Gallatin River Guides. Gear and Guides in Big Sky, Yellowstone & Southwest Montana. Since '84: Visit us as a customer. Return as a good friend.

Montana fly fishing trips, guides, and gear

Gallatin River Guides is Big Sky's home to honest fishing info, guided fly fishing trips and instruction on the waters of Montana and Yellowstone Park, renowned customer service, and the gear for near and far.

Montana Fishing Trips and Vacations. Rivers we fish:

  • Missouri

    Missouri River flow: 3820 cfs

    Missouri river Rainbow trout

    The Mighty Mo, a river that thinks it’s a spring creek. Don’t be fooled by the slow current and peaceful surroundings, my friend: This is big water with lots of big fish. Read more.

  • Spring Creeks
    Angler on a Paradise Valley spring creek

    Year-round hatches. Stalking sipping trout. And scenery to die for — that is fishing the spring creeks with Gallatin River Guides. We love these waters and guide them regularly. Read more.

  • Upper Madison

    Upper Madison River flow: 948 cfs

    Upper Madison trout

    Famous fly fishing waters. Our guides love this water for its beauty, it’s dry fly fishing, and it’s technicality. Caddis, stoneflies, mayflies, and midges dominate this river, making for hungry and happy trout. Read more.

  • Lower Madison

    Lower Madison River flow: 1650 cfs

    Lower Madison trout

    Float fishing abounds on this local river. Thirty minutes from our shop and offering hatches of caddis, mayflies, and stoneflies, this is a great beginners river holding some big fish for those looking for a challenge. Read more.

  • Gallatin

    Gallatin River flow: 2210 cfs

    Gallatin river in the Fall

    Big Sky Montana’s home water. Fly fish right out our back door. With over 3,500 trout per mile, this river is why we are here. Fish it with us and discover it’s treasures and it’s secrets. Read more.

  • Yellowstone

    Yellowstone River flow: 8850 cfs

    Yellowstone River at 26-Mile access

    Home to four species of trout, some of which are trophy brown trout and many of which are native Yellowstone cutthroat. Near Livingston and Yellowstone Park we fish this beautiful river. Read more.

  • Yellowstone National Park
    Cutthroat Trout

    Yellowstone National Park is home to several streams that feature native Yellowstone Cutthroat trout. Slough Creek, Pelican Creek, the Lamar, Gardiner, and Yellowstone rivers all harbor these beautiful, easy-going fish. But, be ready, because they may be easy-going, but they’re ready for a tussle once caught. Read more.

Fishing is what we do.
And been doing it right for nearly 30 years.

Gallatin River Guides is Big Sky's year-round fishing-only shop and outfitter serving the Gallatin, the Madison, and Yellowstone National Park. We fish a ton. Period. Fishing is what we do - not skiing, not biking, not backpacking. We do one thing and we do it well. From beginner to expert, from the Madison to the spring creeks, GRG is your source for fly fishing in Big Sky.


Montana Trout Tours

406 on the Fly logo

Want the best of Montana fly fishing in one week? We’ve teamed up with Montana Fishing Outfitters to offer the 406OnTheFly Trout Tour. It’s two or three days of float fishing the fantastic Missouri River. Then it's a quick trip down to Bozeman/Livingston and a float on the Yellowstone or Madison Rivers plus a day or two in Yellowstone Park or on the spring creeks. All with some of the best Montana fly fishing guides. Or you can do it starting in Billings and ending in Bozeman, whatever is more convenient, the fish certainly won't care.

Contact us today to plan your trip.

Montana Fly Fishing Trips

Plenty of flies to choose from . . .

Spring is here in southwest Montana. The Upper Madison opens May 16 and we offer fly fishing on Bozeman, Big Sky, and Yellowstone Park rivers and streams. Learn to fly fish? Our Big Sky fishing guide trips get you on the water when the fishing is the best and with fun, patient, and expert professional Montana fly fishing guides. Contact us today to book your Big Sky fly fishing guide or your Bozeman fly fishing trip or you Montana vacation. Fly fish with fishing guides in Montana for the Upper Madison in May, the Yellowstone in June, and the Gallatin River for anytime of year.  

Need to stock up on gear or want a screaming deal?


Montana Fly Fishing Guide School

Montana fly fishing guide

Want to be a fly fishing guide or dreamed of calling your boss and telling him or her to, well, you know...then come take our fishing guide school near Bozeman, Montana: May 17-23. Apply today. We fish the Yellowstone, Madison, Missouri Rivers and the waters near Big Sky, Bozeman, and Helena Montana. Our fly fishing guide school is committed to professionalism and quality, just like the fishing guides we hire in Montana. It is built on the foundation of great teaching from our world-class instructors, our dynamic and challenging course curriculum, and the best classroom on the planet with the rivers, spring creeks, and lakes of Montana. If you want to make a living doing guided fly fishing trips on the Madison, Yellowstone, Gallatin, and Missouri Rivers, then take our guide school. 

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