China Southern Airlines is offering cheap flights to a number of Asian destinations. Fares include seats, meals and bags. The Bangkok fligh beats the Air Asia fare posted a couple of days ago for $581 which doesn't include bags/fares/seats. It also beats that last deal to Bangkok/Chiang Mai/Yangon by $200. Dates are March to June. The Shanghai fare is $50 cheaper than last week. The fare page states $420 return but don't see those anywhere.
All flights go through Guangzhou so if your layover is over 8 hours you get a free night hotel.
Use Google Flights to find the cheap dates then use Skyscanner to book.
Shanghai, China $483 - Google Flights - Skyscanner
Bangkok, Thailand $569 - Google Flights - Skyscanner
Chiang Mai, Thailand $569 - Google Flights - Skyscanner
Hanoi, Vietnam $580 - Google Flights - Skyscanner
Ho Chi Minh City, Vietnam $576 - Google Flights - Skyscanner
Phnom Penh, Cambodia $570 - Google Flights - Skyscanner
Phuket, Thailand $569 - Google Flights - Skyscanner
Siem Reap, Cambodia $580 - Google Flights - Skyscanner
Yangon, Myanmar (Burma) $582 - Google Flights - Skyscanner
My god that is insanely cheap. If only I had time off and the money