FPA depends on your fleet 320 fleet is £590 give or take a few quid. Taxed at your nominal tax rate. Duty pay is £3.19 per hour from check in until you clear on return to LHR. This is taxed at 20%. Depending on your work line you would be between about £600 and 1000 a month if trip heavy.
Staff travel: bit hazy here I am afraid but pilots get a management bookable ticket each year for themselves and nominated travel partners. FO's club world and skippers in first. It is still subject to availability and various rules. It all is done on seniority so if your waiting to get home you can get bumped off by senior cabin crew etc. Personally I think it's a pain in the ass and don't risk using it right now. You also get standby tickets unlimited and a number of hotline tickets.
If you join us on SH the last thing you will be interested in is spending more time in an aeroplane. Anyhow I digress.....all is moderately above average and great at the top
