FlightRecord

Boston (BOS) to Knoxville (TYS): On-Time Performance

Data through May 2026

Boston (BOS) to Knoxville (TYS) is a thinner route than most in this dataset — 163 departures over the past year, roughly 3 a week — so treat these numbers as indicative rather than definitive. Of the flights that did operate, 86% arrived on time, comfortably above the national average of 78%.

On-time
86%
arrived <15 min late
Avg delay
8 min
completed flights
Cancelled
0.0%
Flights/day
0.45
last 12 months
Duration
2h 28m
scheduled
Distance
830 mi

Monthly on-time trend

Monthly on-time percentage for BOS to TYS flights50%75%100%June 2024: 92% on-time (12 flights)92Jun 2024July 2024: 100% on-time (13 flights)100August 2024: 73% on-time (11 flights)73September 2024: 100% on-time (10 flights)100Sep 2024October 2024: 88% on-time (17 flights)88November 2024: 90% on-time (10 flights)90December 2024: 82% on-time (11 flights)82Dec 2024January 2025: 50% on-time (2 flights)50February 2025: 57% on-time (7 flights)57March 2025: 90% on-time (10 flights)90Mar 2025April 2025: 92% on-time (13 flights)92May 2025: 88% on-time (16 flights)88June 2025: 76% on-time (21 flights)76Jun 2025July 2025: 87% on-time (23 flights)87August 2025: 94% on-time (17 flights)94September 2025: 79% on-time (14 flights)79Sep 2025October 2025: 79% on-time (19 flights)79November 2025: 94% on-time (16 flights)94December 2025: 77% on-time (13 flights)77Dec 2025January 2026: 67% on-time (3 flights)67February 2026: 100% on-time (5 flights)100March 2026: 100% on-time (9 flights)100Mar 2026April 2026: 100% on-time (12 flights)100May 2026: 82% on-time (11 flights)82

Best time to fly from BOS to TYS

Aim for departures around 11 a.m. (90% on-time); avoid 12 p.m. departures (76%).

On-time percentage by scheduled departure hour, BOS to TYS9 a.m.: 87% on-time (93 flights)910 a.m.: 89% on-time (54 flights)1011 a.m.: 90% on-time (93 flights)1112 p.m.: 76% on-time (53 flights)12scheduled departure hour

By day of week

DayOn-timeAvg delay
Mondaybest100%3 min
Tuesday93%6 min
Wednesdaybest100%2 min
Thursday86%7 min
Saturday86%9 min
Sunday82%12 min

What causes delays on this route

Share of total delay minutes by cause, as reported by carriers to the US DOT.

  • Late-arriving aircraft48%
  • Airline operations14%
  • National airspace system31%
  • Weather8%

Frequently asked questions

How often are flights from BOS to TYS delayed?
14% of BOS–TYS flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-06 and 2026-05. The average arrival delay across completed flights was 8 minutes.
What is the best time of day to fly from BOS to TYS?
Departures around 11 a.m. have the best record (90% on-time), while departures around 12 p.m. have the worst (76%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
How long is the flight from BOS to TYS?
The scheduled BOS–TYS flight time averages 2h 28m over 830 miles. Actual arrival times vary — flights on this route land 15+ minutes late 14% of the time.
How often are BOS to TYS flights cancelled?
0% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, at or below the national rate of 1.6%.

Based on 295 flights, 2024-062026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.