Twelve flights have been diverted from Changi Airport since Friday evening (Jan 10), after a monsoon surge led to prolonged rain in Singapore. They were diverted to regional airports such as Johor Bahru, Kuala Lumpur and Batam. Susan Ng and Hairianto Diman look at the logistics involved and the costs incurred when a flight is diverted with Alvin Lie, Aviation Analyst.

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