LATAM Boeing 777-300ER Seat Selection Guide (2026)

Row 39 sells extra legroom, no window, and an exit door pressing into two-thirds of the seat

Row 39 is one of the two economy exit rows on LATAM's 777-300ER, at doors L4 and R4. Every seat in it carries extra legroom, there is no seat back in front of you, and on a booking map it is one of the rows that lights up. It is also where the two worst seats on the aircraft live.

39A and 39L have no window. Not a misaligned window, not a restricted view — wall only at the seat position. And the exit door itself intrudes: door L4 takes about 75% of 39A's seat width, 30cm ahead of you, and door R4 takes about 65% of 39L's. You are not sitting beside a door, you are sitting behind one, and it occupies most of the space your legs were supposed to get.

Row 24, the forward exit row at doors L3 and R3, is the same shape in a much milder form. 24A and 24L also have no window at all, but the door intrusion is 10% and 15% rather than 75% and 65%. If you want an exit row on this aircraft and row 39's inboard seats are gone, 24B and 24K are the picks — middle seats, but with the legroom and none of the penalties.

Business — 38 Vantage XL seats, and all 38 have their own aisle

This is the reason to book the 777 over LATAM's A350. The A350's business cabin is 2-2-2, which means the window passenger climbs over their neighbour every time they want to move. The 777-300ER is a staggered 1-2-1 in the Thompson Aero Vantage XL, and every one of its 38 seats has direct aisle access. There is no seat in this cabin you have to be let out of. LATAM's spec is 45 inches of pitch, fully lie-flat.

The cabin runs rows 1 to 10 in two sections. The forward cabin is rows 1 to 6, with row 7 a two-seat oddity — only 7E and 7F exist, because the door 2 galley and lavatories take the outboard positions. The rear mini-cabin is rows 8, 9 and 10, sixteen seats behind the galley.

Because the cabin staggers, the window seats alternate between two positions. In rows 1, 3, 5, 8 and 10 the window seats are lettered A and L and sit hard against the fuselage with the console between you and the aisle — the private, enclosed half of the cabin. In rows 2, 4, 6 and 9 they are lettered C and J and sit further inboard, nearer the aisle and less enclosed. If privacy matters, book an A or an L.

The picks are 10A and 10L. They sit in the rear mini-cabin, as far from the forward lavatories as the cabin allows, in the enclosed window position, and 10A carries the best-aligned window in the business cabin. 8A and 8L are the same position one row forward. Up front, 3A and 3L are the pick of the forward cabin — enclosed window seats with perfectly aligned windows and two rows of separation from the lavatories.

Travelling as a pair? The centre pair is D and H in even rows, E and F in odd rows. 9E and 9F are the cleanest — well rated, in the quiet rear cabin, and both have direct aisle access, so neither of you is ever climbing over the other. Travelling alone? Take an A or L window in rows 3, 8 or 10.

LATAM+ — rows 12 to 16, and one of its seats has no window

The front five rows of economy, rows 12 to 16, are sold as LATAM+ with additional legroom. It is extra-legroom economy rather than a separate cabin — the same 3-4-3 seat, more space in front of it.

Row 12 is the bulkhead row. All ten seats get the extra legroom, and all ten pay for it: no underseat storage at all, so your bag goes overhead for the whole flight, and the tray table and screen live in the armrest, which makes the seat narrower than the ones behind it.

The best LATAM+ windows are 14A and 12L, both perfectly aligned. 12A sits behind its window and 13, 16 and the rest of the block are unremarkable in a good way — no flags, average window alignment.

The middle of the cabin — rows 19 to 24 are the block to avoid

Between the LATAM+ rows and the main economy cabin sits the door 3 complex, and it does more damage than a single row of lavatories usually does.

Rows 19 to 22 are rated avoid almost throughout. They sit immediately against a lavatory bank, and the rows physically shrink as they approach it — row 20 loses seats, row 21 loses more, row 22 is down to three. If a booking engine offers you a cheap seat in the low 20s, this is why.

