If you'd like to have some extra spending money on your trip to Kalispell, then listen up! As any seasoned jet-setter will tell you, avoid booking at the last minute. Airfares are usually more expensive close to the departure date. Don't stop there, however. Do some research and check if there are a couple of airports at your destination. Prices often differ depending on which airport you fly into. Make sure you compare fares across air carriers too. Finally, another easy way to save some money is be ready to book at a moment's notice. If you find a good bargain, don't think twice — snap it up while the opportunity's there.