McGhee Tyson in September 2023

83.9%departed on time

BTS: A flight is counted as on time if it arrived less than 15 minutes after its scheduled time. Only carriers with at least 0.5 percent of domestic scheduled passenger revenue report.

In September 2023, reporting carriers scheduled 1,248 domestic departures from McGhee Tyson (TYS). 83.9% left less than 15 minutes late and 82.7% reached their destination on time; 1.2% were cancelled.

Nationally that month, 80.5% of flights departed on time and 80.1% arrived on time, so TYS departures were 3.4 points above the national departure figure.

Flights arriving at TYS that month were on time 78.3% of the time (1,247 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 45%, late-arriving aircraft 39% and national aviation system 11%.

On time 82.7%
Arrived 15+ minutes late 15.8%
Cancelled 1.2%
Diverted 0.3%

Every scheduled departure from TYS in September 2023, judged by arrival at the destination.

September 2023 against a year earlier, the airport's year and the nation

Measure	Sep 2023	Year earlier	TYS, 12 months to Jul 2026	All reported flights, Sep 2023
Departed on time	83.9%	—	76.3%	80.5%
Arrived on time	82.7%	—	75.1%	80.1%
Cancelled	1.2%	—	2.1%	1.2%
Average departure delay (late minutes only)	12.8 min	—	22.0 min	14.1 min
Scheduled departures a day	42	—	37	18,978
Scheduled departures	1,248	—	13,561	569,338

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OH PSA Airlines	286	23%	85.7%	-2.1 min	1.4%
OO SkyWest Airlines	249	20%	78.3%	11.2 min	0.0%
9E Endeavor Air	225	18%	84.9%	-0.9 min	3.1%
G4 Allegiant Air	176	14%	80.1%	6.6 min	0.0%
DL Delta Air Lines	128	10%	93.8%	-7.8 min	0.0%
AA American Airlines	127	10%	74.0%	11.7 min	0.0%
YX Republic Airline	34	3%	76.5%	-1.3 min	11.8%
F9 Frontier Airlines	13	1%	92.3%	-9.8 min	0.0%
MQ Envoy Air	10	1%	80.0%	7.4 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
TYS–ATL	Knoxville to Atlanta	219	91.8%	-5.4 min	0.0%
TYS–ORD	Knoxville to Chicago	190	75.8%	13.3 min	0.0%
TYS–CLT	Knoxville to Charlotte	182	83.0%	3.5 min	0.0%
TYS–DCA	Knoxville to Washington	113	82.3%	-4.2 min	3.5%
TYS–LGA	Knoxville to New York	105	76.2%	4.7 min	9.5%
TYS–DFW	Knoxville to Dallas/Fort Worth	89	75.3%	12.0 min	0.0%
TYS–DEN	Knoxville to Denver	81	87.7%	0.5 min	0.0%
TYS–DTW	Knoxville to Detroit	59	88.1%	-7.5 min	1.7%
TYS–SFB	Knoxville to Sanford	46	78.3%	3.6 min	0.0%
TYS–PHL	Knoxville to Philadelphia	37	91.9%	-7.2 min	0.0%
TYS–PIE	Knoxville to St. Petersburg	29	79.3%	11.4 min	0.0%
TYS–FLL	Knoxville to Fort Lauderdale	25	76.0%	4.9 min	0.0%

By scheduled departure hour

100

On-time share:under 62%6270768288% and over

Share of departures that left less than 15 minutes late, by scheduled hour (local time), September 2023.

Delay causes

BTS cause category	Share of delay minutes	National, Sep 2023	Minutes
Air carrier	44.8%	36.4%	6,824
Late-arriving aircraft	39.0%	38.3%	5,941
National Aviation System	10.6%	19.9%	1,612
Extreme weather	5.7%	5.1%	869
Security	0.0%	0.2%	0

15,246 delay minutes on 197 flights that arrived 15 or more minutes late and carried a cause report. Carriers assign the categories; see what each category means.

Questions and answers

How many flights left TYS on time in September 2023?

83.9% of 1,248 scheduled domestic departures left less than 15 minutes late, and 82.7% reached their destination on time. The national figures that month were 80.5% and 80.1%.

How does that compare with a year earlier?

September 2022 is outside the 36 months on file, or the airport had too few reported flights that month.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for September 2023; public domain. Domestic scheduled flights by reporting carriers, totals and averages only. The site's data runs through July 2026. Full record for TYS · methodology · corrections.