This is a great thread.

We're hoping to fly PEK-HKG-SHA (we are arriving in China in PEK and leaving China from SHA, so that's why we need a rather odd route instead of just going PEK-SHA-HKG) and it looks like prices for the PEK-HKG segments are ~US$370/$490/$580 for Y/J/F and that HKG-SHA are about $150 less across the board. Are these flights also available for less if purchased in PEK?

Someone mentioned flying to/from Shenzhen if you want to get from PEK/SHA to Hong Kong and taking a 45 minute ferry to get to HKG. There will be 4 of us, and if going this route saves ~US$300/person, then it's well worth considering if it's relatively easy to do. I looked at the TurboJet website and the ferry runs pretty often (and it would certainly be easy to pick flights that match up well with the ferry schedule). How long should we budget to get from Kowloon to the Shenzhen airport? Is this method pretty easy?

Thanks.