{"id":24268641,"date":"2026-09-23T15:45:59","date_gmt":"2026-09-23T13:45:59","guid":{"rendered":"https:\/\/migflug.com\/afterburner\/why-airlines-kill-their-longest-routes-ultra-long-haul-economics\/"},"modified":"2026-09-23T15:48:16","modified_gmt":"2026-09-23T13:48:16","slug":"why-airlines-kill-their-longest-routes-ultra-long-haul-economics","status":"publish","type":"post","link":"https:\/\/migflug.com\/afterburner\/de\/why-airlines-kill-their-longest-routes-ultra-long-haul-economics\/","title":{"rendered":"Why Airlines Kill Their Longest Routes: The Ultra-Long-Haul Maths"},"content":{"rendered":"\n<style>.et_pb_title_container h1.entry-title { padding-top: 40px !important; }<\/style>\n\n\n\n<p class=\"wp-block-paragraph\">Every few years an airline announces the world&rsquo;s longest flight, collects the headlines, and then quietly kills it. Singapore Airlines did it twice. Air Canada is doing it right now with Vancouver to Singapore. Qantas is about to do the opposite and launch two of them.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The pattern is not incompetence. Ultra-long-haul routes obey a set of physical and commercial constraints that make them marginal by construction. Understanding those constraints explains every cancellation on the list, and also why the record keeps getting broken anyway.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">It comes down to four things: the fuel you burn carrying fuel, the payload you cannot carry, the crew you must carry instead, and the aircraft you cannot use for anything else that day.<\/p>\n\n\n\n<div style=\"background:#f5f6f8;border-left:4px solid #5C91FF;padding:18px 22px;margin:24px 0\"><p style=\"margin:0 0 10px;font-weight:700;font-size:18px;color:#0d1117\">Quick Facts<\/p><p style=\"margin:4px 0\"><strong>Definition:<\/strong> Ultra-long-haul generally means a scheduled sector over about 16 hours or 7,500 nautical miles<\/p><p style=\"margin:4px 0\"><strong>The first modern attempt:<\/strong> Singapore Airlines, Airbus A340-500, Singapore to Los Angeles from early 2004 and Singapore to Newark from June 2004<\/p><p style=\"margin:4px 0\"><strong>How that ended:<\/strong> Los Angeles dropped in October 2013, Newark suspended from 23 November 2013<\/p><p style=\"margin:4px 0\"><strong>The comeback:<\/strong> Singapore to Newark returned in October 2018 with the Airbus A350-900ULR<\/p><p style=\"margin:4px 0\"><strong>The ULR trade:<\/strong> 161 seats instead of 253, and no economy cabin at all<\/p><p style=\"margin:4px 0\"><strong>A350-900ULR range:<\/strong> 9,700 nautical miles, from a modified fuel system rather than auxiliary tanks<\/p><p style=\"margin:4px 0\"><strong>Crew:<\/strong> Sectors beyond about 16 hours need a double crew, four pilots and a full relief cabin crew<\/p><\/div>\n\n\n\n<h2 style=\"padding-top:22px\">One: you burn fuel to carry fuel<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Fuel has mass. The kerosene an aircraft will burn in hour eighteen has to be lifted, accelerated and carried for the previous seventeen hours, and lifting it costs fuel of its own. On a six-hour sector this is a rounding error. On an eighteen-hour sector it is a meaningful share of the total burn.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The consequence is that fuel burn does not scale linearly with distance. Doubling the sector length costs more than double the fuel, which is precisely why two eight-hour sectors with a stop in between are usually cheaper than one sixteen-hour nonstop. The nonstop wins on time and on what passengers will pay for it, not on cost.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\" style=\"margin:0 0 24px;width:100%\"><img decoding=\"async\" class=\"skip-lazy\" data-no-lazy=\"1\" loading=\"eager\" width=\"1024\" src=\"https:\/\/migflug.com\/afterburner\/wp-content\/uploads\/sites\/4\/2026\/09\/singapore-airlines-a340-500-los-angeles.jpg\" alt=\"Singapore Airlines Airbus A340-500 at Los Angeles\" style=\"width:100%;height:auto;max-width:100%;display:block\"><figcaption style=\"font-size:13px;color:#777;text-align:center;margin-top:6px;font-style:italic\">The A340-500 at Los Angeles. Four engines, enormous range, and a fuel bill that killed the route when oil prices moved. Photo: Wikimedia Commons \/ CC BY 4.0.