There are some flights from cheap air companies to Baska.
On pages http://www.rijeka-airport.hr/index-eng.asp you'll find companies that are flying there and all neccessary information.
Airport is called airport Rijeka and is situated on Island of Krk.
If you need to come to Baska from there (40 min drive), most convinient would be to call phone number +38598308999 and ask for assistance (they will organize that somebody picks you up on airport and brings you to Baska)
You can reach Baska by car thanks to the connection to the mainland at Kraljevica by the Krcki bridge.Tito's bridge, at the time an unique engineering solution to Krk's increasing demand for road access, was officially opened in 1980.
The bridge has a length of 1430 m, incorporating twenty pipelines carrying water and oil.
You have to pay a toll to access the bridge.
Then follow the signs to Baska.