What aircraft does CX252 use?

Cathay Pacific flight CX252 operates on a Boeing 777-300ER from LHR to HKG.

How long is the CX252 flight?

The estimated flight time for CX252 from LHR to HKG is approximately 12h 32m covering 9,631 km (5,984 miles).

How many seats does this Boeing 777-300ER have?

This Cathay Pacific Boeing 777-300ER has 294 total seats across 4 cabin classes: First, Business, Premium Economy, Economy.

What cabin classes are available on this aircraft?

This Boeing 777-300ER offers 4 cabin classes: First, Business, Premium Economy, Economy. Seat distribution: 6 First seats, 53 Business seats, 34 Premium Economy seats, 201 Economy seats.

What route does CX252 fly?

Cathay Pacific flight CX252 operates from LHR (London Heathrow Airport) to HKG (Hong Kong International Airport), connecting London and Hong Kong.

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.

CX252 Seat Map

● On time

Cathay Pacific · Boeing 777-300ER · Sun, 21 Jun 2026

Depart

LHR · London

12h 32m

5,984 mi

Arrive

HKG · Hong Kong

+ Seat alert

F · First

1/6

J · Business

5/53

W · Premium Economy

1/34

Y · Economy

46/201

Filter:

First Business Premium Economy Economy Extra legroom / exit Occupied Blocked

View:

First · Business · Premium · Economy · Rows 1–72

100%

Pinch to zoom • Double-tap to zoom in

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Get seat alerts

Top picks · Business

Highest-scoring available seats on this aircraft

11D

Score 63 #1

Easy aisle access · Front of cabin (faster service)

Aisle Business

11G

Score 63 #2

Easy aisle access · Front of cabin (faster service)

Aisle Business

16D

Score 63 #3

Easy aisle access · Front of cabin (faster service)

Aisle Business

40K

Score 63 #4

Window view · Near wings (smoother ride)

Window

Get Seat Alerts

CX252 Flight Details

Flight Number: CX252

Origin:

(London Heathrow Airport, London)

Destination:

(Hong Kong International Airport, Hong Kong)

Distance: 9,631 km (5,984 mi)

Est. Duration: 12h 32m

Flight Date: June 21, 2026

Aircraft: Boeing 777-300ER

Airline Routes: View Cathay Pacific route map

Award Availability: Check award seats on AwardTravelFinder

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Flight Route Map

Explore More Routes:

View flights from LHR View flights to HKG View Cathay Pacific route map

Aircraft Configuration

Aircraft Details

Seating info & configuration

Airline: Cathay Pacific (CX)
Aircraft: Boeing 777-300ER
Seating: Main Deck: 294 seats

Economy: 201

46 147 8

23% Available

Premium Economy: 34

1 27 6

3% Available

Business: 53

5 40 8

9% Available

First: 6

1 5 0

17% Available
Legend: Seat Status

Blocked

Occupied

Standard

Cabin Classes

First

Business

Premium Economy

Economy

Extra legroom / exit

Features

Exit door

WC Lavatory

GALLEY Galley

CREW Crew area

Cathay Pacific Boeing 777-300ER seat map layout for flight CX252 from LHR to HKG — Reference layout

This Boeing 777-300ER operates Cathay Pacific flight CX252 from London (LHR) to Hong Kong (HKG). 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 CX252

Based on legroom, location, and passenger preferences

Members only

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Create a free account to see which seats have the best legroom, views, and quietest locations.

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Best Window Seats

Seat 40K Economy
Seat 70K Economy
Seat 72A Economy

Best Aisle Seats

Seat 11D Business
Seat 11G Business
Seat 16D Business

Quietest Seats

Seat 11D Business
Seat 11G Business
Seat 16D Business

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

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Seat Selection Assistance

Seat Alerts Require Payment

Seat alerts are available to users with a paid plan or credits. This feature monitors seat availability and notifies you when your preferred seats become available.

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