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

Chicago, IL (MDW) to Philadelphia, PA (PHL) flight delay odds

74.4% of 1,525 official scheduled MDW-to-PHL flights arrived on time; 14.6% arrived at least 30 minutes late and 1.4% were cancelled during July 2025–June 2026.

Source: U.S. Bureau of Transportation Statistics · Reporting window: July 2025–June 2026 · Updated September 16, 2026

HISTORICAL ROUTE SIGNALGenerally reliable
74.4%arrived on time
14.6%30+ min late
1.4%cancelled
1,525scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late6.4%all scheduled flights
120+ minutes late3.2%all scheduled flights
Diverted0.2%did not reach as scheduled
Average arrival+9.9 mincompleted flights

Which departure time was most reliable for MDW to PHL?

Among qualifying MDW-to-PHL departure window results, Early morning had the highest on-time rate: 88.3% of 299 flights. Night was lowest at 45.5% across 55 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning29988.3%4.7%1.0%
Late morning28886.8%6.9%1.4%
Afternoon55668.2%18.5%1.3%
Evening32766.4%19.3%1.8%
Night5545.5%41.8%3.6%

Which weekday was most reliable for MDW to PHL?

Among qualifying MDW-to-PHL weekday results, Saturday had the highest on-time rate: 81.4% of 167 flights. Sunday was lowest at 67.8% across 230 flights.

DayFlightsOn time30+ minCancelled
Monday23672.0%17.8%1.3%
Tuesday21879.8%11.0%0.5%
Wednesday21373.7%15.5%1.4%
Thursday22669.9%15.5%0.9%
Friday23578.3%13.2%0.4%
Saturday16781.4%8.4%1.8%
Sunday23067.8%19.1%3.9%

Which airline was most reliable for MDW to PHL?

Among qualifying MDW-to-PHL airline results, Frontier Airlines had the highest on-time rate: 77.6% of 76 flights. Southwest Airlines was lowest at 74.3% across 1,449 flights.

AirlineFlightsOn time30+ minCancelled
Southwest Airlines1,44974.3%14.7%1.4%
Frontier Airlines7677.6%13.2%2.6%

Which month was most reliable for MDW to PHL?

Among qualifying MDW-to-PHL month results, April 2026 had the highest on-time rate: 85.6% of 111 flights. July 2025 was lowest at 61.4% across 153 flights.

MonthFlightsOn time30+ minCancelled
July 202515361.4%28.1%2.6%
August 202515575.5%15.5%0.6%
September 202515982.4%7.5%0.0%
October 202515581.9%9.7%0.0%
November 202513677.2%8.1%5.1%
December 202512266.4%25.4%0.0%
January 20269677.1%13.5%3.1%
February 20268475.0%7.1%3.6%
March 20269364.5%20.4%2.2%
April 202611185.6%8.1%0.0%
May 202611968.9%16.0%0.0%
June 202614274.6%14.8%1.4%

What drove MDW to PHL delay minutes?

Late aircraft was the largest recorded MDW-to-PHL delay category, accounting for 36.8% of 22,311 BTS-attributed delay minutes during July 2025–June 2026.

Airline27.7%
Late aircraft36.8%
National airspace25.2%
Weather9.2%
Security1.1%
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.