On-Time Report

Airports › Knoxville (TYS) › May 2026

Airport month · May 2026

McGhee Tyson in May 2026

79.6%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 May 2026, reporting carriers scheduled 1,308 domestic departures from McGhee Tyson (TYS). 79.6% left less than 15 minutes late and 79.2% reached their destination on time; 1.1% were cancelled.

Nationally that month, 77.1% of flights departed on time and 77.6% arrived on time, so TYS departures were 2.5 points above the national departure figure.

A year earlier, in May 2025, the airport had 1,131 departures with 75.5% leaving on time: a change of +4.1 points, with flights up 16%.

Flights arriving at TYS that month were on time 72.0% of the time (1,308 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 38%, late-arriving aircraft 35% and national aviation system 19%.

Every scheduled departure from TYS in May 2026, judged by arrival at the destination.

May 2026 against a year earlier, the airport's year and the nation

MeasureMay 2026May 2025TYS, 12 months to Jul 2026All reported flights, May 2026
Departed on time79.6%75.5%76.3%77.1%
Arrived on time79.2%75.5%75.1%77.6%
Cancelled1.1%1.7%2.1%0.9%
Average departure delay (late minutes only)16.8 min22.8 min22.0 min16.0 min
Scheduled departures a day44383720,391
Scheduled departures1,3081,13113,561611,735

Airlines that month

Reporting carrierFlightsShareOn timeAvg arrival delayCancelled
G4 Allegiant Air27021%71.1%19.6 min0.0%
OH PSA Airlines24118%83.4%0.4 min0.8%
DL Delta Air Lines17413%86.2%-6.9 min3.4%
WN Southwest Airlines16513%83.6%0.6 min0.0%
AA American Airlines13310%70.7%12.5 min3.0%
OO SkyWest Airlines13310%74.4%12.3 min2.3%
UA United Airlines1098%83.5%6.7 min0.0%
MQ Envoy Air746%85.1%2.3 min0.0%
F9 Frontier Airlines81%87.5%-30.0 min0.0%
YX Republic Airline10%100.0%-17.0 min0.0%

Busiest routes that month

RouteCitiesFlightsOn timeAvg arrival delayCancelled
TYS–ORDKnoxville to Chicago21576.7%11.9 min1.9%
TYS–ATLKnoxville to Atlanta17486.2%-6.9 min3.4%
TYS–DFWKnoxville to Dallas/Fort Worth16372.4%10.6 min2.5%
TYS–DCAKnoxville to Washington9480.9%3.1 min1.1%
TYS–CLTKnoxville to Charlotte9087.8%-4.9 min0.0%
TYS–DENKnoxville to Denver8489.3%-8.2 min0.0%
TYS–BNAKnoxville to Nashville6277.4%0.0 min0.0%
TYS–SFBKnoxville to Sanford4959.2%24.4 min0.0%
TYS–PIEKnoxville to St. Petersburg4889.6%-0.8 min0.0%
TYS–MCOKnoxville to Orlando4080.0%8.7 min0.0%
TYS–FLLKnoxville to Fort Lauderdale3938.5%87.3 min0.0%
TYS–MIAKnoxville to Miami3683.3%6.5 min0.0%

By scheduled departure hour

On-time share:under 62%6270768288% and over
Share of departures that left less than 15 minutes late, by scheduled hour (local time), May 2026.

Delay causes

BTS cause categoryShare of delay minutesNational, May 2026Minutes
Air carrier38.0%33.0%8,016
Late-arriving aircraft35.1%40.4%7,400
National Aviation System18.5%20.5%3,896
Extreme weather6.9%6.0%1,453
Security1.5%0.1%307
21,072 delay minutes on 253 flights that arrived 15 or more minutes late and carried a cause report. Carriers assign the categories; see what each category means.
← April 2026June 2026 →

Questions and answers

How many flights left TYS on time in May 2026?

79.6% of 1,308 scheduled domestic departures left less than 15 minutes late, and 79.2% reached their destination on time. The national figures that month were 77.1% and 77.6%.

How does that compare with a year earlier?

In May 2025, 75.5% of 1,131 departures left on time and 1.7% were cancelled, against 79.6% and 1.1% in May 2026.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for May 2026; 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.