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
Best time to fly from BOS to TYS
Aim for departures around 11 a.m. (90% on-time); avoid 12 p.m. departures (76%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Mondaybest | 100% | 3 min |
| Tuesday | 93% | 6 min |
| Wednesdaybest | 100% | 2 min |
| Thursday | 86% | 7 min |
| Saturday | 86% | 9 min |
| Sunday | 82% | 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%.
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Based on 295 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.