On-Time Report

Airports › Louisville (SDF) › June 2026

Airport month · June 2026

Louisville Muhammad Ali International in June 2026

75.4%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 June 2026, reporting carriers scheduled 2,012 domestic departures from Louisville Muhammad Ali International (SDF). 75.4% left less than 15 minutes late and 75.4% reached their destination on time; 2.1% were cancelled.

Nationally that month, 72.2% of flights departed on time and 72.8% arrived on time, so SDF departures were 3.2 points above the national departure figure.

A year earlier, in June 2025, the airport had 2,114 departures with 74.7% leaving on time: a change of +0.7 points, with flights down 5%.

Flights arriving at SDF that month were on time 72.4% of the time (2,011 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 42%, air carrier 26% and national aviation system 25%.

Every scheduled departure from SDF in June 2026, judged by arrival at the destination.

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

MeasureJun 2026Jun 2025SDF, 12 months to Jul 2026All reported flights, Jun 2026
Departed on time75.4%74.7%80.0%72.2%
Arrived on time75.4%74.1%79.7%72.8%
Cancelled2.1%2.4%2.2%1.6%
Average departure delay (late minutes only)20.1 min22.0 min15.9 min20.6 min
Scheduled departures a day67716320,253
Scheduled departures2,0122,11423,144607,577

Airlines that month

Reporting carrierFlightsShareOn timeAvg arrival delayCancelled
YX Republic Airline57429%83.6%-0.3 min1.2%
WN Southwest Airlines48324%72.0%10.0 min1.4%
DL Delta Air Lines23612%87.7%-4.7 min0.4%
AA American Airlines1668%65.7%30.7 min4.8%
OO SkyWest Airlines1568%70.5%15.3 min4.5%
OH PSA Airlines1357%71.1%28.5 min4.4%
MQ Envoy Air1116%67.6%16.6 min3.6%
G4 Allegiant Air915%50.5%54.9 min1.1%
UA United Airlines603%76.7%6.2 min1.7%

Busiest routes that month

RouteCitiesFlightsOn timeAvg arrival delayCancelled
SDF–ATLLouisville to Atlanta23687.7%-4.7 min0.4%
SDF–ORDLouisville to Chicago23177.5%9.4 min4.3%
SDF–DFWLouisville to Dallas/Fort Worth17564.0%22.0 min6.3%
SDF–CLTLouisville to Charlotte14573.8%18.3 min2.1%
SDF–LGALouisville to New York9184.6%-8.6 min2.2%
SDF–DENLouisville to Denver9074.4%8.9 min1.1%
SDF–EWRLouisville to Newark9085.6%-0.9 min0.0%
SDF–MDWLouisville to Chicago9075.6%5.0 min5.6%
SDF–DCALouisville to Washington8665.1%32.6 min5.8%
SDF–BWILouisville to Baltimore8175.3%4.0 min2.5%
SDF–DTWLouisville to Detroit7177.5%2.1 min0.0%
SDF–MCOLouisville to Orlando6863.2%21.8 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), June 2026.

Delay causes

BTS cause categoryShare of delay minutesNational, Jun 2026Minutes
Air carrier26.4%30.8%9,948
Late-arriving aircraft41.8%42.1%15,740
National Aviation System25.1%20.3%9,434
Extreme weather6.6%6.7%2,486
Security0.0%0.1%12
37,620 delay minutes on 443 flights that arrived 15 or more minutes late and carried a cause report. Carriers assign the categories; see what each category means.
← May 2026July 2026 →

Questions and answers

How many flights left SDF on time in June 2026?

75.4% of 2,012 scheduled domestic departures left less than 15 minutes late, and 75.4% reached their destination on time. The national figures that month were 72.2% and 72.8%.

How does that compare with a year earlier?

In June 2025, 74.7% of 2,114 departures left on time and 2.4% were cancelled, against 75.4% and 2.1% in June 2026.

Provenance

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