You've finally done it.
You picked the cruise. You found the perfect itinerary. You're ready to hit Book...
...and suddenly the price almost doubles.
Welcome to the wonderful, frustrating world of the single supplement.
If you've never cruised alone before, it genuinely looks like a mistake. It isn't. The cruise line is charging you because you're only filling half the cabin.
It doesn't seem fair. Sometimes it isn't.
But there are reasons for it — and more importantly, there are ways around it.
The good news is that solo cruising has never been more popular. Cruise lines are adding studio cabins, hosting solo meetups, building solo lounges, and running promotions that reduce or occasionally eliminate the supplement entirely.
The even better news? There's another option almost nobody talks about.
Let's start with the expensive part.
What Is the Single Supplement?
Cruise fares are almost always built around double occupancy — the cruise line expects two people in one cabin.
If only one person books it, the line loses the second passenger's fare and everything that passenger would have spent onboard: drinks, specialty dining, casino, excursions, Wi-Fi, spa, photos.
To offset that, they charge the single supplement. Depending on the line and the sailing, it typically runs 125% to 200% of the advertised per-person fare.
Here's how that feels in practice.
You find a cruise advertised at $999 per person. Sounds great — until you select 1 Guest, and the total becomes $1,799. Or $1,998.
Nothing changed except the number of people in the cabin.
That empty pillow just got very expensive.
Are Cruise Lines Just Being Greedy?
Honestly? Not really.
It's easy to blame the cruise lines, but the economics make more sense than most people realize. A cabin takes up the same fixed space on the ship whether one person sleeps in it or two. It still has to be cleaned, serviced, cooled, maintained, and staffed.
More importantly, cruise lines make a significant share of their profit after you board. A second passenger buys drinks, excursions, spa treatments, photos, Wi-Fi, specialty dining. If that passenger doesn't exist, neither does that revenue.
Does the supplement still hurt? Absolutely.
Is it simply corporate greed? Usually not — and knowing that is useful, because it tells you where the real leverage is. You're not going to argue a cruise line out of its business model. You're going to find the sailings where the math already works in your favor.
Studio Cabins: Built for Solo Travelers
Cruise lines have finally worked out something important.
Solo cruising isn't unusual anymore. It's booming.
Norwegian led the industry, launching the first purpose-built studio cabins on Norwegian Epic in 2010 — small inside cabins designed and priced for one guest, clustered around a private Studio Lounge with complimentary coffee, snacks, and daily solo get-togethers. It worked so well that in 2024 Norwegian expanded solo staterooms across all 19 ships in its fleet, adding Solo Inside, Solo Oceanview, and Solo Balcony categories.
One important catch, though: the Studio Lounge isn't fleetwide. It exists on about ten ships — Epic, Bliss, Encore, Escape, Getaway, Breakaway, Prima, Viva, Aqua and Pride of America. If the social side is what you're after, the lounge is the entire point, so check before you book.
Virgin Voyages may be the strongest solo product at sea right now, and it's the one people forget. Their Solo Insider and Solo Sea View cabins are priced for one guest with no supplement at all, and they periodically run a Reduced Single Supplement offer that cuts the second fare by up to 70% on Sea Terrace cabins. The ships are adults-only, the dining is unassigned, and they run dedicated Solo Sailor Mixers. If you're sailing alone and don't need a kids' club, look here first.
Royal Caribbean has solo cabins on roughly 13 ships, including all Quantum-class vessels, plus Harmony and Utopia of the Seas.
Celebrity, Holland America, MSC, Cunard and P&O all offer some solo inventory on selected ships.
And now the part nobody tells you:
Jay's Tip Carnival and Disney don't have solo cabins. At all. On any ship. And Royal's two newest, most-hyped ships — Icon of the Seas and Star of the Seas — don't have them either. If you're sailing solo and you've fallen in love with an Icon itinerary, know going in that you're paying the full supplement. Check the cabin categories before you fall in love with the ship.
The other catch with studio cabins is simple supply. Most ships that have them have very few — often between 10 and 30. Norwegian Epic is the outlier with well over 100.
They sell out first. Almost always.
Jay's Tip If you want a true solo cabin, book early. Not "a few months out" early — as early as the itinerary opens. There may only be a couple of dozen on the entire ship, and they are routinely the first staterooms to disappear.
Can You Actually Avoid the Supplement?
Sometimes, yes.
Cruise lines regularly run promotions that reduce or waive the single supplement — usually on quieter sailings, off-peak dates, or as a departure date approaches with cabins still unsold. These deals change constantly and are rarely advertised loudly, so they reward people who are watching.
