The World's Longest Flights, Two Opposite Cabins: Qantas' 238-Seat A350 vs Singapore's All-Premium ULR (2026)
Quick Verdict
The split: Qantas will fly Sydney–New York from mid-2028 with 140 economy seats on board. Singapore Airlines already flies Singapore–New York and sells no economy at all.
Qantas A350-1000ULR: 238 seats — 6 first, 52 business, 40 premium economy, 140 economy. Best economy seats are the 42 Qantas Economy Plus seats at 34in pitch; the rest of the cabin is 33in. Avoid row 56, the last row in the narrowed tail with no recline and no window.
Singapore A350-900ULR: 161 seats — 67 business, 94 premium economy. Best business seats are 24A, 24K and 25A; best premium economy is 41C. Avoid 16A and 16K, which look like prime forward-cabin windows and are not.
The thing nobody is saying: Singapore’s retrofit cuts premium economy on these jets from 94 seats to 58. The cheapest cabin on the world’s longest flight is about to get roughly a third smaller.
Two airlines have now answered the same question — what kind of cabin can a human being tolerate for eighteen or nineteen hours — and they have arrived at opposite conclusions. On 23 September 2026, Qantas confirmed it will fly non-stop between Sydney and New York JFK from the middle of 2028, completing the Project Sunrise plan it started with the Sydney–London route due in October 2027. The aircraft is an Airbus A350-1000ULR carrying 238 passengers in four cabins, economy included.
Singapore Airlines has been flying the comparable distance since 2018 and has never sold an economy seat on it. Its A350-900ULRs carry 161 passengers in two cabins, business and premium economy, and that is the whole aeroplane. Within the next year or so, that aircraft is due to become more exclusive still, not less.
If you are going to be spending the better part of a day in a seat, the difference between these two philosophies is the most consequential thing about the booking. Here is what each one actually gets you, and which seats matter in both.
The two aircraft, side by side
| Qantas A350-1000ULR | Singapore A350-900ULR (today) | Singapore A350-900ULR (retrofitted) | |
|---|---|---|---|
| Total seats | 238 | 161 | 132 |
| First | 6 (1-1-1) | — | 4 |
| Business | 52 (1-2-1 staggered) | 67 (1-2-1) | 70 |
| Premium economy | 40 (2-4-2) | 94 (2-4-2, tapering to 1-4-1) | 58 |
| Economy | 140 (3-3-3) | None | None |
| Fleet | 12 on order, first due April 2027 | 7 in service | Same 7 aircraft |
One line in that table is worth pausing on. Qantas’ economy cabin alone will hold 140 people. Singapore’s entire retrofitted aircraft will hold 132. The cheapest cabin on one aeroplane is bigger than the whole of the other.
Qantas: the bet that economy can work
Sydney to New York is roughly an 18-hour flight, and Qantas has designed the cabin around that rather than simply installing its long-haul product and hoping. Chief executive Vanessa Hudson has described the cabin as built around the science of ultra-long-haul travel, which in practice means a few specific things you can see on a seat map.
The headline feature is the Wellbeing Zone, a dedicated standing area between premium economy and economy with stretch handles built into sculpted wall panels, a guided on-screen movement programme, a hydration station and refreshments. Every passenger can use it, which matters more in economy than anywhere else on the aircraft.
The cabins themselves:
- First (6 suites, 1-1-1). A two-metre flat bed plus a separate reclining armchair, and a surface that works for dining or working with a second person. Seats 1A and 1K are the forward window picks.
- Business (52 suites, 1-2-1 staggered). An 80in flat bed with a sliding privacy door, and an adjustable divider between the alternating centre pairs. Solo travellers want the even-numbered window rows: 12A, 14A, 16A, 20A, 22A. Couples want the odd-numbered centre pairs, which are the ones carrying the adjustable divider.
- Premium economy (40 seats, 2-4-2). An 8in winged privacy headrest and a calf rest, on a custom multi-layer foam system.
- Economy (140 seats, 3-3-3). A 13.3in touchscreen at every seat, and 33in pitch across more than 70% of the cabin.
That last figure is the one to plan around. More than 70% of the economy cabin is at 33in, which is ordinary long-haul pitch being asked to do an extraordinary job. The exception is Qantas Economy Plus: 42 seats at the front of the cabin with 34in pitch. One extra inch does not sound like a transformation, and over eighteen hours it is not nothing either. Those 42 seats are the single most consequential booking decision on this route for anyone not turning left.
The economy seats to avoid
The A350-1000’s fuselage narrows towards the tail, and the last row of this aircraft sits inside that taper. Row 56 does not recline and has no window. On a two-hour hop that is an irritation. On one of the longest flights in the world it is a genuinely bad night.
Separately, watch the window alignment. Rows 41, 44, 51 and 54 have misaligned windows, meaning a seat sold to you as a window seat where the window is not where your head is. If the view matters, rows 42, 49 and 52 are the ones that line up properly. Full row-by-row detail is in our Qantas A350-1000ULR seat guide.
Singapore: the bet that it cannot
Singapore Airlines runs the two longest scheduled non-stop flights in the world. SQ23/24 links Singapore and New York JFK, covering roughly 16,500km eastbound in over 19 hours. SQ21/22 links Singapore and Newark, around 15,344km in a little over 18 hours. Both are flown by the A350-900ULR, a seven-aircraft sub-fleet that also works Los Angeles.
The arithmetic behind the missing economy cabin is not mysterious. A flight at the outer edge of an airframe’s range trades payload for fuel, so the question is not whether you could fit 250 seats but whether the seats you fit can earn enough to justify carrying them that far. Singapore concluded that economy seats cannot, and built a 161-seat aircraft accordingly: 67 business in 1-2-1, and 94 premium economy in 2-4-2 that tapers to 1-4-1 in the last few rows.
