The good news is that if that has happened to you before, but you don’t want to give up on the convenience of Google Flights, you’ll be pleased to learn that Google has announced that they will be introducing a money-back price guarantee feature to Google Flights. This means that you won’t need to worry about finding the best price as Google will refund you the difference.
According to Google, “When we predict the price won’t decrease for select itineraries booked between August 13 and September 2, we’ll guarantee the price won’t drop, and we’ll refund you the difference if it does. We’ll monitor the price for you and if the price drops any time before departure, we’ll send you an email letting you know once your flight takes off–so there’s no work on your end.”
That being said, Google does note that this only applies if the price difference is greater than $5 and lower than $500. It is also only available for select itineraries originating from the US.