Two smiling anglers in a drift boat hold up a caught trout on a calm forested lake.

Lewis Lake Float – Yellowstone National Park

Angler in a blue jacket holds a spotted brown trout over a boat, with a lake and forested hills in the background.

The Best Brown and Lake Trout Fishing in Yellowstone National Park

Excellent fly fishing for both Brown Trout and Lake Trout

The gin clear waters of Lewis Lake in Yellowstone National Park provide some excellent fly fishing for both Brown Trout and Lake Trout during much of the summer and late in the fall. Depending on conditions, sometimes we fish with sinking lines and others we throw dry flies at cruising trout. We begin guiding on this lake just as soon as the ice comes off the lake after Memorial Day weekend.

A hand holds a spotted brown trout above a mesh landing net over water.

Smiling man in a cap holds up a large spotted brown trout with an open mouth, on a boat near a forested lakeshore.

A hand holds a spotted brown trout just above the water's surface, showing its golden body and dark speckled markings.

Close-up of a hand holding a speckled brown trout, showing its golden-green scales, spotted markings, and open mouth.

Close-up of a hand holding open a fish's mouth, revealing a feathered fly lure hooked in its jaw.

Close-up of hands holding a golden brown trout with red and black spots above a river's surface.

A sunburned man in a wide-brimmed straw hat and sunglasses puckers his lips toward a spotted brown trout he's holding up near a lake.

Fallen tree trunks line a mountain lake shore, with dense pine forest and snow-capped peaks in the background.

Angler holding a large brown trout with dark spots over a boat's edge, fly fishing rod resting below, lake in the background.

Close-up of a spotted trout's golden body and translucent tail fin underwater, near submerged twigs.

Two smiling anglers in a boat hold up a large spotted brown trout on a forested river.

Close-up of a spotted brown trout being held just above water, with its mouth open and a forested lakeshore blurred in the background.

Character of the Water

Sometimes we will fish both Lewis and Yellowstone Lakes in a single day. This mostly depends on the weather and the timing, but can provide a great day fishing for a variety of fish. Come join us for some of this truly great lake fishing in a pristine environment.

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Angler standing in a drift boat casting a fly rod on a calm river, with a guide rowing behind him and dense pine forest along the bank.

Time to Fish

We start guiding on Lewis Lake after Memorial Day, and continue deep into the Fall. Learn how your trip timing will affect the fishing conditions.

View Trip Timing

Smiling man on a boat, his sleeve and shoulder covered in dozens of mayflies, with a lake and forested shoreline behind him.

What’s Hatching

Both fly and spin fishing work very well on this lake and we are happy to guide both types of fishermen.

View Hatch Chart

Fish You Can Catch

Brown Trout

Lake Trout

Smiling angler on a boat holding a large trout, with a forested lakeshore in the background.

Full Day Trip

Trip Includes:

Rods, reels, and waders if needed
Transportation to and from Jackson
Delicious lunch

PER BOAT: $800 FOR 2 PEOPLE

Additional Person: $150 per person (if possible)

Book Your Trip Today

Lewis Lake Fishing Report

What are the fish biting on today? View our latest Jackson Hole Fly Fishing Report update!

View the Lewis Lake Fishing Report

Two anglers in a drift boat on a forested river, one holding a landed trout beside a net while the other rows.

Frequently Asked Questions

Can you fly fish on Lewis Lake in Yellowstone National Park?

What fishing methods are used on Lewis Lake?

How much does a Lewis Lake fishing trip cost?

Can you fish Lewis Lake and Yellowstone Lake on the same trip?

Frequently Asked Questions

What makes Lewis Lake worth fishing?

Lewis Lake in Yellowstone National Park offers clear, pristine water and excellent fishing for Brown Trout and Lake Trout throughout the summer and into fall. The gin-clear conditions and abundant hatches make it possible to spot and cast to cruising trout near the surface on some days, while other days call for sinking lines to reach fish holding deeper. The setting inside Yellowstone National Park makes every trip visually stunning.