Flight OO4439
SkyWest Airlines flight OO4439
Looking for OO4439 in the air…
Sacramento (SMF) to Seattle (SEA)
Historically, this flight arrives 15+ minutes late 8% of the time, and when it is late the delay averages 120 minutes. It was cancelled 1.6% of the time.
- On-time arrivals
- 91.7%
- Less than 15 minutes late
- Cancelled
- 1.6%
- Of scheduled flights
- Average delay when late
- 120 min
- Flights arriving 15+ minutes late
- Flights tracked
- 122
- Scheduled flights in the period
What caused the delays
- Extreme weather 56%
- Airline (crew, maintenance, cleaning) 41%
- Air traffic control & airport 3%
- Late-arriving aircraft 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Jan 2026
May 2026
Show as table
| Month | On time | Flights |
|---|---|---|
| January 2026 | 84.6% | 27 |
| February 2026 | 96.4% | 28 |
| March 2026 | 90.0% | 31 |
| April 2026 | 93.3% | 30 |
| May 2026 | 100.0% | 6 |
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