Nok Airways is a good airline and HALF the price of Thai Airways. HOWEVER, this airline is not located at suwanabhumi Airport. They are located at Don Muang, about 40 miles away. Don Muang is the old airport.
What this means to you is that when you fly airlines arriving in Bangkok in the morning, you need to allow at least 3 1/2 hours to clear customs and change airports and check in.
Right now tourism is way down so the hour in the immigration line is only about 20 minutes. But the airport change is about an hour.
