Miles & More is offering a promotion that will award members double miles for certain flights between Europe and the USA.   The offer is valid for flights that are booked by May 15, 2017, for travel that is completed by September 15, 2017.

The eligible flights include Lufthansa, Austrian, and SWISS operated flights.

For Lufthansa operated flights the routes eligible for the mileage bonus include Frankfurt to New York JFK, New York Newark, Los Angeles, Boston, San Francisco, Orlando, Miami, Seattle, San Jose and Tampa, or from Munich to New York JFK, New York Newark, Boston, San Francisco and los Angeles.

For Austrian operated flights the routes eligible for the mileage bonus include Vienna to New York JFK, New York Newark, Los Angeles and Miami.

For SWISS operated flights the routes eligible for the mileage bonus include Zurich to New York JFK, New York Newark, Los Angeles, San Francisco, Boston and Miami.

According to the webpage that provides the details, it appears that bonus only applies to Economy Class bookings.   Additionally, the bonus will only be credited to the aforementioned routes.  Connecting to other flights that are on the same itinerary do no earn the extra miles.

To be eligible for the bonus miles, you need to register for the promo by visiting this site and entering your information, including your Miles & More number.

Please note that these miles are bonus miles and do not count towards status miles, and the bonus is calculated based on the miles that you fare class offers.

H/T:  Oliver2002 & Flyertalk’s Miles&More Forum