Phoenix (PHX) to Chicago (ORD): On-Time Performance
Data through May 2026
When you fly PHX to ORD matters as much as anything else about the booking: the route swung from 92% on-time in November 2024 to just 66% in July 2024. Across the full period the route averages 79% on-time against a national 78%. Morning departures also hold up better than evening ones (86% vs 77%), which matters most in the rough months.
- On-time
- 79%
- arrived <15 min late
- Avg delay
- 16 min
- completed flights
- Cancelled
- 1.1%
- Flights/day
- 15
- last 12 months
- Duration
- 3h 33m
- scheduled
- Distance
- 1,440 mi
Best airline from PHX to ORD
4 airlines flew this route regularly between 2024-06 and 2026-05.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| United Airlinesmost reliable | 82% | 14 min | 0.6% | 3,917 |
| American Airlines | 81% | 14 min | 1.3% | 5,963 |
| Southwest Airlines | 67% | 21 min | 0.6% | 924 |
| Frontier Airlines | 67% | 36 min | 3.5% | 482 |
Monthly on-time trend
Best time to fly from PHX to ORD
Aim for departures around 5 a.m. (94% on-time); avoid 8 p.m. departures (66%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 78% | 18 min |
| Tuesday | 81% | 14 min |
| Wednesday | 81% | 14 min |
| Thursday | 79% | 15 min |
| Friday | 78% | 18 min |
| Saturdaybest | 82% | 14 min |
| Sunday | 78% | 17 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft39%
- Airline operations33%
- National airspace system27%
- Weather2%
Frequently asked questions
- How often are flights from PHX to ORD delayed?
- 21% of PHX–ORD flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-06 and 2026-05. The average arrival delay across completed flights was 16 minutes.
- Which airline is most reliable from PHX to ORD?
- United Airlines has the best on-time record on this route at 82%, based on 3,917 flights. 4 airlines flew PHX–ORD frequently enough to compare in this period.
- What is the best time of day to fly from PHX to ORD?
- Departures around 5 a.m. have the best record (94% on-time), while departures around 8 p.m. have the worst (66%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from PHX to ORD?
- The scheduled PHX–ORD flight time averages 3h 33m over 1,440 miles. Actual arrival times vary — flights on this route land 15+ minutes late 21% of the time.
- How often are PHX to ORD flights cancelled?
- 1.1% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, at or below the national rate of 1.6%.
- What is the worst month to fly from PHX to ORD?
- July 2024 was the roughest month in this dataset, with only 66% of arrivals on time. The best was November 2024 at 92%. If your dates are flexible, that 26-point gap is worth planning around.
Explore related pages
More routes from PHX
Based on 11,286 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.