Icelandair Customer Club members earn double points on all “shoulder” season flights (April 1 – June 15 and Sept. 1 – 30) booked between Feb. 3 and April 30.

In addition, to mark the carrier’s new service from San Francisco, members departing from San Francisco will also receive double points during high season (June 16 – Aug. 31).

Online registration at http://www.icelandair.com is required.