PHX to DEN flight delays & on-time performance
Nonstop flights from Phoenix Sky Harbor International Airport to Denver International Airport · 602 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at PHX or DEN right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Phoenix (PHX) to Denver (DEN) arrived on time 77% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 0.6% were cancelled, and 8% arrived an hour or more late.
- United Airlines was the most punctual airline here (84% on time); Southwest Airlines was the least (73%).
- Departures scheduled around 6am did best (93% on time); around 5pm did worst (64%).
- Saturday was the most reliable day to fly (82% on time) and Sunday the least (74%).
- The largest source of delay minutes was late-arriving aircraft (48%).
Which airline is most on time from PHX to DEN?
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. | 84% | 0.6% | 8 min | 4.0% | 175 |
| United Airlines | 84% | 0.6% | 13 min | 6.2% | 2,363 |
| Frontier Airlines | 80% | 0.7% | 19 min | 7.7% | 1,464 |
| American Airlines | 75% | 0.8% | 19 min | 10.1% | 987 |
| Southwest Airlines | 73% | 0.6% | 16 min | 8.1% | 3,937 |
| SkyWest AirlinesRegional airline operating flights for United Express, Delta Connection, American Eagle and Alaska. | 67% | 0.0% | 33 min | 27.8% | 18 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 5am96%232 flights
- 6am93%763 flights
- 7am90%533 flights
- 8am86%693 flights
- 9am84%732 flights
- 10am83%376 flights
- 11am81%414 flights
- 12pm83%651 flights
- 1pm73%580 flights
- 2pm66%429 flights
- 3pm65%639 flights
- 4pm67%822 flights
- 5pm64%327 flights
- 6pm67%607 flights
- 7pm76%462 flights
- 8pm66%289 flights
- 9pm65%277 flights
- 10pm76%117 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday77%0.7% cancelled
- Tuesday79%0.3% cancelled
- Wednesday78%0.7% cancelled
- Thursday76%0.4% cancelled
- Friday76%1.2% cancelled
- Saturday82%0.6% cancelled
- Sunday74%0.5% 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 aircraft48%
- Airline (crew, maintenance, cleaning, fueling)25%
- Air traffic control & airport congestion24%
- Extreme weather2%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Airline (crew, maintenance, cleaning, fueling)40%
- Extreme weather31%
- Air traffic control & airport congestion29%
- Security0%
PHX to DEN: common questions
- How often are PHX to DEN flights on time?
- 77% 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 Phoenix to Denver cancelled?
- 0.6% of scheduled flights were cancelled (58 of 8,944).
- How long are typical delays?
- Across all flights the average arrival delay was 16 min (early arrivals count as zero). Flights that were late arrived 66 min behind schedule on average, and 7.7% of flights were an hour or more late.
- How long is taxi time at PHX?
- Flights on this route spent 16 min taxiing from the gate to takeoff on average.
Related routes
Return trip: DEN to PHX — 76% on time
More flights from Phoenix
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: PHX → DEN, nonstop flights by US airlines that report to the DOT. How we calculate this.