Royal Caribbean has a 25-night sailing leaving Los Angeles this fall that crosses nearly the entire Pacific.
It goes from California all the way to Brisbane, Australia.
The ship is Quantum of the Seas, and it departs September 26, 2026.
By the time it ties up in Brisbane on October 22, guests will have spent more than three weeks at sea, with stops in Hawaii and French Polynesia along the way.
It’s one of the longest single itineraries Royal Caribbean sells, and it’s still open for booking.
Here’s the route, why a cruise like this almost never comes up, and what it means if you’re tempted to grab a cabin.
Where Quantum Of The Seas Actually Stops
The headline is the distance, but the stops are what make this one interesting.
Quantum leaves Los Angeles on a Saturday afternoon and heads first to Catalina Island, just off the Southern California coast.
Photo by Daniel Ponomarev on Pexels
Then the ocean takes over.
Five straight sea days follow before the ship reaches Kailua Kona on the Big Island of Hawaii.
From there it sails up to Honolulu for an overnight stay, which is rare on a repositioning route and gives guests a real chance to see Oahu instead of a rushed port morning.
After Hawaii comes another five-day ocean stretch, then the part most cruisers circle on the map: French Polynesia.
The ship calls at Raiatea, then Papeete in Tahiti, then Moorea on three consecutive days.
Those are the kind of South Pacific islands that usually require a dedicated, expensive specialty cruise to reach.
| Stop | Where | Notable |
|---|---|---|
| Catalina Island | California | Quick first call, tendered |
| Kailua Kona | Hawaii | Big Island, tendered |
| Honolulu | Hawaii | Overnight stay |
| Raiatea | French Polynesia | Sacred Marae Taputapuatea nearby |
| Papeete | Tahiti | Late departure, near midnight |
| Moorea | French Polynesia | Lagoon and mountain views |
| Brisbane | Australia | Final disembarkation |
After Moorea, the longest stretch begins: eight days at sea before Brisbane.
Somewhere in there, around the third week, the ship crosses the International Date Line.
That adds up to roughly 18 sea days across the whole sailing.
Heads up: A route this sea-day heavy lives or dies on how you feel about days with no port. If you love a sea day, this is paradise. If you get restless after two in a row, eight back-to-back is worth thinking hard about before you book.
Why A Sailing Like This Is So Rare
Most Royal Caribbean cruises run about seven nights. The longer ones usually top out around two weeks.
A 25-night itinerary sits well outside that, and the reason comes down to what kind of sailing this actually is.
It’s a repositioning cruise.
That means the ship isn’t running a loop and coming home. It’s relocating from one part of the world to another, and selling tickets on the one-way trip.
In this case, Quantum spent the 2025–26 winter season homeported in Los Angeles running short cruises to Baja Mexico.
Now it’s moving to Brisbane for its fourth season based in Queensland.
Rather than sail across the Pacific empty, Royal Caribbean fills the ship and turns the crossing into a product.
These moves only happen a couple of times a year per ship, which is exactly why repositioning sailings tend to hit unusual ports and pile on the sea days.
You cannot find this route on a recurring schedule. When the ship has finished crossing, the itinerary is gone.
That scarcity is most of the appeal.
What This Means If You’re Tempted To Book
This is not a first-timer’s cruise, and I’d say that plainly to anyone asking.
Three-plus weeks at sea, long ocean stretches, and a one-way ticket make it a better fit for experienced cruisers who already know they enjoy the rhythm of life onboard.
Pricing has floated around $2,200 per person at the low end, based on listings earlier this year, though fares on a sailing like this move with demand and cabin availability. Treat any number you see as a starting point and check the current rate for your dates.
The bigger budget line isn’t the fare.
It’s the one-way logistics. You’re flying home from Australia, not back to LA, and a long-haul flight from Brisbane is its own cost that’s easy to forget when you’re staring at the cruise price.
That’s the sort of expense that catches people off guard, and it’s the same category of thing we get into in our breakdown of the costs cruise lines don’t put front and center.
The other math worth running is the drinks and onboard spend.
On a 25-night sailing with 18 sea days, a beverage package decision compounds in a way it never does on a 7-night Caribbean run. We walk through how to actually run those numbers in our look at whether a drink package pays off.
If the sea days don’t scare you and the South Pacific stops are the draw, this is a genuinely uncommon way to see them on a mainstream ship at mainstream-ish prices.
The Bigger Australia Picture
The crossing is the flashy part, but it’s really the front door to a much larger Royal Caribbean push Down Under.
Quantum is one of two Quantum-class ships the line is running in the region for the 2026–27 season.
Once Quantum reaches Brisbane, it settles into 28 cruises of three to eight nights, sailing to South Pacific spots like Noumea and Port Vila plus Queensland ports including Airlie Beach and Cairns.
Its fleetmate Anthem of the Seas runs the season out of Sydney, with 21 sailings ranging from three to eleven nights across Tasmania, New Zealand, and the South Pacific.
Photo by Bernardo Mestre on Pexels
Royal Caribbean’s managing director for Australia and New Zealand, Gavin Smith, framed the season around shorter, more frequent getaways and weekend departures aimed at the local market.
So the 25-night crossing is the headline, but the strategy underneath it is two big ships and a packed regional calendar.
For most cruisers, the Brisbane and Sydney sailings will be the realistic option.
For a small group of people with the time, the budget, and the appetite for sea days, the September crossing is the rare one to watch.
Would you book a 25-night Pacific crossing if the sea days came with Hawaii and Tahiti, or is three weeks at sea more than you’d ever want in one trip?