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Today’s ultra-long-haul flights represent some of the greatest marvels of modern commercial aviation. In the 21st century, we can finally afford to fly nonstop city pairs spanning more than 8,000 miles (12,875 kilometers), flown daily by advanced widebodies like the Airbus A350. For airlines, these routes are high-stakes showcases of operational planning, efficiency, and comfort. For passengers, these journeys push the boundaries of endurance, service, and the onboard experience. We will explore in our article the longest scheduled non-stop Airbus A350 flights in the world, ranked by distance and time, and tell you what life is like on board.
This ranking uses Cirium and FlightAware data to determine the longest A350-operated flights currently scheduled. All flights are nonstop, regularly scheduled passenger services using Airbus A350 variants. The distance determines the list order, but we also included approximate scheduled flight times, airline cabin and service highlights, and what makes each long haul unique, if you dare to travel on one of them.
7
Atlanta – Johannesburg
Over 14 hours
Delta Air Lines’ nonstop service between Atlanta (ATL) and Johannesburg (JNB), available five days a week, ranks sixth by distance, with an average of 8,433 miles (13,572 kilometers) according to Cirium data. Operated with the Airbus A350-900 — Delta’s flagship for many long-haul routes, this flight connects the southeastern United States directly with South Africa, bypassing European intermediate stops that were once the norm.
Flight-tracking apps report scheduled durations of roughly 15 hours for this nonstop flight in each direction, influenced by Atlantic winds.
Details on onboard service offerings for this specific flight are part of the airline’s standard long-haul A350 experience, which includes lie-flat business class seats, Delta Premium Select (premium economy), and Delta One service. You can find Delta flight schedules and book this flight on the official website.
Delta’s A350 cabin features state-of-the-art in-flight entertainment, connectivity options, and ergonomic seating across cabins. Business class passengers enjoy fully flat beds, premium bedding, and elevated dining options, while Premium Select provides wider seats with more recline and enhanced meal service. Combined with Delta’s Sky Priority benefits at hubs like ATL, this long-haul flight aims to preserve comfort during its extended flight time.
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6
Singapore – San Francisco
Over 14 hours
Ranking fifth by distance at 8,440 miles (13,583 kilometers), 
Singapore Airlines’ daily Singapore (SIN)–San Francisco (SFO) service is notable for its large directional time difference. While the westbound SIN to SFO leg typically clocks in at around 14–15 hours, the longer eastbound return from San Francisco to Singapore can stretch beyond 17 hours due to Pacific wind patterns and routing inefficiencies.
Singapore Airlines equips these ultra-long services with modern Airbus A350-900 aircraft. While not the specialized ULR variant (which is reserved for the longest routes), the standard A350-900 still offers an excellent onboard experience, including business class suites with lie-flat beds, premium economy with more legroom, and comprehensive in-flight entertainment plus Wi-Fi options.
Singapore Airlines describes its long-haul passenger experience as featuring improved cabin environment systems designed to reduce fatigue, atmospheric lighting to lessen jet lag, and cuisine that reflects global tastes. Its nonstop long flights to the US are well documented in passenger reports and the airline’s global schedule. Despite the long distance, many passengers feel relaxed and refreshed upon arrival.
5
Singapore – Los Angeles
Over 15 hours
Singapore Airlines’ daily Singapore (SIN) –Los Angeles (LAX) route stretches 8,758 miles (14,095 kilometers), earning fourth place in our ranking. Operated by an Airbus A350-900, this is another trans-Pacific nonstop flight that connects Southeast Asia to the US West Coast, often with scheduled flight times of 15 to 16 hours, though weather and routing can affect the exact time. At the same time, the route from LAX to SIN usually takes between 16 and 17 hours for the same reason the flight from SFO to SIN takes longer.
Singapore Airlines is known for its exceptional long-haul product across cabins. In business class, lie-flat seats with direct aisle access, curated menus, and international wine pairings are staple features. Premium economy offers wider seats and upgraded meal service compared to standard economy, while the latter still benefits from an award-winning in-flight entertainment system and attentive cabin service.
Singapore’s Airbus A350 aircraft include Wi-Fi availability, personalized dining, and the KrisWorld entertainment catalog. This route’s distance and duration pose a persistent challenge even for seasoned long-haul travelers, but Singapore Airlines’ onboard experience ensures your comfort throughout these long flights.
4
Doha – Los Angeles
Over 15 hours
At an average of 8,301 miles (13,360 kilometers), 
Qatar Airways’ daily service between Doha (DOH) and Los Angeles (LAX) sits at the bottom of this elite group but is still one of the longest Airbus A350 flights in regular operation today. The route is typically operated by the Airbus A350-1000, a stretched A350 variant capable of carrying more passengers and payload while maintaining excellent fuel efficiency.
