Get directly from your Krabi City hotel to Krabi Airport with a private departure transfer. This book-ahead ground transportation service is offered 24/7. Just reconfirm your pickup time and hotel location 24 to 48 hours before your transfer is scheduled, and a driver will arrive to take you to the airport on time and in style.
I was told that I would be picked up at 5pm to get to the airport. On waiting in reception for half and hour I ended up getting the hotel staff to ring the local contact to find out what was happening. I then had to wait a further ten minutes until the car arrived. The rest of the journey was fine and I made my flight but didn't really need the stress.