What aircraft does UL504 use?

SriLankan Airlines flight UL504 operates on a Airbus A330-300 from LHR to CMB.

How long is the UL504 flight?

The estimated flight time for UL504 from LHR to CMB is approximately 11h 24m covering 8,715 km (5,415 miles).

How many seats does this Airbus A330-300 have?

This SriLankan Airlines Airbus A330-300 has 297 total seats across 2 cabin classes: Business, Economy.

What cabin classes are available on this aircraft?

This Airbus A330-300 offers 2 cabin classes: Business, Economy. Seat distribution: 28 Business seats, 269 Economy seats.

What route does UL504 fly?

SriLankan Airlines flight UL504 operates from LHR (London Heathrow Airport) to CMB (Bandaranaike International Colombo Airport), connecting London and Colombo.

How do I choose the best seat?

The best seat depends on your priorities. For extra legroom, choose seats near emergency exits or bulkhead rows. For quick boarding/deplaning, select seats near the front. Avoid seats near lavatories or galleys if you prefer a quieter flight. Window seats offer views and a wall to lean against, while aisle seats provide easier access to move around.

What do the different seat colors mean?

Green seats are typically available for selection, red seats are occupied or blocked, yellow/orange seats may have restrictions or extra fees, and blue seats often indicate premium or preferred seating with additional charges. Hover over any seat to see specific details and pricing.

Can I change my seat after booking?

Yes, most airlines allow seat changes after booking, though fees may apply depending on your fare type and desired seat. You can typically change seats through the airline's website, mobile app, or by calling customer service. Some seats become available closer to departure as the airline releases blocked inventory.

When is the best time to select seats?

The best time varies by strategy. Book immediately after purchasing your ticket for the widest selection, or wait until 24 hours before departure when airlines often release blocked premium seats. For popular routes, early selection is recommended. Our seat alerts can notify you when preferred seats become available.

Are the seat maps updated in real-time?

Our flight seat maps are updated regularly throughout the day to reflect current availability. However, seat availability can change rapidly, especially close to departure. We recommend checking the airline's official website for the most up-to-date information when making your final selection.

What if my preferred seat isn't available?

You can also check back periodically as seats often open up closer to departure when other passengers make changes or when the airline releases additional inventory.

UL504 Seat Map — London to Colombo

SriLankan Airlines Airbus A330-300 Dec 05, 2025

SriLankan Airlines flight UL504 operates from London (LHR) to Colombo (CMB) using a Airbus A330-300 with 297 seats across Business and Economy. Use the interactive seat map below to find the best seat for your flight.

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UL504 Flight Details

Flight Number: UL504

Origin:

(London Heathrow Airport, London)

Destination:

(Bandaranaike International Colombo Airport, Colombo)

Distance: 8,715 km (5,415 mi)

Est. Duration: 11h 24m

Flight Date: December 05, 2025

Aircraft: Airbus A330-300

Airline Routes: View SriLankan Airlines route map

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Aircraft Configuration

Aircraft Details

Seating info & configuration

Airline: SriLankan Airlines (UL)
Aircraft: Airbus A330-300
Seating: Main Deck: 297 seats

Economy: 269

0 164 105

0% Available

Business: 28

10 7 11

36% Available
Legend: Seat Status

Blocked

Occupied

Standard

Seat Types

Premium

Legroom

Window

Aisle

Features

EXIT Exit Row

LAV Lavatory

GAL Galley

CREW Crew

SriLankan Airlines Airbus A330-300 seat map layout for flight UL504 from LHR to CMB

This Airbus A330-300 operates SriLankan Airlines flight UL504 from London (LHR) to Colombo (CMB). Browse the interactive seat map above to find the best seats for your journey, view real passenger reviews, and explore detailed cabin configurations to make an informed decision for your flight.

Best Seats on UL504

Based on legroom, location, and passenger preferences

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Best Aisle Seats

Seat 4D Business
Seat 4G Business
Seat 2G Business

Quietest Seats

Seat 4D Business
Seat 4G Business
Seat 2G Business

Recommendations based on seat characteristics, cabin position, and proximity to facilities. Availability may vary by date.

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View Detailed Airbus A330-300 Seat Map

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Frequently Asked Questions

UL504 Seat Map — London to Colombo

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Business Class

Economy Class

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