Leaves in 12 days12 Night Best Of Japan & South Korea
Celebrity • Celebrity Millennium
Sep 23, 2026 · 12 nights
Asia & Indian Ocean
$3,436/person$286/night
View Deal →Celebrity Millennium vs Diamond Princess
Side-by-side cruise ship comparison · Updated January 2026
Diamond Princess is the significantly larger vessel at 115,875 GT, 27% more than Celebrity Millennium's 91,000 GT. Built in 2004, Diamond Princess is 4 years newer, an advantage for travellers seeking modern amenities and design. Celebrity Millennium edges ahead in service with a passenger-to-crew ratio of 2.2:1, meaning more crew per guest.
Score: 2 – 5
Quick Compare
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Category
Celebrity Millennium
Diamond Princess
Size
91,000 GT
115,875 GT
Passengers
2,158
2,670
Year Built
2000
2004
Crew Ratio
1:2.2
1:2.4
Space Ratio
42.2
43.4
Decks
—
—
Length
294m
290m
From Price
$2,151.04/pp
$1,296/pp
Comparison Verdict
Diamond Princess is the significantly larger vessel at 115,875 GT, 27% more than Celebrity Millennium's 91,000 GT. Built in 2004, Diamond Princess is 4 years newer, an advantage for travellers seeking modern amenities and design. Celebrity Millennium edges ahead in service with a passenger-to-crew ratio of 2.2:1, meaning more crew per guest.
| Category | Winner |
|---|---|
| Size | Diamond Princess |
| Capacity | Diamond Princess |
| Modernity | Diamond Princess |
| Service | Celebrity Millennium |
| Spaciousness | Diamond Princess |
| Decks | Tie |
| Length | Celebrity Millennium |
| Fleet Power | Diamond Princess |
Bottom line: Diamond Princess leads 5–2 across our categories, strongest in Size. Choose Diamond Princess for overall superiority; pick Celebrity Millennium if Service matter more to you.
Which Ship Is Right for You?
Choose Diamond Princess if...
- You want the newer ship (built 2004, 4yr newer)
- Size matters to you (115,875 GT)
- More onboard variety (2,670 guests)
- More space per guest (43.4 GT/pax)
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Deep Dive
Upcoming Sailings
Upcoming Sailings on Celebrity Millennium
Leaves in 12 days
Leaves in 24 days12 Night Best Of Japan & South Korea
Celebrity • Celebrity Millennium
Oct 5, 2026 · 12 nights
Asia & Indian Ocean
$2,151/person$179/night
View Deal →
12 Night Best Of Japan Cruise
Celebrity • Celebrity Millennium
Oct 17, 2026 · 12 nights
Asia & Indian Ocean
$4,479/person$373/night
View Deal →Upcoming Sailings on Diamond Princess
Leaves in 29 days$1,296/person$144/night
View Deal →$1,699/person$121/night
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Frequently Asked Questions
How is the comparison score calculated?
We compute scores across 8 categories using real spec data: gross tonnage, passenger capacity, crew capacity, year built, length, deck count, space ratio, and fleet power. Each category awards one point to the winning ship.
What is the space ratio and why does it matter?
Space ratio is gross tonnage divided by passenger capacity. A higher number means more space per guest. Luxury lines typically score above 40; mass-market ships often fall in the 30-40 range.
What does the passenger-to-crew ratio mean?
Passengers per crew member. Lower is better, more staff per guest means better service. Luxury lines aim below 2:1; large mainstream ships may be 3-4:1.
Are the prices shown accurate?
Prices are sourced from Cruisebound and reflect real-time availability. They may change based on cabin type, date, and demand. Click through to see the latest fares.
Can I compare more than two ships?
Yes, up to four ships. Use the search tool on the compare hub page to add additional ships.
How current is the ship data?
Specifications come from our database of 380+ vessels, revalidated every 5 minutes via ISR. The "Updated" timestamp shows when records were last modified.
