To save up to 20% on this flight, we recommend booking at least 35 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Kalispell to Barcelona Intl from $801 1-2 weeks out and tickets from $850 for flights departing within the next 72 hours.
Flights from Kalispell to Barcelona Intl lean towards being more expensive in June. Prices are generally better when you fly from Kalispell to Barcelona Intl in November, with the cheapest ticket starting at $455.