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Heathrow
T3 Departure · SriLankan Airlines

UL504: SriLankan Airlines, Heathrow to Colombo

UL504 is the SriLankan Airlines departure from Heathrow Terminal 3 to Colombo (CMB), scheduled to leave at 21:30. This page has the terminal, where to check in and drop bags, what the departure hour means for the security queue, how early to arrive, and a live-status link for today.

Flight
UL504
SriLankan Airlines
To
CMB
Colombo
Terminal
T3
Heathrow
Scheduled
21:30
Local, scheduled
On this page (6 sections)
UL504 today

Scheduled departure 21:30, London time.

See how UL504 is running today on the Heathrow departures board, or follow the aircraft on Flightradar24.

Which terminal this flight departs from

Departs from Terminal 3, in the Central Terminal Area, home to most of oneworld plus Virgin Atlantic, Delta and Emirates. Check-in and bag drop are on the departures level of the main terminal, then a single central security search. There are lounges in Terminal 3 airside, and you can check the security queue first. It shares the Heathrow Terminals 2 and 3 station on the Elizabeth Line, the Piccadilly Line and Heathrow Express, a short covered walk from departures. See the Terminal 3 guide.

Check-in, bag drop and security

Online check-in usually opens 24 hours before departure. Bag drop desks generally open about three hours before a long-haul flight and close 60 minutes before departure, though the exact cutoff is set by the airline, so confirm yours. Everyone leaving goes through the same central security search: liquids follow the limits shown at the terminal on the day, and the hand-baggage rules are on the luggage page. Fast Track security is sold at some terminals if you would rather skip the main queue. For a long-haul departure, arriving about three hours before takeoff leaves room for bag drop, security and the walk to a satellite gate.

An evening departure

Leaves in the evening bank. Security stays open, but check-in and bag drop close well before you board, so do not cut the arrival time fine. The Elizabeth Line, Piccadilly Line and Heathrow Express all run late but thin out towards midnight, so check the last service if you are heading to the airport late. Black cabs and private transfers run around the clock.

Seeing someone off on UL504

You can only go through to the departure lounge with a boarding pass, so there is no gate farewell at Heathrow. Say your goodbyes landside in the Terminal 3 departures hall, before the passenger goes through security. If you have driven, the cheapest place to wait is Terminal 3 short-stay rather than the forecourt, where the £7 drop-off charge applies.

Getting to and from Heathrow

Getting to Heathrow for UL504: if someone is dropping you off, the forecourt carries a £7 charge, or they can use the Terminal 3 Park & Ride free 29-minute window instead. For public transport into the terminal, compare the Heathrow Express, the Elizabeth Line, the Piccadilly Line, coaches, black cabs and private transfers.

Frequently asked

What terminal does UL504 depart from?

UL504 departs from Heathrow Terminal 3, the SriLankan Airlines terminal. Check in and drop your bags there rather than at the other terminals.

What time does UL504 leave Heathrow?

The scheduled departure is 21:30 London time. It can shift with the season, so this page keeps the time in step with the Heathrow board; to see how UL504 is running today, check the departures board.

Where does UL504 fly to?

UL504 is the SriLankan Airlines service from Heathrow Terminal 3 to Colombo (CMB).

Can I go through to the gate to see someone off on UL504?

No. Only passengers with a boarding pass go through security into the departure lounge, so say your goodbyes landside in the Terminal 3 departures hall before the search.