Cheapest booking time: 44 days before departure
Low price range: 26 to 68 days or more before takeoff
If you’d like to travel internationally but are working on a tighter planning schedule, Mexico and the Caribbean are great alternatives, given their flexible price deadlines.
To get the cheapest rate, you’d have to book your tickets 44 days in advance, per Google Flights. However, you could still get cheap tickets between 26 and 68 days before the departure date.
Overall, you’d benefit from booking your international tickets far in advance and for domestic travel, remaining within the 40 to 45-day window on most occasions.
Finally, if you’re OK with spending more time getting to your destination to spend less money, then you could opt for a flight with a layover. Per Google Flights, flights without stops, on average, cost 25% more than flights that do have stops.