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Ship comparison

Ruby Princess vs Sun Princess

Side-by-side cruise ship comparison. Sun Princess wins 6 of 7 scored categories.

At a glance

Quick Compare

Category
Ruby Princess
Sun Princess
Size
113,561 GT
175,500 GT
Passengers
3,080
4,300
Year built
2008
2024
Crew ratio
2.8 guests per crew
2.9 guests per crew
Space ratio
36.9 GT per guest
40.8 GT per guest
Decks
No data
No data
Length
290 m
345 m
From price
$1,319 pp
$1,104 pp

The verdict

Comparison Verdict

Sun Princess is the significantly larger vessel at 175,500 GT, 55% more than Ruby Princess's 113,561 GT. Sun Princess offers more personal space with a space ratio of 40.8 GT per passenger versus 36.9. Built in 2024, Sun Princess is 16 years newer, an advantage for travelers seeking modern amenities and design.

CategoryWinner
SizeSun Princess
CapacitySun Princess
ModernitySun Princess
ServiceRuby Princess
SpaciousnessSun Princess
DecksNo data
LengthSun Princess
Fleet PowerSun Princess

Bottom line: Sun Princess leads 6–1 across our categories, strongest in Size. Choose Sun Princess for overall superiority; pick Ruby Princess if Service matter more to you.

Decide

Which Ship Is Right for You?

Choose Ruby Princess if

  • More crew per guest (2.8 guests per crew)
  • Lower fares per night (from $82 per person per night)
Book Ruby Princess

Choose Sun Princess if

  • You want the newer ship (built 2024, 16 years newer)
  • Size matters to you (175,500 GT)
  • More onboard variety (4,300 guests)
  • More space per guest (40.8 GT per guest)
Book Sun Princess

Prices

See Current Prices

You have compared the ships. Now see what they cost.

Ruby Princess

from $1,319 per person

Book Ruby Princess

Sun Princess

from $1,104 per person

Book Sun Princess
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Fares

Sailing Prices

DetailRuby PrincessSun Princess
Cheapest$1,319 pp$1,104 pp
Per night$82 pp$158 pp
DepartingNov 29Nov 15
Duration16 nights7 nights
View sailingView sailing

Prices from Cruisebound, per person, for the sailing shown.

Go deeper

Deep Dive

Sailings

Upcoming Sailings

Upcoming Sailings on Ruby Princess

Ruby Princess sailing from San Francisco, California

5 Night U. S. Pacific Coast Cruise

Princess • Ruby Princess

Nov 24, 2026 · 5 nights

Mexico

$2,291/person$458/night
View Deal
Ruby Princess sailing from San Francisco, California

16 Night Hawaii Cruise

Princess • Ruby Princess

Nov 29, 2026 · 16 nights

Mexico

$1,319/person$82/night
View Deal
Ruby Princess sailing from San Francisco, California

16 Night Hawaii Cruise

Princess • Ruby Princess

Dec 26, 2026 · 16 nights

Hawaii

$3,092/person$193/night
View Deal
Powered by Cruisebound

Upcoming Sailings on Sun Princess

Sun Princess sailing from Barcelona, Spain

15 Night Europe Cruise

Princess • Sun Princess

Oct 31, 2026 · 15 nights

Iberian Peninsula

$1,310/person$87/night
View Deal
Sun Princess sailing from Fort Lauderdale (Port Everglades), Florida

7 Night Caribbean - Western Cruise

Princess • Sun Princess

Nov 15, 2026 · 7 nights

Mexico

$1,104/person$158/night
View Deal
Sun Princess sailing from Fort Lauderdale (Port Everglades), Florida

7 Night Caribbean - Eastern Cruise

Princess • Sun Princess

Nov 22, 2026 · 7 nights

Caribbean

$1,385/person$198/night
View Deal
Powered by Cruisebound

Hotels & Accommodations Near Port of San Francisco

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FAQ

Frequently Asked Questions

How is the comparison score calculated?

We score 8 categories from spec data: size, capacity, modernity, service, spaciousness, decks, length and fleet power. Each category awards one point to the winning ship. A category where either ship has no data is marked No data and left out of the score.

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, and mass-market ships often fall between 30 and 40.

What does the passenger-to-crew ratio mean?

It is the number of guests for each crew member, shown as "3.0 guests per crew". Lower is better: more staff per guest usually means more attentive service. Luxury lines aim for fewer than 2 guests per crew, and large mainstream ships often carry 3 to 4.

Are the prices shown accurate?

Prices come from Cruisebound and are per person for the sailing shown. They change with cabin type, date and demand, so open the sailing to see the current fare.

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+ ships, and this page refreshes daily. An "Updated" date appears at the top when either ship's record changed in the last 30 days.