TYS to MEM flight delays & on-time performance
Nonstop flights from McGhee Tyson Airport to Frederick W. Smith International Airport · 342 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at TYS or MEM right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Knoxville (TYS) to Memphis (MEM) arrived on time 69% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 0% were cancelled, and 19% arrived an hour or more late.
- Allegiant Air is the only airline reporting nonstop flights on this route.
- Thursday was the most reliable day to fly (75% on time) and Sunday the least (67%).
- The largest source of delay minutes was late-arriving aircraft (93%).
Which airline is most on time from TYS to MEM?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| Allegiant Air | 69% | 0.0% | 21 min | 19.2% | 26 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
Not enough departures across different hours to compare.
Best day of the week
On-time arrival rate by day of departure.
- Monday0%0.0% cancelled
- Thursday75%0.0% cancelled
- Friday100%0.0% cancelled
- Sunday67%0.0% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Late-arriving aircraft93%
- Air traffic control & airport congestion7%
- Airline (crew, maintenance, cleaning, fueling)0%
- Extreme weather0%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
No cancellation causes recorded in this period.
TYS to MEM: common questions
- How often are TYS to MEM flights on time?
- 69% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Knoxville to Memphis cancelled?
- 0.0% of scheduled flights were cancelled (0 of 26).
- How long are typical delays?
- Across all flights the average arrival delay was 21 min (early arrivals count as zero). Flights that were late arrived 67 min behind schedule on average, and 19.2% of flights were an hour or more late.
- How long is taxi time at TYS?
- Flights on this route spent 12 min taxiing from the gate to takeoff on average.
Related routes
Return trip: MEM to TYS — 73% on time
More flights from Knoxville
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: TYS → MEM, nonstop flights by US airlines that report to the DOT. How we calculate this.