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

This Singapore Airlines Boeing 777-300ER has 236 total seats across 3 cabin classes: Business, Economy, First.

What cabin classes are available on this aircraft?

This Boeing 777-300ER offers 3 cabin classes: Business, Economy, First. Seat distribution: 48 Business seats, 184 Economy seats, 4 First seats.

What route does SQ631 fly?

Singapore Airlines flight SQ631 operates from HND (Tokyo Haneda International Airport) to SIN (Singapore Changi Airport), connecting Tokyo and Singapore.

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.

SQ631 Seat Map HND → SIN

Singapore Airlines Boeing 777-300ER Oct 22, 2025

Filter:

Available Window Aisle Extra Legroom Occupied

View:

100%

Pinch to zoom • Double-tap to zoom in

Main Deck

First Class

Business Class

11A

11D

11F

11K

12A

12D

12F

12K

14A

14D

14F

14K

15A

15D

15F

15K

16A

16D

16F

16K

17A

17D

17F

17K

18A

18D

18F

18K

19A

19D

19F

19K

20A

20D

20F

20K

21A

21D

21F

21K

22A

22D

22F

22K

23A

23D

23F

23K

Economy Class

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

48C

48H

48K

49A

49B

49C

49D

49E

49G

49H

49J

49K

50A

50B

50C

50D

50E

50G

50H

50J

50K

51A

51B

51C

51D

51E

51G

51H

51J

51K

52A

52B

52C

52D

52E

52G

52H

52J

52K

53A

53B

53C

53D

53E

53G

53H

53J

53K

54A

54B

54C

54D

54E

54G

54H

54J

54K

55A

55B

55C

55D

55E

55G

55H

55J

55K

56A

56B

56C

56D

56E

56G

56H

56J

56K

57A

57B

57C

57D

57E

57G

57H

57J

57K

58A

58B

58C

58D

58E

58G

58H

58J

58K

59A

59B

59C

59D

59E

59G

59H

59J

59K

60A

60B

60C

60D

60E

60G

60H

60J

60K

61A

61C

61D

61E

61G

61H

61K

62H

62K

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SQ631 Flight Details

Flight Number: SQ631

Origin:

(Tokyo Haneda International Airport, Tokyo)

Destination:

(Singapore Changi Airport, Singapore)

Flight Date: October 22, 2025

Aircraft: Boeing 777-300ER

Airline Routes: View Singapore Airlines route map

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Flight Route Map

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Aircraft Configuration

Aircraft Details

Seating info & configuration

Airline: Singapore Airlines (SQ)
Aircraft: Boeing 777-300ER
Seating: Main Deck: 236 seats

Economy: 184

64 120 0

35% Available

Business: 48

1 47 0

2% Available

First: 4

1 3 0

25% Available
Legend: Seat Status

Blocked

Occupied

Standard

Seat Types

Premium

Legroom

Window

Aisle

Features

EXIT Exit Row

LAV Lavatory

GAL Galley

CREW Crew

Singapore Airlines Boeing 777-300ER seat map layout for flight SQ631 from HND to SIN

This Boeing 777-300ER operates Singapore Airlines flight SQ631 from Tokyo (HND) to Singapore (SIN). 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 SQ631

Based on legroom, location, and passenger preferences

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Best Window Seats

Seat 45K Economy
Seat 50A Economy
Seat 50K Economy

Best Aisle Seats

Seat 42D Economy
Seat 59H Economy
Seat 59G Economy

Best for Legroom

Seat 49B Economy
Seat 49J Economy

Exit Row Seats

Seat 49B Economy
Seat 49J Economy

Quietest Seats

Seat 42D Economy
Seat 59H Economy
Seat 59G Economy

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

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.

Passenger Reviews for SQ631

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Frequently Asked Questions

SQ631 Singapore Airlines Seat Map from HND to SIN - Boeing 777-300ER