October 1, 2026
9-Night Japan Cruise
Departing from Tokyo
From
$1,657
Price / day
$184
Diamond Princess|Queen Mary 2
Diamond Princess vs Queen Mary 2
Compare ship age, size, passenger capacity, itineraries and upcoming cruise prices.
Diamond Princess
Princess Cruises
Check prices on CruiseDirectVS
Newer Ship
Both ships are the same
Lower Price Per Day
Queen Mary 2
$162 / day
$2 less per day
More Spacious Ship
Queen Mary 2
57 GT per guest
Gross tonnage divided by passenger capacity
Diamond Princess vs Queen Mary 2: Quick Comparison
Diamond Princess and Queen Mary 2 both entered service in 2004. Queen Mary 2 is approximately 29% larger by gross tonnage at 149,215 GT. Diamond Princess also carries 50 more passengers. Diamond Princess has upcoming sailings in Japan, while Queen Mary 2 has sailings in Transatlantic. Based on the upcoming cruises currently displayed, Queen Mary 2 has the lower average starting price per day. The sailings shown cover different itineraries, so the price per day figures are not a like-for-like comparison. Cruise fares vary significantly by itinerary, departure date and cabin availability, so any price difference should be treated as a snapshot rather than a permanent gap.
Ship Comparison
| Spec | Diamond Princess | Queen Mary 2 |
|---|---|---|
| Year Built | 2004 | 2004 |
| Gross Tonnage | 115,906 GT | 149,215 GT |
| Passenger Capacity | 2,670 | 2,620 |
| Space per Passenger | 43.4 GT | 57 GT |
| Length | 290 m | 345.03 m |
| Decks | — | — |
| Cabins | — | — |
Key Differences: Diamond Princess vs Queen Mary 2
Age
Diamond Princess and Queen Mary 2 were both built in 2004.
Size
At 149,215 GT, Queen Mary 2 is approximately 29% larger by gross tonnage than Diamond Princess at 115,906 GT.
Passenger capacity
Diamond Princess carries up to 2,670 passengers compared with 2,620 aboard Queen Mary 2, a difference of 50 passengers.
Passenger space
Queen Mary 2 offers more space per passenger: 57 GT per guest, compared with 43.4 aboard Diamond Princess. A higher passenger space ratio generally means less crowding in public areas.
Itineraries
The upcoming sailings shown for Diamond Princess (Japan) and Queen Mary 2 (Transatlantic) currently cover different regions or departure ports.
Price
Among the upcoming sailings currently displayed, Queen Mary 2 has the lower average starting price per day at $162 per day.
Compare Ports of Call
Diamond Princess
Japan Explorer
- Departure Port
- Tokyo
- Region
- Japan
- Nights
- 9
- Round Trip
- Yes
- Day 1 · Oct 1, 2026Tokyo
- Day 2 · Oct 2, 2026Toba
- Day 3 · Oct 3, 2026Osaka
- Day 4 · Oct 4, 2026Kochi
- Day 5 · Oct 5, 2026Hiroshima
- Day 6 · Oct 6, 2026Kanmon Straits
- Day 7 · Oct 7, 2026Busan
- Day 8 · Oct 8, 2026Nagasaki
- Day 9 · Oct 9, 2026At Sea
- Day 10 · Oct 10, 2026Tokyo
Dates are estimates based on the published departure date.
Queen Mary 2
Westbound Transatlantic Crossing, 10 Nights
- Departure Port
- Hamburg
- Region
- Transatlantic
- Nights
- 10
- Round Trip
- No
- Day 1 · Sep 2, 2026Hamburg
- Day 2 · Sep 3, 2026At Sea
- Day 3 · Sep 4, 2026Zeebrugge
- Day 4 · Sep 5, 2026Southampton
- Day 5 · Sep 6, 2026At Sea
- Day 6 · Sep 7, 2026At Sea
- Day 7 · Sep 8, 2026At Sea
- Day 8 · Sep 9, 2026At Sea
- Day 9 · Sep 10, 2026At Sea
- Day 10 · Sep 11, 2026At Sea
- Day 11 · Sep 12, 2026New York
Dates are estimates based on the published departure date.
Upcoming Cruises & Prices
Diamond Princess
October 10, 2026
9-Night Japan Cruise
Departing from Tokyo
From
$1,296
Price / day
$144
Queen Mary 2
September 2, 2026
10-Night Transatlantic Cruise
Departing from Hamburg
From
$1,379
Price / day
$138
September 5, 2026
14-Night Transatlantic Cruise
Departing from Southampton
From
$2,599
Price / day
$186
Prices shown are starting fares and may change.
Which Ship Is Cheaper?
Diamond Princess
Average
$164 / day
VS
Queen Mary 2
Average
$162 / day
Queen Mary 2 has the lower price per day among the sailings shown
$162/day vs $164/day
About $2 less per day
This comparison is based on the upcoming sailings currently shown and may not represent like-for-like itineraries.
Cruise prices vary by departure date, itinerary, cabin type and availability.
Which Ship Should You Choose?
Choose Diamond Princess if…
- You do not mind sailing on a ship with a higher passenger capacity.
- You want to sail in Japan.
- Departing from Tokyo works for your plans.
Choose Queen Mary 2 if…
- You prefer the larger ship by gross tonnage.
- You prefer the ship with the lower passenger capacity.
- You value having more space per passenger (higher GT-per-guest ratio).
- You want to sail in Transatlantic.
- Departing from Hamburg and Southampton works for your plans.
- The lower price per day among the sailings currently shown matters to you.
Diamond Princess vs Queen Mary 2: Final Comparison Summary
Newer
Both ships are the same
Bigger
Queen Mary 2
149,215 GT
29% larger by gross tonnage
Lower Price Per Day
Queen Mary 2
$162 / day
About $2 less per day
- Both ships were built in 2004.
- Queen Mary 2 is 29% larger by gross tonnage.
- Diamond Princess carries 50 more passengers.
- Queen Mary 2 offers more space per passenger (57 GT per guest).
Frequently Asked Questions
Which is bigger, Diamond Princess or Queen Mary 2?
Queen Mary 2 is larger by gross tonnage. It measures approximately 149,215 GT compared with Diamond Princess at 115,906 GT.
Which ship carries more passengers?
Diamond Princess has a passenger capacity of approximately 2,670, compared with 2,620 for Queen Mary 2.
Which ship is more spacious, Diamond Princess or Queen Mary 2?
Queen Mary 2 has the higher passenger space ratio at 57 GT per passenger, versus 43.4 for Diamond Princess. The ratio is gross tonnage divided by passenger capacity; a higher number means more ship space per guest.
Which ship is cheaper, Diamond Princess or Queen Mary 2?
Among the upcoming sailings currently displayed, Queen Mary 2 has the lower average starting price per day at $162 per day versus $164 per day. Fares vary by itinerary, departure date, cabin type and availability.
Where does Diamond Princess sail?
The upcoming Diamond Princess sailings currently listed cover Japan, departing from Tokyo.
Where does Queen Mary 2 sail?
The upcoming Queen Mary 2 sailings currently listed cover Transatlantic, departing from Hamburg and Southampton.
Related Cruise Ship Comparisons
Explore Upcoming Cruises
Diamond Princess
Princess Cruises
Queen Mary 2
Cunard Line