Being able to quickly find a passport number can save you a lot of time and hassle when you’re booking travel — particularly as you may be asked to input your number when booking an international flight.

If you’re wondering how to find your passport number, we’ve got you covered with a few ways you can look it up.

How to find a passport number on your passport

If you have your passport handy, you can find your passport number on the top right side of the page that features your picture. In the example below, the number is within the red box.

While this is the easiest way to find your passport number, you may not always be near your physical passport — or maybe you’ve lost it. Since you may need your number when you don’t have access to your passport, below we dive into some other ways to find it.