ORD to PIT flight delays & on-time performance
Nonstop flights from Chicago O'Hare International Airport to Pittsburgh International Airport · 413 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at ORD or PIT right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Chicago (ORD) to Pittsburgh (PIT) arrived on time 75% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 2.3% were cancelled, and 10% arrived an hour or more late.
- Republic Airways was the most punctual airline here (81% on time); American Airlines was the least (55%).
- Departures scheduled around 7am did best (86% on time); around 5pm did worst (59%).
- Tuesday was the most reliable day to fly (81% on time) and Monday the least (70%).
- The largest source of delay minutes was late-arriving aircraft (51%).
Which airline is most on time from ORD to PIT?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| Envoy AirRegional airline operating American Eagle flights. | 83% | 2.2% | 12 min | 5.5% | 186 |
| Republic AirwaysRegional airline operating flights for American Eagle, Delta Connection and United Express. | 81% | 2.5% | 16 min | 7.7% | 1,674 |
| United Airlines | 75% | 1.3% | 18 min | 8.8% | 1,294 |
| SkyWest AirlinesRegional airline operating flights for United Express, Delta Connection, American Eagle and Alaska. | 69% | 3.3% | 22 min | 9.4% | 242 |
| American Airlines | 55% | 3.1% | 46 min | 21.6% | 604 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 7am86%351 flights
- 8am85%206 flights
- 9am83%238 flights
- 10am79%373 flights
- 12pm83%388 flights
- 1pm80%132 flights
- 2pm73%443 flights
- 3pm70%308 flights
- 4pm56%54 flights
- 5pm59%167 flights
- 6pm64%635 flights
- 7pm78%68 flights
- 8pm55%111 flights
- 9pm77%487 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday70%4.1% cancelled
- Tuesday81%1.0% cancelled
- Wednesday76%1.4% cancelled
- Thursday75%1.5% cancelled
- Friday74%1.7% cancelled
- Saturday77%3.3% cancelled
- Sunday72%2.7% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Late-arriving aircraft51%
- Airline (crew, maintenance, cleaning, fueling)25%
- Air traffic control & airport congestion14%
- Extreme weather9%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather67%
- Air traffic control & airport congestion29%
- Airline (crew, maintenance, cleaning, fueling)4%
- Security0%
ORD to PIT: common questions
- How often are ORD to PIT flights on time?
- 75% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Chicago to Pittsburgh cancelled?
- 2.3% of scheduled flights were cancelled (90 of 4,000).
- How long are typical delays?
- Across all flights the average arrival delay was 21 min (early arrivals count as zero). Flights that were late arrived 80 min behind schedule on average, and 10.1% of flights were an hour or more late.
- How long is taxi time at ORD?
- Flights on this route spent 27 min taxiing from the gate to takeoff on average.
Related routes
Return trip: PIT to ORD — 79% on time
More flights from Chicago
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: ORD → PIT, nonstop flights by US airlines that report to the DOT. How we calculate this.