Avoya Travel via Dunhill Travel discounts select Celebrity Cruises 7-Night Caribbean 2018 and 2019 cruises with prices starting from $399 per person. Plus, get up to $675 Onboard Credit, 50% off third and fourth guest fares, and free gratuities with select bookings. That yields low starting prices for Celebrity cruises. Additional fees and blackout dates apply. Book this travel deal by March 14 for cruises throughout 2018 and 2019.