Need to fly to various cities in Asia at the beginning of end of main tourist season (in most of the destinations) consider this budget option based on a Star Alliance member Air China. Return flights from London are starting at £328 incl. all taxes and checked bag. Air China conveniently offers free hotel during layover in Beijing. More details here. Look for flights to Philippines (Manila, Thailand (Bangkok, Chiang Mai, Phuket). Malaysia (Kuala Lumpur, Singapore. Myanmar (Yangon), Indonesia (Jakarta). Taiwan or Hong Kong. You can also book multi-stop in Beijing on your way for additional £60.
Travel dates are then from 28th of October to 4th of December 2018 or in March 2019. Based on date of your outbound flight from the UK to Asia. Current Air China promo sale is running till end of June. In most of the cases max stay is 3 months. Below you can refer to our booking sample on each of the routes. Need an accommodation in South East Asia you can use Booking.com, Hotels.com. You can easily compare all available travel dates to the destination you need directly at Air China.
Booking sample of Air China cheap return flights London to Asia from £328! In this case you would fly from the UK to Manila on 11th of November. Your return flight from South East Asia back to London would be then on Saturday, 24th of November 2018.