CX255: HKG → LHR – Flight Guide

The Boeing 777-300ER is the extended-range variant of the 777-300 and the best-selling member of the 777 family. It entered service in 2004 and has become the dominant long-haul widebody aircraft globally, operated by virtually every major international airline. Its combination of range (13,649 km), capacity (up to 396 passengers in 3-class), and operating economics makes it the industry standard for long-haul routes.

The 777-300ER is one of the safest commercial aircraft ever built. The Boeing 777 family has an impeccable safety record over 30 years of service. The GE90-115B engine is the world's highest-thrust commercial engine and is extraordinarily reliable. The aircraft is the backbone of fleets at Emirates, Qatar Airways, Air France, and many other leading airlines.

Typically 350-396 passengers in three-class configuration, or up to 550 in high-density all-economy. Emirates operates its 777-300ER in two classes (business and economy) with 364 seats. The standard economy layout is 3-3-3 (nine across), though budget-oriented configurations use 3-4-3 (ten across) which is tight.

In business class, look for seats with direct aisle access without stepping over your neighbour. In economy, the 3-3-3 window and aisle seats in rows 20-40 over the wing are the best balance of comfort and stability. The 3-4-3 layout should be avoided for the middle block if possible — aim for window or aisle in either outer group.

The GE90-115B is the world's most powerful commercial engine and produces a distinctive, powerful sound at takeoff that many passengers find impressive or even comforting. At cruise, the cabin is well-insulated. Rear seats are noisier; rows 10-35 are generally quieter.

Emirates operates the largest fleet globally (over 130 aircraft). Other major operators include Qatar Airways, Air France, KLM, Cathay Pacific, Singapore Airlines, Turkish Airlines, Air Canada, British Airways, and Lufthansa. It is operated on virtually every major long-haul route in the world.

The 777-300ER has a range of approximately 13,649 km (8,485 miles), enabling non-stop routes such as Dubai to Los Angeles, Paris to Tokyo, London to Sydney (via one stop), and many other ultra-long-haul connections.

Yes, the 777-300ER is one of the best aircraft for long-haul travel, particularly in business class where major carriers offer exceptional flat-bed products. Economy in 3-3-3 is comfortable; 3-4-3 is tighter but still manageable for most passengers on 12+ hour flights.

The 777X (777-9) is the next-generation successor to the 777-300ER, with composite folding wingtips, new GE9X engines, and an improved cabin similar to the 787. The 777-300ER is still in full production and service; the 777X is gradually entering service with select airlines.

The 777-300ER is an outstanding aircraft for nervous flyers. It is exceptionally large and stable, handles turbulence very smoothly, and has a remarkable safety record. The powerful GE90 engines provide tremendous thrust reserves. Sitting over the wing (rows 25-40) gives the most stable ride.

Yes, major operators like Emirates, Qatar, Singapore, and Cathay offer some of the best in-flight entertainment systems in the industry on their 777-300ER fleets, with large 4K personal screens and thousands of content options. Economy seat screens are typically 10-12 inches; business class screens are often 17-24 inches.

The 777 has a single-aisle business class cabin at the front, a premium economy section on some operators, and economy at the rear. The fuselage is circular and very wide, allowing 10-abreast seating in economy on some configurations. The cabin height is excellent, with generous overhead bin space.

Typically 8-12 toilets distributed throughout the cabin. With up to 400 passengers, toilet availability varies — economy passengers should use toilets between meal services for shortest queues.

In 3-3-3 configuration (standard), economy is comfortable with reasonable seat pitch on most major carriers. Emirates, Cathay, and Singapore offer good economy products. The 3-4-3 configuration used by some budget-oriented operators is notably tighter but still within industry norms for shorter long-haul flights.