TR644: SIN → HKT – Flight Guide

The A321 is part of the highly proven A320 family and shares the same fly-by-wire safety systems. It has been in service since 1994 and is operated by hundreds of airlines worldwide with an excellent reliability record.

The A321 typically seats between 180 and 220 passengers. It is the largest member of the A320 family and is popular for high-demand short and medium-haul routes where airlines need more capacity without going to a widebody aircraft.

The A321 offers a similar experience to the A320 but with more rows and slightly more overhead bin space. The cabin is identical in width, so seat width is the same. Exit rows provide the most legroom, and full-service carriers typically offer decent pitch in economy.

The standard A321 has a range of about 5,950 km. The A321XLR variant (extra long range) extends this to over 8,700 km, enabling transatlantic routes. The standard variant is used mainly for busy European and domestic routes.

The A321 typically has 4 toilets due to its longer fuselage: one or two at the front and two at the rear. This is an advantage over the smaller A319 and A320, reducing queue times on busy flights.

No, the A321 experiences turbulence similarly to other A320 family members. Its longer fuselage actually provides a slightly smoother flexing motion. The fly-by-wire system manages control inputs automatically, keeping the ride stable.

Major operators include American Airlines, United Airlines, Lufthansa, Turkish Airlines, easyJet, Wizz Air, Air China, and many others. It is particularly popular in the US market where high-density domestic routes benefit from its extra capacity.

Yes, the A321 is an excellent aircraft for nervous flyers. It is a well-proven, mature design with decades of safe service. The fly-by-wire system gives it excellent stability, and the slightly larger size compared to smaller jets can feel more reassuring.

Exit rows (typically rows 16-17) offer the most legroom. The very front rows (1-3) offer extra legroom and first-off boarding. Avoid the last few rows at the rear — they are louder and the seats may not recline fully.

Wi-Fi availability depends on the airline. Many full-service carriers operating the A321 offer Wi-Fi, especially on their US domestic and transatlantic routes. Budget carriers generally do not.

The A321 is a stretched version of the A320, about 7 metres longer. It carries significantly more passengers (up to 220 vs 186) and has more overhead bin space. The flying experience is very similar, though the longer cabin means more rows to board and slightly longer boarding times.

The A321neo (New Engine Option) is a modernised version of the A321 with new fuel-efficient engines, larger winglets, and optional new cabin interiors. It entered service in 2017 and is significantly quieter and more fuel-efficient than the classic A321.

Air quality on the A321 is identical to other A320 family members, with HEPA-filtered air refreshed every 2-3 minutes. The longer cabin means a few more rows to distribute the same air volume, but this has no noticeable effect on passenger comfort.

The A321 has the same overhead bin design as the A320 but with more rows. On busy flights, bins can fill quickly. On aircraft fitted with the new Airspace cabin, the bins are significantly larger and can accommodate more bags.

The A321XLR (Extra Long Range) is a new variant of the A321 with extended fuel capacity and aerodynamic improvements, allowing it to fly over 8,700 km — enough for transatlantic routes. It entered service in 2024 and is ordered by dozens of airlines for thin long-haul routes.