Flight OO4021
SkyWest Airlines flight OO4021
Looking for OO4021 in the airโฆ
Salt Lake City (SLC) to Boise (BOI)
Historically, this flight arrives 15+ minutes late 10% of the time, and when it is late the delay averages 56 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 90.2%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 56 min
- Flights arriving 15+ minutes late
- Flights tracked
- 102
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 67%
- Extreme weather 28%
- Air traffic control & airport 5%
- Late-arriving aircraft 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Atlanta (ATL) to Charleston (CRW)
Historically, this flight arrives 15+ minutes late 45% of the time, and when it is late the delay averages 78 minutes. It was cancelled 8.1% of the time.
- On-time arrivals
- 54.5%
- Less than 15 minutes late
- Cancelled
- 8.1%
- Of scheduled flights
- Average delay when late
- 78 min
- Flights arriving 15+ minutes late
- Flights tracked
- 37
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 39%
- Air traffic control & airport 37%
- Extreme weather 24%
- Late-arriving aircraft 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Buffalo (BUF) to Detroit (DTW)
Historically, this flight arrives 15+ minutes late 10% of the time, and when it is late the delay averages 166 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 90.3%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 166 min
- Flights arriving 15+ minutes late
- Flights tracked
- 31
- Scheduled flights in the period
What caused the delays
- Extreme weather 94%
- Airline (crew, maintenance, cleaning) 6%
- Late-arriving aircraft 0%
- Air traffic control & airport 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Detroit (DTW) to Buffalo (BUF)
Historically, this flight arrives 15+ minutes late 3% of the time, and when it is late the delay averages 157 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 96.8%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 157 min
- Flights arriving 15+ minutes late
- Flights tracked
- 31
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 100%
- Late-arriving aircraft 0%
- Air traffic control & airport 0%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Detroit (DTW) to Traverse City (TVC)
Historically, this flight arrives 15+ minutes late 4% of the time, and when it is late the delay averages 85 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 96.2%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 85 min
- Flights arriving 15+ minutes late
- Flights tracked
- 26
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 100%
- Late-arriving aircraft 0%
- Air traffic control & airport 0%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Traverse City (TVC) to Detroit (DTW)
Historically, this flight arrives 15+ minutes late 4% of the time, and when it is late the delay averages 58 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 96.2%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 58 min
- Flights arriving 15+ minutes late
- Flights tracked
- 26
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 100%
- Late-arriving aircraft 0%
- Air traffic control & airport 0%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Minneapolis (MSP) to Cedar Rapids (CID)
Historically, this flight arrives 15+ minutes late 39% of the time, and when it is late the delay averages 185 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 60.9%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 185 min
- Flights arriving 15+ minutes late
- Flights tracked
- 23
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 82%
- Extreme weather 13%
- Air traffic control & airport 5%
- Late-arriving aircraft 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Madison (MSN) to Minneapolis (MSP)
Only 5 flights on record, which is too few for reliable odds.
- On-time arrivals
- 60.0%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 59 min
- Flights arriving 15+ minutes late
- Flights tracked
- 5
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 62%
- Air traffic control & airport 38%
- Late-arriving aircraft 0%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Minneapolis (MSP) to Madison (MSN)
Only 5 flights on record, which is too few for reliable odds.
- On-time arrivals
- 60.0%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 48 min
- Flights arriving 15+ minutes late
- Flights tracked
- 5
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 83%
- Air traffic control & airport 17%
- Late-arriving aircraft 0%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
In the news
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City Council backs $55 million in new Hartsfield-Jackson funding as construction projects multiply
The Business Journals ATL
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Over 400 flights cancelled due to severe weather at Hartsfield-Jackson Atlanta International Airport, Georgia
The Watchers - Watching the world evolve and transform ATL
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Hartsfield-Jackson Atlanta International Airport
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Headlines found by Google News; stories open on the publisher's site.
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 84.6% | 26 |
| October 2025 | 100.0% | 30 |
| November 2025 | 85.2% | 27 |
| December 2025 | 89.5% | 19 |
| January 2026 | 39.1% | 27 |
| February 2026 | 90.0% | 10 |
| March 2026 | 33.3% | 6 |
| April 2026 | 68.2% | 22 |
| May 2026 | 89.1% | 55 |
| June 2026 | 100.0% | 54 |
| July 2026 | 80.0% | 10 |
Source: U.S. DOT Bureau of Transportation Statistics on-time data, September 2025 โ August 2026. Covers flights operated by reporting U.S. carriers. About our data