UA804United Airlines · HND → IAD
live · 4m ago
Route confirmed United Airlines

UA804 TokyoHND · 16:50 WashingtonIAD · 16:40

UA804 by United Airlines flies from Tokyo (HND) to Washington (IAD) for the Mon, Nov 2 departure.

Right nowEn route to Washington · off blocks 17:13 · 23 min late
En route

en route from HND to IAD

En routeUA804 · position estimated
HNDTokyoIADWashington
Estimated from the boards

Board estimate · gate and arrival times. Off blocks 17:13 · typical taxi-out at HND ≈ 12.8 min. No receiver coverage over open ocean.

⚖ UA804 typically leaves −3 and lands −35. The air wins minutes back.
Typical gate push−3 minmedian posted departure
Typical arrival−35 minmedian over 13 operations
Wins back in air~32 minmedian gate push vs arrival · how planes make up time → Cancellation0 in 13tracked operations · cancellation odds calculator →

Where the minutes go

last 7 operations · gate push → arrival
0+44+88+132 min
11-02
+23 gate · −45 arrival
11-01
−13 gate · −35 arrival
10-31
−3 gate · −50 arrival
10-30
+2 gate · −25 arrival
10-29
−7 gate · −36 arrival
10-28
−15 gate · −42 arrival
10-27
+132 gate · +86 arrival

The bar is how late it left the gate; the ring is where it actually arrived. Board clocks, not estimates.

The last 30 days

arrival outcome per operation

median arrival −35 min · 0 cancelled · 13 operations tracked

The route today

live boards
HNDTokyoOn-time likelyHND delay board →
IADWashingtonOn-time likelyIAD delay board →
HND→IADevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Delay & cancellation outlook for this flight

Measured, 90-day sample
39%Chance of 15+ min delay
4.2%Chance of cancellation
+8 minTypical airport delay in this weather

Conditions at HND and IAD are near their clear-air norm right now, so this reflects the route's recent baseline rather than a weather penalty. These figures come from both airports' records under conditions like today's, over the last 90 days.

Pro Flight Search tracking, 90 days · the weather × delay correlation study → · live weather risk by airport →

Tomorrow at Tokyo

Forecast

Tue 3 Nov, local date

High19°Clikely 18°C to 21°C
Low14°Clikely 13°C to 15°C

Forecast: GateWeather · incl. data from ECMWF (CC BY 4.0, modified) · Expected values for tomorrow from a forecast model, kept apart from today's measured figures.

Tomorrow at Washington

Forecast

Tue 3 Nov, local date

High22°Clikely 20°C to 24°C
Low8°Clikely 5°C to 11°C

Forecast: GateWeather · incl. data from ECMWF (CC BY 4.0, modified) · Expected values for tomorrow from a forecast model, kept apart from today's measured figures.

When it flies

scheduled departures
061422
M
T
W
T
F
S
S

Each mark is a scheduled departure at its origin-local time. Today is highlighted.

How UA804 actually runs

Pro Flight Search has tracked every published board update for UA804 across the HND and IAD boards: schedule changes, gate pushes and actual clocks. Usually lands ~17 min early. Based on 13 confirmed landings · 10/13 within 15 min of schedule. Pushes back late but makes up time in the air.

The verdict above is that record speaking, so it reflects how UA804 operates rather than what the timetable promises. Numbers refresh as new flights operate.

Technical record

How this operation is measured

board clocksaircraft

Board log

scheduled → actual, per operation
11-02HND 16:50 17:13 (+23)IAD 16:40 15:55 (−45)
11-01HND 16:50 16:37 (−13)IAD 15:40 15:05 (−35)
10-31HND 16:50 16:47 (−3)IAD 16:40 15:50 (−50)
10-30HND 16:50 16:52 (+2)IAD 16:40 16:15 (−25)
10-29HND 16:50 16:43 (−7)IAD 16:40 16:04 (−36)
10-28HND 16:50 16:35 (−15)IAD 16:40 15:58 (−42)
10-27HND 16:50 19:02 (+132)IAD 16:40 18:06 (+86)
10-26HND 16:50 16:47 (−3)IAD 16:40 15:55 (−45)
10-25HND 16:50 16:44 (−6)IAD 16:40 15:51 (−49)
10-24HND 15:45 15:41 (−4)IAD 15:35 15:17 (−18)
10-23HND 15:45 15:52 (+7)IAD 15:35 15:17 (−18)
10-22HND 15:45 17:45 (+120)IAD 15:35 17:09 (+94)
10-21HND 15:45 22:52 (+427)IAD 15:35 22:08 (+393)

Aircraft

Recent tails: N77014, N78002, N76021, N78013.

Board clocks recorded as HND and IAD published them.

Planning around UA804? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure

Cite this data

Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.

Suggested citation

Pro Flight Search: UA804 Tokyo to Washington on-time performance, measured from the HND and IAD airport boards.

Canonical URL
https://proflightsearch.com/flight/UA804
How we measure this →