Book a flight with Etihad Airways by 4 June 2015, and you will currently earn bonus miles with its frequent flyer scheme: quadruple Etihad Guest miles in First Class and Business Class, and triple miles in Economy.
To earn the bonus miles, you will first also need to register for the offer here before 4 June. While you need to register and book by this date, the offer then applies to any flight taken up to 29 February 2016.
The bonus miles will be offered on Etihad Airways operated flights, and codeshare flights operated by Etihad Airways Partners.
The full terms and conditions, including travel blackout dates, are available here.
Note that in addition to this Etihad Guest bonus mileage offer, Etihad is regularly offering well-priced Economy Class and (in particular) Business Class flights on its global routes. We set out the worldwide offers currently available here.