Two things are worth knowing before you book it. The business seat is Singapore’s older A350 product, which has limited recline and needs a crew member to convert it into a bed — not a dealbreaker, but not the self-service suite you may be picturing. And the best seats are not the obvious ones: 24A, 24K and 25A sit mid-cabin where it stays quiet, each with two windows. In premium economy, 41C is the standout, a solo seat with a side locker and a properly aligned window.
The traps run the other way. 16A and 16K look like prime forward-cabin window seats and come with a restricted window and a lavatory immediately behind. Row 17 is the last row of the forward cabin and row 29 backs onto the rear galley area. In premium economy, avoid 42G, 42H and row 43. Our Singapore A350-900ULR seat guide has the full breakdown.
The change almost nobody has priced in
Here is the part that should change how you plan a 2027 or 2028 trip.
Singapore Airlines is partway through a S$1.1 billion retrofit of all 41 of its A350-900s, and the seven ultra-long-range jets are included. When those aircraft emerge, they will carry 4 first class suites, 70 business seats and 58 premium economy seats — 132 seats in total. First class arrives on the route for the first time. Business grows slightly, from 67 to 70.
Premium economy falls from 94 seats to 58.
That is a reduction of 36 seats, roughly a third of the cheapest cabin on the world’s longest flight, on an aircraft type with only seven examples. If you have been treating Singapore’s premium economy as the reasonable way to cross the Pacific without paying business fares, that option is about to get materially harder to find, in cash and on points alike. Booking earlier will matter more than it used to.
The timing has moved more than once. Singapore will unveil the new first and business seats at an event on 7 November 2026, with the wider A350 rollout beginning in the first quarter of 2027 and the ultra-long-range aircraft following during that year. The programme was originally meant to be further along by now and slipped on seat certification and supply chain issues, so treat those dates as intent rather than schedule.
How to tell which Singapore cabin you are getting
From the moment the first retrofitted ULR enters service until the last one is done, Singapore’s New York flights become a straightforward two-version lottery, and the two versions are not close to equivalent. The tell is the seat map, and it is unambiguous once you know what to look for:
- No first class cabin and business rows running 10–17 and 19–29? That is the current 161-seat aircraft.
- A four-seat first class cabin ahead of business? That is the retrofitted 132-seat aircraft.
- A premium economy cabin that runs to row 43? Current aircraft. The retrofitted jet’s premium economy is substantially shorter.
Check the map at the point of booking and again a few days before departure, because aircraft swaps within a seven-strong sub-fleet are exactly the sort of thing that moves quietly.
So which should you book?
| If you are… | Book | And pick |
|---|---|---|
| Paying your own way and going to New York from Australia | Qantas — it is the only one of the two that will sell you an economy seat | One of the 42 Economy Plus seats at 34in, not the 33in cabin behind it |
| Travelling as a couple in business | Qantas | An odd-numbered centre pair, which is where the adjustable divider sits |
| Travelling solo in business and want a window | Either | Qantas: even rows 12A, 14A, 16A, 20A, 22A. Singapore: 24A, 24K, 25A |
| Trying to cross in premium economy for the lowest price | Singapore, but book early | 41C while the 94-seat cabin lasts; avoid 42G, 42H and row 43 |
| Chasing a first class suite on an ultra-long-haul sector | Either, from 2027–28 | Qantas 1A or 1K; Singapore’s four suites are new to the route |
| Tall, and in economy | Qantas, with reservations | Economy Plus. Avoid row 56 at all costs, and rows 41, 44, 51, 54 if you want a real window |
Frequently asked questions
Does the world’s longest flight really have no economy class?
Correct. Singapore Airlines’ A350-900ULR, which operates Singapore–New York JFK and Singapore–Newark, carries only business and premium economy — 161 seats in total. There is no economy cabin to book at any price.
When can I actually book Qantas Sydney–New York?
Qantas has indicated tickets go on sale in August 2027, for services starting in the middle of 2028. Sydney–London is first, from October 2027. The first A350-1000ULR is due to be delivered in April 2027.
How long is the Qantas flight, and how much time does it save?
Around 18 hours non-stop. Qantas puts the saving at roughly three hours against the fastest current one-stop routing, which removes the Auckland stop.
Is Qantas economy at 33in worse than a normal long-haul flight?
No — 33in is a fairly standard long-haul pitch, and more than 70% of the cabin has it. The point is simply that the flight is far longer than the one that pitch was designed around, which is why the 42 Economy Plus seats at 34in and the Wellbeing Zone are worth factoring into the booking.
Will Singapore’s premium economy really shrink?
On the ultra-long-range aircraft, yes. Singapore Airlines has said the retrofitted ULRs will carry 4 first, 70 business and 58 premium economy seats, against 94 premium economy seats today.
Which airline has the better business class on these routes?
On paper Qantas, at least until Singapore’s retrofit lands. The Qantas suite has an 80in bed and a sliding door; Singapore’s current ULR business seat has limited recline and needs a crew member to make up the bed. Singapore’s replacement seat is due to be revealed on 7 November 2026, which will reset that comparison.
Check your own flight
Seat counts and cabin layouts on both of these aircraft are going to move over the next two years, and they will move at different speeds on different tails. Before you commit to eighteen hours in a particular seat, pull up the map for your specific flight and date: Qantas A350-1000ULR, Singapore A350-900ULR, or browse all aircraft seat guides.
Cabin configurations, routes and dates in this article reflect airline announcements as at 23 September 2026. Ultra-long-haul programmes shift; check the seat map for your own flight before booking.