Which JL42 Premium Economy seats are listed with bassinet positions?

Seats 17D and 17G in Premium Economy are listed with bassinet positions.

What is the average seat rating on JL42?

The 239 seats on the Japan Airlines Airbus A350-1000 flying JL42 average 5.8 out of 10 for comfort. By cabin: First 6.0, Business 5.8, Premium Economy 4.9 and Economy 5.9. 4 seats rate Good or better, and 25 rate below average.

How does Economy row 62 differ from the usual JL42 seat pattern?

JL42 Economy usually has a 3-3-3 layout. Row 62 differs, with a 2-0-0 pattern.

What route does JL42 fly?

JL42 is the Japan Airlines flight from London (LHR, London Heathrow) to Tokyo (HND, Tokyo Haneda International), flown on the Airbus A350-1000. It takes about 12h 40m for 9,591 km (5,960 miles), estimated from the great-circle distance. The return flight, JL43, flies Tokyo to London.

Which JL42 Economy seats are in the exit row, and which are marked extra legroom?

The exit-row seats are 45A, 45B, 45C, 45H, 45J and 45K. Extra legroom is listed for 45A, 45B, 45C, 45D, 45E, 45G, 45H, 45J and 45K.

Can I check real-time seat availability on JL42?

Yes. Open JL42 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.

Which JL42 Business seats are listed as having a wing in the window view?

In Business, the seats listed as having a wing in the window view are 9A, 9K, 10A, 10K, 11A, 11K, 12A, 12K, 13A, 13K, 14A, 14K, 15A and 15K.

JL42 seat map

Japan Airlines Airbus A350-1000, 4 classes, from London (LHR) to Tokyo (HND)

Departs: London (LHR); London Heathrow, United Kingdom
Arrives: Tokyo (HND); Tokyo Haneda International, Japan
Flight time: About 12h 40m; Estimated from 9,591 km (5,960 miles)
Aircraft: Airbus A350-1000; 4 classes, 1 deck

Your flight date

Check live availability

JL42 is the Japan Airlines flight from London (LHR) to Tokyo (HND), scheduled on an Airbus A350-1000 with 239 seats in 4 classes: 6 in First, 54 in Business, 24 in Premium Economy and 155 in Economy. The best seats are 1A in First, 3A in Business, 18C in Premium Economy and 45C in Economy. Avoid row 19 at the back of Premium Economy: near the lavatories and the galley.

JL42 interactive seat map

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

Seat scores on JL42

Covers all 239 seats on the aircraft.

Excellent9.0+0 seats
Good7.0 to 8.94 seats
Fair5.0 to 6.9210 seats
Below average3.0 to 4.921 seats
Poorunder 3.04 seats

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

Best in First
Fair6.0 / 10
Window seat
Best in Business
Fair6.0 / 10
Window seat
Best in Premium Economy
Fair6.0 / 10
Aisle seat
Best in Economy
Good8.8 / 10
Aisle seat, extra legroom, exit row, near lavatory, near galley

Seat data verified October 14, 2026. How we verify seat data

Which plane is JL42 on?

The aircraft and layout our seat map for JL42 comes from.

Date	Mon, Dec 7
Aircraft	Airbus A350-1000
Layout	6F, 54J, 24W, 155Y (239 seats)

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

JL42 airports

Where the flight leaves from and lands.

Departure: London Heathrow LHR; London, United Kingdom
Arrival: Tokyo Haneda International HND; Tokyo, Japan

Seats by cabin on JL42

How the 239 seats on this aircraft split by cabin.

First6 seats
Business54 seats
Premium Economy24 seats
Economy155 seats

Open seats change daily. Check live availability for your date

Best seats on JL42

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

First

Rows 1 to 2, 6 seats

Top picks

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

Seats to avoid

No seat in this cabin scores below Fair.

Best for

Window
Sleep

Business

Rows 3 to 16, 54 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
Window seat, near lavatory, near galleyBelow average4.2 / 10
Aisle seat, near lavatory, near galleyBelow average4.2 / 10

Best for

Window
Aisle
Sleep
Couples

Premium Economy

Rows 17 to 19, 24 seats

Top picks

Aisle seatFair6.0 / 10
Aisle seatFair6.0 / 10
Aisle seatFair6.0 / 10

Seats to avoid

Aisle seat, near lavatory, near galleyPoor2.5 / 10
Middle seat, near lavatory, near galleyPoor2.5 / 10
Middle seat, near lavatory, near galleyPoor2.5 / 10

Best for

Window
Aisle
Extra legroom
Sleep
Couples

Economy

Rows 45 to 62, 155 seats

Top picks

Aisle seat, extra legroom, exit row, near lavatory, near galleyGood8.8 / 10
Aisle seat, extra legroom, exit row, near lavatory, near galleyGood8.8 / 10
Middle seat, extra legroom, exit row, near lavatory, near galleyGood8.8 / 10

Seats to avoid

Window seat, near lavatory, near galleyBelow average3.4 / 10
Middle seat, near lavatory, near galleyBelow average3.4 / 10
Aisle seat, near lavatory, near galleyBelow average3.4 / 10

Best for

Window
Aisle
Extra legroom
Sleep
Couples

Row-by-row notes for JL42

The rows worth knowing about before you choose, from the Airbus A350-1000 cabin layout. New to terms like bulkhead or pitch? See the seat-map glossary.

Row 1First. First row of the cabin.
Row 2First. Last row of the cabin.
Row 3Business. First row of the cabin.
Rows 7 to 8Business. Near the lavatories and the galley.
Row 16Business. Last row of the cabin.
Row 17Premium Economy. First row of the cabin: extra legroom; no floor storage.
Row 19Premium Economy. Last row of the cabin: near the lavatories and the galley.
Row 45Economy. First row of the cabin and an exit row: extra legroom; near the lavatories and the galley, no floor storage and tray table in the armrest.
Row 61Economy. Near the lavatories and the galley.
Row 62Economy. Last row of the cabin: near the lavatories and the galley.

Cabins on JL42

Layout, legroom and amenities in each class on the Japan Airlines Airbus A350-1000.

Compare Wi-Fi and entertainment across airlines

First

Rows 1 to 2, 6 seats

Layout: 1-1-1

Business

Rows 3 to 16, 54 seats

Layout: 1-2-1

Premium Economy

Rows 17 to 19, 24 seats

Layout: 2-4-2

Economy

Rows 45 to 62, 155 seats

Layout: 3-3-3

JL42 questions

Flying JL42? Answered.

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

The highest-rated seat on JL42 is 45C in Economy, with a comfort score of 8.8 out of 10: aisle seat, extra legroom, exit row, near lavatory, near galley. In the other cabins, the best seats are 1A in First (6.0), 3A in Business (6.0) and 18C in Premium Economy (6.0).

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JL43Return of this flight, HND to LHR

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