It's quite doable but it requires thinking and tough decisions only taking things you know you will use, not things you think you might. I regularly do fly in solo hunting trips in Alaska. Of course by the commercial airline flight I am limited to 50 x 2 on the bags including the weight of the luggage itself. But more importantly I limit myself to a backpack total of 75 pounds. That includes backpack itself, gun, ammo, tent, sleeping bag, stove, fuel, 5-7 days food, meat bags, saw, axe, camera, camcorder, small amount of emergency equipment, ultralight fish equip, clothing, and a 5 pound bear resistant food container.
I'll be leaving next week for a solo drop-off spring bear hunt. I'll be flying commercially with a gun case typically 40lb and my duffle bag typically right at the 50 limit, and maybe 10 more in my carry-on. With it out of the gun case and duffle bag it will be about 75 on my back. For the bush flight pack things in smaller soft bags, large hard cases don't work in small bush planes.
Here's everything in a 75lb pack for a fall alpine deer hunt.
Here's another with about an 80lb pack, this was a 10 day backpack trip with my daughter. I'm carrying a little more than usual because of the food in 2 bear resistant containers and taking some of my daughters share, her pack was about 35. So about 115 total for everything for 2 people for 10 days.