You can enter multiple locations in Origin and Destinations. Cheapest option among those will appear on the top...
Google Flights Calendar is your first point where you can look for cheap airfare
Whenever there is a price change, Google will send you an email on your registered mail id
This is an excellent view and you can adjust your travel dates accordingly
Nothing can beat the Google Flights Price graph when it comes to comparing the rates.
Ever felt like just packing your bags and go out anywhere in the world?
This will work only if you are fine with moving your travel dates based on the cheapest airfare.