Singapore Airlines has long been one of the leading ultra-long-haul airlines in the world, and its Airbus A350 fleet has become pivotal to maintaining this reputation. The airline is the operator of the world’s longest scheduled nonstop commercial service — a 19-hour-plus flight between Singapore Changi Airport (SIN) and New York JFK Airport (JFK) that it has flown since 2020 — and operates several more extremely long routes out of its SIN hub.
Looking at data from aviation analytics company Cirium for July-December 2026, Singapore Airlines will be flying a total of 11 A350 routes with a block time of 14 hours or above, including a new route for 2026 that will take passengers all the way to Spain — this will be the airline’s connection with Madrid, a city it is returning to after 22 years away.
Inside Singapore Airlines’ Ultra-Long A350 Routes In 2026
The Singaporean flag carrier is flying its A350 fleet across the world, with its longest routes including destinations in the United States, Italy, Spain, South Africa, and the United Kingdom. Its two longest A350 routes — which are also the two longest scheduled commercial flights in the world — are both from Singapore to New York.
The longest is the aforementioned SIN-JFK service, which has a maximum block time of 19 hours and 15 minutes, followed by SIN to Newark (EWR), which is slightly shorter at 19 hours and ten minutes. Both of these services see a daily A350 flight — these are handled by Singapore Airlines’ special subfleet of Airbus A350-900ULR (Ultra Long Range) jets, which were designed with modified fuel tanks for an additional 24,000 liters (6,340 US gallons) of fuel capacity.
Its next three longest A350 routes are also to the US — these are Los Angeles International Airport (LAX), San Francisco International Airport (SFO) and Seattle-Tacoma International Airport (SEA), all with a block time of between 17 and 18 hours. One of its most exciting routes in 2026 comes in sixth place, with the return of Madrid Barajas Airport (MAD) to SIA’s network after more than two decades. It last flew to Madrid in 2004 and will return in October with a five-times-weekly service that includes a stop in Barcelona-El Prat Airport (BCN).
Singapore Airlines deploys the A350 on multiple European routes, sharing duties with the Airbus A380, Boeing 777 and Boeing 787 on some routes. This includes its flights to Barcelona via Milan Malpensa Airport (MXP), and services to three UK destinations – London Heathrow Airport (LHR), London Gatwick Airport (LGW) and Manchester Airport (MAN).
Singapore (SIN) – Barcelona (BCN) – Madrid (MAD)
Singapore (SIN) – Milan Malpensa (MXP) – Barcelona (BCN)
Singapore (SIN) – Johannesburg (JNB) – Cape Town (CPT)
Both Heathrow and Manchester get a daily service with the A350, while Gatwick can see up to two daily flights on peak days. All three of these UK routes have a block time of around 14 hours and 30 minutes. The upcoming Madrid flights will be an extension of the carrier’s existing Barcelona service, while the Milan-Barcelona fifth freedom service will be withdrawn once the new routing launches in October.
Discover the world’s carrier’s longest flights that keep you in the air for most of the day…
SIA’s long-haul A350 configuration is fitted with 253 seats across three cabin classes — 42 business class seats in a 1-2-1 layout, 24 premium economy seats in a 2-4-2 layout, and 187 economy seats in a 3-3-3 configuration. This A350 layout is distinct from its seven A350-900ULR jets, which can accommodate just 161 passengers in a two-class layout of 67 business class and 94 premium economy seats, with no economy cabin at all.
As per data from ch-aviation, Singapore Airlines operates a total of 65 A350-900s, making it the most numerous aircraft type in its fleet ahead of the Boeing 787 Dreamliner. The carrier welcomed delivery of its first A350 over a decade ago, before taking delivery of the world’s first A350-900UKR in 2018.
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