UL403 BangkokBKK · 07:45 ColomboCMB
UL403 by SriLankan Airlines flies from Bangkok (BKK) to Colombo (CMB) for the Tue, Sep 8 departure.
en route from BKK to CMB
board checked 105m ago · checking again in 45s
Board estimate · gate and arrival times. Off blocks 07:47.
Where the minutes go
last 7 operations · gate push → arrivalThe 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 operation0 cancelled · 15 operations tracked
The route today
live boardsWhen it flies
scheduled departuresEach mark is a scheduled departure at its origin-local time. Today is highlighted.
Other Bangkok to Colombo flights today
same route · SriLankan AirlinesIf UL403 is cancelled, this is the other SriLankan Airlines nonstop flight from Bangkok to Colombo on the same day, with scheduled departure times in BKK local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How UL403 actually runs
Pro Flight Search has tracked every published board update for UL403 across the BKK and CMB boards: schedule changes, gate pushes and actual clocks. Usually departs ~7 min early. Based on 14 confirmed departures · 14/14 within 15 min of schedule.
The verdict above is that record speaking, so it reflects how UL403 operates rather than what the timetable promises. Numbers refresh as new flights operate.
How this operation is measured
Board log
scheduled → actual, per operationAircraft
Recent tails: 4R-ABT, 4R-ABL, 4R-ABO, 4R-ABN.
Board clocks recorded as BKK and CMB published them.
Planning around UL403? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.
Pro Flight Search — UL403 Bangkok to Colombo on-time performance, measured from the BKK and CMB airport boards.
https://proflightsearch.com/flight/UL403
.