Route
STS → PDX
Charles M. Schulz Sonoma County Airport Portland International Airport
489 miles
Return route PDX → STS →
Alerts at STS and PDX
How punctual is this route?
- On-time arrivals
- 90.5%
- Less than 15 minutes late
- Cancelled
- 1.6%
- Of scheduled flights
- Average delay when late
- 73 min
- Flights arriving 15+ minutes late
- Flights tracked
- 624
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 63%
- Airline (crew, maintenance, cleaning) 20%
- Air traffic control & airport 13%
- Extreme weather 5%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Sep 2025
Aug 2026
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 95.0% | 60 |
| October 2025 | 97.2% | 36 |
| November 2025 | 89.7% | 59 |
| December 2025 | 73.8% | 44 |
| January 2026 | 92.9% | 48 |
| February 2026 | 86.7% | 31 |
| March 2026 | 97.8% | 45 |
| April 2026 | 88.0% | 50 |
| May 2026 | 88.6% | 70 |
| June 2026 | 93.4% | 61 |
| July 2026 | 98.4% | 62 |
| August 2026 | 82.8% | 58 |
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 |
|---|---|---|---|---|
| SkyWest Airlines | 598 | 90.4% | 0.5% | 70 min |
| Alaska Airlines | 26 | 94.7% | 26.9% | 272 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
Reviews
No reviews yet. Be the first to review this route.