Icelandair partners with JetBlue and Alaska Airlines as of 2016. Icelandair also partners with Rocketmiles, which is a service that earns airline miles for hotel stays.
Icelandair's partnership with Alaska Airlines includes reciprocal frequent-flier benefits, a codeshare partnership and lounge access at each airline's hubs. Icelandair's partnership with JetBlue allows combined baggage and ticketing transfer, inter-line connection and a codeshare partnership. Virgin America lists Icelandair as a partner on its website but the details of the partnership are unlisted.
Icelandair's partnership with Rocketmiles offers bonus airline miles for booking a hotel stay through Rocketmiles. A minimum of 1,000 miles per night is offered.