Google Data Reveals the Best Times to Book Flights for the Cheapest Airfare
Google Flights has released a robust travel report after aggregating four years of airfare data and trends to provide US travelers with an overarching guide on finding the cheapest flights and the best times to book them. I have reviewed this report thoroughly and highlighted the most important takeaways below to help you find a flight in your budget and let you relax while traveling instead of stressing about money.
For more key travel tips, explore these travel essentials you need for every vacation and then take a look at this travel checklist. You should also review CNET's roundup of the best headphones for travel.
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What days are the cheapest to fly?
CNET
If you're planning to book a flight, you're likely trying to find the most budget-friendly option. According to Google Flights, the cheapest flights are available when flying on Monday, Tuesday and Wednesday, with Tuesday being the cheapest day, according to the historical flight data.
Flying early- to midweek can save travelers 13% to 20% on airfare compared to flying on Friday, Saturday or Sunday, with Sunday the most expensive day to fly.
Do layovers on flights save you money?
It may come as no surprise that flights with layovers are cheaper than nonstop flights but you may not realize just how significant those savings can be. The Google Flight data shows that travelers can save 25% by booking a flight with a layover instead of a nonstop flight.
Which day of the week is the cheapest for booking flights?
There are certainly cheaper days to fly, there aren't really cheaper days to book. "There's not much benefit to buying your tickets on a certain day of the week," according to the Google report.
Google Flights does state that Tuesdays are typically the cheapest day of the week to book, according to the data, but Tuesday bookings are only 1.3% cheaper than the most expensive day, Sunday.
Is it cheaper to book flights far in advance?
To wait or not to wait? According to Google, it's better to book your travel far in advance, especially if you need to fly on a specific day or time. There are some patterns you can analyze to decide whether it's better to wait for lower prices or book now based on specific scenarios, destinations and dates of travel.
For domestic flights, the prices are generally at their lowest between 21 and 52 days before your trip -- with 38 days before departure being the cheapest day to book on average.
For international flights, the prices are generally lowest between 50 and 101 days before your trip, but it's generally best practice to book as early as you can. According to Google, "Average prices don't meaningfully drop anytime before departure but they usually do start to rise within 50 days of the flight itself" for international travel from the US.
Never miss out on the cheapest airfare again./Gianmarco Chumbe/CNET
When is the best time to book a flight in every season?
Here's what Google says about the best times to book holiday flights and vacation trips to certain popular destinations.
Summer break: The cheapest domestic flights in July and August are usually available 13 to 43 days in advance, with 21 days before departure being the cheapest day on average to book.
Thanksgiving: The cheapest domestic flights over the Thanksgiving holiday are usually available 26 to 59 days in advance, with 45 days out being the cheapest -- meaning it's best to book Thanksgiving flights in early October.
Christmas: The cheapest domestic flights over the winter holidays are usually available 36 to 72 days in advance, with 58 days out being the cheapest. It's best to book Christmas or holiday travel in the latter half of October.
Spring break: The cheapest domestic flights in March and April are available between 33 to 59 days in advance, with 44 days before departure being the cheapest time to book on average.
When is the best time to book a flight to Europe?
International flights to Europe from the US are usually cheaper 50 or more days before departure, with 94 days out being the cheapest day to book on average. As with all international travel, it's generally best practice to book as early as you can.
When is the best time to book a flight to Mexico or the Caribbean?
International flights to Mexico and the Caribbean are the one exception to the broader international trend, according to Google. That's because flights are generally at their lowest between 26 and 68 days in advance, with 44 days out being the cheapest.
For more, check out CNET's picks for the best travel credit cards in 2025. You can also explore the 12 travel essentials you always need to pack and the worst airlines for flight delays and cancellations.
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