How many seats does this Airbus A350-1000 have?

This Cathay Pacific Airbus A350-1000 has 334 total seats across 3 cabin classes: Economy, Premium Economy, Business.

What cabin classes are available on this aircraft?

This Airbus A350-1000 offers 3 cabin classes: Economy, Premium Economy, Business. Seat distribution: 256 Economy seats, 32 Premium Economy seats, 46 Business seats.

What route does CX257 fly?

Cathay Pacific flight CX257 operates from HKG (Hong Kong International Airport) to LHR (London Heathrow Airport), connecting Hong Kong and London.

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.

CX257 Seat Map HKG → LHR

Cathay Pacific Airbus A350-1000 Oct 25, 2025

Filter:

Available Window Aisle Extra Legroom Occupied

View:

100%

Pinch to zoom • Double-tap to zoom in

Main Deck

Business Class

11D

11G

12A

12D

12G

12K

14A

14D

14G

14K

15A

15D

15G

15K

16A

16D

16G

16K

17A

17D

17G

17K

18A

18D

18G

18K

19A

19D

19G

19K

20A

20D

20G

20K

21A

21D

21G

21K

22A

22D

22G

22K

23A

23D

23G

23K

Premium Economy Class

30A

30C

30D

30E

30F

30G

30H

30K

31A

31C

31D

31E

31F

31G

31H

31K

32A

32C

32D

32E

32F

32G

32H

32K

33A

33C

33D

33E

33F

33G

33H

33K

Economy Class

39D

39E

39G

40A

40B

40C

40D

40E

40G

40H

40J

40K

41A

41B

41C

41D

41E

41G

41H

41J

41K

42A

42B

42C

42D

42E

42G

42H

42J

42K

43A

43B

43C

43D

43E

43G

43H

43J

43K

44A

44B

44C

44D

44E

44G

44H

44J

44K

45A

45B

45C

45D

45E

45G

45H

45J

45K

46A

46B

46C

46D

46E

46G

46H

46J

46K

47A

47B

47C

47D

47E

47G

47H

47J

47K

48A

48B

48C

48D

48E

48G

48H

48J

48K

49A

49B

49C

49D

49E

49G

49H

49J

49K

59A

59C

59D

59E

59G

59H

59K

60A

60B

60C

60D

60E

60G

60H

60J

60K

61A

61B

61C

61D

61E

61G

61H

61J

61K

62A

62B

62C

62D

62E

62G

62H

62J

62K

63A

63B

63C

63D

63E

63G

63H

63J

63K

64A

64B

64C

64D

64E

64G

64H

64J

64K

65A

65B

65C

65D

65E

65G

65H

65J

65K

66A

66B

66C

66D

66E

66G

66H

66J

66K

67A

67B

67C

67D

67E

67G

67H

67J

67K

68A

68B

68C

68D

68E

68G

68H

68J

68K

69A

69B

69C

69D

69E

69G

69H

69J

69K

70A

70B

70C

70D

70E

70G

70H

70J

70K

71A

71B

71C

71D

71E

71G

71H

71J

71K

72A

72B

72C

72D

72E

72G

72H

72J

72K

73A

73B

73C

73D

73E

73G

73H

73J

73K

74A

74B

74C

74D

74E

74G

74H

74J

74K

75A

75B

75C

75D

75E

75G

75H

75J

75K

76A

76B

76C

76D

76E

76G

76H

76J

76K

77D

77E

77G

Get seat alerts

Get Seat Alerts

CX257 Flight Details

Flight Number: CX257

Origin:

(Hong Kong International Airport, Hong Kong)

Destination:

(London Heathrow Airport, London)

Flight Date: October 25, 2025

Aircraft: Airbus A350-1000

Airline Routes: View Cathay Pacific route map

Award Availability: Check award seats on AwardTravelFinder

Change Flight Date

Sign Up Free to Unlock

Best seat recommendations
1 free seatmap search per month
Full seat details and legroom info

Already have an account? Sign in

Want Live Seat Availability?

Subscribe for real-time seat availability and pricing

View Plans

Flight Route Map

Explore More Routes:

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

Aircraft Configuration

Aircraft Details

Seating info & configuration

Airline: Cathay Pacific (CX)
Aircraft: Airbus A350-1000
Seating: Main Deck: 334 seats

Economy: 256

215 41 0

84% Available

Premium Economy: 32

15 17 0

47% Available

Business: 46

29 17 0

63% Available
Legend: Seat Status

Blocked

Occupied

Standard

Seat Types

Premium

Legroom

Window

Aisle

Features

EXIT Exit Row

LAV Lavatory

GAL Galley

CREW Crew

This Airbus A350-1000 operates Cathay Pacific flight CX257 from Hong Kong (HKG) to London (LHR). 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 CX257

Based on legroom, location, and passenger preferences

See Best Seat Recommendations

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

Already have an account? Sign in

Best Window Seats

Seat 47K Economy
Seat 47A Economy
Seat 46K Economy

Best Aisle Seats

Seat 59C Economy
Seat 44G Economy
Seat 44D Economy

Best for Legroom

Seat 59C Economy
Seat 59K Economy

Exit Row Seats

Seat 59C Economy
Seat 59K Economy

Quietest Seats

Seat 44G Economy
Seat 41K Economy
Seat 42A Economy

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

Compare Seats

Long-press seats to add them for comparison

Compare Seats

Click and hold on seats to add them for comparison

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.