The ferry from Valdez to Whittier does pass by College Fjord, but I believe that the fjord's glaciers are no longer visible from the ferry (they were in the 1970s). So, if you want to see the College Fjord glaciers, you have to take a day cruise from Valdez. Many who have taken both say it is better than the Kenai Fjords NP boat tours from Seward. Others will have to chime in on that because I have only taken the Kenai Fjords tour--three times over 20 years--and not the Valdez tour.
As suggested earlier, there are day-long glacier tours from Whittier as well. However, the well-publicized Portage Glacier tour is NOT a tidewater glacier tour in Prince William Sound. It is a small cruise boat on Portage Lake to see a small mountain glacier, which BTW has massively receded since I first visited it in 1972.
Wherever you decide to do a glacier boat tour, be sure to buy the 2015 Great Alaska Toursaver coupon book before you go. You will save the cost of the Alaska coupon book on just one person's glacier tour. Then all the other things you can use it for really are 2 for 1. They are still $99.99 and you can order one on-line at
Toursaver or buy them at Fred Meyer, Safeway, and many other stores in Alaska.
