel to Grand Forks. Flights to Grand Forks from Colorado Springs in July are about $393 on average during July, but can be found for as low as $308.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Colorado Springs to Grand Forks as you normally would.