How are SQ31’s Airbus A350-900 cabin rows arranged across the aircraft?

Business rows 11-22 use a 1-2-1 layout, except row 18, which is 0-2-0. Premium Economy rows 31-33 use a 2-4-2 layout. Economy rows 41-62 use a 3-3-3 layout, except row 46, which is 3-0-3; row 47, which is 2-3-2; and row 62, which is 0-3-0.

What is the average seat rating on SQ31?

The 253 seats on the Singapore Airlines Airbus A350-900 flying SQ31 average 5.6 out of 10 for comfort. By cabin: Business 5.8, Premium Economy 6.5 and Economy 5.4. 10 seats rate Good or better, and 49 rate below average.

What legroom and seat width does each SQ31 cabin provide?

Business has 60" of legroom and 28" of width. Premium Economy has 38" of legroom and 19" of width, while Economy has 32" of legroom and 18" of width.

What route does SQ31 fly?

SQ31 is the Singapore Airlines flight from San Francisco (SFO, San Francisco International) to Singapore (SIN, Singapore Changi), flown on the Airbus A350-900. It takes about 17h 40m for 13,582 km (8,439 miles), estimated from the great-circle distance. The return flight, SQ34, flies Singapore to San Francisco.

What recline and seat type are offered in each cabin on SQ31?

Business has a full flat seat with 180° recline. Premium Economy has a standard seat with 8" of recline, and Economy has a standard seat with 6" of recline.

Can I check real-time seat availability on SQ31?

Yes. Open SQ31 in the live seat map and choose your travel date to see which seats are still open on that day, each coloured by its comfort score.

How many seats are in each cabin on Singapore Airlines flight SQ31?

SQ31’s Airbus A350-900 has 253 seats: 42 in Business, 24 in Premium Economy, and 187 in Economy.

SQ31 seat map

Singapore Airlines Airbus A350-900, 3 classes, from San Francisco (SFO) to Singapore (SIN)

Departs: San Francisco (SFO); San Francisco International, United States
Arrives: Singapore (SIN); Singapore Changi, Singapore
Flight time: About 17h 40m; Estimated from 13,582 km (8,439 miles)
Aircraft: Airbus A350-900; 3 classes, 1 deck

Your flight date

Check live availability

SQ31 is the Singapore Airlines flight from San Francisco (SFO) to Singapore (SIN), scheduled on an Airbus A350-900 with 253 seats in 3 classes: 42 in Business, 24 in Premium Economy and 187 in Economy. The best seats are 12A in Business, 31C in Premium Economy and 48A in Economy. Avoid row 62 at the back of Economy: limited recline, near the lavatories and the galley.

SQ31 interactive seat map

Select a seat for its comfort score and what to watch out for. Colours show comfort, not availability.

Seat scores on SQ31

Covers all 253 seats on the aircraft.

Excellent9.0+0 seats
Good7.0 to 8.910 seats
Fair5.0 to 6.9194 seats
Below average3.0 to 4.931 seats
Poorunder 3.018 seats

Scores weigh legroom, recline, window position and distance from galleys, lavatories and exits. Seat-map glossary

Best in Business
Fair6.0 / 10
Window seat
Best in Premium Economy
Good8.8 / 10
Aisle seat, extra legroom, no floor storage
Best in Economy
Good8.8 / 10
Window seat, extra legroom, exit row, cold by exit, no floor storage

Seat data verified October 3, 2026. How we verify seat data

Which plane is SQ31 on?

The aircraft and layout our seat map for SQ31 comes from.

Date	Thu, Oct 8
Aircraft	Airbus A350-900
Layout	42J, 24W, 187Y (253 seats)

Airlines can swap planes close to departure, so confirm the aircraft at check-in.

SQ31 airports

Where the flight leaves from and lands.

Departure: San Francisco International SFO; San Francisco, United States
Arrival: Singapore Changi SIN; Singapore

Seats by cabin on SQ31

How the 253 seats on this aircraft split by cabin.

Business42 seats
Premium Economy24 seats
Economy187 seats

Open seats change daily. Check live availability for your date

Best seats on SQ31

The top seats in every cabin, the ones to skip, and the pick for what matters to you.

Best seats on every aircraft

Comfort score out of 10Excellent9.0+Good7.0 to 8.9Fair5.0 to 6.9Below average3.0 to 4.9Poorunder 3.0

Business

Rows 11 to 22, 42 seats

Top picks

Window seatFair6.0 / 10
Window seatFair6.0 / 10
Window seatFair6.0 / 10

Seats to avoid

Aisle seat, near lavatory, near galleyBelow average4.2 / 10
Aisle seat, near lavatory, near galleyBelow average4.2 / 10
Window seat, misaligned windowBelow average4.2 / 10

Best for

Window
Aisle
Sleep
Couples

Premium Economy

Rows 31 to 33, 24 seats

Top picks

Aisle seat, extra legroom, no floor storageGood8.8 / 10
Aisle seat, extra legroom, no floor storageGood8.8 / 10
Window seat, extra legroom, no floor storage, wing in windowGood8.8 / 10

Seats to avoid

No seat in this cabin scores below Fair.