<\/figcaption><\/figure>\n\n\n\n<div style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;margin:24px 0\"><iframe class=\"skip-lazy\" data-no-lazy=\"1\" loading=\"eager\" src=\"https:\/\/www.youtube.com\/embed\/fTyUE162lrw\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0\" allowfullscreen><\/iframe><\/div>\n\n\n\n<h2 style=\"padding-top:22px\">Two: the payload you cannot carry<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">An aircraft has a maximum takeoff weight. Fuel and payload share it. Fill the tanks for an eighteen-hour sector and there is less weight left for passengers, bags and freight, which is where the revenue is.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Singapore Airlines made the trade explicit. Its standard long-haul A350-900 carries 253 passengers in three cabins. Its A350-900ULR, the aircraft that flies to New York, carries 161 in two, and has no economy cabin at all. Ninety-two seats were deleted so the aeroplane could reach the other end.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The belly is the other casualty. Freight is a significant revenue line on ordinary long-haul flying, and ultra-long-haul sectors typically leave little or no weight margin for it. The route loses a revenue stream that shorter rotations keep.<\/p>\n\n\n\n<div style=\"margin:24px 0\"><iframe id=\"mfg-ulhpen\" class=\"skip-lazy\" data-no-lazy=\"1\" loading=\"eager\" src=\"https:\/\/migflug.com\/afterburner\/wp-content\/uploads\/sites\/4\/2026\/09\/ultra-long-haul-payload-penalty-a350-ulr.html\" width=\"100%\" height=\"560\" style=\"width:100%;border:0;display:block;overflow:hidden\" scrolling=\"no\" title=\"The ultra-long-haul payload penalty\"><\/iframe><\/div>\n<script>window.addEventListener(\"message\",function(e){if(e.origin!==\"https:\/\/migflug.com\")return;var d=e.data;if(!d||!d.mfgFrame||!d.id||!d.h)return;var f=document.getElementById(\"mfg-\"+d.id);if(!f)return;var n=Math.max(200,Math.min(d.h,4000));if(Math.abs(parseInt(f.style.height,10)-n)>2)f.style.height=n+\"px\";},false);function mfgNudge(){var l=document.querySelectorAll(\"iframe[id^=mfg-]\");for(var i=0;i<l.length;i++){var f=l[i];var h=parseInt(f.style.height,10)||f.offsetHeight||560;f.style.height=(h+1)+\"px\";}}setTimeout(mfgNudge,1500);setTimeout(mfgNudge,3500);window.addEventListener(\"resize\",mfgNudge);<\/script><div style=\"background:#f8f9fa;border-left:4px solid #5C91FF;padding:20px 22px;margin:18px 0 24px;font-size:16px;line-height:1.7;display:flex;gap:20px;align-items:flex-start\"><div><em>&ldquo;We have pushed the limits with this highly advanced new aircraft to extend long-range flying to new lengths. The A350-900ULR will bring more convenience and comfort to our customers and will enable us to operate ultra-long-range flights in a commercially viable manner.&rdquo;<\/em><div style=\"margin-top:10px;font-size:14px;color:#555\"><strong>Goh Choon Phong<\/strong> &mdash; Chief executive, Singapore Airlines, September 2018<\/div><\/div><\/div>\n\n\n\n<h2 style=\"padding-top:22px\">Three: you carry a second crew instead<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Flight time limitations mean a sector beyond roughly sixteen hours needs an augmented crew. Four pilots instead of two, a full relief cabin crew, and certified rest facilities that occupy cabin volume which could otherwise be sold.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Those people also have to be positioned, hotelled and rested at the far end, on a route that by definition operates at most once a day. Crew cost per available seat kilometre on an ultra-long-haul rotation is structurally worse than on a route the same aircraft could fly twice.<\/p>\n\n\n\n<div style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;margin:24px 0\"><iframe class=\"skip-lazy\" data-no-lazy=\"1\" loading=\"eager\" src=\"https:\/\/www.youtube.com\/embed\/DNCvGFwBG3U\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0\" allowfullscreen><\/iframe><\/div>\n\n\n\n<h2 style=\"padding-top:22px\">Four: the aircraft does one thing all day<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Airlines earn money on aircraft utilisation. A widebody flying two eight-hour sectors a day produces sixteen hours of revenue flying. The same airframe on an eighteen-hour nonstop produces eighteen, then sits on the ground at the far end waiting for its return slot and its crew rest.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Worse, the fleet is often bespoke. The A340-500 and the A350-900ULR exist for these missions and are awkward anywhere else. When the route stops working, the airline is left holding aircraft it cannot easily redeploy. Singapore Airlines had five A340-500s; when Newark and Los Angeles came off in 2013 the aircraft went back to Airbus.