If you're booking on price, flexibility is your superpower. A Tuesday departure in September will often cost dramatically less than a holiday sailing in July, and the supplement is one of the first things a line will discount to fill a ship.
(Cruise line policies change often. Everything here reflects current offerings — always confirm cabin categories and supplement terms at the time you book.)
Cruising Solo Doesn't Mean Cruising Alone
One of the biggest misconceptions about solo cruising has nothing to do with money.
It's loneliness.
People picture seven days of eating dinner alone while everyone around them seems to have arrived with lifelong friends.
The reality is close to the opposite. Solo cruisers are among the easiest people to meet onboard — because a group of six will happily absorb one person into their dinner plans, their trivia team, their excursion. They're far less likely to absorb another couple.
Cruise lines know this, which is why most now run solo traveler meetups, solo-hosted dinners, studio lounges, Meet & Mingles, and group excursions. Norwegian's Studio Lounge is the best-known example, but the underlying insight is shared across the industry: solo travelers usually aren't looking to be alone. They're just traveling independently.
Jay's Tip The first solo meetup feels intimidating. Go anyway. Every single person in that room showed up alone. Nobody expects you to know anybody. That is literally why the event exists.
For much more on this, we wrote a whole guide on how to meet people on a cruise — what actually works onboard, what never does, and the window most cruisers miss entirely.
The Option Almost Nobody Talks About
Now the obvious solution that somehow never comes up.
Share the cabin.
Think about it for a second. If the entire reason you're paying double is that there's an empty bed in your room... why not fill it?
It sounds radical. It isn't. People have shared hotel rooms, ski condos, vacation rentals, and hostels forever. A cruise cabin is no different — and unlike a hostel, you get to choose exactly who's in it.
The challenge was never the idea. It was finding someone compatible.
How CabinShare Works
When members kept asking us how to dodge the single supplement, we noticed they were all solving the same problem by hand: posting in Facebook groups, searching Cruise Critic, scrolling Reddit, and hoping another solo traveler happened to be sailing on the same ship on the same date.
Sometimes it worked. Usually it didn't.
So we built CabinShare.
Rather than searching the internet for weeks, you list the sailing you're interested in, describe the kind of cabin mate you're looking for, and connect with other solo cruisers — before booking, or before sailing.
Some people just want to split the cost. Some are looking for an actual travel companion. And some already have an oversized suite with a berth going empty and would rather share it than waste it.
The point isn't only the money. It's making solo cruising feel a little less solo.
Is Sharing a Cabin With a Stranger Safe?
That's the first question you should be asking, and it deserves a real answer rather than a reassuring one.
Sharing a cabin isn't for everyone, and that's completely fine. A cabin is a small, private space, and seven days is a long time. If the idea makes you uncomfortable, book the studio, take the supplement, and enjoy your cruise. Nobody should ever feel pressured into it.
But if you're open to it, the entire design of CabinShare is built around one principle: you should know a great deal about someone long before you agree to share a room with them.
That means talking properly first, not just exchanging two messages and a booking reference. Ask the awkward questions — about sleep schedules, drinking, smoking, guests, what time they plan to get up. Video call before you commit; five minutes of seeing and hearing someone tells you more than fifty messages. Read their profile and their history on the platform. Look for ID verification. Take as long as you need, and if anything feels off at any point, walk away — there will be another sailing and another cabin mate.
The people who have great experiences with cabin sharing are, without exception, the ones who did the vetting slowly and asked the uncomfortable questions early.
Jay's Tip Ask about sleep and alcohol before you ask about splitting the cost. A night owl and an early riser in a 150-square-foot windowless room is a genuinely miserable week, and no amount of savings fixes it.
The Best Solo Cruises Start Before Embarkation
One thing Matthew and I learned after years of cruising: the people who have the best vacations rarely meet everyone on Day Three.
They start connecting before they ever board.
That's exactly why CruiseHuddle exists. Whether you're looking for fellow solo travelers, trivia teammates, excursion partners, dinner companions, or someone to split a cabin with, the best introductions almost always happen weeks before the ship leaves port.
Ready to Cruise Solo Without Paying Double?
Solo cruising is one of the most rewarding ways to travel. You set your own schedule. You choose your own adventures. You meet people you'd never have spoken to if you'd arrived with someone.
And with a little planning, you don't have to pay twice as much — or spend the week alone.
Find your sailing and see who's already going. Read ship reviews from people who've actually been onboard. Or try CabinShare, if you'd rather split the cost than pay for an empty pillow.
Sometimes the best travel companion is just someone you haven't met yet.