By Adam Jusko,,

If you want to save on air travel, booking your flight three weeks out is usually the “sweet spot,” according to a new study from Airlines Reporting Corporation and Expedia Group. Even better, the study suggests booking on the weekend could save you 20% or more, with Sunday being an especially good day for savings.

The 2019 Travel Pricing Outlook Report also offers these nuggets for travelers who want to save:

  • The best hotel deals are offered on Fridays.
  • The worst day to book hotels is Sunday.
  • If you can start your trip on a Thursday or Friday, you’re likely to save money.
  • But don’t book your flight on a Thursday or Friday; those are the most expensive days to book.