Seattle

Any one have any info on dad's trip ? Trying to figure out what time to get to Seattle and surprise them. Flight times would be nice. My book says Ship leaves Seattle 4pm. Saturday. Not sure if I have a ride or not. The guy at work is having trouble at home and may not go. Not cause wife won't let him but because he might move out that weekend. I'm going to look at taking the ferry across from Nanaimo and then catching a bus from Vancouver to Seattle. If any one can help it would be appreciated.