Spirit of Adventure will embark on a five-day Taste of the Continent cruise on 5 October sailing from dover, taking in Rotterdam, Amsterdam and Zeebrugge.
The cruise leads in from £1,156pp.
Then on 24 October, Spirit of Discovery will set sail on a 22-night Treasures of the Croatian Coast cruise, exploring the Adriatic.
Besides Hvar and Split, the itinerary features Venice, Valletta and Kotor, with calls too in Malaga and Mahon (Menorca).
Prices start from £6,299pp.
Saga is currently discounting its round-Britain cruises by up to 35%.