United UA400 Flight Status Tracker
UA400 is a domestic flight operated by United. UA400 is departing from Denver (DEN), United States and arriving at Washington (IAD), United States. The flight distance is about 2338.08 km or 1452.81 miles and flight time is 3 hours 22 minutes. Get the latest status of UA400 / UAL400 here.
Update on April 2, 2026, 11:03 a.m.
Lastest Status
Departed On time
| DEN | IAD |
Distance: 2338.08 km / 1452.81 miles or 1262.46 nautical miles.
Departure Denver International Airport
Actual Departure: 05:56
Scheduled Departure: 06:00
Departure Terminal : 2 Gate None
Arrival Washington Dulles Airport
Estimate Arrival: 11:27
Scheduled Arrival: 11:39
Arrival Terminal : 3 Gate None
Flight UA400 detail information
| Type | Domestic Flight |
| Route | Departure Denver (DEN), United States and arriving at Washington (IAD), United States |
| Airlines | United (UA) |
| Aircraft | Boeing 737-900 |
| Flight Duration | 3 hours 22 minutes |
| Flight Distance | 2338.08 km /1452.81 miles |
| Operating Days | Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday |
Find more flight status
UA400 Airports
| Departures |
|---|
| Airport: Denver International Airport, United States |
| ICAO Code: DEN |
| DEN Current time: 06:37 02-Apr-2026 |
| Arrivals |
| Airport: Washington Dulles Airport, United States |
| ICAO Code: IAD |
| IAD Current time: 08:37 02-Apr-2026 |