Early bookings discounts of up to 20% are being offered by G Adventures on 2018 polar voyages.
The deal runs until July 3 and covers expeditions in Norway and the Arctic in 2018 and Antarctica in 2018-19 on the vessel G Expedition.
The 20% price cut applies to an 11-day Norwegian fjords trip from Tromsø to Bergen now starting at £2,159 per person.
Managing director Brian Young said: “When sailing on G Expedition, travellers have the benefit of having plenty of shore time, with all excursions included in the cost of their trip. They’ll also see the unforgettable scenery from the comfort of both indoor and outdoor viewing spaces.
“The food is top-notch, and there is a team of expert expedition guides and ‘photographer-in-residence’ on board to provide greater learning opportunities.”