Long-haul flights are big business for airlines these days.
Last week, Singapore Airlines (SIA) launched the world's longest commercial flight - a 19-hour route from Singapore to Newark in the United States. The airline will also launch direct flights from Singapore to Los Angeles next month.
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A version of this article appeared in the print edition of The Sunday Times on October 14, 2018, with the headline How to survive a long-haul flight. Subscribe