The Best Day to Book a Flight to Hawaii in 2026, According to New Expedia Data

Before you scroll, I sometimes share links for Hawaii spots I genuinely recommend. No extra cost to you, it just supports the site. Read our affiliate disclosure for info.

If you’ve been waiting for the “perfect” moment to book your Hawaii flight, new data says that moment is a Friday.

Expedia just released its 2026 Air Hacks report, and it flips some long-held booking advice on its head.

After analyzing millions of flight data points, Expedia found that Friday is the best overall day to book flights. For U.S. domestic routes, including most mainland-to-Hawaii flights, it’s still worth comparing Friday and Saturday before buying.

For Hawaii travelers, that’s worth paying attention to.

This doesn’t mean you need to panic or rebook anything. But if you haven’t locked in your flights yet, this is practical, money-saving information you can use right now.

What This Means for Your Hawaii Trip

The short version: check fares on Friday or Saturday, fly on a Tuesday if you can, and skip summer if your budget is a priority.

That’s the clearest takeaway when you combine Expedia’s new 2026 Air Hacks report with what Hawaii flight data actually shows.

Expedia’s national findings are useful, but Hawaii has its own pricing patterns that don’t always follow the national average.

This article covers both so you can make a smarter decision for your specific trip.

Should you change how you’re booking right now?

If you haven’t booked yet, yes. This is easy to act on.

Pull up your flights on Friday or Saturday and compare what you see against other days.

It only takes a few minutes and could save you a meaningful chunk of your trip budget.

If you’re already researching, bookmark this and check again Friday or Saturday. Simple as that.

What if you already booked your flight?

No need to worry.

Flight prices change constantly, and there’s no guarantee Friday pricing beats what you already locked in.

Check your confirmation, and if your fare looks reasonable, move on to planning the fun parts.

What’s the Best Day to Book a Hawaii Flight?

According to Expedia’s 2026 Air Hacks report, Friday is the best overall day to book, and Sunday is one of the most expensive days to buy.

That’s a shift from the old “book on Tuesday” advice that circulated for years. I’ll be honest, that’s what I’ve done for years too.

The actual savings on a Friday booking are about 3% compared to Sunday. That may sound modest, but across a family of four on a $600 round-trip, it still adds up to real money. That’s roughly a couple of mai tais at Monkeypod at happy hour.

What’s the best day to actually fly to Hawaii?

Tuesday. And this is where the bigger savings live.

Tuesday is the least busy day to fly domestically, and it averages 14% less than Sunday departures.

That’s a meaningful difference, on a $600 ticket, you’re looking at roughly $84 per person.

If you can swing a Tuesday departure, it’s worth checking. Especially flying out of a busy hub like LAX or SFO, you’ll also notice shorter lines and a calmer airport experience.

What days should you avoid booking?

Sunday is the most expensive day to book, both for domestic and international flights.

If you find yourself browsing flights on a Sunday, don’t assume you need to buy right away. Come back Friday or Saturday and compare before booking.

What Are the Cheapest Months to Fly to Hawaii?

This is where Hawaii breaks from Expedia’s national findings, and it matters.

Expedia’s report says August is the cheapest month to fly nationally. That does not apply to Hawaii. Summer is peak season for the islands, and August fares reflect it.

For Hawaii specifically, the shoulder seasons are where the real deals are: April, May, September, and October. Prices are lower, crowds are thinner, and the weather is still excellent.

January and February can offer lower fares as well, but keep in mind that winter is actually peak season in Hawaii, because of mainland travelers chasing warm weather.

This drives up demand, and hotel rates often follow.

Planning a summer trip anyway? Check out our breakdown of Hawaii airfare costs for summer 2026 to see what prices actually look like right now.

What’s the busiest time to fly to Hawaii in 2026?

July is the busiest month overall, and June is not far behind.

The busiest individual travel dates nationally are May 22, July 3, August 29, and November 25.

If your Hawaii trip falls near any of those dates, give yourself extra time at the airport and lock in your booking as early in the 15 to 30 day window as you can.

How Far Out Should You Book Your Hawaii Flight?

Here’s where it gets interesting. The old advice of booking six months out is no longer the best move.

Expedia found that buying tickets more than 180 days ahead can actually be the most expensive time to book.

For domestic flights like most mainland-to-Hawaii routes, the sweet spot is 15 to 30 days before your trip, an average of $130 less than booking six months out.

To me that feels a bit risky. You’re planning and saving for this vacation.

Waiting that long to book your flight to save a little bit may not be worth the peace of mind booking 3 months out and ensuring your family or those you’re traveling with sit together.

Not to side-bar too much longer, but I’ve made this mistake. Our last visit, just 6 months ago, I waited about 30-45 days out of our departure.

Because of this, my family had to split up on all of our flights. Now, granted, we were traveling during Christmas break, which was very busy.

That said, if you’re flying during a peak period like July 4th, Thanksgiving, Christmas, or New Year’s, I would book earlier than the 15 to 30-day window and not cut it close.

What if you’re booking last minute?

If you’re flexible and a little adventurous, waiting until 8 to 14 days before your flight could save you an average of $225, according to Expedia’s analysis.

I’ve done this once and it worked out. However, I would not recommend it for a family vacation.

The tradeoff is fewer seat options, less control over your itinerary, and a lot of added stress, especially if you’re coordinating multiple travelers.