According to FlightAware data, scheduled flight times for DOH–LAX often exceed 15 hours, with the westbound leg to California generally longer due to prevailing westerly winds across Asia and the North Pacific. This nonstop service connects the Middle East with the US West Coast without the need for an intermediate stop, offering convenience and time savings for both leisure and business travelers.
Qatar Airways’ long-haul experience is widely praised for its service and onboard comfort. Economy, Business, and First classes are available on many A350-1000 long-haul flights, with features such as lie-flat seats in premium cabins, signature dining, and in-flight entertainment systems. You can find out more by visiting the official Qatar Airways website and discovering its unique long-haul experience.
3
Shenzhen to Mexico City (one-way)
Over 15 hours
China Southern Airlines’ nonstop flight from Shenzhen (SZX) to Mexico City (MEX) covers an average distance of 8,778 miles (14,127 kilometers) — one of the longest A350 routes linking Asia and Latin America. Although flights typically operate about three times weekly rather than daily, this connection represents a milestone in ultra-long-haul service outside traditional hub networks.
Trip data from flight aggregators suggests a typical duration of around 15 hours and 15 minutes for the SZX→MEX nonstop, although published timetables can vary.
Interestingly, this nonstop flight is possible only in one direction. The flight from Shenzhen to Mexico City (flight number CZ8031) departs from Shenzhen and lands in Mexico City with no stops — it’s a true nonstop long‑haul flight of about 14,000 km and 15-16 hours. Meanwhile, the return flight is not nonstop. Instead, China Southern schedules it with a technical stop in Tijuana (to address overweight/long‑haul fuel considerations) before continuing to Shenzhen, even though passengers typically do not disembark there. Because of this, some flight search engines or airline data systems show no “direct” return flight — they treat the return as a different type of service with a stop, not a pure nonstop leg.
The Mexico City airport is at a high altitude and with warm conditions, which reduces aircraft performance (i.e., maximum takeoff weight). This can make flying nonstop westward back to China with enough fuel and payload more challenging, so the aircraft may need to refuel at Tijuana before crossing the Pacific. That’s a common operational pattern on very long routes, especially at airports with performance constraints.
China Southern’s official website provides booking for this route specifically. Passengers can expect service consistent with China Southern’s long-haul A350 experiences: complimentary meals, in-flight entertainment, and standard international seat classes.
This service underscores how the A350-900’s extended range enables carriers to connect cities that would otherwise require stops in Europe or the US — blending commercial and cultural hubs across far-flung continents.
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2
Newark – Singapore
Over 17.5 hours
Singapore Airlines’ Newark (EWR)-Singapore (SIN) service, available six days a week, ranks second by average distance at 9,484 miles (15,263 kilometers), operated with the Airbus A350-900ULR — a special Ultra Long Range version of the A350 designed for extended nonstop missions. These ULR aircraft omit economy class in favor of business and premium economy cabins only, to reduce weight and increase range.
The airline launched the A350-900ULR fleet in 2018 to operate its flagship routes, including Newark and New York JFK, with block times on the Newark service often exceeding 18 hours. Singapore Airlines commemorated this launch as a milestone in global aviation, symbolizing a shift toward sustainable ultra-long nonstop flights.
Onboard, passengers on these ULR flights enjoy Singapore Airlines’ signature long-haul service, including gourmet meals, in-flight entertainment with extensive choices, and attentive cabin crews trained for ultra-long missions. The cabin atmosphere, enhanced by advanced air systems and lighting designed to reduce jet lag, reflects the airline’s commitment to comfort, even on flights that extend close to a full day.
1
New York – Singapore
Over 18 hours
Taking the top spot is Singapore Airlines’ daily New York (JFK)-Singapore (SIN) route, the longest Airbus A350 flight in regular commercial service, with an average distance of 9,487 miles (15,268 kilometers). This ultra-long-range route is flown with the Airbus A350-900ULR configuration, marking it as a pinnacle of nonstop airline capability.
While actual flight durations vary with winds and routing, scheduled block times for this service often exceed 18 hours — making it one of the longest scheduled flights in the world. Historical data shows the original service from Newark clocked in around 17h52m on its inaugural flight, and later timetables reflect similar ultra-long durations. Meanwhile, the service to neighboring JFK often reaches 18h15m, as can be seen on FlightAware.
Unlike typical long-haul flights, the JFK–SIN ULR service features only two cabin classes: business and premium economy, with no standard economy class seating on the aircraft. This configuration allows the airline to reduce weight and optimize for range, while still delivering Singapore Airlines’ renowned service standard — including culinary offerings, award-winning KrisWorld entertainment, and cabin ambiance designed for long-haul wellness. Visit Singapore Airlines to check all their long-haul cabin features and book the world’s longest flights!
