Plan
The single supplement, measured.
What one guest pays above the two-sharing rate, across every cabin we have priced both ways.
15,591 cabins priced both ways · updated Oct 5, 2026
What it is
A cruise fare is quoted per person on the assumption two people share the cabin. One guest in that same cabin does not pay half of it — they pay a higher rate, because the line is selling a cabin, not a bed. The gap between the two is the single supplement.
We price every sailing twice, once for one guest and once for two, so the supplement here is measured for that cabin on that sailing rather than estimated. Across 15,591 cabins where we hold both figures, the middle one is 73%.
It is not a constant, and that is the point
The common shorthand is that a solo traveler pays double. The measured range runs from 0% to 362%. 3 of those cabins carry no supplement at all — the solo fare is the same as the per-person double rate. At the other end, 932 sit at 95% or above, which is the "pay double" case people expect.
| Cabin | Lowest | Lower quarter | Middle | Upper quarter | Highest | Priced |
|---|---|---|---|---|---|---|
| Inside | 0% | 51% | 59% | 66% | 293% | 2,915 |
| Oceanview | 12% | 54% | 62% | 70% | 310% | 2,840 |
| Balcony | 26% | 61% | 66% | 74% | 362% | 2,904 |
| Club Balcony Suite | 48% | 76% | 83% | 89% | 162% | 2,792 |
| Suite | 65% | 82% | 88% | 93% | 169% | 2,106 |
| The Haven | 70% | 89% | 93% | 95% | 174% | 2,034 |
Quarters rather than an average: a handful of long repositioning sailings would drag a mean somewhere no reader is ever quoted. The middle column is the one to plan against. The Highest column is worth reading with care — every supplement above 200% in the whole capture belongs to one departure, Norwegian Jewel on Jul 2, 2028, where the solo fare runs close to five times the per-person double rate across three cabin types. One sailing priced unusually is not a range you should plan against.
It moves inside a single sailing too
The widest spread we hold is on 9-Day Baltic From Helsinki To Copenhagen: Germany, Sweden & Poland, Norwegian Jewel on Jul 2, 2028, where the supplement runs from 162% in one cabin to 362% in another on the same ship on the same night. Choosing the cabin is choosing the supplement.
Studios have none, because there is nothing to compare to
NCL's Studio is built and sold for one person. It has no double-occupancy fare, so there is no supplement to compute — not a waived one, not a zero one, none. We track 1,832 priced Studios across 12 ships.
This is why a Studio should be compared against the cheapest other cabin a single traveler could take on the same sailing, never against a per-person double rate. Every voyage page does that comparison for you. Sailings with Studios, priced →
How to use this
- Check the supplement on the sailing you want, not a rule of thumb — the column is on every sailing page.
- If you are sailing alone, look at Studios first; they sidestep the question entirely.
- Compare cabins within one sailing before comparing sailings. The spread inside a ship is often wider than the spread between ships.
- Prices move. Every figure here carries the date it was captured, and nothing on this site is a quote.