Mary Ann Anderson The Washington Post

As long flights go, Singapore Airlines' epic almost-19-hour, 9,534-mile journey from Newark to Singapore was once the standard-bearer against which all others were measured. But the all-business-class Flight 21 was scrubbed in 2013, some nine years after its first voyage in 2004. The airline had sold its ultra-long-range A340-500 aircraft, and no o...

As long flights go, Singapore Airlines' epic almost-19-hour, 9,534-mile journey from Newark to Singapore was once the standard-bearer against which all others were measured. But the all-business-class Flight 21 was scrubbed in 2013, some nine years after its first voyage in 2004. The airline had sold its ultra-long-range A340-500 aircraft, and no o...