What's the best day of the week to book a flight?
When it comes to the cheapest days to book flights, you should know there's no single rule that applies all the time. In fact, so many factors go into the cost of flights that it's hard to know what prices will be from one day to the next, let alone over the course of a year or on any given day of a single month.
That said, there are some recognizable patterns when you look at the costs for airfare over a long enough timeline, and some organizations have done studies to find out the cheapest day of the week to book flights. This includes Expedia's 2024 Air Travel Hacks Report, which used actual flight data to help consumers decide on the most affordable times to book airfare or fly the friendly skies within the U.S. or overseas.
If you're hoping to save on airfare this year and are curious when you should book and which days of the week to fly, read on to learn more.
Cheapest day of the week to book a flight
So, what is the cheapest day to book a flight? In order to find out, Expedia used data compiled by the Airlines Reporting Corporation, which has information on 15 billion flights across 490 airlines.
While the cheapest day to actually pay for airfare can vary from one week to the next, Expedia data shows consumers who book airfare on Sundays instead of Fridays tend to save approximately 5% on domestic and international economy class flights. For domestic business class flights, consumers can expect to save around 7% , and for international business class flights, consumers can expect to save around 24%.
Expedia also notes that Sunday was the cheapest day to book flights in 2021, 2022 and 2023, but savings rates have varied year to year.
If you want to save more, data from Expedia's report shows you should book domestic flights at least a
month in advance to save an average of 24% compared to those who booked last-minute.
Meanwhile, booking international airfare around 60 days out tends to yield the best results, with Expedia data showing savings of around 10% for those who booked around that time. However, because average ticket prices peaked around four months out from departure, they also recommend booking no earlier than four months out. This is a clear change from Expedia's 2023 report, which recommended booking international flights around six months out from departure date.
Most affordable day of the week to travel
While booking your flight on a Sunday helps you get the lowest price, actually flying on a Thursday may help you save an average of 16% off airfare. Data shows that, almost across the board, travelers who flew on Thursdays instead of Sunday saved this much on both domestic and international flights.
However, consumers flying domestically can also see significant savings of around 13% if they fly out on Saturday instead of Sunday.
What factors impact flight prices?
A range of factors can impact the cost of flights, but most of it boils down to supply and demand. For example, costs for airfare tend to be less expensive during off-peak season to any destination, whereas prices surge during peak travel times when demand is higher.
Fuel costs can also impact flight costs, along with the cost of labor, labor shortages and other underlying issues for airlines. Ultimately, airlines use complex algorithms to determine pricing for their fares, and these factors are just part of the equation.