PHL to ORD flight delays & on-time performance
Nonstop flights from Philadelphia International Airport to Chicago O'Hare International Airport · 678 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at PHL or ORD right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Philadelphia (PHL) to Chicago (ORD) arrived on time 73% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 3.4% were cancelled, and 11% arrived an hour or more late.
- American Airlines was the most punctual airline here (74% on time); United Airlines was the least (74%).
- Departures scheduled around 6am did best (87% on time); around 6pm did worst (53%).
- Tuesday was the most reliable day to fly (78% on time) and Sunday the least (68%).
- The largest source of delay minutes was late-arriving aircraft (37%).
Which airline is most on time from PHL to ORD?
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 |
|---|---|---|---|---|---|
| Republic AirwaysRegional airline operating flights for American Eagle, Delta Connection and United Express. | 92% | 0.0% | 4 min | 3.8% | 26 |
| American Airlines | 74% | 4.0% | 26 min | 11.8% | 2,973 |
| United Airlines | 74% | 2.2% | 28 min | 9.8% | 1,810 |
| Frontier Airlines | 57% | 5.2% | 55 min | 23.0% | 193 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 5am89%97 flights
- 6am87%452 flights
- 7am81%358 flights
- 8am77%290 flights
- 9am82%224 flights
- 10am82%626 flights
- 11am80%139 flights
- 12pm76%468 flights
- 1pm77%287 flights
- 2pm75%152 flights
- 3pm64%255 flights
- 4pm71%221 flights
- 5pm61%526 flights
- 6pm53%354 flights
- 7pm57%259 flights
- 9pm64%150 flights
- 11pm64%66 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday73%6.6% cancelled
- Tuesday78%2.9% cancelled
- Wednesday78%2.0% cancelled
- Thursday71%2.2% cancelled
- Friday72%1.9% cancelled
- Saturday73%3.1% cancelled
- Sunday68%5.0% 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 aircraft37%
- Air traffic control & airport congestion36%
- Airline (crew, maintenance, cleaning, fueling)22%
- Extreme weather4%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather79%
- Airline (crew, maintenance, cleaning, fueling)12%
- Air traffic control & airport congestion9%
- Security0%
PHL to ORD: common questions
- How often are PHL to ORD flights on time?
- 73% 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 Philadelphia to Chicago cancelled?
- 3.4% of scheduled flights were cancelled (170 of 5,002).
- How long are typical delays?
- Across all flights the average arrival delay was 28 min (early arrivals count as zero). Flights that were late arrived 101 min behind schedule on average, and 11.5% of flights were an hour or more late.
- How long is taxi time at PHL?
- Flights on this route spent 21 min taxiing from the gate to takeoff on average.
Related routes
Return trip: ORD to PHL — 72% on time
More flights from Philadelphia
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: PHL → ORD, nonstop flights by US airlines that report to the DOT. How we calculate this.