This extension will allow you to check the cheapest flights from the nearest airport to any place you want. You just need to open a new tab to browse the list of locations, and you can always change the destination later.

As you navigate through the locations, you can check how much the prices of each flight are in your pocket.

Whenever you click on the "Book Now" button, you'll be taken directly to Skyscanner. 

You just need to choose your preferred flight, and you'll be redirected to Skyscanner where you can see all the flight prices and check if a flight suits you.