Just booked an economy flight from regional uk airport with KLM via Amsterdam to Bkk for start of June. ┬г495 from Uk, with good departure times. Outward flight has short stop-over in Ams with the Ams to Bkk leg only 10.5 hrs. I will upgrade later to Economy Plus/comfort or something, but the base cost is the least expensive for some time.
Was also looking to stay in Bkk at the start of the June visit and found rooms at the Ballys, Silom (now D'varee silom) for only Bt1200 per night. Always enjoy my stay there, an easy trip from airport and well located for first few days for Silom Sois 2-4, Soi Twillight, BTS and easy to get taxi for Rachada.
Mosaik, Pattaya off-peak rates also still at the same level for a few years now.