ORD to PHX flight delays & on-time performance
Nonstop flights from Chicago O'Hare International Airport to Phoenix Sky Harbor International Airport · 1,440 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at ORD or PHX 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 Phoenix (PHX) arrived on time 73% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 1.8% were cancelled, and 10% arrived an hour or more late.
- United Airlines was the most punctual airline here (79% on time); Southwest Airlines was the least (60%).
- Departures scheduled around 5am did best (86% on time); around 2pm did worst (58%).
- Saturday was the most reliable day to fly (77% on time) and Sunday the least (69%).
- The largest source of delay minutes was late-arriving aircraft (49%).
Which airline is most on time from ORD to PHX?
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 |
|---|---|---|---|---|---|
| United Airlines | 79% | 0.7% | 15 min | 7.5% | 1,968 |
| American Airlines | 71% | 2.2% | 26 min | 11.5% | 2,994 |
| Frontier Airlines | 69% | 4.1% | 27 min | 11.8% | 195 |
| Southwest Airlines | 60% | 2.3% | 29 min | 13.2% | 429 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 5am86%287 flights
- 7am84%603 flights
- 8am81%141 flights
- 9am81%472 flights
- 10am73%260 flights
- 11am80%348 flights
- 12pm82%325 flights
- 1pm79%411 flights
- 2pm58%301 flights
- 3pm68%465 flights
- 4pm70%342 flights
- 5pm66%328 flights
- 6pm68%174 flights
- 7pm65%380 flights
- 8pm61%438 flights
- 9pm63%138 flights
- 10pm54%152 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday69%3.2% cancelled
- Tuesday76%1.6% cancelled
- Wednesday75%0.9% cancelled
- Thursday75%1.5% cancelled
- Friday70%1.7% cancelled
- Saturday77%1.9% cancelled
- Sunday69%1.6% 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 aircraft49%
- Airline (crew, maintenance, cleaning, fueling)31%
- Air traffic control & airport congestion15%
- Extreme weather5%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather77%
- Air traffic control & airport congestion14%
- Airline (crew, maintenance, cleaning, fueling)9%
- Security0%
ORD to PHX: common questions
- How often are ORD to PHX 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 Chicago to Phoenix cancelled?
- 1.8% of scheduled flights were cancelled (99 of 5,586).
- How long are typical delays?
- Across all flights the average arrival delay was 23 min (early arrivals count as zero). Flights that were late arrived 80 min behind schedule on average, and 10.2% of flights were an hour or more late.
- How long is taxi time at ORD?
- Flights on this route spent 25 min taxiing from the gate to takeoff on average.
Related routes
Return trip: PHX to ORD — 76% 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 → PHX, nonstop flights by US airlines that report to the DOT. How we calculate this.