At start, the most important is term. When you wish to fly for a penny, try to avoid hot season, like summertime for instance (www.lot.com/airline-tickets (https://lot.com/airline-tickets/flights-to-germany)/flights-to-tokyo). Cause in time of this period of year, the weather is finest, so most of tourists prefer to go to Japan then. When you only want to take a trip, see a lot of local attractions, you will enjoy spring or autumn. Just avoid winter, cause Japan is an Island, so it will be raining all the time.
More local, but also interesting is Croatia. When you want to go there for a holidays during the best temperature, the best is to book cheap flights to Zagreb. This place isn’t situated close to the sea, therefore this connection is far less common then to
Split and Dubrovnik (straight from the source). Because of that, you are able to get the finest deal, even during famous season. And it is not hard to get from Zagreb to seashore, you just need to rent a vehicle or use a train. It is going strictly from the airport to the famous resorts.