Question : Should you take that vacation to Chiang Mai in the next 30 days?
Answer : Since low prices are preferred, look at Apr 11th. As of Mar 20th, it's showing the cheapest ticket sales at $801. That is 45% below the average price for this route, so you can spend that extra money on an adventure in Chiang Mai.
Question : What price range should you expect when booking from Portland (PDX) to Chiang Mai (CNX)?
Answer : Prices for this trip tend to change much more than other flights from the United States. They can range anywhere from $797 to $4,093. Prices tend to be lower the further out you book.
Question : How long do most people stay in Chiang Mai?
Answer : Of course you're not most people, but if you were, you'd stay roughly 30 days.
Question : Would you be willing to change your travel days if it saved you money?
Answer : In April, Tuesday is your cheapest day to fly. Flexibility is paramount when booking travel plans in order to keep travel costs down.