Some of the finest trout fly fishing destinations include Michigan's Au Sable River (renowned for its Hex hatch and Holy Water section), Pennsylvania's Penns Creek and Spring Creek, Montana's Madison and Yellowstone rivers, Colorado's Fryingpan and South Platte, and Idaho's Henry's Fork. American Fly Fishing magazine covers all of these in expert destination guides.

A 9-foot, 5-weight fly rod is the most versatile choice for trout fishing across a wide range of rivers and conditions. For smaller spring creeks and intimate streams, a 3- or 4-weight rod offers a more delicate presentation. Larger tailwaters and streamer fishing may call for a 6-weight.

Key hatches that trout fly fishers should know include the Hendrickson (April–May), Sulphur (May–June), Green Drake (late May–June), Pale Morning Dun (summer), Trico (summer mornings), Blue-Winged Olive (spring and fall), and the legendary Hexagenia limbata, or Hex hatch, which produces the largest mayfly hatch in North America each June and July.

Wild trout are born in the stream from naturally spawning adults and are shaped entirely by their environment — they tend to be stronger, more wary, and more beautifully colored than their hatchery counterparts. Stocked trout are raised in hatcheries and released into streams, often less selective but less resilient. Blue Ribbon and Class A wild trout streams are managed exclusively for naturally reproducing wild populations.

Spring (April–June) is widely considered peak season for dry-fly fishing due to prolific hatches. Late summer offers excellent terrestrial fishing with ants, beetles, and hoppers. Fall is a favorite for experienced anglers — hatches of Blue-Winged Olives and pre-spawn brown trout activity can produce some of the year's largest fish. Many tailwaters fish well year-round, including winter.