Airlines often bury the details, and it's pretty common to get slapped with a hefty fee after booking what's billed as a great deal. This way, you can ostensibly avoid all the up-charges that have a way of making you grit your teeth when there's no overhead bin space and you can't select your own seat.
Additionally, Google will track the reasons why flights are delayed. Citing historical flight data, the company will use its machine learning software to monitor interrupted flight service and even provide the cause of delays, whether it's weather-related, a mechanical issue, or the like. The company says that "delays are only flagged when we’re at least 80% confident in the prediction."
Consumers are always subject to the whims of airlines and often have no recourse when slapped with extra dollar signs. Google's doing its best to make a crummy thing slightly less so.