What is the cheapest day of the week to fly?
By Rive News / Research desk | Rive News / Published October 20, 2026 at 9:00 AM PKT
Key takeaways
- Expedia's 2026 Air Hacks report finds Tuesday the cheapest day to fly domestically, about 14% below Sunday.
- For international trips, Friday departures run about 8% cheaper than Sunday, and Friday is also the cheapest day to book.
- How far ahead you buy moves the price far more than which weekday you click "book."
Tuesday has a reputation as the cheapest day to fly, and the data mostly backs it up. But the full answer depends on whether you are flying domestic or international.
Two different questions hide inside one: the cheapest day to travel, and the cheapest day to buy the ticket. They have different answers, and the travel day matters more.
This article explains the cheapest day of the week to fly, including the best departure days, the best booking days, how far ahead to buy, and why the day you fly matters more.
A view from a passenger window. Midweek departures like Tuesday see lower demand, which is why they price lower.
Image Credits: Wikimedia Commons
The cheapest days to fly
For US domestic routes, Expedia's 2026 Air Hacks Report found Tuesday departures run about 14% cheaper than Sunday ones. A midweek trip out and back remains the safest bet, AirAdvisor reports.
Saturday is the other budget departure day domestically, also landing 14 to 17% below Sunday in several analyses. Sunday and Friday are the priciest days to be in the air.
For international flights the pattern flips. Expedia names Friday the cheapest day to fly internationally, about 8% below Sunday, as business travel winds down for the week.
Google Flights found the same shape from the other side: flights on Monday to Wednesday run about 13% cheaper than weekend days, Money reports.
An airplane wing through the cabin window. Shifting a weekend trip to midweek is the single biggest weekday saving most travelers can make.
Image Credits: Wikimedia Commons
The cheapest days to book
The day you buy is a smaller lever. Expedia's 2026 report names Friday the cheapest day to book, about 3% below a Sunday purchase, for both domestic and international trips.
For US domestic bookings specifically, Saturday edges out Friday with about 2% savings versus Monday, the priciest booking day. The gap is small either way.
Google's own analysis of 2021 to 2025 booking data found even less to gain: Tuesday was cheapest to book but only 1.3% below Sunday. On a 500-dollar ticket that is about six and a half dollars, MoneyLion notes.
Do not skip a good fare to wait for Friday. The weekday booking gap is a tiebreaker, not a strategy.
The old advice was to buy on Tuesday, back when airlines loaded fare sales early in the week. Modern pricing algorithms react to search demand around the clock, which is why the booking-day gap has shrunk to a few percent, MoneyLion reports.
How far ahead you buy matters more
Google Flights advises booking about 39 days ahead for domestic flights and 49 days ahead for international ones. Its group product manager James Byers says travelers should focus on advance timing, not the weekday.
Expedia's window sits closer in: roughly 15 to 30 days ahead for domestic trips, averaging about 130 dollars less than buying more than six months out.
For international trips, Expedia suggests 31 to 45 days ahead, saving around 190 dollars versus a six-months-out purchase. Booking 8 to 15 days out can beat that, but you gamble on seat availability.
Set a price alert early and watch. Airline pricing now reacts to demand in real time, so tracking a route beats guessing at it. Starting your search weeks ahead costs nothing and lets the alert do the watching for you.
The month you fly counts too
February is the most affordable month to fly internationally, with fares down 74% from the December peak, according to Expedia's 2026 report. Shoulder season is the budget traveler's friend.
August can be the cheapest month on some analyses, with international fares about 120 dollars below December averages. The exact winner moves year to year.
Expedia travel expert Sarah King notes that with business travelers heading home earlier in the week, leisure travelers unlock better value by picking smarter travel days like Friday, with the bonus of starting the weekend early.
Once the cheap fare is booked, the savings continue on the ground. Pack only a carry-on to dodge baggage fees on budget airlines, and know what to do if the flight is delayed overnight.
Clouds from a cabin window. Cheaper months and midweek departures stack: the calendar matters as much as the clock.
Image Credits: Wikimedia Commons
Frequently asked questions
Is Tuesday or Wednesday cheaper to fly?
Both beat the weekend. Tuesday leads most domestic analyses at about 14% below Sunday, and Wednesday sits close behind. For international trips, Friday takes the lead at about 8% below Sunday.
Does the day of the week you book still matter?
Barely. The cheapest booking day beats the priciest by only 2 to 3%, roughly 15 dollars on a 500-dollar ticket. Advance timing and the departure day move the price far more.
What is the most expensive day to fly?
Sunday, for both domestic and international trips. Friday runs a close second on leisure routes and leads outright on business-heavy ones.
Do these rules work for international flights?
Partly. The midweek advantage holds, but the cheapest international departure day is Friday, not Tuesday, at about 8% below Sunday. Booking windows also stretch longer: 31 to 45 days ahead instead of two to four weeks.
The bottom line
Fly Tuesday for domestic trips and Friday for international ones, buy a few weeks out, and travel in cheaper months like February. The weekday you book barely matters. Set a fare alert on your route today, buy inside the sweet-spot window, and rest easier on the red-eye knowing you paid less than the Sunday crowd.
Topics: cheap flights, airfare, flight booking, travel tips, budget travel
Rive News is the research desk behind Rive News's travel guides, covering the practical side of flying in plain language.
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