Top 10 Longest Non-Stop Flights in the World (2025 Edition)

Nearly 19 hours in the air. 
That’s what it takes to complete the world’s longest commercial flight, a breathtaking journey between New York City and Singapore. 

In 2025, ultra-long-haul travel is no longer a niche—it’s a key part of global aviation, connecting distant business hubs and vacation hotspots with unprecedented efficiency. Thanks to next-generation aircraft like the Airbus A350-900ULR and Boeing 787-9, airlines can now operate flights lasting 17–19 hours across distances nearing 15,500 kilometers, all without a single stop. 

Whether you’re a business traveler eager to save time or an adventurer looking to skip layovers, these routes are changing the way we fly. Below, we break down the top 10 longest non-stop flights currently in operation, their unique features, and what you can expect on board. 

1. Singapore Airlines SQ23/SQ24 

Route: New York (JFK) → Singapore (SIN) 
Great circle distance: 15,349 km (8,288 nm) 
Aircraft: Airbus A350-900ULR 
Average flight time: 18 hrs 27 mins (SQ23), 18 hrs 10 mins (SQ24) 

Since November 2020, Singapore Airlines’ SQ23/SQ24 has held the coveted title of the world’s longest commercial flight. This nearly 19-hour journey is made possible by the A350-900ULR, configured exclusively for premium economy and business class passengers—there’s no standard economy onboard. Departing New York at 22:30, this flight offers travelers one of the most efficient ways to cross nearly half the globe in a single leg. 

2. Singapore Airlines SQ21/SQ22 

Route: Newark (EWR) → Singapore (SIN) 
Great circle distance: 15,344 km (8,285 nm) 
Aircraft: Airbus A350-900ULR 
Average flight time: 17 hrs 58 mins (SQ22), 18 hrs 45 mins (SQ21) 

Just five kilometers shorter than its JFK counterpart, SQ21/SQ22 offers an alternative New York–Singapore connection for travelers based closer to Newark. Like SQ23, it leverages the A350-900ULR’s ultra-long-range design, offering a two-class cabin optimized for comfort on one of the world’s most demanding routes. 

3. Qatar Airways QR921/QR920 

Route: Auckland (AKL) → Doha (DOH) 
Great circle distance: 14,535 km (7,848 nm) 
Aircraft: Airbus A350-1000 
Average flight time: 16 hrs 34 mins (QR921) 

Once the longest flight in the world, Qatar Airways’ Auckland–Doha service remains a marathon journey. The A350-1000 brings Qatar’s renowned Qsuite Business Class to the route, complete with sliding privacy doors and fully lie-flat beds. For leisure and business travelers alike, this flight provides a seamless connection between New Zealand and Qatar Airways’ extensive global network. 

4. Qantas QF9/QF10 

Route: Perth (PER) → London Heathrow (LHR) 
Great circle distance: 14,499 km (7,829 nm) 
Aircraft: Boeing 787-9 Dreamliner 
Average flight time: 16 hrs 57 mins (QF9) 

Qantas’ historic Perth–London flight was the first-ever nonstop service between Australia and the UK, launched in 2018. Covering more than 14,400 km in under 17.5 hours, this Boeing 787-9 route eliminates stopovers in Asia or the Middle East, making it a top choice for travelers seeking speed and efficiency. 

5. Qantas QF21/QF22 

Route: Dallas/Fort Worth (DFW) → Melbourne (MEL) 
Great circle distance: 14,472 km (7,814 nm) 
Aircraft: Boeing 787-9 Dreamliner 
Average flight time: 17 hrs 13 mins 

Just 27 km shorter than the Perth–London route, Qantas’ DFW–Melbourne flight connects the southern United States with Australia in one go. It’s ideal for travelers avoiding congested hubs like Los Angeles, and thanks to lie-flat business class and premium economy, it strikes a balance between comfort and practicality. 

