Hi all,

I want to fly London - PHX, carrying my cats with me in cabin. As far as I can tell, LH, AF, KL, and AY are the likely carriers to accept in-cabin pets for that first leg leaving the UK (I'll make another post on the pets sub-forum to verify that). I'm trying to use ITA Matrix to restrict the first leg to those 4 carriers. Any tips? I've tried putting in the routing codes field, and in the extension codes field, but both end up with no results. I don't need all legs to be with those airlines - just the first leg that would get me out of the UK with the cats. Any thoughts on how to properly specify that search? Many thanks in advance!