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

Philadelphia, PA (PHL) to Detroit, MI (DTW) flight delay odds

Historically, 77.3% of scheduled reportable flights on this direction arrived on time in July 2025–June 2026. The sample includes 2,952 flights.

HISTORICAL ROUTE SIGNALVariable
77.3%arrived on time
14.4%30+ min late
3.0%cancelled
2,952scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late9.0%all scheduled flights
120+ minutes late4.6%all scheduled flights
Diverted0.1%did not reach as scheduled
Average arrival+8.2 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 morning80584.6%8.8%2.4%
Late morning45486.3%7.0%2.2%
Afternoon76376.3%16.5%2.2%
Evening65267.8%22.7%2.5%
Night27866.2%17.3%10.1%

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
Monday44076.8%13.9%4.3%
Tuesday42085.2%9.8%2.1%
Wednesday41478.5%14.0%1.7%
Thursday43776.9%16.2%1.8%
Friday43773.9%16.9%1.8%
Saturday36478.0%11.0%3.8%
Sunday44072.0%18.2%5.7%

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
Delta Air Lines1,55780.6%13.1%2.1%
PSA Airlines84571.6%15.6%5.8%
American Airlines17978.8%15.6%0.6%
Spirit Airlines13387.2%9.0%0.8%
Republic Airways11272.3%16.1%2.7%
SkyWest Airlines6965.2%27.5%2.9%
Frontier Airlines5766.7%21.1%1.8%

Monthly trend

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

MonthFlightsOn time30+ minCancelled
July 202528164.4%23.8%4.3%
August 202526879.9%13.1%1.1%
September 202526788.0%8.6%0.7%
October 202528286.5%9.9%0.0%
November 202523979.5%14.2%1.3%
December 202523263.4%27.6%3.4%
January 202621968.5%18.7%6.8%
February 202621273.6%13.7%5.7%
March 202622080.9%8.6%5.5%
April 202623381.5%11.6%0.9%
May 202624883.5%10.1%2.8%
June 202625175.3%13.1%5.6%

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.

Airline37.1%
Late aircraft42.5%
National airspace15.3%
Weather5.0%
Security0.1%
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.