From Havana fly direct flights to Mexico City and Cancun. In the first case, the flight time will be 3-3, 5 hours (sometimes they make docking in Cancun), Aeromexico, Cubana and Iberia fly. Cancun can be reached in 1 hour and 10 minutes by Aeromexico, Cubana or Blu-Expres flights.

In addition, you can get to Cancun and from Varadero, there are stopping many connecting flights from Europe (Amsterdam, Brussels). Travel time is about 2 hours.

In any case, a lot of flights take place on the day, connecting the two countries, so that finding the best option will not be difficult. But, traditionally, to find the most budgetary options - you have to buy tickets as early as possible (for 3-5 months, for example).