British Airways has a full schedule of flights all year from London
Gatwick to Dubrovnik.
Jet2.com flies from Edinburgh, Belfast, Manchester, and Leeds to Dubrovnik.
E-bookers is an excellent flight-comparison site that often has the lowest available fares.
Low-Cost Carriers
A lot of low-cost carriers offer flights to Dubrovnik from April to October but there are clearly fewer the rest of the year. The best way to find these cheap flights is to use whichbudget.com which has up-to-date information on all budget carriers to Dubrovnik . (Most flight-comparison sites exclude low-cost carriers) Check out this handy widget:
Flights from North America to Dubrovnik
There are no direct
flights from any North American airport to Dubrovnik. Chances
are, you'll get the best deals if you change in the UK or Germany.
Reliable Expedia is always a good first stop in checking for cheap flights to Europe.
Domestic Flights to Dubrovnik
Croatia
Airlines has several flights a day between Zagreb
and Dubrovnik which take about an hour. There are no direct
flights linking Dubrovnik to other Croatian cities; you must go
through Zagreb.