So when’s the best time to buy your next plane ticket? There’s no one answer, but here’s some information to help you.

Air tickets booked 50 days prior to departure save on average 10%.

One website suggests a 70-day advanced purchase time, but it’s often the day of the week that offers the biggest savings.

Tuesdays, Wednesdays and Saturdays are the most affordable for flying within the United States. What about international trips?

To save 10% or more, book at least 207 days ahead for the Caribbean, 160 days ahead for Europe and 110 days ahead for South America.