Where are you looking at? ( just being nosey!)Have you been to Bophut before?
There is no one way to find the cheapest flights I'm afraid. Just keep looking at the individual airlines and their prices and also check the likes of Expedia. Do this almost daily as every so often there will be a real bargain. It used to be that you could grab late bargains. I feel now that the bargains are early on- perhaps others will think differently??

After loads of searching we think that a couple of weeks at The Waterfront Boutique Hotel Bophut would be a fantastic first time stay in Thailand .
Akm & Lg

When we were thinking of our summer holiday for this year, that was the hotel we were looking at (We changed destination altogether though). I have been to Bophut but this one is new since our last trip.

Just reread your first post and my advice would be to not go in November. You might see a lot of rain.