Best possible route
 

What would be the best route to include Guilin, Xian and Shanghai. I am planning to start in HK. Many thanks.

Ending where?

Hi rkkwan: I would like to start in HK and return to HK. Thanks,

Geographically, it makes most sense to do a loop. HK - Guilin - Xian - Shanghai - HK; or vice versa. That means the shortest total flight time.

However, that doesn't necessarily means the cheapest. For example, Guilin - Xian has one or two flights a day, and little discount. So, if you want the cheapest total cost, you have to try different combinations to check.

Also, there aren't that many non-stop HKG (Hong Kong)- XIY (Xian) or HKG - KWL (Guilin) flights a day. To save a little bit of money and to get better flight times, you may want to fly into and out of Shenzhen (SZX) instead of HKG.

Hi rkkwan: I will be flying from EWR or JFK. Should fly to HK and then Shenzhen? Isn't Shenzhen quite close to HK? thanks,

From the Hong Kong airport, you can take a ferry to the Shenzhen airport. From the city, you can take a ferry or a "direct" bus.