Originally Posted by
JetOutTonight
That mostly cover international flights. Looking for domestic routes.
What is everyone using (Cirium, IATA, etc)?
You can use ITA Matrix if you are looking for particular types of metal. If you are looking for non-stops out of a particular city, Google Flights in map view works pretty well. Also useful for seeing when a particular route stops or starts or which days it operates when it has less than daily frequencies using calendar view.