Seats Frog guide
Boeing 777-300 seat maps
2 Boeing 777-300 seat maps from 2 airlines, from 338 to 438 seats, with every seat rated good, mixed or bad.
Seat maps updated October 2026.
| Airline and layout | Seats | Cabins | Economy | Rated good |
|---|---|---|---|---|
| Cathay Pacific77P regional, 42 Business · 396 Economy | 438 | 42 Business396 Economy | 3-4-3 | 0% |
| Korean Air41 Prestige · 297 Economy | 338 | 41 Business297 Economy | 3-3-3 · 18.1" wide | 10% |
Seats rated good have only upsides (extra legroom, space beside the seat, privacy). Open a layout for the drawn map and the reason for every seat. Or compare two side by side.
Quick answers
How many seats does a Boeing 777-300 have?
It depends on the airline: of the 2 Boeing 777-300 layouts on Seats Frog, Korean Air's has the fewest seats (338) and Cathay Pacific's the most (438).
How many seats across is Economy on the Boeing 777-300?
Airlines fit Economy on the Boeing 777-300 3-4-3 or 3-3-3 across: 3-4-3 on Cathay Pacific; 3-3-3 on Korean Air.