Google Flights Debunks Day-of-Week Booking Myth With Five-Year Data

Google Flights has released a comprehensive analysis of flight booking trends, debunking the popular myth that booking tickets on a specific weekday leads to lower fares. The study, based on five years of aggregated data, reveals that the weekday you purchase a ticket has minimal impact on price, with only a 1.4% difference between the cheapest and most expensive days. Sunday is marginally the priciest day to book, while Wednesday is slightly the cheapest, but this variation is too small to significantly influence travel planning.

The key factor in securing lower airfares is the timing of your booking relative to your departure date and the days you choose to fly. For domestic flights, the lowest average fares appear around 39 days before departure, within a window of 22 to 57 days. Thanksgiving travel sees a slightly narrower window, with optimal booking around 34 days before departure, suggesting October 22 for a November 26 flight. Christmas travel has a broader window, with the best fares appearing 56 days before departure, ideal for booking between late October and mid-November.

International travel also follows distinct patterns. Europe trips are best booked around 90 days out, while Mexico and the Caribbean flights see lower fares approximately 43 days before departure. Summer vacations in July or August have the shortest booking window, with the lowest fares appearing just 21 days before departure. These figures are historical averages and may vary based on specific routes, airports, and airlines.

Flexibility in travel days can lead to significant savings. Flying midweek, particularly on Monday and returning on Tuesday or Wednesday, can reduce fares by up to 14% compared to weekend travel. Domestic routes see even higher savings of up to 20% by avoiding Sunday departures and returns. Additionally, nonstop itineraries tend to be about 20% more expensive than connecting flights, a factor worth considering when planning your trip.