Also, if you have time to spare, getting a cheap flight to somewhere in Europe with little taxes and then using the airmiles to book a flight from there to the long-haul destination means you avoid the UK's high long-haul air departure tax.
Please don't fall for BA's propaganda. Even on the cheapest JFK return - about £440 - the UK long haul departure tax is only 17% of the ticket price. By comparrison the BA fuel bill (which you pay on a reward ticket) is about 33% of the ticket price.
US taxes and airport fees:
£44.70
USDA APHIS Fee (XA) £2.90
US Immigration Fee (XY) £5.00
US Customs Fee (YC) £4.00
US International Arrival Tax (US) £12.80
US International Departure Tax (US) £12.80
US September 11th Security Fee (AY) £4.00
US Passenger Facility Charge (XF) £3.20
UK taxes and airport fees:
114.65
United Kingdom Air Passengers Duty (GB) £73.00
United Kingdom Passenger Service Charge (UB) £41.65
BA fees: £143
BA YQ surcharge (YQ) £143.00
The actual fare (this is what the airmiles eliminate) is £69.50
Like rail tickets, air tickets and airmiles usage is full of tricks and loopholes- but a BA airmile is worth about 1p if used correctly
Depends if you'd buy the same. I went to Austrailia in the summer - 4 of us - using 2x241s, 2xGUF2s, and a joker. Flew in Business to Singapore, First to Austrailia, Business back. Cost £2200 return in taxes and fees plus 325k avios.
Now on paper even the most inflexible business class return without the layover or the first segment is about £18,000 for 4, so 5p per avios.
However as there's no way I'd have spent £18k on flights I didn't actually make a £16k saving. Given that a cashback amex card should net you about 1% on average has I earned 325k through cashback it really would have cost £3250, putting the total cost of the flights at £5500, or £1300 each. Not too bad, but a long way from "free".
In reality I "earned" the miles through sitting on my backside a lot for some years, so the cashback option wasn't really an option, and the 241s on the credit card were required, but cashback would only be worth somewhere in the £300 vacinity, putting the cost of the trip to about £2500.
But without the miles I'd have probably flown emirates in economy one-hop from Manchester for about £4000, so the miles were really worth £1500 and comfort, or about 0.5p per mile and comfort.