Miami (MIA) to Knoxville (TYS): On-Time Performance
Data through July 2026
When you fly MIA to TYS matters as much as anything else about the booking: the route swung from 93% on-time in April 2026 to just 34% in July 2025. Across the full period the route averages 72% on-time against a national 78%.
- On-time
- 72%
- arrived <15 min late
- Avg delay
- 18 min
- completed flights
- Cancelled
- 0.7%
- Flights/day
- 1.3
- last 12 months
- Duration
- 2h 17m
- scheduled
- Distance
- 724 mi
Best airline from MIA to TYS
2 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Envoy Airmost reliable | 80% | 9 min | 0.6% | 717 |
| American Airlines | 42% | 52 min | 1.2% | 165 |
Monthly on-time trend
Best time to fly from MIA to TYS
Aim for departures around 2 p.m. (79% on-time); avoid 10 p.m. departures (43%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 68% | 18 min |
| Tuesday | 73% | 13 min |
| Wednesdaybest | 78% | 19 min |
| Thursday | 74% | 16 min |
| Friday | 74% | 19 min |
| Saturday | 69% | 22 min |
| Sunday | 69% | 19 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft46%
- Airline operations25%
- National airspace system21%
- Weather8%
Frequently asked questions
- How often are flights from MIA to TYS delayed?
- 28% of MIA–TYS flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 18 minutes.
- Which airline is most reliable from MIA to TYS?
- Envoy Air has the best on-time record on this route at 80%, based on 717 flights. 2 airlines flew MIA–TYS frequently enough to compare in this period.
- What is the best time of day to fly from MIA to TYS?
- Departures around 2 p.m. have the best record (79% on-time), while departures around 10 p.m. have the worst (43%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from MIA to TYS?
- The scheduled MIA–TYS flight time averages 2h 17m over 724 miles. Actual arrival times vary — flights on this route land 15+ minutes late 28% of the time.
- How often are MIA to TYS flights cancelled?
- 0.7% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
- What is the worst month to fly from MIA to TYS?
- July 2025 was the roughest month in this dataset, with only 34% of arrivals on time. The best was April 2026 at 93%. If your dates are flexible, that 59-point gap is worth planning around.
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Based on 899 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.