Best Day To Book International Flights 2024. Travel experts say it will likely be the same for summer 2024, so if you plan to head overseas during the warmer months, you may want to book your trip as early as. The best day to book flights is sunday, saving up to 20% on airfare, while midweek days like tuesday, wednesday, and thursday offer slightly better rates.

The best day to book flights is sunday, saving up to 20% on airfare, while midweek days like tuesday, wednesday, and thursday offer slightly better rates. Most expensive months to travel: