I tried adding my flight for tomorrow, Frontier 662 "F9 662", and I can't find any combination that lets it find that flight. Is the "9" in the airline abbreviation messing it up?
We just added support for 1000 additional airline codes. Some of the two digits codes were not supported by our data provider because they conflict with airlines in other countries. Anyway this is resolved now, you should be able to find Frontier flights.
