Once you add it to Chrome, head to Google Flights and search for the trip you’re interested in. Once the results pop-up, you’ll see your legroom next to each option.

To get started with the Travel Arrow Chrome extension, download it from the Chrome Web Store and go through the steps to install it on your browser. Once installed, your Google Flight searches ...

(In Google’s example, you can type “flights,” and Chrome might predict you want to go to Google Flights, whereas before, it would just suggest search queries including the word. It will also ...