What is the best ways to travel from Bangkok to Hua Hin and then from Hua Hin to Pattaya?  I will be visiting in about 7 weeks and have difficulty researching this question.  Does Bangkok Air still fly from BKK to HHQ?  What options beyond the bus system are available?

Believe most prefer travel by train to Hua Hin.  Little longer than bus but more interesting (at least once).

From Hua Hin you might be able to charter a taxi/van to Pattaya but it will have to pass through Bangkok.  Or take bus to Bangkok/taxi to east bus station/bus to Pattaya.

Bangkok-Pattaya is between 800-1500 by taxi if you want to take that option (will take you door to door).  Expect you could get about the same rate to Hua Hin.

Don't know about flights but would not consider them for this short a distance.