UO540HK Express · HKG → HAN
live · 1h ago
Route confirmed HK Express

UO540 Hong KongHKG · 07:40 HanoiHAN · 08:50

UO540 by HK Express flies from Hong Kong (HKG) to Hanoi (HAN).

Right nowNext departure tomorrow Operates Tue Thu Sat Sun
07:40

scheduled from HKG

Typical gate push+1 minmedian posted departure
Typical arrival−31 minmedian over 3 operations
Wins back in air~32 minmedian gate push vs arrival · how planes make up time →

Where the minutes go

last 7 operations · gate push → arrival
0+30+60+90 min
09-22
−6 gate
09-20
+3 gate
09-19
+3 gate · −28 arrival
09-17
+2 gate
09-15
−6 gate
09-13
−8 gate
09-12
+1 gate · −31 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 −31 min · 0 cancelled · 9 operations tracked

The route today

live boards
HKGHong KongOn-time likelyHKG delay board →
HANHanoiHigh riskHAN delay board →
HKG→HANevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Weather-conditioned outlook for this flight right now

Measured, 90-day sample
49%Chance of 15+ min delay
1.4%Chance of cancellation
+10 minAvg hub delay right now

Driven mainly by HAN (Hanoi), currently flying MVFR (marginal visual). 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 UO540 actually runs

Pro Flight Search has tracked every published board update for UO540 across the HKG and HAN boards: schedule changes, gate pushes and actual clocks. Usually departs on time. Based on 9 confirmed departures · 9/9 within 15 min of schedule.

The verdict above is that record speaking, so it reflects how UO540 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
09-22HKG 07:40 07:34 (−6)HAN 08:50
09-20HKG 07:40 07:43 (+3)HAN 08:50
09-19HKG 07:40 07:43 (+3)HAN 08:50 08:22 (−28)
09-17HKG 07:40 07:42 (+2)HAN 08:50
09-15HKG 07:40 07:34 (−6)HAN 08:50
09-13HKG 07:40 07:32 (−8)HAN 08:50
09-12HKG 07:40 07:41 (+1)HAN 08:50 08:19 (−31)
09-10HKG 07:40 07:41 (+1)HAN 08:50
09-08HKG 07:40 07:28 (−12)HAN 08:50 08:14 (−36)

Aircraft

Recent tails: B-KKC, B-LCI, B-KKN, B-HTI.

Board clocks recorded as HKG and HAN published them.

Planning around UO540? 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 — UO540 Hong Kong to Hanoi on-time performance, measured from the HKG and HAN airport boards.

Canonical URL
https://proflightsearch.com/flight/UO540
How we measure this →