Chicago (ORD) to Pittsburgh (PIT): On-Time Performance
Data through July 2026
Chicago (ORD) to Pittsburgh (PIT) effectively runs on two schedules. In September 2025, 85% of arrivals were on time; in March 2026 that fell to 60% — a 26-point seasonal swing. Across the full period the route averages 76% on-time against a national 78%. Morning departures also hold up better than evening ones (85% vs 70%), which matters most in the rough months.
- On-time
- 76%
- arrived <15 min late
- Avg delay
- 20 min
- completed flights
- Cancelled
- 1.7%
- Flights/day
- 11
- last 12 months
- Duration
- 1h 37m
- scheduled
- Distance
- 413 mi
Best airline from ORD to PIT
5 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Republic Airwaysmost reliable | 82% | 15 min | 1.9% | 2,703 |
| Envoy Air | 81% | 11 min | 1.0% | 679 |
| United Airlines | 78% | 16 min | 0.9% | 2,611 |
| SkyWest Airlines | 67% | 24 min | 2.6% | 348 |
| American Airlines | 60% | 44 min | 2.8% | 1,208 |
Monthly on-time trend
Best time to fly from ORD to PIT
Aim for departures around 7 a.m. (88% on-time); avoid 8 p.m. departures (60%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 74% | 24 min |
| Tuesdaybest | 82% | 14 min |
| Wednesday | 78% | 16 min |
| Thursday | 76% | 19 min |
| Friday | 73% | 22 min |
| Saturday | 79% | 19 min |
| Sunday | 73% | 24 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft51%
- Airline operations28%
- National airspace system14%
- Weather7%
Frequently asked questions
- How often are flights from ORD to PIT delayed?
- 24% of ORD–PIT flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 20 minutes.
- Which airline is most reliable from ORD to PIT?
- Republic Airways has the best on-time record on this route at 82%, based on 2,703 flights. 5 airlines flew ORD–PIT frequently enough to compare in this period.
- What is the best time of day to fly from ORD to PIT?
- Departures around 7 a.m. have the best record (88% on-time), while departures around 8 p.m. have the worst (60%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from ORD to PIT?
- The scheduled ORD–PIT flight time averages 1h 37m over 413 miles. Actual arrival times vary — flights on this route land 15+ minutes late 24% of the time.
- How often are ORD to PIT flights cancelled?
- 1.7% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, slightly above the national rate of 1.6%.
- What is the worst month to fly from ORD to PIT?
- March 2026 was the roughest month in this dataset, with only 60% of arrivals on time. The best was September 2025 at 85%. If your dates are flexible, that 26-point gap is worth planning around.
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Based on 7,549 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.