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\" style=\"margin:0 0 24px;width:100%\"><img decoding=\"async\" class=\"skip-lazy\" data-no-lazy=\"1\" loading=\"eager\" width=\"1024\" src=\"https:\/\/migflug.com\/afterburner\/wp-content\/uploads\/sites\/4\/2026\/09\/singapore-airlines-a350-900-ultra-long-range.jpg\" alt=\"Singapore Airlines Airbus A350-900 taxiing\" style=\"width:100%;height:auto;max-width:100%;display:block\"><figcaption style=\"font-size:13px;color:#777;text-align:center;margin-top:6px;font-style:italic\">The A350-900 family made the Singapore to New York nonstop viable again in 2018 where the A340-500 could not sustain it. Photo: Wikimedia Commons \/ CC BY 2.0.<\/figcaption><\/figure>\n\n\n\n<h2 style=\"padding-top:22px\">So why do airlines keep doing it?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Because a subset of passengers will pay a very large premium to avoid a connection, and because ultra-long-haul cabins are configured almost entirely for those passengers. Singapore&rsquo;s ULR is not a bad economy aircraft; it is a very good premium one that happens to have no economy at all.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The routes die when that premium demand is thinner than forecast, or when fuel moves against them, or when the geography stops making sense. Those are the three failure modes, and they explain almost every cancellation, including the one Air Canada has just announced for Vancouver to Singapore.<\/p>\n\n\n\n<div style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;margin:24px 0\"><iframe class=\"skip-lazy\" data-no-lazy=\"1\" loading=\"eager\" src=\"https:\/\/www.youtube.com\/embed\/LHunQ9d2vFM\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0\" allowfullscreen><\/iframe><\/div>\n\n\n\n<div style=\"background:#f8f9fa;border-left:4px solid #5C91FF;padding:20px 22px;margin:18px 0 24px;font-size:16px;line-height:1.7;display:flex;gap:20px;align-items:flex-start\"><div><em>&ldquo;An ultra-long-haul route is a premium product sitting on a commodity cost base. When the premium holds, it works. When it does not, nothing else about the flight can save it.&rdquo;<\/em><div style=\"margin-top:10px;font-size:14px;color:#555\"><strong>Afterburner<\/strong> &mdash; Editorial note, not a third-party quotation<\/div><\/div><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Qantas is betting that Project Sunrise changes the equation with an aircraft designed from the outset for the mission. It might. The A350-900ULR already proved the trick can be repeated once. What nobody has proved is that an ultra-long-haul route can survive a bad fuel cycle.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><em>Sources: Airbus A350 and A340 programme data; Singapore Airlines fleet and cabin configurations; ch-aviation and Aviation Week reporting on the 2013 withdrawal of Singapore&rsquo;s A340-500 services; Skift, &ldquo;Singapore Airlines Stops Newark-Changi Flight&rdquo;, November 2013.<\/em><\/p>\n\n\n\n<style>.mfq{margin:34px 0 8px}.mfq h2{font:26px\/1.3 \"Gilroy semiBold\",Helvetica,Arial,sans-serif;color:#0d1117;padding-top:22px;margin:0 0 6px}.mfq .qa details{border-top:1px solid #5C91FF;margin:0;padding:0}.mfq .qa details:last-of-type{border-bottom:1px solid #e2e7ee}.mfq .qa summary{cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:16px;padding:22px 26px;font:18px\/1.7 \"Gilroy semiBold\",Helvetica,Arial,sans-serif;color:#0d1117}.mfq .qa summary::-webkit-details-marker{display:none}.mfq .qa summary::after{content:\"+\";font:24px Helvetica,sans-serif;color:#3568e0;flex:0 0 auto}.mfq .qa details[open] summary::after{content:\"\\2013\"}.mfq .qa details:hover summary{color:#3568e0}.mfq .qa .a{font:16px\/1.7 \"Gilroy regular\",Helvetica,Arial,sans-serif;color:#454e5e;padding:0 26px 24px}.mfq .qa .a a{color:#3568e0}@media(max-width:680px){.mfq .qa summary{padding:18px 14px;font-size:17px}.mfq .qa .a{padding:0 14px 20px}}<\/style>\n\n\n<section class=\"mfq\"><h2>Frequently Asked Questions<\/h2><div class=\"qa\"><details open><summary>Why do airlines cancel their longest routes?<\/summary><div class=\"a\">Because ultra-long-haul sectors burn fuel to carry fuel, sacrifice seats and cargo to make room for that fuel, need a double crew, and tie an aircraft up for a whole day on one rotation. The route depends on premium demand holding up against that structural cost base.