Chicago (ORD) to Phoenix (PHX): On-Time Performance
Data through July 2026
Chicago (ORD) to Phoenix (PHX) effectively runs on two schedules. In October 2024, 89% of arrivals were on time; in June 2026 that fell to 62% — a 27-point seasonal swing. Across the full period the route averages 77% on-time against a national 78%. Morning departures also hold up better than evening ones (84% vs 67%), which matters most in the rough months.
- On-time
- 77%
- arrived <15 min late
- Avg delay
- 19 min
- completed flights
- Cancelled
- 1.2%
- Flights/day
- 15
- last 12 months
- Duration
- 3h 56m
- scheduled
- Distance
- 1,440 mi
Best airline from ORD to PHX
4 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| United Airlinesmost reliable | 82% | 12 min | 0.6% | 4,066 |
| American Airlines | 75% | 22 min | 1.5% | 6,275 |
| Southwest Airlines | 67% | 22 min | 1.1% | 876 |
| Frontier Airlines | 66% | 31 min | 3.2% | 465 |
Monthly on-time trend
Best time to fly from ORD to PHX
Aim for departures around 6 a.m. (93% on-time); avoid 10 p.m. departures (58%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 74% | 23 min |
| Tuesdaybest | 81% | 18 min |
| Wednesday | 78% | 17 min |
| Thursday | 76% | 19 min |
| Friday | 74% | 23 min |
| Saturday | 80% | 15 min |
| Sunday | 75% | 19 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft50%
- Airline operations32%
- National airspace system14%
- Weather5%
Frequently asked questions
- How often are flights from ORD to PHX delayed?
- 23% of ORD–PHX 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 19 minutes.
- Which airline is most reliable from ORD to PHX?
- United Airlines has the best on-time record on this route at 82%, based on 4,066 flights. 4 airlines flew ORD–PHX frequently enough to compare in this period.
- What is the best time of day to fly from ORD to PHX?
- Departures around 6 a.m. have the best record (93% on-time), while departures around 10 p.m. have the worst (58%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from ORD to PHX?
- The scheduled ORD–PHX flight time averages 3h 56m over 1,440 miles. Actual arrival times vary — flights on this route land 15+ minutes late 23% of the time.
- How often are ORD to PHX flights cancelled?
- 1.2% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
- What is the worst month to fly from ORD to PHX?
- June 2026 was the roughest month in this dataset, with only 62% of arrivals on time. The best was October 2024 at 89%. If your dates are flexible, that 27-point gap is worth planning around.
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Based on 11,682 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.