Spots going fastAllure of the Seas vs Spectrum of the Seas
Side-by-side cruise ship comparison · Updated April 2026
Allure of the Seas is the significantly larger vessel at 225,282 GT — 33% more than Spectrum of the Seas's 169,379 GT. Spectrum of the Seas offers more personal space with a space ratio of 39.9 GT per passenger versus 33.2. Built in 2019, Spectrum of the Seas is 9 years newer — an advantage for travellers seeking modern amenities and design.
Score: 4 – 3
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Category
Allure of the Seas
Spectrum of the Seas
Size
225,282 GT
169,379 GT
Passengers
6,780
4,246
Year Built
2010
2019
Crew Ratio
1:3.2
1:2.7
Space Ratio
33.2
39.9
Decks
—
—
Length
362m
347m
From Price
$764.91/pp
$890/pp
Comparison Verdict
Allure of the Seas is the significantly larger vessel at 225,282 GT — 33% more than Spectrum of the Seas's 169,379 GT. Spectrum of the Seas offers more personal space with a space ratio of 39.9 GT per passenger versus 33.2. Built in 2019, Spectrum of the Seas is 9 years newer — an advantage for travellers seeking modern amenities and design.
| Category | Winner |
|---|---|
| Size | Allure of the Seas |
| Capacity | Allure of the Seas |
| Modernity | Spectrum of the Seas |
| Service | Spectrum of the Seas |
| Spaciousness | Spectrum of the Seas |
| Decks | Tie |
| Length | Allure of the Seas |
| Fleet Power | Allure of the Seas |
Bottom line: Allure of the Seas leads 4–3 across our categories — strongest in Size. Choose Allure of the Seas for overall superiority; pick Spectrum of the Seas if its strengths matter more to you.
Which Ship Is Right for You?
Choose Allure of the Seas if...
- Size matters to you (225,282 GT)
- More onboard variety (6,780 guests)
- Save $125.09/person on sailings
Choose Spectrum of the Seas if...
- You want the newer ship (built 2019, 9yr newer)
- Better service ratio (2.7:1 crew ratio)
- More space per guest (39.9 GT/pax)
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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.