Row 23 is four seats wide — 23D, 23E, 23F and 23H — and it is a bulkhead row with extra legroom. It looks like a find. It is not: the bulkhead those four seats face is the lavatory wall, with the doors immediately ahead of them. You get the legroom and you spend the flight looking at a toilet door with a queue in front of it.

Row 24 is the exit row, covered above. 24C and 24J get the legroom but catch the lavatory traffic from ahead; 24B and 24K are the clean picks in the row.

Main economy — rows 25 to 51, and where the good windows are

From row 25 back, the cabin settles into uninterrupted 3-4-3 at LATAM's quoted 31 to 32 inches. Rows 25 to 37 are consistently clean, with no flags across most of the block. Window alignment alternates row by row here: 26, 28, 30, 35 and 37 give their A and L seats two windows each, while 25, 27, 29, 31, 32, 34 and 36 give them one. If you are choosing between otherwise identical seats in this stretch, take an even row — 26A, 28A or 30A, and the same on the L side.

41L is a third perfectly aligned window. Seats to skip in this stretch: 33A, 33L, 48A and 48L all sit behind their windows, and 37E and 37F have the galley behind them with the light and noise of meal service.

Row 40's centre four — 40D, 40E, 40F and 40H — sit behind the galley gap, so they get extra legroom and lose their underseat storage. Worth it if you want the space and are travelling with nothing you need at your feet.

The back of the aircraft

Rows 50 and 51 are the rows to avoid outright. Both sit immediately against the rear lavatories, and both are where the fuselage narrows — the B and K seats disappear entirely, so the rows run 2-4-2 rather than 3-4-3. Nearly every seat in both is rated avoid.

If you end up in the rear third anyway, rows 44 to 47 and row 49 are clean, and 44, 46 and 42 give their window seats two windows each. 48A and 48L are the only window seats back there that sit behind their windows.

Quick-pick summary

Entertainment, power and WiFi

Entertainment is Panasonic eX2, audio and video on demand at every seat in both cabins. LATAM is rolling out Viasat Amara multi-orbit satellite WiFi across the fleet, combining geostationary and low-earth-orbit capacity — messaging is free, browsing is paid. LATAM's own note is that the rollout is still in progress and not every aircraft has it yet, so treat connectivity as likely rather than certain.

Frequently asked questions

Does LATAM fly more than one 777-300ER cabin?

No. All ten aircraft, operated by LATAM Brasil, carry the same 2019 cabin: 38 business seats and 372 economy. There is no version lottery on this type, which is unusual for a widebody of this age — whatever you book is what you get.

Is LATAM's 777 business class better than the A350?

Structurally, yes, and by a clear margin. The 777-300ER uses a staggered 1-2-1 Thompson Vantage XL where all 38 seats have direct aisle access. The A350-900 is a 2-2-2, so window passengers have to climb over their neighbour. Both are fully lie-flat, but only one lets you get up without asking.

Which business seats should I avoid?

6C, 6D, 6H and 6J, which sit immediately against the lavatory bulkhead at the back of the forward cabin, and to a lesser extent 5A and 5L, which catch the same traffic. Everything else in the cabin is clean.

Are there seats with no window?

Six: 15L and 18L in and just behind the LATAM+ block, 24A and 24L in the forward exit row, and 39A and 39L in the rear exit row. The last two also have an exit door intruding into 65 to 75% of the seat width, which makes them the two seats most worth actively avoiding on the whole aircraft.

Is LATAM+ worth paying for?

In rows 13, 14 and 16, yes — it is straightforward extra legroom with no strings. Row 12 is the bulkhead and costs you underseat storage and a little seat width, though 12C and 12J recover most of that with a partial bulkhead. Avoid 15L specifically if a window is what you are buying.

Where does the 777-300ER fly?

LATAM Brasil uses it on the longest and busiest routes out of São Paulo Guarulhos — Europe and North America — and it is the aircraft behind the airline's 2026 additions to Amsterdam, Brussels and Cape Town.