United UA451 Flight Status Tracker
UA451 is a domestic flight operated by United. UA451 is departing from Denver (DEN), United States and arriving at Ontario (ONT), United States. The flight distance is about 1316.96 km or 818.32 miles and flight time is 2 hours 19 minutes. Get the latest status of UA451 / UAL451 here.
Update on Jan. 21, 2026, 11:27 a.m.
Lastest Status
Scheduled On time
| DEN | ONT |
Distance: 1316.96 km / 818.32 miles or 711.10 nautical miles.
Departure Denver International Airport
Estimate Departure: 11:55
Scheduled Departure: 11:55
Departure Terminal : D Gate None
Arrival Ontario International Airport
Estimate Arrival: 13:12
Scheduled Arrival: 13:12
Arrival Terminal : 1 Gate None
Flight UA451 detail information
| Type | Domestic Flight |
| Route | Departure Denver (DEN), United States and arriving at Ontario (ONT), United States |
| Airlines | United (UA) |
| Aircraft | Boeing 737-900 |
| Flight Duration | 2 hours 19 minutes |
| Flight Distance | 1316.96 km /818.32 miles |
| Operating Days | Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday |
Find more flight status
UA451 Airports
| Departures |
|---|
| Airport: Denver International Airport, United States |
| ICAO Code: DEN |
| DEN Current time: 06:21 21-Jan-2026 |
| Arrivals |
| Airport: Ontario International Airport, United States |
| ICAO Code: ONT |
| ONT Current time: 05:21 21-Jan-2026 |