This is the reason most people fly in. Halibut and salmon charters anchor the Spit from May through September — the harbor is wall-to-wall six-pack boats by 7am, and most operators will fillet, bag, and box your catch for shipping home. Fly-out bear viewing to Katmai and Lake Clark runs June through August out of Beluga Lake and the airport — pricey, but it's the bears-eating-salmon shot you came for. Kachemak Bay State Park is the other half of the trip: water taxis from the Spit drop you across the bay for day hikes, and the Grewingk Glacier Lake trail is the headline — flat, manageable, finishes at a turquoise lake studded with bergs. From town itself, the Homestead Trail and Diamond Creek give you walkable hiking without a boat. Kayaking, paddleboarding, tidepooling on minus tides, and eagle and whale watching round it out. Winter swaps the catalog: nordic skiing at Lookout Mountain, snowmachining the Caribou Hills, and ice fishing on the lakes off East End Road. Book charters and bear flights as far ahead as you can for July; spring and shoulder season you can often walk on the day before.
On-demand floatplane charter (since 1984) flying a DHC-2 Beaver to Katmai and Lake Clark for guided coastal brown-bear viewing, plus glacier flightseeing over Kachemak Bay.
Brown-bear tours from Homer via Cook Inlet Aviation (FAA Part 135, Cessna 206) to Katmai and Lake Clark — classic ~3-hour trips plus a shorter "bite-sized" Lake Clark option.