Flight OO4320
SkyWest Airlines flight OO4320
Looking for OO4320 in the air…
Salt Lake City (SLC) to West Yellowstone (WYS)
Historically, this flight arrives 15+ minutes late 8% of the time, and when it is late the delay averages 86 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 91.9%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 86 min
- Flights arriving 15+ minutes late
- Flights tracked
- 102
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 80%
- Extreme weather 20%
- Air traffic control & airport 0%
- Late-arriving aircraft 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
West Yellowstone (WYS) to Salt Lake City (SLC)
Historically, this flight arrives 15+ minutes late 11% of the time, and when it is late the delay averages 93 minutes. It was cancelled 1.0% of the time.
- On-time arrivals
- 89.1%
- Less than 15 minutes late
- Cancelled
- 1.0%
- Of scheduled flights
- Average delay when late
- 93 min
- Flights arriving 15+ minutes late
- Flights tracked
- 102
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 58%
- Extreme weather 39%
- Air traffic control & airport 3%
- Late-arriving aircraft 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| May 2026 | 89.5% | 20 |
| June 2026 | 91.2% | 60 |
| July 2026 | 90.3% | 62 |
| August 2026 | 90.3% | 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