<\/div><\/details><details><summary>What is the fuel-to-carry-fuel penalty?<\/summary><div class=\"a\">The kerosene an aircraft will burn in its final hours has to be lifted and carried for the whole flight, and lifting it costs fuel. Fuel burn therefore rises faster than distance, which is why two shorter sectors are usually cheaper to operate than one long one.<\/div><\/details><details><summary>Why does the Singapore to New York flight have no economy class?<\/summary><div class=\"a\">Weight. Singapore Airlines configures its A350-900ULR with 161 seats in business and premium economy only, against 253 in three cabins on its standard long-haul A350-900. Deleting the economy cabin saves the weight the aircraft needs for fuel.<\/div><\/details><details><summary>How does the A350-900ULR get its extra range?<\/summary><div class=\"a\">From a modified fuel system that increases usable fuel within the existing tank structure, rather than from auxiliary tanks. Airbus quotes a range of 9,700 nautical miles for the variant.<\/div><\/details><details><summary>Why did Singapore Airlines drop its A340-500 ultra-long-haul routes in 2013?<\/summary><div class=\"a\">The four-engined A340-500 was expensive to operate and the economics did not survive the fuel prices of the period. Singapore to Los Angeles ended in October 2013 and Singapore to Newark was suspended from 23 November 2013. Newark returned in 2018 with the far more efficient A350-900ULR.<\/div><\/details><details><summary>Do ultra-long-haul flights carry cargo?<\/summary><div class=\"a\">Very little, and often none. Fuel and payload share the same maximum takeoff weight, so a sector flown near maximum range typically leaves no weight margin for freight. That removes a revenue line that ordinary long-haul flying relies on.<\/div><\/details><details><summary>How many pilots fly an ultra-long-haul sector?<\/summary><div class=\"a\">Usually four. Flight time limitations require an augmented crew beyond roughly sixteen hours, along with a relief cabin crew and certified onboard rest facilities that take up sellable cabin space.<\/div><\/details><\/div><\/section>\n\n\n<script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Why do airlines cancel their longest routes?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Because ultra-long-haul sectors burn fuel to carry fuel, sacrifice seats and cargo to make room for that fuel, need a double crew, and tie an aircraft up for a whole day on one rotation. 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Flight time limitations require an augmented crew beyond roughly sixteen hours, along with a relief cabin crew and certified onboard rest facilities that take up sellable cabin space.\"}}]}<\/script><div style=\"background:#f0f4ff;border-left:4px solid #5C91FF;padding:16px 20px;margin:32px 0 8px\"><p style=\"margin:0 0 8px;font-weight:600;color:#333\">Related Posts<\/p><p style=\"margin:4px 0\"><a href=\"https:\/\/migflug.com\/afterburner\/air-canada-vancouver-singapore-route-cancelled-january-2027\/\">Air Canada Kills Its Longest Route After Under Three Years<\/a><\/p><p style=\"margin:4px 0\"><a href=\"https:\/\/migflug.com\/afterburner\/qantas-sydney-new-york-nonstop-project-sunrise-2028\/\">Qantas Confirms Sydney to New York Nonstop for 2028<\/a><\/p><p style=\"margin:4px 0\"><a href=\"https:\/\/migflug.com\/afterburner\/etops-explained-engines-turn-or-passengers-swim\/\">Engines Turn or Passengers Swim<\/a><\/p><p style=\"margin:4px 0\"><a href=\"https:\/\/migflug.com\/afterburner\/great-circle-routes-why-pacific-flights-curve-north-past-alaska\/\">Great Circle Routes: Why Pacific Flights Curve North Past Alaska<\/a><\/p><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Fuel burned to carry fuel, 92 seats deleted, four pilots instead of two and an aircraft that flies once a day. The structural reasons record-breaking routes keep dying.<\/p>","protected":false},"author":27,"featured_media":24267570,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"editor_notices":[],"footnotes":""},"categories":[665],"tags":[],"class_list":["post-24268641","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-aviation-world"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Why Airlines Kill Their Longest Routes: The Ultra-Long-Haul Maths<\/title>\n<meta name=\"description\" content=\"Fuel burned to carry fuel, 92 seats deleted, four pilots instead of two. 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