Flight UA309
United Airlines flight UA309
Looking for UA309 in the airâŚ
Albany (ALB) to Chicago (ORD)
Historically, this flight arrives 15+ minutes late 7% of the time, and when it is late the delay averages 63 minutes. It was cancelled 3.2% of the time.
- On-time arrivals
- 93.3%
- Less than 15 minutes late
- Cancelled
- 3.2%
- Of scheduled flights
- Average delay when late
- 63 min
- Flights arriving 15+ minutes late
- Flights tracked
- 31
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 100%
- Airline (crew, maintenance, cleaning) 0%
- Late-arriving aircraft 0%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Boston (BOS) to Newark (EWR)
Historically, this flight arrives 15+ minutes late 8% of the time, and when it is late the delay averages 28 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 91.7%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 28 min
- Flights arriving 15+ minutes late
- Flights tracked
- 24
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 83%
- Airline (crew, maintenance, cleaning) 17%
- Late-arriving aircraft 0%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
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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 | 93.3% | 30 |
| October 2025 | 91.7% | 25 |
Source: U.S. DOT Bureau of Transportation Statistics on-time data, September 2025 â August 2026. Covers flights operated by reporting U.S. carriers. About our data