When is the very best time to e-book a cruise?

The best time to book a cruise is when you’ve done your planning, picked a ship and found a cruise fare that fits your budget and offers good value. But that doesn’t stop vacationers from wondering if they’d find a cheaper price if they wait to book tomorrow, next week or next month.

I’d love to give you a magic date to circle in red on your calendar so you’d know for sure that was the best time to book a cruise. The truth is there’s no one best day, but knowing a few things about how cruise lines price cabins and when they tend to run promotions will help you identify high-value deals. When you see one, you’ll know it’s as good a time as any to book your next cruise vacation.

It used to be that lines like Royal Caribbean and Carnival Cruise Line would offer midweek sales on select cruises every Tuesday or Wednesday. These lines still offer the occasional flash sale, but they don’t always fall on the same day of the week.

Within a given cruise sale’s promotional period, I’ve seen cabin prices fluctuate daily and I’ve seen them stay the same for a week. It all depends on how many cabins a cruise line has allocated for a specific fare class and whether those rooms happen to sell out or not.

I could tell you that it’s cheaper to book a cruise at the beginning of a sale because availability is greatest. However, if the line sees a certain cabin category on a specific ship failing to sell as expected, it could drop rates halfway into the sale period.

The exception is any highly anticipated and publicized cruise, especially if it’s a one-off voyage or a short-season sailing, like a Great Lakes cruise. The maiden voyage and early inaugural season cruises of a new Royal Caribbean or Disney Cruise Line ship will sell like hotcakes on the day bookings first open; the most beloved theme cruises also book up quickly. World cruises have sold out within hours, even with price tags of $150,000 per couple.

If you have exclusive early access to book one of these cruises, due to being a past passenger or loyalty program member, take advantage and book your vacation the day the voyage goes on sale.

Related: The best credit cards for booking cruises

The best months to book a cruise are January through March, when nearly every cruise line launches some kind of wave season promotion, and November through December, when Black Friday and Cyber Monday sales often start well before Thanksgiving and end days or weeks after. You might find a cheap cruise deal or a fare packed with extras (like complimentary beverage packages, free kids fares or reduced deposits).

Are you guaranteed to find the cheapest, most freebie-laden pricing during these months? Of course not! Cruise lines sometimes inflate prices before a sale, so deals for 30% or 50% off may not be as good as you think. Or, the cruise line may offer its best fares in a one-off sale at another time of year.

Whether the winter months are the best time to book a cruise depends on which itinerary you’re hoping to book and how popular that sailing is that year. In a year when Alaska cruises are popular, the wave season promotions in January and February might not be especially good because the lines don’t need to discount to fill cabins. But if Alaska cruise bookings are soft, the wave season specials could be the best of the year as cruise lines pull out all the tricks to fill ships.

Related: How to book a cruise using points and miles

If you want to book a solo or family cabin on a Mediterranean cruise in July, you likely want to book much earlier than January for the most availability and the best prices. As I said earlier, great sales and deals can pop up year-round, including on other holidays such as Memorial Day and the Fourth of July.

Therefore, cruise lines often offer their best fares when bookings open to incentivize travelers to book early. Cruises open for bookings a year or more in advance. For example, as of August 2024, I can book a cruise on Norwegian Cruise Line through spring or fall of 2026, depending on the ship.

Related: 15 ways that cruising newbies waste money on their first cruise

Now, it might be the itinerary I’m looking at won’t be popular, and the cruise line will lower the fare closer to sailing. Or, the itinerary will sell well, and prices will only go up from the original price. I can’t know for sure, though I can guess that peak-season trips to popular destinations on a newer cruise ship are more likely to sell quickly. Christmas and New Year’s cruises, top suites and limited specialty cabins (such as solo and family cabins) also tend to sell out early.

If you ask me, the answer to “How far in advance should I book a cruise?” is as early as possible for the most popular cruises and cabin categories and at least nine months before most sailings.

In the cruise industry, a last-minute booking is considered any cruise purchased after final payment is due, generally 60 to 90 days before sailing. That means you have to pay the entire cruise fare at the time of booking rather than paying a deposit and the rest at a later date.

The final payment date is a day of reckoning for cruise salespeople. It’s the last date that undecided travelers can cancel without penalty. Once final payment is due, the cruise line has a more accurate picture of who is likely to sail (since once you pay, you’re likely to go, barring an emergency). At that point, the line can see if the ship is comfortably full (meaning it can hold prices steady or raise them because it’s not worried about filling the ship) or is too empty (meaning it better run some promotions to get more folks in cabins).

If it’s the latter, that’s when you get last-minute deals on cruise ships with unsold cabins. However, even if that last-minute cruise is cheap, the 11th-hour airfare or precruise hotel booking could eat into your savings.

For the real procrastinators out there, the absolute last day you can book a cruise before its departure has changed over the years. Currently, a cruise line could accept a booking mere hours before sailing, as long as boarding is still open and the ship’s manifest (the list of passengers and crew members on board) has not been submitted to the authorities.

In actuality, most cruise lines will sell available cabins through the day before sailing but limit or deny same-day bookings. Depending on the line, you might only be able to book cruises within a day or two of departure directly with the cruise line’s reservations department.

Booking a cruise just days before sailing should only be attempted by travelers within an easy drive of the cruise port. You should also make sure that you have time to get any necessary documentation, as well as make related travel plans.

Don’t forget to watch for value-added promotions as well. For example, Norwegian’s Free at Sea promotion currently includes six booking perks (a free beverage package, a shore excursion credit, specialty dining, Wi-Fi, extra guests and buy-one-get-one-free airfare).

If that sounds like too much math homework, I recommend that you call a travel agent. A cruise-knowledgeable travel adviser can help you plan your trip and determine if the current pricing is good or if you should hold out for a deal.