Wave season is the cruise industry’s big booking sale, traditionally January through March. The deals are real, but most of them aren’t a lower price on the cabin. They’re extras: a smaller deposit, free fares for a third and fourth guest, onboard credit, a discounted drinks package. Whether that’s a good deal depends entirely on whether you’d have paid for those things anyway.

I’ve been cruising since I was seven, and wave season is when I get the most “should I book now?” questions. The new offers start appearing in December, so here’s what’s actually in them, and how I’d read them before you do.

When it runs, and what you’re booking

The name says January to March, but the window keeps stretching. Lines now start teasing offers in December and some run well past March. MSC’s 2026 promotion, for example, ran from December 8, 2025 to April 7, 2026.

The part people misunderstand: you book during wave season, but you don’t sail during it. The offers usually cover sailings across the coming year, and sometimes into the year after. So a January booking is often for a summer Alaska trip or next winter’s Caribbean.

What the deals actually include

Strip away the banners and almost every offer is built from the same handful of pieces:

• A percentage off, often on the second guest. Celebrity’s 2026 sale advertised up to 75% off the second guest in a stateroom. Read “up to” and “second guest” carefully before you do the math.
• Free third and fourth guests. Princess, Royal Caribbean and Celebrity all offered versions of this in 2026, usually on select sailings. Great for families sharing one cabin, useless for a couple.
• Reduced deposits. Princess offered 50% off deposits in 2026. Lower upfront, same total.
• Onboard credit. Norwegian paired 50% off with up to $1,000 in onboard credit per cabin. Credit only works on certain onboard purchases, so it’s only worth something if you’d spend it.
• Discounted add-ons. Royal Caribbean’s 2026 sale took up to 40% off drinks packages, internet and excursions.

Other offers you’ll see include kids sail free, included gratuities, and airfare from certain U.S. cities. The mix changes every year and every line, and many have hard booking deadlines. Princess’s 2026 sale ended February 16; Norwegian’s ended January 20.

How I’d read an offer

Start with the non-sale price. A percentage off a number you’ve never seen tells you nothing. Wave season is a busy, competitive time for offers, but it isn’t automatically the lowest price of the year. Dates, ship, itinerary and cabin all move the price more than the season does.

Then price the week you’d actually have. If you were going to buy a drinks package anyway, a discounted one is real money. If you don’t drink, it’s nothing. Same with onboard credit and wifi. Two offers with the same headline can be very different deals for different people.

And remember the ship still matters more than the promotion. A great deal on the wrong boat is still a week somewhere you don’t belong.

The deposit fine print

Many of the cheapest fares come with a non-refundable deposit. On Royal Caribbean, for example, if you cancel a non-refundable booking before final payment, you lose the deposit. You can usually move it to another sailing instead, but there’s a change fee, typically $100 per person. A refundable fare costs more but gives you the deposit back if you cancel before final payment.

Because these bookings are often a year out, I’d also look at travel insurance before you put money down. A lot can change in a year.

What most people miss

The cabin. Everyone’s watching the percentage, and meanwhile the best cabins on the most popular sailings are being booked. The promoted sailings can sell out, which is why it usually pays to book early in the season rather than waiting for March.

The cheapest cabin in the right place beats an expensive one in the wrong one. If it’s your first cruise, I’d still suggest a balcony, as close to midship as you can get. The middle of the ship moves less than the front.

One last thing: if the fare drops after you book, it’s sometimes possible to ask for the difference back or for onboard credit. It depends on the line and the fare, but it’s worth checking.

Sources: TravelPulse — Wave Season 2026 deals; Cruise Critic — The best 2026 wave season cruise deals; NEA Member Benefits — Wave season promises cruise bargains and bonuses; Cruise Hive — What is wave season; Royal Caribbean Blog — Refundable vs. non-refundable deposits. Offers listed are from the 2026 wave season; the 2027 offers will differ, so check current terms when you book.

Want help reading the new offers against the ship and cabin that actually fit you? See how I plan cruises. Book a free 20-minute call.