How the A350-900ULR Reaches 9,700 Nautical Miles

The Airbus A350-900ULR is rated for up to 9,700 nautical miles, and a new write-up says the range comes from removing parts, not from adding fuel tanks. Here is what Airbus and other sources actually say, and where they differ.

The Airbus A350-900ULR is the long-range version of the A350-900, and Airbus describes it as having "an extended range of up to 9,700 nautical miles". That is about 18,000 km, or roughly 11,200 miles. Simple Flying published a piece on 26 October 2026 arguing that the range comes from taking parts out rather than bolting fuel tanks on. It is a fair summary of a more nuanced picture, so I went back to the primary material.

What Airbus says about the fuel

Airbus's own announcements from 2018 say the range comes from a modified fuel system that increases fuel capacity by 24,000 litres "without the need for additional fuel tanks". Airbus's delivery announcement puts the total at 165,000 litres, and Wikipedia gives the same totals, up from 141,000 litres in the standard aircraft, using extra space in the existing tanks. Airbus also gives the maximum take-off weight as 280 tonnes.

So "no extra tanks" is right. But the fuel did increase, which is a bigger story than "parts removed" alone.

What was taken out

Two things are missing compared with a typical A350-900, according to the sources I read.

The first is the forward cargo hold. Leeham News, citing Airbus's airport planning guide, says the ULR has a deactivated forward cargo compartment, and that this helps performance on ultra-long missions. Wikipedia agrees that it is disabled and adds that it can be reactivated depending on customer needs. Airbus's own pages that I read do not mention the hold at all.

The second is the economy cabin. Singapore Airlines operates the aircraft with 67 business class and 94 premium economy seats, 161 in all, according to Airbus's delivery announcement and Wikipedia's Singapore Airlines fleet table. There is no economy class.

Simple Flying also quotes figures for the freight capacity given up and for a 370-minute ETOPS approval. I could only find those in that one article, so I have left them out.

Who flies it

Singapore Airlines is the launch customer, and Airbus says it ordered seven. Wikipedia lists seven in service as of July 2026 and says Singapore Airlines is the only airline operating the variant. I found no other operator in any source. The first aircraft was delivered in September 2018, and Airbus said non-stop Singapore to New York flights would start on 11 October that year, with Los Angeles and San Francisco to follow.

Where the sources differ

The headline claim. Simple Flying frames the range as coming from removed parts. Airbus's wording is a modified fuel system and no additional tanks. Both describe the same aircraft, with different emphasis.
Flight time. Airbus says "over 20 hours non-stop" in one article. Wikipedia says up to 19 hours. I have used neither.
Delivery date. Most sources give 22 September 2018 for the first delivery, with Wikipedia saying 23 September. I have said September 2018.

The photographs

All photographs are Singapore Airlines A350-900s at New York JFK, taken from the airport viewing areas by Charles from Port Chester, New York. The airframe in the first is 9V-SGA, which two sources confirm was the first ULR delivered. The others are 9V-SGD and 9V-SGF, which carry the same livery and appear on the New York ULR flights in the Commons file titles. I have not confirmed from a second source that every registration is a ULR.

Sources

Airbus, "Ultra Long Range A350 XWB goes the distance", September 2018: https://www.airbus.com/en/newsroom/news/2018-09-ultra-long-range-a350-xwb-goes-the-distance
Airbus, "First Ultra Long Range A350 XWB rolls out of paintshop", July 2018: https://www.airbus.com/en/newsroom/press-releases/2018-07-first-ultra-long-range-a350-xwb-rolls-out-of-paintshop
Airbus, "The Ultra Long Range A350 XWB brings key destinations closer together", October 2018: https://www.airbus.com/en/newsroom/news/2018-10-the-ultra-long-range-a350-xwb-brings-key-destinations-closer-together-with
Airbus, "First Ultra Long Range A350 XWB delivered to Singapore Airlines", 22 September 2018: https://airbus.com/en/newsroom/press-releases/2018-09-first-ultra-long-range-a350-xwb-delivered-to-singapore-airlines
Leeham News, "The changes to the A350-900ULR", 28 June 2018: https://leehamnews.com/2018/06/28/the-limitations-of-the-a350-900ulr
Simple Flying, 26 October 2026: https://simpleflying.com/airbus-a350-900ulr-range-9700-nautical-miles-parts-removed-not-fuel-tanks/
Wikipedia, "Airbus A350 XWB", "Singapore Airlines fleet" and "List of Airbus A350 operators": https://en.wikipedia.org/wiki/Airbus_A350_XWB
Photographs: Charles from Port Chester, New York, via Wikimedia Commons (CC BY 2.0 and CC0)