Flight OO3440
SkyWest Airlines flight OO3440
Looking for OO3440 in the air…
Alerts at this flight's airports
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Advisory Airport Closure SNA
Airport Closure at John Wayne Orange County International Airport (SNA): Reopens Nov 08 at 14:15 UTC.
Airport status
San Francisco (SFO) to Santa Ana (SNA)
Historically, this flight arrives 15+ minutes late 8% of the time, and when it is late the delay averages 61 minutes. It was cancelled 3.2% of the time.
- On-time arrivals
- 92.4%
- Less than 15 minutes late
- Cancelled
- 3.2%
- Of scheduled flights
- Average delay when late
- 61 min
- Flights arriving 15+ minutes late
- Flights tracked
- 217
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 51%
- Airline (crew, maintenance, cleaning) 38%
- Late-arriving aircraft 11%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Santa Ana (SNA) to San Francisco (SFO)
Historically, this flight arrives 15+ minutes late 45% of the time, and when it is late the delay averages 73 minutes. It was cancelled 1.7% of the time.
- On-time arrivals
- 55.1%
- Less than 15 minutes late
- Cancelled
- 1.7%
- Of scheduled flights
- Average delay when late
- 73 min
- Flights arriving 15+ minutes late
- Flights tracked
- 173
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 70%
- Airline (crew, maintenance, cleaning) 27%
- Late-arriving aircraft 3%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Seattle (SEA) to Portland (PDX)
Historically, this flight arrives 15+ minutes late 21% of the time, and when it is late the delay averages 58 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 79.3%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 58 min
- Flights arriving 15+ minutes late
- Flights tracked
- 29
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 32%
- Airline (crew, maintenance, cleaning) 30%
- Air traffic control & airport 21%
- Extreme weather 17%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 80.8% | 26 |
| October 2025 | 76.7% | 30 |
| November 2025 | 84.8% | 50 |
| December 2025 | 71.8% | 43 |
| January 2026 | 85.3% | 36 |
| February 2026 | 86.0% | 43 |
| March 2026 | 89.8% | 59 |
| April 2026 | 59.0% | 42 |
| May 2026 | 55.9% | 38 |
| June 2026 | 61.1% | 41 |
| August 2026 | 90.9% | 11 |
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