Heli Rafting & Glacier Walk


Our most exclusive and remote Helicopter rafting tour!
Start your day with an unforgettable Scenic Helicopter flight followed by a 15 minute Glacier Walk with Alpine Air.  After the glacier stop-over get a bump to your rafts for a 12 river mile float from mountain glacier headwaters to the Turnagain Arm ocean.  You will experience the entire amazing watershed of the beautiful 20 Mile Glacier River Valley.

Access the remote glaciated Chugach Mountains with Alpine Air Alaska; there is no better view than from a Robinson R44 helicopter.  Buzz the Twenty Mile Glacier and see the grand scope of the Chugach Mountains.  Land on the iceberg-laden Twenty-Mile Lake for your private Alaska raft adventure down Twenty Mile River.  Float 12 stunning miles downriver to an ocean pick-up on Turnagain Arm at the Seward Highway. Keep a good lookout for wildlife: bears, moose, bald eagles, and salmon.

2022 Available Dates: May 30 – September 10

My favorite aspect of this trip is how few people actually visit 20-Mile Glacier, but those who do, get to experience raw, untouched nature – it is truly breathtaking upon arrival.  – Justin Siemens – Chugach Adventures’ Operations Manager and Guide Since 2012.  Born & Raised in Anchorage, AK.


  • 8:30 AM, 10:30 AM or 12:15 PM Departure Times.
  • Minimum of 2 Guests required to book.
  • Heli Rafting Departure from the Alpine Air Hangar at the Girdwood Airport.
  • 25-minute unforgettable scenic flight of the surrounding Chugach Mountains to Twenty Mile Glacier Lake, Alaska.
  • 15-Minute Glacier Landing with Alpine Air on 20 Mile Glacier
  • Additional Helicopter Scenic Flight Time available for an additional cost.
  • Catered lunch, drinks, and snacks provided.  (Please let us know ahead of time of any dietary restrictions: vegetarian, gluten-free, allergies etc.)
  • Rain ponchos, rubber boots, personal flotation devices/life jackets are provided.
  • Twenty Mile River Float is a Class I & II (With High Water) braided river, no big rapids.  Most guests will not get splashed with water.  If you are concerned about getting splashed you can request a spot in the raft that is NOT “splashy” when speaking to your guide.  This trip is suitable for ages 8 & up.

What to Bring:

  • Thick socks (to wear with our rubber boots)
  • Warm clothes (wear synthetic layers and bring the raincoat)
  • Warm hat
  • Gloves
  • Binoculars
  • Camera

Cancellation Policy for Day Tour Bookings:

Cancellations made 10 days or more in advance are 90% refundable.  

Cancellations within 10 days are nonrefundable.