Cathay Pacific
Boeing 777-300ER
Cathay Pacific 777-300ER Seat Guide (2026) | Cabin
TL;DR
Cathay's 777-300ER is in the middle of a significant cabin refresh. Some aircraft now have the new Aria Suites with sliding doors in business class. Others still fly the older reverse herringbone product. The Aria Suites feature sliding doors for privacy and are a major step up from the old cabin. The version lottery is real on this aircraft - check before you book.
Try Cabin
The best seats on Cathay Pacific's 777-300ER - including the new Aria Suites in business class, premium economy, and economy. Version lottery warning included.
Cathay Pacific's 777-300ER is one of the most important aircraft in Asian aviation. It carries passengers from Hong Kong across the Pacific, to Europe, and throughout Asia on daily basis. And right now it's in the middle of one of the most significant cabin transformations of any major airline.
The Version Lottery - Read This First
Cathay Pacific has rolled out its newly retrofitted 777-300ER with Aria Suites in business class. The first retrofitted aircraft flew in October 2024. Australian routes including Sydney to Hong Kong got the upgrade in April 2025. But many aircraft still operate the older cabin configuration.
Cathay operates several different 777-300ER configurations with seat counts varying significantly depending on the version. The newest version has 45 business, 48 premium economy, and 268 economy seats. Check the seat map when you book - if you see Aria Suites listed in business, you have the new aircraft.
Business Class - Aria Suites (New Configuration)
The Aria Suites are a reverse herringbone design with sliding doors for privacy, similar in concept to Qatar Airways QSuites. The layout is 1-2-1 with direct aisle access from every seat.
Window seats A and K are the most private. The middle D and G seats are good for couples - the privacy divider can be raised or lowered.
Business Class - Classic Configuration (Older Aircraft)
For solo travelers on the older configuration, seats 11A and 11K are the best picks - very private, no one in front of you, with a little extra space by the wall. The mini-cabin of rows 11 and 12 is particularly quiet and private when the aircraft includes a first class section.
Premium Economy
48 premium economy seats arranged in a 2-4-2 configuration with 15.6-inch 4K screens. Seats 32H and 32K offer good legroom. Seats 30D, 30E, 30F, and 30G have extra legroom but passengers walk in front of you to access the bathroom.
Economy
268 economy seats in a 3-4-3 configuration. The 3-4-3 middle section means four seats sharing an armrest situation - avoid the center block if you can.
Seats 39A, 39C, 39H, and 39K offer good legroom at the bulkhead. Seat 31A has no window. Seat 15A has no window in the older configuration.
Best Seats
Seat | Cabin | Why |
|---|---|---|
1A, 1K | Business (Aria) | Window suites, maximum privacy |
11A, 11K | Business (Classic) | Front of main cabin, very private, no one in front |
11D, 11G | Business (Classic) | Best for couples, easy deplaning |
32H, 32K | Premium Economy | Good legroom |
39A, 39C | Economy | Bulkhead, extra legroom |
Seats to Avoid
Seat | Why |
|---|---|
15A | No window |
31A | No window |
Last economy rows | Limited recline, galley proximity |
30G | Light spills from lavatory |
Does Cathay Pacific 777-300ER have Aria Suites?
Some aircraft do, following a retrofit programme that began in October 2024. Not all 777-300ERs have been upgraded yet. Check the seat map when booking to confirm which configuration you have.
What is the best seat in Cathay Pacific business class on the 777-300ER?
On the new Aria Suites aircraft, window seats A or K for privacy. On the older configuration, seat 11A or 11K is the top pick for solo travelers - private, no one in front, extra wall space.
How many seats does the Cathay Pacific 777-300ER have?
The newest configuration has 361 seats: 45 business, 48 premium economy, and 268 economy.
What is the economy layout on the Cathay Pacific 777-300ER?
3-4-3 configuration with 268 seats. Avoid the center four-seat block if possible.
Does Cathay Pacific 777-300ER have Wi-Fi?
Yes. Wi-Fi is available on Cathay Pacific's long-haul 777-300ER flights.
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