To save up to 25% on this flight, we recommend booking at least 42 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from New Windsor to Billings from $621 1-2 weeks out and tickets from $734 for flights departing within the next 72 hours.
Due to multiple factors, expect to potentially pay more when booking in June. For low rates, January can be a great choice for travel to Billings. Flights to Billings from New Windsor in January are about $573 on average during January, but can be found for as low as $316.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from New Windsor to Billings as you normally would.