Flight
Guests who are flying in from Las Vegas might want to use this airline. It is the only direct flight from Las Vegas to Glacier International Airport which is about a 15 minute drive to Whitefish. The only catch is they only fly in on Thursdays and Sundays which is perfect for the wedding, but if you are wanting to stay a little longer it might not be for you. You can fly in on other days through other airlines, but they will not be direct flights.
House Or Rental
For guests who can group up with other people who plan on coming to the wedding, renting a house for your group and getting a rental car to share might be your best option. This is the sight that my Aunt and I use whenever we are in Whitefish looking for a place to stay, but obviously you can choose a different site you like more.
Train
For guests who are not too far from an Amtrak station, there is a station that stops in Whitefish.