6. Qantas QF33/QF34 

Route: Perth (PER) → Paris Charles de Gaulle (CDG) 
Great circle distance: 14,263 km (7,701 nm) 
Aircraft: Boeing 787-9 Dreamliner 
Average flight time: 16 hrs 40 mins 

Qantas’ Perth–Paris service, launched to meet growing demand for nonstop European connections, covers over 14,200 km in under 17 hours. As part of Qantas’ long-haul strategy, it’s another major milestone in expanding direct access between Australia and Europe. 

7. Air New Zealand NZ1/NZ2 & Qantas QF3/QF4 

Route: New York (JFK) → Auckland (AKL) 
Great circle distance: 14,207 km (7,671 nm) 
Aircraft: Boeing 787-9 Dreamliner 
Average flight time: 16 hrs 52 mins (NZ1) 

The New York–Auckland route is operated by both Air New Zealand and Qantas, making it a rare long-haul shared by two carriers. Air New Zealand’s Dreamliners feature Economy Skycouch seating, transforming standard seats into couch-like spaces for extra rest. Future enhancements include Skynest sleeping pods—a revolutionary concept for economy travelers, launching in 2026. 

8. Emirates EK448/EK449 

Route: Auckland (AKL) → Dubai (DXB) 
Great circle distance: 14,200 km (7,667 nm) 
Aircraft: Airbus A380-800 
Average flight time: 16 hrs 41 mins 

Emirates’ Auckland–Dubai service claims the title of the longest Airbus A380 flight in the world. Onboard the double-decker jet, premium travelers enjoy private first-class suites and an onboard lounge, while economy passengers experience one of the most spacious cabins in the sky. 

9. Singapore Airlines SQ35/SQ36 & SQ37/SQ38 

Route: Los Angeles (LAX) → Singapore (SIN) 
Great circle distance: 14,114 km (7,621 nm) 
Aircraft: Airbus A350-900ULR 
Average flight time: 16 hrs 10 mins 

Singapore Airlines operates two daily ultra-long-haul flights between Los Angeles and Singapore, both powered by the A350-900ULR. Like its New York–Singapore counterpart, the cabin is limited to business and premium economy, ensuring passengers remain comfortable on this 16-hour transpacific marathon. 

10. Air India AI175/AI176 

Route: San Francisco (SFO) → Bengaluru (BLR) 
Great circle distance: 14,004 km (7,562 nm) 
Aircraft: Boeing 777-200LR 
Average flight time: 17 hrs 22 mins 

Air India’s San Francisco–Bengaluru flight is not only the longest route operated by the airline, but also the longest Boeing 777-200LR service currently in operation. Connecting Silicon Valley with India’s tech hub, it’s an essential route for business travelers in both regions. 

What Makes These Flights Possible? 

Ultra-long-haul aviation has only been made feasible by next-gen aircraft like the Airbus A350 and Boeing 787 Dreamliner, which pair lightweight composite structures with fuel-efficient engines. These technological advances allow airlines to bypass traditional hubs, cutting down overall travel time and enhancing passenger convenience. 

How to Survive (and Enjoy) Ultra-Long-Haul Flights 

We asked medical experts for their top advice on thriving at 35,000 feet: 

• Stay hydrated: Limit caffeine and alcohol to reduce dehydration. 
• Move often: Stretch and walk the aisles every 2–3 hours. 
• Sleep smart: Adjust your schedule to match your destination’s time zone before departure. 
• Pack comfort essentials: A neck pillow, sleep mask, and noise-canceling headphones make a world of difference. 

The Future of Ultra-Long-Haul Travel 

Qantas’ Project Sunrise is set to take this even further. In 2026, the airline plans to launch Sydney–London and Sydney–New York nonstop flights—pushing flight times beyond 20 hours. 

From Singapore Airlines’ marathon New York–Singapore journey to Qantas’ groundbreaking routes, these flights are rewriting the rules of global travel. They’re more than just transportation—they’re a testament to aviation’s progress, bringing the world closer than ever before.