Etihad Airways is offering for a limited time double miles for business class and triple miles for first class.
This offer is valid for bookings made between August 12-31 and flights flown August 20 – September 25, 2014.
You need to register for this offer on Etihad’s website that you can do here.
Note that flights booked outside of this ticketing window and not eligible for this offer.
Etihad tends to run these double & triple miles offers every few months. I would just hope that the ticketing and flight windows would be greater.
Here are the terms and conditions of this offer:
This offer is exclusive to Etihad Guest members only. Bonus Miles promotion is only valid for flights booked between 12 August and 31 August for travel between 20 August and 25 September 2014. Registration of your Etihad Guest number is mandatory to receive the bonus miles. Triple miles can be earned in First and double miles in Business Class to all destinations. The bonus miles earned will depend on the fare class booked. The bonus miles will be offered only on Etihad operated flights and not redemption flights. The bonus miles earned will be Etihad Guest Miles and not tier miles. The bonus miles will be credited for every eligible flight flown during the promotion period. The bonus miles will be credited within two weeks after the promotion.