Flight OO4721
SkyWest Airlines flight OO4721
Looking for OO4721 in the air…
Pasco (PSC) to Denver (DEN)
Historically, this flight arrives 15+ minutes late 13% of the time, and when it is late the delay averages 85 minutes. It was cancelled 0.3% of the time.
- On-time arrivals
- 87.1%
- Less than 15 minutes late
- Cancelled
- 0.3%
- Of scheduled flights
- Average delay when late
- 85 min
- Flights arriving 15+ minutes late
- Flights tracked
- 363
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 35%
- Air traffic control & airport 33%
- Late-arriving aircraft 23%
- Extreme weather 9%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Denver (DEN) to Williston (XWA)
Historically, this flight arrives 15+ minutes late 53% of the time, and when it is late the delay averages 76 minutes. It was cancelled 8.6% of the time.
- On-time arrivals
- 46.9%
- Less than 15 minutes late
- Cancelled
- 8.6%
- Of scheduled flights
- Average delay when late
- 76 min
- Flights arriving 15+ minutes late
- Flights tracked
- 35
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 45%
- Late-arriving aircraft 30%
- Extreme weather 17%
- Airline (crew, maintenance, cleaning) 8%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 93.3% | 30 |
| October 2025 | 93.5% | 31 |
| November 2025 | 100.0% | 29 |
| December 2025 | 93.5% | 31 |
| January 2026 | 83.9% | 31 |
| February 2026 | 75.0% | 28 |
| March 2026 | 80.0% | 31 |
| April 2026 | 70.0% | 30 |
| May 2026 | 83.3% | 42 |
| June 2026 | 82.9% | 36 |
| July 2026 | 89.3% | 30 |
| August 2026 | 68.2% | 49 |
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