TYS (Knoxville) to PHL (Philadelphia) flights arrive on time 85% of the time. The most reliable airline on this route is PSA Airlines at 85%. The average delay is 84 minutes. Delays on this route are most often caused by the airline (crew, maintenance, or boarding).
Source: Bureau of Transportation Statistics. Updated March 2026.TYS → PHL
TYS (Knoxville) to PHL (Philadelphia)
TYS → PHL on-time performance by month
24
25
JanFebMarAprMayJunJulAugSepOctNovDec
Worse
Better
This route is on time most of the time. About 85% of flights arrive on schedule.
Delays on this route are most often caused by the airline (crew, maintenance, or boarding).
Accurate?
Airlines are roughly equal on this route — PSA Airlines leads slightly at 85% vs Frontier Airlines at 81%.
Airline Comparison
PSA Airlines leads at 85% on time; Frontier Airlines trails at 81%.
Accurate?
Good to know
Departing from TYS
80% on timeExpect ~19 min sitting on the taxiway after your gate pushes back. TYS has long runway queues.
TSA is currently ~5 min. Best time: 4 AM (about 5 min).
Arriving at PHL
79% on timeWhen flights into PHL are late, the average delay is 79 minutes. Build buffer if you have ground plans.
If connecting at PHL: TSA is ~5 min right now. Allow at least 60 minutes for a domestic connection.
Flight cancelled or delayed?
Check what PSA Airlines owes you — refund rights, action plan, complaint email. Free.
Free flight briefing
Know before you go
Flying TYS → PHL? We'll brief you before takeoff.
Delay riskDOT stats + live data
TSA waitCurrent checkpoint lines
WeatherBoth airports
Gate & terminalLive updates
Know someone flying soon?
Send them the link — delay data, TSA waits, weather, all free.
Data last updated March 2026. Source: Bureau of Transportation Statistics.