For those resident in the UK (and possibly elsewhere), isn't there a tax implication? I'm sure that if my employer provided free air travel, or even gave me a free bus pass to commute from home to my normal place of work, the Inland Revenue would be in touch to get their share of a taxable benefit. On the other side of that, if my local airport was designated my normal place of work and I drove there at my own expense before my employer flew me elsewhere, that would be tax free but for flight crew it would fall foul of the FTL rules.