Qatar Airways starts a service from Doha to Miami and, as is the case with most route launched, offers bonus miles for trips starting or ending in Miami between June 10 and September 15, 2014.
You can earn 7,500 bonus in economy and 15,000 bonus miles in premium cabin. These are both one-way so you can double the number of miles earned for return trips.
You must register for this offer and you can do it on Qatar Airways website here.
Note that you can earn the bonus miles unlimited number of times during the promotional period.
This is a nice bonus offer if you have plans to fly on this route during the promotional period.
Here are the terms and conditions of this offer:
The bonus Qmiles offer is only valid for Privilege Club Main Members and not for Family Members. To be eligible for the bonus Qmiles, flights must be taken to or from Miami between 10th June and 15th September 2014. Members may use the offer more than once during the offer period. Not valid in conjunction with any other offer.