When you are planning your next vacation you may try Skyscanner to find out the cheapest ticket, it is a very useful site.
Visit https://www.skyscanner.net/ or download the app from Google Play store / Itunes
After entering your search terms, you’ll have the option to see a calendar view or a chart. Both aim to show you the most affordable dates to fly your selected route. Once you choose your dates, Skyscanner will show your results. The results can be filtered by factors like date, time, airline, and alliance.
You’ll be redirected to the appropriate website. If you’re booking an economy fare, watch out for basic economy fares versus regular economy, as sometimes it’s not obvious which you’re booking until you’re offered 2 price options while being redirected from Skyscanner.
Skyscanner also has an explore map feature. You can see which cities are affordable to fly to from your home airport. There are also monthly deals which search for the best airfare prices to “everywhere” from your departure city.