BTS DATA COMPLETE THROUGH JUNE 2026HISTORICAL ODDS · NOT LIVE FLIGHT STATUS
DelayOddsKnow the route before you book
SDFPHL

Louisville, KY (SDF) to Philadelphia, PA (PHL) flight delay odds

Historically, 85.0% of scheduled reportable flights on this direction arrived on time in July 2025–June 2026. The sample includes 602 flights.

HISTORICAL ROUTE SIGNALGenerally reliable
85.0%arrived on time
9.5%30+ min late
1.7%cancelled
602scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late5.5%all scheduled flights
120+ minutes late2.0%all scheduled flights
Diverted0.2%did not reach as scheduled
Average arrival-3.2 mincompleted flights

When is this route most reliable?

The same route can behave differently through the day. These are scheduled departure windows, not actual departure times. Small time windows with fewer than 40 flights are withheld.

Departure windowFlightsOn time30+ minCancelled
Early morning29790.6%5.7%1.7%
Late morning6489.1%3.1%4.7%
Afternoon13975.5%15.8%1.4%
Evening10279.4%15.7%0.0%

Weekday comparison

Day-of-week results use at least 30 scheduled flights per row. Look for broad patterns, not tiny percentage differences.

DayFlightsOn time30+ minCancelled
Monday9380.6%14.0%4.3%
Tuesday8186.4%7.4%2.5%
Wednesday8091.2%5.0%0.0%
Thursday9474.5%16.0%1.1%
Friday9187.9%6.6%1.1%
Saturday7290.3%6.9%0.0%
Sunday9186.8%8.8%2.2%

Airline comparison

Marketing-carrier results make codeshare flights easier to compare as travelers buy them. Dedicated route-airline reports require at least 160 flights.

AirlineFlightsOn time30+ minCancelled
Republic Airways34590.1%6.7%1.4%
PSA Airlines25077.6%13.6%2.0%
American Airlines7100.0%0.0%0.0%

Monthly trend

Month-by-month results show whether a twelve-month average hides an unusual period.

MonthFlightsOn time30+ minCancelled
July 20255682.1%14.3%3.6%
August 20253688.9%5.6%2.8%
September 20256689.4%4.5%0.0%
October 20258780.5%13.8%0.0%
November 20251275.0%8.3%0.0%
December 20251883.3%16.7%0.0%
January 20262596.0%0.0%4.0%
February 20264575.6%11.1%8.9%
March 20266279.0%12.9%1.6%
April 20266287.1%9.7%0.0%
May 20267094.3%2.9%0.0%
June 20266385.7%11.1%1.6%

What drove reported delay minutes?

BTS cause minutes are reported for qualifying delayed flights. These shares describe recorded delay minutes—not the chance that a particular cause will affect your next flight.

Airline36.5%
Late aircraft52.7%
National airspace9.1%
Weather1.7%
Security0.0%
This is historical evidence, not a forecast.

Weather, schedules and operations change. For a trip you have already booked, use the airline or airport for live status.