I am traveling to Udon for a few days but not getting on a bus all the way or being held ransom by bangkok airlines so the cheaper flying alternative route to get to Udonthani is via Phuket. The Phuket-Udonthani flight is at 14.40 daily so i need to leave samui for the 7 oclock ferry then straight to phuket to get the 14.40 flight. It should be easy but i can not find anyone that can or does this route. Does anyone have any sensible and not to expensive suggestions?

Sorry, it`s not enough time. You have to have at least 8 hour from the ferry leave Nathon. The best you can do is to take Bangkok Air from Samui, departure 8.00 a.m.

Thai Airways from Samui return 10.875 baht

You can't do it by bus as it won't arrive in Phuket until around 5pm (if you're lucky!). Easy enough if you have your own car though I'd take the 6am ferry.

If you have no transport the best bet is a flight from Surat Thani to Bangkok then bus it from there I guess.

08.45 surat to bkk arrive 10am promo rate 990 baht inc taxes air asia

17.10-18.10 bkk to udon 1290 baht inc taxes air asia

total 2280

That means kicking about in the airport for 7hours +