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Route Reliability

Chicago → Philadelphia

MDW–PHL · 668 miles · Chicago Midway International Airport to Philadelphia International Airport

78
Usually Fine
WanderNerd Reliability Score
76%
Arrive within 15 minutes
11 min
Average arrival delay
1.3%
Cancelled
1,530
Flights in the data

Data through May 2026.

Airlines on this route

  • Southwest Airlines76% on time · 1,445 flights
  • Frontier Airlines76% on time · 85 flights

Too little history on this route to call a winner. We rank airlines only after 100 flights each.

What the data says

Morning-you made the right choice.

MDW–PHL flights departing between 6–9 AM arrived on time 90% of the time, versus 47% between 9 PM–12 AM.

Thursdays have been rough.

MDW–PHL flights arrived on time 86% of the time on Saturdays and just 69% on Thursdays. That gap is worth planning around.

Flights on this route

The breakdown

On-time by weekday
  • Mon72%(238 flights)
  • Tue80%(211 flights)
  • Wed79%(211 flights)
  • Thu69%(225 flights)
  • Fri78%(238 flights)
  • Sat86%(160 flights)
  • Sun70%(225 flights)
On-time by departure window
  • 3–6 AM—(2 flights)
  • 6–9 AM90%(293 flights)
  • 9 AM–12 PM87%(282 flights)
  • 12–3 PM75%(385 flights)
  • 3–6 PM59%(208 flights)
  • 6–9 PM69%(268 flights)
  • 9 PM–12 AM47%(70 flights)
On-time trend by month
71%
May

Jun 66% → May 71% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202566%147
July 202564%149
August 202580%153
September 202584%159
October 202583%155
November 202581%129
December 202567%122
January 202681%93
February 202679%81
March 202667%91
April 202686%110
May 202671%119

Same trip, other airports

Keep nerding

Based on 1,530 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.