We fly out of Seattle when we go because it is so much of a savings. We are on the island and we still have at least 1500 for our family even with the ferry costs.
We just got flights on Air Tran for 1200.00 US for 3 (Dh, DD 2 and myself) of us in Sept. In Dec we are flying Alaska air and it was quite a bit more than Air Tran but it's a direct flight. Air Tran has a connection.
We paid 600.00 Canadian per ticket for Alaska Air. We figured the extra cost was worth it for the direct flight when we have so many more people. (Dh, DS 14, DS 12, BFD 15, DD 3, DN 21, and myself)
We did check out flights from Comox, Victoria and Vancouver. Air Canada did have some good deals for awhile but they were gone before I was able to book.
If you have time just keep checking them and when you see a good deal jump on it. And they seem to have cheaper rates listed late in the evenings.
I check Air Tran, Jet Blue, and South West out of Seattle, and Air Canada or West Jet out of Comox or Vancouver.