Air Asia, a Southeast Asian low cost carrier, is having a fare sale starting at $4 one way. Air Asia and its affiliates serve 121 destinations in 22 countries.

You must book by June 28 and fly between February 15 and August 31, 2016 (and yes, you can book August 2016 today.) The discounted routes are listed here and start at $3.

Not all days next year are at the advertised price, but many are. Head to airasia.com and search.

Make sure to select the local currency of the departure airport for the cheapest price.