Route
STS → PHX
Charles M. Schulz Sonoma County Airport Phoenix Sky Harbor International Airport
Alerts at STS and PHX
How punctual is this route?
- On-time arrivals
- 75.2%
- Less than 15 minutes late
- Cancelled
- 0.4%
- Of scheduled flights
- Average delay when late
- 76 min
- Flights arriving 15+ minutes late
- Flights tracked
- 693
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 64%
- Airline (crew, maintenance, cleaning) 19%
- Air traffic control & airport 14%
- Extreme weather 3%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 81.5% | 56 |
| October 2025 | 68.9% | 61 |
| November 2025 | 76.0% | 51 |
| December 2025 | 75.0% | 48 |
| January 2026 | 77.4% | 62 |
| February 2026 | 94.5% | 55 |
| March 2026 | 83.9% | 62 |
| April 2026 | 83.9% | 56 |
| May 2026 | 72.9% | 59 |
| June 2026 | 57.6% | 60 |
| July 2026 | 60.7% | 61 |
| August 2026 | 72.6% | 62 |
Source: U.S. DOT Bureau of Transportation Statistics on-time data, September 2025 – August 2026. Covers flights operated by reporting U.S. carriers. About our data
Airlines on this route
| Airline | Flights | On time | Cancelled | Avg. delay when late |
|---|---|---|---|---|
| Envoy Air | 404 | 78.8% | 0.5% | 60 min |
| SkyWest Airlines | 288 | 70.0% | 0.3% | 92 min |
| American Airlines | 1 | 100.0% | 0.0% | — |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
OO6459
22% late · 102 flights
-
MQ3407
18% late · 98 flights
-
MQ4115
26% late · 81 flights
-
MQ4126
15% late · 53 flights
-
OO6448
20% late · 44 flights
-
OO6361
59% late · 42 flights
-
OO6402
16% late · 38 flights
-
MQ3514
52% late · 33 flights
-
OO6437
39% late · 33 flights
-
MQ3716
13% late · 30 flights
-
MQ3757
0% late · 30 flights
-
MQ4078
26% late · 27 flights
-
MQ4114
33% late · 27 flights
-
OO4989
44% late · 27 flights
-
MQ4163
0% late · 24 flights
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