- Introduced
- 2000
- Capacity
- 2,170 – 2,218 (double occupancy)
Millennium Class comprises Celebrity Millennium (2000), Infinity (2001), Summit (2001), and Constellation (2002). At roughly 91,000 GT and 2,170-2,218 double-occupancy guests, they are the smallest current Celebrity ships and materially more manageable in smaller ports than the flagship classes.
All four ships have received the Revolution refit programme, bringing the Retreat, AquaClass, and dining venues in line with newer classes. The smaller hull size preserves benefits that the flagships cannot match — better crew-to-guest ratio, faster tendering, and access to smaller Mediterranean, Asian, and South American ports.
Deployment is deliberately global and often unusual — South America, Asia, Bermuda, the Middle East, Grand Voyages. For guests prioritising ports and itineraries over onboard theatrics, a Millennium-class ship is often the correct answer within the Celebrity fleet.
Ships in the Millennium Class

Launched 2000
Celebrity Millennium
The original Millennium-class ship — Celebrity's classic mid-size platform, refreshed under Revolution.

Launched 2001
Celebrity Infinity
South America and Pacific Coast specialist — the second Millennium-class ship.

Launched 2001
Celebrity Summit
The Caribbean-focused Millennium-class ship — short cruises from San Juan and Bermuda from New Jersey.

Launched 2002
Celebrity Constellation
The Mediterranean-focused Millennium-class ship — Greek Isles specialist and Grand Voyage regular.
Also in Celebrity Cruises
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