About the Boeing 777-300ER
Boeing lists a length of 73.9 meters (242 feet 4 inches), a wingspan of 64.8 meters (212 feet 7 inches) and GE90 engines for the 777-300ER. Its longer-range design is intended for long routes. The exact distance it can fly on a given trip depends on factors such as payload and operating conditions.
Seating capacity
Boeing lists 350–425 seats for the 777-300ER in two classes. Airlines can allocate the cabin differently. ANA publishes 212 seats for one of its four-class configurations, with 8 First, 68 Business, 24 Premium Economy and 112 Economy seats. Japan Airlines publishes 244 seats for its W84 plan. Each figure belongs to the stated layout. Check the operating airline’s map for your own flight.
Cabin layout
The cabin has two aisles. ANA publishes one 212-seat map with 3–4–3 in Economy rows 31 through 38 and another 212-seat map with 2–4–3 across many Economy rows. Japan Airlines describes 3–3–3 for its 777-300ER Economy seating. The same total seat count can therefore come with a different row layout. Check your flight’s seat map for the aisle position and whether a seat at the side of the cabin has a window.
How to recognize a Boeing 777-300ER
Look for a long, wide fuselage and one large engine under each wing. ANA’s published dimensions give its original 777-300 the same length as the -300ER, with a smaller wingspan of 60.9 meters. Wingspan can help when you have comparable views. In a single photo, perspective makes the difference hard to judge. Use the registration to confirm the exact model.
Variants and related aircraft
The FAA lists the 777-300ER under B77W and the original 777-300 under B773. Japan Airlines uses 773 on its 777-300ER seat page, which shows why an airline equipment label and a radar type code can differ. Use the full model name if you are looking for the aircraft on a map.
Frequently asked questions
How many seats does a Boeing 777-300ER have?
It depends on the cabin. ANA shows a 212-seat layout and Japan Airlines shows a 244-seat layout. Boeing gives 350–425 seats as its two-class specification.
Is Economy always ten seats across on a Boeing 777-300ER?
The layout varies. ANA shows 3–4–3 in some rows of one 212-seat layout. Japan Airlines describes 3–3–3. Check the map for your flight.
