London to Cuba Only £280 ($404) Round-Trip

This isn’t generally applicable to Americans, but it’s a great deal for citizens of other nations.

http://www.secretflying.com/2016/05/london-or-manchester-uk-to-cuba-from-only-280-roundtrip/

The fare is available for some departure dates this month. Rather than arriving at Havana, the destinations are the Cuban cities of Varadero and Holguin.