https://www.cnet.com/news/google-assistant-will-work-from-your-locked-android-phone-soon-ces-2019/

Checking in to your flight with Google Assistant will make at least one part of travel hassle-free.

Anything that improves air travel deserves a clap on the back and a bottle of beer. Very soon, Google will let you check in to your flight and save and call up your boarding pass with Google Assistant on Android and iOS.