Travelers have found it’s best to book a flight 45 days in advance to save up to 29% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 45 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Great Falls to Narita 1-2 weeks in advance for as low as $642, or $865 for flights within the next 24 hours.
Flights from Great Falls to Narita lean towards being more expensive in July. Prices are generally better when you fly from Great Falls to Narita in April, with the cheapest ticket starting at $341.