BTS DATA COMPLETE THROUGH JUNE 2026HISTORICAL ODDS · NOT LIVE FLIGHT STATUS
DelayOddsKnow the route before you book
ORD→TYS

Chicago, IL (ORD) to Knoxville, TN (TYS) flight delay odds

64.1% of 2,219 official scheduled ORD-to-TYS flights arrived on time; 23.5% arrived at least 30 minutes late and 3.7% were cancelled during July 2025–June 2026.

Source: U.S. Bureau of Transportation Statistics · Reporting window: July 2025–June 2026 · Updated September 16, 2026

HISTORICAL ROUTE SIGNALVariable
64.1%arrived on time
23.5%30+ min late
3.7%cancelled
2,219scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late14.7%all scheduled flights
120+ minutes late7.6%all scheduled flights
Diverted0.1%did not reach as scheduled
Average arrival+28.5 mincompleted flights

Which departure time was most reliable for ORD to TYS?

Among qualifying ORD-to-TYS departure window results, Early morning had the highest on-time rate: 75.8% of 393 flights. Evening was lowest at 52.0% across 708 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning39375.8%17.0%1.8%
Late morning50971.3%18.1%2.8%
Afternoon57465.0%24.0%3.0%
Evening70852.0%30.9%6.1%

Which weekday was most reliable for ORD to TYS?

Among qualifying ORD-to-TYS weekday results, Tuesday had the highest on-time rate: 68.3% of 319 flights. Monday was lowest at 60.3% across 325 flights.

DayFlightsOn time30+ minCancelled
Monday32560.3%25.5%5.8%
Tuesday31968.3%21.3%2.2%
Wednesday31565.7%22.5%2.2%
Thursday32263.0%24.8%3.4%
Friday32164.8%22.7%3.1%
Saturday29265.8%20.9%5.8%
Sunday32560.9%26.5%3.7%

Which airline was most reliable for ORD to TYS?

Among qualifying ORD-to-TYS airline results, Envoy Air had the highest on-time rate: 77.3% of 176 flights. PSA Airlines was lowest at 56.1% across 834 flights.

AirlineFlightsOn time30+ minCancelled
PSA Airlines83456.1%29.4%6.7%
SkyWest Airlines81570.1%20.0%1.8%
United Airlines31659.5%25.6%2.5%
Envoy Air17677.3%11.9%2.3%
Republic Airways7875.6%15.4%0.0%

Which month was most reliable for ORD to TYS?

Among qualifying ORD-to-TYS month results, September 2025 had the highest on-time rate: 79.1% of 191 flights. January 2026 was lowest at 46.2% across 119 flights.

MonthFlightsOn time30+ minCancelled
July 202524561.2%24.9%3.7%
August 202522770.0%22.5%2.2%
September 202519179.1%14.1%1.0%
October 202523370.4%17.6%0.4%
November 202517755.9%25.4%7.9%
December 202512948.8%38.8%6.2%
January 202611946.2%35.3%9.2%
February 202612553.6%34.4%0.8%
March 202614949.0%29.5%11.4%
April 202619871.2%19.2%3.0%
May 202621671.3%18.5%1.9%
June 202621069.5%19.0%2.4%

What drove ORD to TYS delay minutes?

Late aircraft was the largest recorded ORD-to-TYS delay category, accounting for 54.7% of 73,847 BTS-attributed delay minutes during July 2025–June 2026.

Airline24.8%
Late aircraft54.7%
National airspace11.9%
Weather8.6%
Security0.0%
This is historical evidence, not a forecast.

Weather, schedules and operations change. For a trip you have already booked, use the airline or airport for live status.