Step one: Go to Skyscanner's website.
Step two: select the country, city or airport you'd like to leave from. Leave the 'to' section blank
Step 3: click on the dates and towards the bottom you will find additional options to the calendar. Select cheapest month.
Step 4: Click search
Step 5: Research the airport information of where you are going to make sure the bus price isn't too much or there is a budget option
Step 6: Book it