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Route Reliability

Chicago → MDT

ORD–MDT · 594 miles · Chicago O'Hare International Airport to MDT Airport

69
Usually Fine
WanderNerd Reliability Score
73%
Arrive within 15 minutes
13 min
Average arrival delay
2.7%
Cancelled
2,600
Flights in the data

Data through May 2026.

Who flies it best

Ranked by on-time arrivals. Historical results, not predictions.

  1. 1.American Airlines75%1,114 flights
  2. 2.United Airlines72%1,486 flights

What the data says

Morning-you made the right choice.

ORD–MDT flights departing between 6–9 AM arrived on time 79% of the time, versus 66% between 6–9 PM.

Sunday scaries are real for this one.

ORD–MDT flights arrived on time 77% of the time on Saturdays. On Sundays: 69%.

American Airlines has a slight edge here.

American Airlines arrived on time 75% of the time on this route; United Airlines managed 72%.

Best historical flights

Ranked by on-time arrivals, minimum 100 flights. Past performance, not a promise.

Top flights by on-time rate

More flights on this route

The breakdown

On-time by weekday
  • Mon69%(374 flights)
  • Tue75%(349 flights)
  • Wed76%(348 flights)
  • Thu74%(373 flights)
  • Fri72%(371 flights)
  • Sat77%(333 flights)
  • Sun69%(380 flights)
On-time by departure window
  • 6–9 AM79%(608 flights)
  • 9 AM–12 PM75%(209 flights)
  • 12–3 PM75%(572 flights)
  • 3–6 PM71%(440 flights)
  • 6–9 PM66%(606 flights)
  • 9 PM–12 AM76%(93 flights)
On-time trend by month
79%
May

Jun 70% → May 79% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202570%209
July 202566%208
August 202575%194
September 202582%181
October 202578%227
November 202579%212
December 202567%210
January 202669%173
February 202673%181
March 202669%201
April 202670%263
May 202679%269

Keep nerding

Based on 2,600 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.