Rhayader
BA have stated that that they will run a 100 % operation, if , and thats a big IF , the striking Minority of Cabin Crew take any further Industrial action , so taking Willie at his word I would go with BA.
, so that opens up direct LHR-LAS flights for you........ Going on your original route you will find that the LCY operation was completely un affected by the last action.....( the A318 is operated by LGW cabin crew )