Travelers have found it’s best to book a flight 17 days in advance to save up to 5% 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 17 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 Montana to Costa Rica 1-2 weeks in advance for as low as $393, or $422 for flights within the next 24 hours.
Due to multiple factors, expect to potentially pay more when booking in December. For low rates, October can be a great choice for travel to Costa Rica. Flights to Costa Rica from Montana in October are about $404 on average during October, but can be found for as low as $205.