Closest Airport to us!
There are car rental companies in Kalispell. Just note that if you are flying in and plan to rent a car, you will need to book far in advance as we almost always have a shortage of rentals in the Flathead Valley during the summer. Other options include Turo.com (it's like Airbnb for cars), but we don't have any public transportation options. We are happy to arrange a ride to pick you up if you need us to!
There are many airbnbs near and on Swan Lake and around the Flathead Valley and Bigfork.
If enough people are interested I can book the group site here which can accommodate many people. Otherwise you can book sites 6 months in advance on recreation.gov. There are some first-come first-serve campsites, but it will be Labor Day weekend so I expect there to be high demand.
This is a state park on Flathead Lake. There are lots of cliffs to jump off of and it is in a great location. It is a further drive to the reception than the Swan Lake Campground.