Flight UA558
United Airlines flight UA558
Looking for UA558 in the airâŚ
Denver (DEN) to Boston (BOS)
Historically, this flight arrives 15+ minutes late 8% of the time, and when it is late the delay averages 57 minutes. It was cancelled 0.6% of the time.
- On-time arrivals
- 91.9%
- Less than 15 minutes late
- Cancelled
- 0.6%
- Of scheduled flights
- Average delay when late
- 57 min
- Flights arriving 15+ minutes late
- Flights tracked
- 337
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 43%
- Late-arriving aircraft 29%
- Airline (crew, maintenance, cleaning) 28%
- 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 13% of the time, and when it is late the delay averages 138 minutes. It was cancelled 3.1% of the time.
- On-time arrivals
- 87.1%
- Less than 15 minutes late
- Cancelled
- 3.1%
- Of scheduled flights
- Average delay when late
- 138 min
- Flights arriving 15+ minutes late
- Flights tracked
- 32
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 86%
- Air traffic control & airport 9%
- Airline (crew, maintenance, cleaning) 5%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
In the news
More headlines →-
United Airlines First Class Steak And Eggs: Great Steak, But Where Were The Eggs?
Live and Let's Fly United Airlines
-
United Airlines Cuts Starlink Installation Timeline to 18 Months as Rollout Accelerates
Drive Tesla Canada United Airlines
-
President Of United Airlines Holdings Makes $4.00M Sale
Benzinga United Airlines
-
From the US to the Costa Smeralda, the number of flights will double in 2027 with United Airlines
Il Sole 24 ORE United Airlines
-
'Actually Did His Job'- Jessica Pegula Takes Aim at United Airlinesâ AI Support With Special Tennis Request for Helpful Employee
Yardbarker United Airlines
-
âOh My God, What?'â â Serena Williamsâ Coach Canât Believe What Jessica Pegula Went Through With United Airlines
Yahoo Sports United Airlines
Headlines found by Google News; stories open on the publisher's site.
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 86.7% | 30 |
| October 2025 | 73.3% | 31 |
| November 2025 | 88.5% | 26 |
| December 2025 | 91.7% | 24 |
| January 2026 | 92.9% | 44 |
| February 2026 | 93.8% | 33 |
| March 2026 | 83.9% | 31 |
| April 2026 | 93.3% | 30 |
| May 2026 | 96.8% | 31 |
| June 2026 | 100.0% | 30 |
| July 2026 | 96.8% | 31 |
| August 2026 | 100.0% | 28 |
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