| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Aug 13 | DEN | ONT | 19:30 | 20:53 |
Delayed >1h
|
Track > |
United Airlines Flight UA8143 connects Denver, United States to Ontario, United States, taking off from Denver International Airport DEN and landing at Ontario International Airport ONT.
How long is the UA8143 flight from Denver to Ontario?
The average flight time from Denver to Ontario is 1 hour and 53 minutes. The flight distance is 1316 km / 818 miles and the average flight speed is 699 km/h / 434 mph.
What is the On-Time Performance (OTP) of United Airlines Flight UA8143 Denver to Ontario?
The Airportia On-Time Performance Rating for United Airlines Flight UA8143 is 4.1/5 stars. This metric is calculated using data from the past 10 flights.
When was the latest UA8143 flight?
The latest flight took off on Friday, August 14th, 2026 with the flight status being Scheduled on 21:46.
How else can the flight UA8143 be referenced as?
This United Airlines flight can also be referenced as UAL8143, UA 8143, UAL 8143.
How often is flight UA8143 delayed?
On average, 100% of all UA8143 flights are delayed. The average delay is 53 minutes.
Can I get compensation for my delayed or cancelled UA8143 flight or baggage issues?
If your UA8143 flight was cancelled, delayed, or if you experienced baggage issues such as delayed, damaged, or lost bags, you may be entitled to compensation. Compensation amounts and eligibility depend on various regulations, including EC 261/2004, UK261, CA Montreal Convention, US GoodWill, BR-ANAC, SA-GACA and TK-SHY.
See our UA8143 Flight Tracker above for more details.
Other flights departing from Denver DEN: WN1534, G43114, UA4705, UA8121
Other flights arriving at Ontario ONT: AS1332, WN1107, WN3904, WN2377
All flights connecting Denver DEN to Ontario ONT.