UA924United Airlines · IAD → LHR
live · 3m ago
Route confirmed United Airlines

UA924 WashingtonIAD · 22:15 LondonLHR · 10:40

UA924 by United Airlines flies from Washington (IAD) to London (LHR) for the Wed, Sep 9 departure.

Right nowIn the air to London · off blocks 23:38 · 83 min late
14:08

estimated arrival at LHR · local time · ~10h 37m from now

LivePosition · updated 3m ago
IAD3,662 mi · ~10h 37m leftLHR
7,600 ftAltitudeclimbing
348 mphSpeed302 kt
39°Direction

Live position · flown path, last 4 min

⚖ UA924 typically leaves +68 and lands +8. The air wins minutes back.
Typical gate push+68 minmedian posted departure
Typical arrival+8 minmedian over 14 operations
Wins back in air~60 minmedian gate push vs arrival · how planes make up time → Cancellation0 in 14tracked operations · cancellation odds calculator →

Where the minutes go

last 7 operations · gate push → arrival
0+108+217+325 min
09-09
+83 gate · −43 arrival
09-08
+22 gate · −25 arrival
09-07
+325 gate · +265 arrival
09-06
+15 gate · +1 arrival
09-05
+43 gate · −13 arrival
09-04
+64 gate · +8 arrival
09-03
+115 gate · +62 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 +8 min · 0 cancelled · 14 operations tracked

The route today

live boards
IADWashingtonOn-time likelyIAD delay board →
LHRLondonModerate riskLHR delay board →
IAD→LHRevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Delay & cancellation outlook for this flight

Measured, 90-day sample
33%Chance of 15+ min delay
3.5%Chance of cancellation
+2 minAvg hub delay right now

Conditions at IAD and LHR are near their clear-air norm right now, so this reflects the route's recent baseline rather than a weather penalty. For this route and airline, 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 →

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 UA924 actually runs

Pro Flight Search has tracked every published board update for UA924 across the IAD and LHR boards: schedule changes, gate pushes and actual clocks. Usually lands ~8 min late. Based on 13 confirmed landings · 7/13 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 UA924 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
09-09IAD 22:15 23:38 (+83)LHR 10:40 09:57 (−43)
09-08IAD 22:05 22:27 (+22)LHR 10:40 10:15 (−25)
09-07IAD 22:15 03:40 (+325)LHR 10:40 15:05 (+265)
09-06IAD 22:15 22:30 (+15)LHR 10:40 10:41 (+1)
09-05IAD 22:15 22:58 (+43)LHR 10:40 10:27 (−13)
09-04IAD 22:15 23:19 (+64)LHR 10:40 10:48 (+8)
09-03IAD 22:15 00:10 (+115)LHR 10:40 11:42 (+62)
09-02IAD 22:15 23:38 (+83)LHR 10:40 11:46 (+66)
09-01IAD 22:15 23:23 (+68)LHR 10:40 11:17 (+37)
08-31IAD 22:15 22:58 (+43)LHR 10:40 10:23 (−17)
08-30IAD 22:15 23:34 (+79)LHR 10:40 11:04 (+24)
08-29IAD 22:15 22:41 (+26)LHR 10:40 10:18 (−22)
08-28IAD 22:15 23:04 (+49)LHR 10:40 10:37 (−3)
08-27IAD 22:15 00:25 (+130)LHR 10:40 11:43 (+63)

Aircraft

Recent tails: N69063, N227UA, N37018, N77014.

Board clocks recorded as IAD and LHR published them.

Planning around UA924? 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 — UA924 Washington to London on-time performance, measured from the IAD and LHR airport boards.

Canonical URL
https://proflightsearch.com/flight/UA924
How we measure this →