The Phuket airport is fairly large and strangely with almost 3 million passengers a year, it all flows fairly smoothly when you're processing your check-in for arrival or when departing. The airport is still under going an upgrade but many people get a little lost with the fact that they have a terminal 2 that is hidden and passengers need to go to a different section on a different level for certain airlines to be checked in but they need to head back to terminal 1 area to get to the departure lounge. Yes, it's all a little confusing so be thankful you need to be there two hours ahead of time or you will be overwhelmed by the airport confusion. Oddly, they do not have an information counter to provide directions for passengers at the Phuket airport even though there is over 50 different airlines that have routes there.
Many people going for a holiday in Phuket have fears of missing their flight but there are many Phuket airport hotels which are very close by and still makes for a great time but only draw back is, it is not as busy in terms of the famous Phuket nightlife scene as it is in a remote location. However, it is great for a family holiday in Phuket.
The airport interior has a lot of food and beverage stores to grab a quick bite or if you feel you need a last taste of Thai food before heading back. There's also a foot massage and spa at the departure lounge so that could help kill some time or even prepare you to relax for your long flight ahead. Another thing, many do not know that they have a baggage storage service area at the airport. This is good for people that may leave Phuket for a short trip elsewhere in Thailand and return to pick it up later rather than carry everything around. Really useful for golfers with their golf bags.
Overall Phuket Internationl Airport is an adventure in itself but once you've been through it you can easily find your way around for years to come.