Japan Airlines A350-900 Seat Selection Guide (2026)

The two seats that look fine and aren't

Open JAL's seat map for the A350-900 and 39A and 39K look like every other window seat in the economy cabin. They sit mid-cabin, roughly two-thirds of the way back, surrounded on both sides by ordinary rows. Nothing marks them out.

They have no window at either position — wall only — and JAL's own aircraft page lists 39A and 39K under "No window" for both configurations. This is not a misaligned window you can lean around. There is nothing there.

39K carries a second problem: JAL lists it as the only seat on the aircraft with no recline. So on a four-hour Haneda–Okinawa run you would be sitting upright, against a wall, in a seat that costs exactly what 38K costs.

The saving grace is that this is the one thing both versions share. Whichever A350-900 you end up on, avoid 39A and 39K.

The version lottery: X11 vs X12

JAL operates 17 A350-900s across two layouts: 9 aircraft in the 369-seat X11 configuration and 8 in the 391-seat X12 — close enough to a coin flip that you cannot plan around it.

	X11	X12
Total seats	369	391
First Suites	12, rows 1–2	12, rows 1–2
Class J	94, rows 5–19	56, rows 5–12
Economy	263, rows 27–61	323, rows 20–61
Economy extra-pitch rows	None — flat 31" throughout	Rows 22–26 A/B/C at 33", plus 40D
Front of economy	Row 27 bulkhead — usable	Rows 20–21 sit against lavatories — avoid
"Great" window seats	15K, 46A, 46K	46A, 46K, 50A, 50K
Aircraft	9	8

Two things follow from this. First, if you are chasing Class J, X11 gives you 94 seats to bid for against X12's 56 — a materially better chance of an upgrade clearing. Second, and more practically: the same seat number is a different physical seat between versions. Economy starts at row 27 on X11 and row 20 on X12. Seat 30A is a third of the way back on one and near the front of the cabin on the other.

How to tell which version you're on

Load the seat map in JAL's booking flow and look at one thing: where the Class J cabin ends.

• Class J runs to row 19, and economy starts at row 27 → you are on X11, the 369-seat aircraft.
• Class J stops at row 12, and economy starts at row 20 → you are on X12, the 391-seat aircraft.

The total seat count is the other tell if the map shows it — 369 or 391. Both versions have the same 12 First Suites in rows 1–2, so the front of the cabin tells you nothing.

First Suites — 12 seats, rows 1–2

Jamco shell-enclosed recliners in a 2-2-2 layout, 53" pitch, 20.1" wide, with a massage function and a sliding privacy screen between seats. 15.6" screens. Identical on both versions.

Best: 1D, 1G, 2D, 2G. This is counter-intuitive — they are the centre pair. On a 2-2-2 layout the centre seats are usually the ones to avoid, exactly these four are direct-aisle-access seats with nobody to climb over, and the window pairs (A/C and H/K) are not. If you are travelling alone, take a centre seat here; if you are a couple, take A/C or H/K and accept that the inner passenger steps over.

Row 1 over row 2: all six row 1 seats get the bulkhead's extra room ahead. Row 2 does not.

Class J — rows 5–19 (X11) or 5–12 (X12)

Recaro PL3530 recliners, 2-4-2, 38" pitch, 18.7" wide, 5" recline, adjustable headrest and legrest, 11.6" screens. A flat 38" cabin — no row has more pitch than any other, so ignore anything that claims otherwise.

Best: row 5 (A, C, H, K only — the centre block doesn't exist in this row), which leads the cabin and gets the bulkhead's extra room. 15K is worth knowing about on X11: it is one of only three seats on the entire aircraft with a window rated "great" rather than merely average.

Avoid: 12D, 12E, 12F, 12G. Row 12 is a centre-block-only row with the galley immediately behind — noise and bright light through the meal service. On X12 the same four seats carry the same warning, plus 20E at the front of economy picks up galley noise from ahead.

Economy — the row-by-row

Recaro CL3710, 3-3-3, 31" pitch, 18" wide, 10.6" screens (8.9" retractable in the front row of each cabin). Adjustable armrests everywhere except the front row of each cabin.

The most legroom in economy: row 45 — and why it isn't the best seat

Row 45 has the most legroom in the economy cabin on both versions. It sits behind the mid-cabin break, and JAL designates 45ABC and 45HJK as emergency exit row seats, and every seat in the row has extra legroom.

