Flight UA1801
United Airlines flight UA1801
Looking for UA1801 in the air…
Chicago (ORD) to Seattle (SEA)
Historically, this flight arrives 15+ minutes late 29% of the time, and when it is late the delay averages 62 minutes. It was cancelled 0.6% of the time.
- On-time arrivals
- 70.8%
- Less than 15 minutes late
- Cancelled
- 0.6%
- Of scheduled flights
- Average delay when late
- 62 min
- Flights arriving 15+ minutes late
- Flights tracked
- 179
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 45%
- Air traffic control & airport 36%
- Airline (crew, maintenance, cleaning) 14%
- Extreme weather 5%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Philadelphia (PHL) to Chicago (ORD)
Historically, this flight arrives 15+ minutes late 22% of the time, and when it is late the delay averages 131 minutes. It was cancelled 1.2% of the time.
- On-time arrivals
- 77.5%
- Less than 15 minutes late
- Cancelled
- 1.2%
- Of scheduled flights
- Average delay when late
- 131 min
- Flights arriving 15+ minutes late
- Flights tracked
- 81
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 49%
- Air traffic control & airport 41%
- Airline (crew, maintenance, cleaning) 9%
- Extreme weather 1%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Washington (DCA) to Chicago (ORD)
Historically, this flight arrives 15+ minutes late 11% of the time, and when it is late the delay averages 52 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 89.1%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 52 min
- Flights arriving 15+ minutes late
- Flights tracked
- 55
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 40%
- Air traffic control & airport 36%
- Airline (crew, maintenance, cleaning) 24%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Chicago (ORD) to Denver (DEN)
Historically, this flight arrives 15+ minutes late 25% of the time, and when it is late the delay averages 80 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 75.0%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 80 min
- Flights arriving 15+ minutes late
- Flights tracked
- 52
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 39%
- Air traffic control & airport 30%
- Airline (crew, maintenance, cleaning) 26%
- Extreme weather 6%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
PBI → ORD
Historically, this flight arrives 15+ minutes late 27% of the time, and when it is late the delay averages 122 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 73.1%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 122 min
- Flights arriving 15+ minutes late
- Flights tracked
- 26
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 49%
- Air traffic control & airport 47%
- Airline (crew, maintenance, cleaning) 4%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Orlando (MCO) to Chicago (ORD)
Historically, this flight arrives 15+ minutes late 10% of the time, and when it is late the delay averages 34 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 90.5%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 34 min
- Flights arriving 15+ minutes late
- Flights tracked
- 21
- 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).
Newark (EWR) to Miami (MIA)
Only 19 flights on record, which is too few for reliable odds.
- On-time arrivals
- 94.7%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 21 min
- Flights arriving 15+ minutes late
- Flights tracked
- 19
- Scheduled flights in the period
What caused the delays
- Extreme weather 100%
- Airline (crew, maintenance, cleaning) 0%
- Late-arriving aircraft 0%
- Air traffic control & airport 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Denver (DEN) to Austin (AUS)
Only 4 flights on record, which is too few for reliable odds.
- On-time arrivals
- 75.0%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 50 min
- Flights arriving 15+ minutes late
- Flights tracked
- 4
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 56%
- Late-arriving aircraft 44%
- Air traffic control & airport 0%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Denver (DEN) to Reno (RNO)
Only 2 flights on record, which is too few for reliable odds.
- On-time arrivals
- 50.0%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 23 min
- Flights arriving 15+ minutes late
- Flights tracked
- 2
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 86%
- Airline (crew, maintenance, cleaning) 14%
- Air traffic control & airport 0%
- 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 Airlines’ AI Support With Special Tennis Request for Helpful Employee
Yardbarker United Airlines
-
‘Oh My God, What?'” – Serena Williams’ Coach Can’t 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 | 80.0% | 30 |
| October 2025 | 94.6% | 37 |
| November 2025 | 78.0% | 59 |
| December 2025 | 78.0% | 50 |
| January 2026 | 69.2% | 27 |
| February 2026 | 88.9% | 27 |
| March 2026 | 71.0% | 32 |
| April 2026 | 74.5% | 55 |
| May 2026 | 61.3% | 31 |
| June 2026 | 73.3% | 30 |
| July 2026 | 70.0% | 30 |
| August 2026 | 80.6% | 31 |
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