Travelers have found it’s best to book a flight 61 days in advance to save up to 78% 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 61 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 Kalispell to Lisbon 1-2 weeks in advance for as low as $1,313, or $1,956 for flights within the next 24 hours.
Flights from Kalispell to Lisbon lean towards being more expensive in August. Prices are generally better when you fly from Kalispell to Lisbon in February, with the cheapest ticket starting at $497.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Kalispell to Lisbon as you normally would.