You've been waiting at the airport for two hours, you've had your Maccas fix, and you're ready to board the plane. There's just one problem: There is no plane. We've all been there. Flight delays are a massive headache, and Google Flights just updated with some features to help ease the pain.

Google Flights, the online search engine for comparing and booking airfares, is now available in Australia. The service instantly serves up the best flight options and prices based on your destination and travel dates. Here's how it works.

Google Flights is already awesome for searching and tracking flight prices. However, they just updated the tool to make it even more useful: It will now tell you when to book to get the best deal.