I've always traveled with my own (S&S coupled) bicycle to all my tours. While this saves on airline bicycle baggage fees, it does mean I have to break the bike down and reassemble it twice and carry/roll/drag it through the airport or train station.
Might there be another option?
I've done a bit of local research and have concluded that for a tour of up to 2 weeks, renting a touring bicycle would be a reasonable option, depending on how you value your time, travel hassle, and shipping fees.
Two weeks would be enough time to ride from San Francisco to LA or San Diego (and ship the bike back) or from Portland down to San Francisco.
I've written
an article with cost estimates, links to shippers and local bike rentals, and a discussion of pros and cons of bringing versus renting a bike should you be interested in more detail.