From Havana airport to Varadero you can reach in 1, 5-2 hours: everything depends on how you will get there. There are several options:

By taxi. The transfer fee is approximately 2000-3000 rubles, this is how you will bargain.

With the private trader. To do this, it is better to get into the city, since it is unprofitable at the airport at all. The cost of such a trip will be somewhat cheaper - 1200-2000 rubles.

Viasul (internal Cuban tourist transport). To get to the vizul by taxi from the airport costs an average of 700 rubles (also bargain, you can leave for 400). Take a taxi is better in the departure area. And the vizual to Varadero costs somewhere around 450 rubles.

Get attached to a tour group with a paid transfer to Varadero. Offer a meeting guide somewhere around 400 rubles per person

Travel time from Havana airport to Varadero hotels 2-2, 5 hours, and from Varadero airport to the hotels of Varadero 30-50 minutes