Celestyal is discounting cruises by up to 70% on new bookings made by August 31.
The promotion gives a cruise-only lead in of £249 per person for three nights in winter from Abu Dhabi.
The offer covers the line’s 2024, 2025 and recently launched 2026 and early 2027 programmes.
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Savings of up to 50% are available across 2024 to 2027 sailings, with additional discounts of more than 70% on select cabins.
The offer also includes further reductions of 30% on third and fourth passengers sharing a cabin.
Among other offers, three-night 2025 Aegean sailings are down from £690pp to £269pp.
Chief commercial officer Lee Haslett said: “Our new summer savings bonanza delivers unmissable cruise experiences across our expanded sailing programme, at truly unbeatable value.
“By launching our sailing programme through to March 2027, it has enabled us to offer early booking savings on our eye-catching new Arabian Gulf and Adriatic voyages and our much-loved Mediterranean cruises.
“There’s never been a better reason to either return to Celestyal or to try us out for the first time.”