Spring break feels like a long way off, but March flights are already on sale, and a few of you have asked me when to actually book. I went looking for an answer and found two good sources that point in slightly different directions. The short version is that the data says to wait for a sweet spot, and I think the smarter move is to treat that sweet spot as a rough guide rather than a deadline.

Everything below comes from public sources I read between October 23 and October 31, 2026. None of it is a live quote for your airport, so please think of these as examples that show how the math works.

What Google’s data says

On October 5, Google published an analysis of five years of Google Flights data. For March and April trips, it found that the lowest average fares show up about 50 days before departure, and that the cheap stretch runs from 64 to 29 days out. That’s a full week earlier than last year’s window.

Here’s what that looks like on a calendar. Say your family leaves Saturday, March 13. Fifty days out is January 22, and the whole low-price window runs from about January 8 to February 12. If your spring break is a week earlier or later, slide those dates to match.

A March 13 departure, counted back
Google Flights data analysis · published October 5, 2026 · day counts are my calendar math
64 days out (window opens)January 8
50 days out (lowest average fare)January 22
29 days out (window closes)February 12

Google also found that leaving on a Monday and coming home on a Tuesday or Wednesday saves about 14% compared with weekend flights. I’ll come back to that, because I think it matters more than the booking date.

Why I wouldn’t just wait for January

Thrifty Traveler’s October 8 spring break guide takes the opposite view of that headline number, and I’m mostly on their side. Their argument is that the lowest fares go first. Book early and you beat everyone else to them, and, in their words, once those fares are gone the price almost always goes up. Waiting until mid-January means betting that the fare you want is still there.

Google’s 50-day figure is an average across a huge number of trips. It isn’t a promise about your route, your dates, or your airline, and a popular beach destination can sell its cheap seats long before the average says it should.

The fares people are seeing right now make the point. On October 23, FlightFare searched KAYAK for a March 13 departure for one adult. New York to Orlando showed up at $509 to $519 in every March week it checked. New York to Cancún, on the other hand, jumped from $429 in an ordinary week to $612 for the week of March 13. That’s $183 more for the same route, simply because it’s spring break week.

One adult versus four, same searches
FlightFare / KAYAK sample · October 23, 2026 · four-seat totals are my multiplication
New York to Orlando, March 13 week$509 – $519
Four tickets at those prices$2,036 – $2,076
New York to Cancún, an ordinary March week$429
New York to Cancún, week of March 13$612
Four tickets, spring break premium alone$183 × 4 = $732

A couple of cautions about those numbers. They’re single-day searches, not quotes, and most of the cheapest fares were basic economy. Basic economy usually can’t be changed, so before I got excited about a fare like that I’d read the bag and change rules carefully. A real four-seat search can also price differently from four times a one-seat search.

Move the day before you move the date

The cheapest thing you can usually change is the day you fly. Google’s 14% savings for a Monday departure and a Tuesday or Wednesday return is a general finding across five years of U.S. departures, so I wouldn’t knock exactly 14% off any fare I’m looking at. But it tells me where to look first when a spring break fare feels too high. Thrifty Traveler says the same thing in plainer words: flying out the Friday before spring break and back on Sunday is the pattern most likely to cost the most, while a Monday departure usually costs less.

If your school calendar gives you any flexibility at all, price a Monday departure against a Friday one before you decide anything else.

What I’d actually do

01
Set price alerts today. It costs nothing, and it tells you whether the fare you’re eyeing is drifting up or down. Google Flights alerts work well for this.
02
Book a flexible fare if you find one you like. Thrifty Traveler says a main cabin ticket usually lets you change for a credit, which means a price drop later can still work in your favor. If you see a main cabin fare you’d be happy with, I’d buy it and keep watching.
03
If nothing works yet, plan to buy between early January and mid-February. For a mid-March trip, that’s the stretch where Google’s data says fares tend to be lowest. I’d treat it as the outer edge of my plan, not the target.
04
Price a different day of the week. It’s the lever with the most room to move, and it doesn’t depend on guessing when the market will dip.

Place your date on the booking curve.

Type the fare you’re seeing, and the calculator shows whether you’re early, on time, or running late. It isn’t a live fare search.

Find your booking window →

Build the rest of the trip in the budget calculator

Quick answers

When is the cheapest time to book spring break flights?

Google’s October 5 analysis of five years of Google Flights data puts the lowest average fare for March and April trips about 50 days before departure, with the cheap stretch running from 64 to 29 days out. For a March 13 trip, that’s January 8 through February 12.

Is it risky to wait for that 50-day mark?

It can be. Google’s number is an average, not a promise for your route, and Thrifty Traveler points out that the lowest fares go first and the price almost always rises once they’re gone. My plan is to set alerts now, buy a flexible fare if I see one I like, and use the January to mid-February stretch as a backstop.

Does the day of the week matter?

Yes. Google found that leaving on a Monday and returning on a Tuesday or Wednesday saves about 14% compared with weekend flights.

I’ll talk to you next week,
Chris

Related reading

Sources

  1. Google: Wheels up, trends and tips for 2026 holiday travel, October 5, 2026. Spring break and holiday analysis from five years of Google Flights data. Lowest March and April fares about 50 days before departure, cheap range 64 to 29 days, a week earlier than last year. Monday departure with a Tuesday or Wednesday return saves about 14% versus weekend trips.
  2. Thrifty Traveler: how to find cheap spring break flights, October 8, 2026. Book early, book flexible fares (main cabin or miles), shift travel days.
  3. FlightFare: Spring break flights, what they cost and when to book. KAYAK sample for a March 13 departure, one adult, checked October 23, 2026. New York to Orlando $509 to $519 in every March week checked. New York to Cancún $429 in an ordinary week and $612 for the week of March 13.
  4. Vacation Math When to Book calculator. Places the fare you type on a booking curve. It does not search live prices.

Written November 1, 2026 for the Issue #22 email that goes out November 3, 2026. Dollar figures are the ones printed in the sources above, or my multiplication of them, and the day counts are calendar math. FlightFare’s fares are single-day samples for one adult, not quotes, and many were basic economy. Bags and seat fees are extra. Not affiliated with Google, KAYAK, FlightFare, Thrifty Traveler, or any airline. No affiliate links.