Many of these flights are operated by the British Airways 787 aircraft which are new and much more comfortable than most of their fleet and bookings are made through Iberia. The flights will accrue Avios points too.
As mentioned in the previous post Dubai is an hours drive from Abu Dhabi but there is also the option to connect and travel onwards to Asia. This deal could help you get somewhere else at a much cheaper price if you don’t wish to stay in the UAE.
Getting to Barcelona is also very cheap with flights out of London at around £20 in September and October.