Take all of this with a grain of salt. If you’re traveling solo, for business, or as a couple, following some of Expedia’s data could save you some money.

When should you book your flight to Hawaii?

For most mainland U.S. travelers, the best time to book flights to Hawaii is usually 1 to 3 months before your trip.

That 30 to 90-day window is a good sweet spot because fares are often more competitive, but you still have enough flight options left to choose from. Wait too long, and the cheapest seats may be gone. Book too early, and you might miss price drops.

A good rule of thumb:

• Mainland U.S. flights to Hawaii: Start watching prices 3 to 6 months out, then be ready to book when you see a good fare in the 1 to 3-month window.
• International flights to Hawaii: Book earlier, usually 2 to 8 months in advance, especially if you are flying from Asia, Australia, Canada, or another long-haul market.
• Award flights booked with miles: Book as soon as you find a good option. Hawaii award seats can disappear quickly, especially around holidays and peak travel dates.
• Peak travel seasons: Book earlier if you are traveling during spring break, summer, Thanksgiving, Christmas, or New Year’s.
• Best days to fly: Midweek flights, especially Tuesday, Wednesday, or Thursday, are often cheaper than weekend flights.
• Best seasons for lower fares: Look at shoulder seasons like mid-April to May and September to October, when airfare, hotel rates, and crowds are often more manageable.
• Best booking strategy: Don’t wait for a magic day. Set Google Flights price alerts, watch your route, and book when the fare fits your budget.

The biggest mistake is waiting too long because you’re hoping the price will drop a little more. If the fare works for your dates, your island, and your budget, it’s usually better to book than gamble.

In my 1-on-1 Hawaii planning sessions, I never recommend waiting until just 14 days out to book flights.

Before you book, it’s worth reading through the common Hawaii travel mistakes people make before booking so you’re not leaving other money on the table.

Plan Smart, Then Enjoy Every Minute

Flights are often the biggest single cost in a Hawaii trip budget.

Knowing that Friday is the best day to book, that Tuesday is the cheapest and calmest day to fly, and that the shoulder seasons of spring and fall offer the best Hawaii-specific fares gives you a real advantage going in.

Use the Hawaii trip cost calculator to see how flights fit into your overall budget, and check out everything you need to know for planning a Hawaii trip when you’re ready to take the next step.

The islands aren’t going anywhere. Book smart, and go enjoy them.

Frequently Asked Questions About Booking Flights to Hawaii in 2026

What is the best day to book flights to Hawaii in 2026?

According to Expedia’s 2026 Air Hacks report, Friday is the best overall day to book flights. For mainland-to-Hawaii travelers, it is also worth checking Saturday because most flights from the U.S. mainland to Hawaii are domestic routes. The best move is to compare fares on both days before buying instead of assuming one day always wins.

Is Friday really the cheapest day to book Hawaii flights?

Friday is Expedia’s best overall booking day, with average savings compared to Sunday. But Hawaii airfare can vary by route, airport, airline, season, and demand. Use Friday as a smart day to check prices, but still compare against Saturday and set fare alerts before booking.

What is the cheapest day to fly to Hawaii?

Tuesday is often one of the best days to fly to Hawaii. Expedia’s data shows Tuesday as the least busy domestic travel day, with lower average fares than Sunday departures. If your schedule is flexible, compare Tuesday, Wednesday, and Thursday flights before choosing a weekend departure.

Does the day I book matter more than the day I fly?

Usually, no. The day you fly often matters more than the day you book. Booking on Friday or Saturday may help, but choosing a cheaper travel day, avoiding peak holiday weeks, and watching your route with fare alerts can make a bigger difference.

What is the cheapest month to fly to Hawaii in 2026?

Expedia’s report says August is the cheapest month to fly nationally, but Hawaii does not always follow the national average. For Hawaii trips, better value is often found during shoulder seasons like April, May, September, and October. These months usually bring a better mix of airfare, hotel prices, crowds, and weather.

Is August a cheap month to fly to Hawaii?

Not always. August may be cheaper nationally, but Hawaii is a summer destination for many families. Early August can still be expensive because of summer travel demand. If you are looking for lower Hawaii prices, compare late August with September and October before booking.

How far in advance should I book flights to Hawaii?

For most mainland U.S. travelers, booking 1 to 3 months before departure is a practical window. Expedia’s data points to possible savings closer to departure, but waiting too long can be risky for families or travelers with fixed dates. If your dates are firm, book when the fare fits your budget.

Should I wait until the last minute to book Hawaii flights?

Usually, no. Last-minute deals can happen, but Hawaii trips often involve hotels, rental cars, activities, and family schedules. Waiting until the last minute can leave you with fewer flight times, worse seats, and more stress. Last-minute booking makes more sense for solo travelers or flexible couples than for family vacations.

What is the most expensive day to fly to Hawaii?

Sunday is often one of the more expensive and busier days to fly. If your schedule allows, compare Tuesday or Wednesday departures before booking. You may find a lower fare and a calmer airport experience.

What is the best strategy for booking flights to Hawaii?

Set Google Flights price alerts, check fares on Friday and Saturday, compare midweek departures, and avoid peak holiday travel when possible. Don’t wait for a magic booking day. If the fare works for your island, dates, and budget, it is usually better to book than gamble on a small price drop.