Best for

Window
Aisle
Extra legroom
Sleep
Couples

Economy

Rows 41 to 62, 187 seats

Top picks

Window seat, extra legroom, exit row, cold by exit, no floor storageGood8.8 / 10
Window seat, extra legroom, exit row, cold by exit, no floor storageGood8.8 / 10
Window seat, extra legroom, exit row, near lavatory, cold by exitGood8.8 / 10

Seats to avoid

Aisle seat, limited recline, near lavatoryPoor2.2 / 10
Middle seat, limited recline, near lavatoryPoor2.2 / 10
Aisle seat, limited recline, near lavatoryPoor2.2 / 10

Best for

Window
Aisle
Extra legroom
Sleep
Couples

Row-by-row notes for SQ31

The rows worth knowing about before you choose, from the Airbus A350-900 cabin layout. New to terms like bulkhead or pitch? See the seat-map glossary.

Row 11Business. First row of the cabin: near the galley.
Row 18Business. Near the lavatories and the galley.
Row 19Business. Near the galley.
Row 22Business. Last row of the cabin.
Row 31Premium Economy. First row of the cabin: extra legroom; no floor storage.
Row 33Premium Economy. Last row of the cabin.
Row 41Economy. First row of the cabin: no floor storage and tray table in the armrest.
Row 45Economy. Near the lavatories.
Row 46Economy. Limited recline: the row sits in front of an exit row. Also near the lavatories.
Row 47Economy. Exit row: extra legroom; near the lavatories, can get cold by the exit, no floor storage and tray table in the armrest.
Row 61Economy. Limited recline, near the lavatories and the galley.
Row 62Economy. Last row of the cabin: limited recline, near the lavatories and the galley.

Cabins on SQ31

Layout, legroom and amenities in each class on the Singapore Airlines Airbus A350-900.

Compare Wi-Fi and entertainment across airlines

Business

Rows 11 to 22, 42 seats

Layout: 1-2-1
Pitch: 60"
Width: 28"
Recline: 180°

Lie-flat seat.

Wi-Fi enabled
AC/USB power
Free on demand entertainment

Premium Economy

Rows 31 to 33, 24 seats

Layout: 2-4-2
Pitch: 38"
Width: 19"
Recline: 8"

Standard seat with 8" of recline.

Wi-Fi enabled
AC/USB power
Free on demand entertainment

Economy

Rows 41 to 62, 187 seats

Layout: 3-3-3
Pitch: 32"
Width: 18"
Recline: 6"

Standard seat with 6" of recline.

Wi-Fi enabled
AC/USB power
Free on demand entertainment

SQ31 questions

Flying SQ31? Answered.

The aircraft, the cabins and the seats on this flight, answered from its seat map data.

The highest-rated seat on SQ31 is 31C in Premium Economy, with a comfort score of 8.8 out of 10: aisle seat, extra legroom, no floor storage. In the other cabins, the best seats are 12A in Business (6.0) and 48A in Economy (8.8).

Other flights from San Francisco to Singapore

Every flight we have mapped from San Francisco to Singapore, with the plane and the best seats, so you can compare before you book.

SQ31 seat map
Singapore Airlines
This page
SFO
San Francisco
about 17h 40mSan Francisco to Singapore
SIN
Singapore
Airbus A350-900253 seats
UA29 seat map
United Airlines
SFO
San Francisco
about 17h 40mSan Francisco to Singapore
SIN
Singapore
Boeing 787-9222 seats
Flying a different San Francisco to Singapore flight?
The live seat map shows the aircraft and the open seats for your flight number and date.
Search San Francisco to Singapore in the live seat map

Flying back? Singapore to San Francisco

More Singapore Airlines flights

Singapore Airlines flights we have mapped on other routes.

All Singapore Airlines seat maps

SQ21 seat map
Singapore Airlines
EWR
Newark
about 19h 50mNewark to Singapore
SIN
Singapore
Airbus A350-900161 seats
SQ22 seat map
Singapore Airlines
SIN
Singapore
about 19h 50mSingapore to Newark
EWR
Newark
Airbus A350-900161 seats
SQ23 seat map
Singapore Airlines
JFK
New York
about 19h 50mNew York to Singapore
SIN
Singapore
Airbus A350-900161 seats
SQ27 seat map
Singapore Airlines
SEA
Seattle
about 16h 55mSeattle to Singapore
SIN
Singapore
Airbus A350-900253 seats
SQ35 seat map
Singapore Airlines
LAX
Los Angeles
about 18h 20mLos Angeles to Singapore
SIN
Singapore
Airbus A350-900253 seats
SQ37 seat map
Singapore Airlines
LAX
Los Angeles
about 18h 20mLos Angeles to Singapore
SIN
Singapore
Airbus A350-900253 seats