Until a few months ago, the NY Times Electronic Edition included T Magazine. Since one could download pdf's, it was relatively easy to see what fonts were in use. However, for some reason, T Magazine is no longer included in the Electronic Edition. Otherwise, I'd be glad to try and answer your query! (Unless BA posted their ad as a raster image, that is).

Funny, looks like the Emirates corporate font to me.

It’s an Emirates ad (as you can see here) ;-)

Indeed it is. I just downloaded the PDF and lest see if I can ID it. If its a Corp. font then Oh well.