It is worth being clear about what you are trading for it, because all nine seats in row 45 rate amber and none of them green. There is no underseat storage — the bulkhead is in front, so your bag goes overhead for the whole flight. The tray table and screen live in the armrest, which narrows the seat. And 45A and 45K have misaligned windows on top of that. If you are tall and the legroom is what you are buying, take 45C or 45H and accept the storage loss. If it isn't, the cabin has better seats.

The seats that actually rate green are 46A and 46K, immediately behind: "great" windows on both versions, and you keep your underseat storage. On X12, 50A and 50K are a second pair of great windows, and the extra-pitch block at rows 22–26 gives you more room than row 45 does without any of its compromises.

The front of economy: very different on the two versions

On X11, row 27 leads economy with 69–72cm of bulkhead legroom — genuinely generous. Same trade-offs as row 45: no underseat storage, tray in the armrest. The whole row rates amber rather than green because of the storage loss, which is the right call for a short domestic hop where you want your bag at your feet.

On X12 the equivalent seats are a trap. Economy starts at row 20, and rows 20 and 21 sit immediately against a lavatory bank. 20D, 20G, 20H, 20J, 20K and 21A, 21B, 21C all rate red — bulkhead legroom, and a toilet door at your shoulder. 20E escapes the red only to pick up galley noise instead. This is the single biggest difference between the two aircraft: the seats that look like the best economy row on the map are among the worst on the aeroplane.

What X12 gives you instead: rows 22 to 26 on the A/B/C side. These measure roughly 84cm — about 33", two inches more than the 31" standard — and almost all of them rate green. This is the best-value economy block on either version: real extra legroom, no bulkhead, no lavatory, and you keep your underseat storage. The exceptions are 24A, which has a misaligned window, and 23K/24K on the other side of the aircraft, which get the misaligned window without the extra pitch.

40D on X12 also picks up about 82cm — a single extra-pitch seat, worth knowing if it is all that's left.

Window seats to avoid

• 39A, 39K — no window at all, wall only. Confirmed on both versions. 39K also does not recline. Worst seats on the aircraft.
• 35A, 35K — no usable view; the window sits well behind the seat. Also on both versions.
• Misaligned windows on X11: 29A/29K, 30A/30K, 36A/36K, 45A/45K, 49A/49K, 53A/53K, 57A/57K.
• Misaligned windows on X12: 21A, 23K, 24A/24K, 29A/29K, 30A/30K, 36A/36K, 45A/45K, 49A/49K, 53A/53K, 57A/57K.

The rear of the cabin

Rows 58 to 61 sit around the rear lavatories and it shows. 58H, 58J, 58K, 59G, 59H, 59J, 59K, 60G and 61G are directly against a lavatory door — noise, odour and a queue beside your shoulder for the whole flight. Rows 57J, 58G, 59E, 60C, 60E, 61D and 61E are one step removed but still in the traffic.

One bright spot back there: 60A has no seat beside it. Extra side space, and the underseat storage next to you is yours. It is the only seat in the rear third worth choosing deliberately.

Quick-pick summary

If you are…	Choose
Solo in First	1D or 1G — aisle access, nobody to climb over
A couple in First	1A/1C or 1H/1K
In Class J	Row 5 (A, C, H, K) — bulkhead room, no galley
Legroom priority in economy	45C or 45H — most room, but no bag at your feet. On X12, rows 22–26 A/B/C are better
Best economy seat overall	46A or 46K — great window, normal storage, both versions
After the view	46A or 46K, plus 50A/50K on X12; 15K in Class J on X11 only
Travelling alone in economy	60A — no seat beside you
Budget, anything goes	Anywhere rows 30–38 or 46–56 — avoiding 35A/35K and 39A/39K

FAQ

Does JAL fly the A350-900 internationally?
No. Both configurations are domestic-only. The A350-1000 is the international variant.

Is Class J worth paying for?
It is a 38" recliner against 31" in economy, with a wider seat and a bigger screen. On the longer domestic sectors — Haneda to Okinawa or Sapporo — that is a meaningful difference. On a 90-minute hop it is less so. Same-day upgrades are available at the airport from three hours before departure if seats are free, for an additional fee.

Which version has more legroom in economy?
Neither, except in one specific place: X12 has a block of extra-pitch rows at 22–26 on the A/B/C side only. X11 has no equivalent — every economy row on X11 is the same 31".

Is WiFi free?
Domestic in-flight WiFi is provided on the A350. It runs on Panasonic eXConnect Ku-band satellite, rated for streaming.

Are there power outlets at every seat?
Yes — 110V AC and USB-A in all three cabins.