Flight OO5521
SkyWest Airlines flight OO5521
Looking for OO5521 in the air…
Chicago (ORD) to Columbia (COU)
Historically, this flight arrives 15+ minutes late 29% of the time, and when it is late the delay averages 87 minutes. It was cancelled 3.1% of the time.
- On-time arrivals
- 71.3%
- Less than 15 minutes late
- Cancelled
- 3.1%
- Of scheduled flights
- Average delay when late
- 87 min
- Flights arriving 15+ minutes late
- Flights tracked
- 289
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 35%
- Late-arriving aircraft 34%
- Air traffic control & airport 26%
- Extreme weather 5%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
State College (SCE) to Chicago (ORD)
Historically, this flight arrives 15+ minutes late 12% of the time, and when it is late the delay averages 172 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 88.2%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 172 min
- Flights arriving 15+ minutes late
- Flights tracked
- 35
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 69%
- Airline (crew, maintenance, cleaning) 18%
- Air traffic control & airport 12%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Louisville (SDF) to Chicago (ORD)
Historically, this flight arrives 15+ minutes late 28% of the time, and when it is late the delay averages 37 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 72.4%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 37 min
- Flights arriving 15+ minutes late
- Flights tracked
- 30
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 56%
- Late-arriving aircraft 29%
- Air traffic control & airport 15%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Cleveland (CLE) to Chicago (ORD)
Only 5 flights on record, which is too few for reliable odds.
- On-time arrivals
- 20.0%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 124 min
- Flights arriving 15+ minutes late
- Flights tracked
- 5
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 42%
- Extreme weather 29%
- Air traffic control & airport 26%
- Airline (crew, maintenance, cleaning) 3%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Tucson (TUS) to Houston (IAH)
Only 3 flights on record, which is too few for reliable odds.
- On-time arrivals
- 100.0%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- —
- Flights arriving 15+ minutes late
- Flights tracked
- 3
- Scheduled flights in the period
Providence/Warwick (PVD) to Chicago (ORD)
Only 1 flight on record, which is too few for reliable odds.
- On-time arrivals
- 100.0%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- —
- Flights arriving 15+ minutes late
- Flights tracked
- 1
- Scheduled flights in the period
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 100.0% | 10 |
| October 2025 | 72.4% | 30 |
| November 2025 | 65.5% | 30 |
| December 2025 | 61.3% | 31 |
| January 2026 | 65.5% | 31 |
| February 2026 | 71.4% | 28 |
| March 2026 | 57.1% | 31 |
| April 2026 | 65.5% | 30 |
| May 2026 | 87.5% | 42 |
| June 2026 | 84.9% | 54 |
| July 2026 | 76.7% | 31 |
| August 2026 | 60.0% | 15 |
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