These cheap fares can be very misleading. I have to fly from an Asian port to London, then on to Kent, so I checked the fares on the Internet.
Air Asia cost $1,180. That was before added costs for meals and drinks. It also involved a long stopover in KL and arriving at Stansted at an ungodly hour.
The Gulf carriers were slightly cheaper, but with full service included, two-hour stopovers and arrival at Gatwick or Heathrow.
Finally, I checked my local National Airline, which is a very good in terms of safety and service. $866, direct to Heathrow arriving at breakfast time. Also, a pre-booked car to take me from Terminal 4 across London to my destination doorstep, a lot less than from Stansted (where's that, Guv?) No contest!