before 2001

Before the September 11 attacks in 2001, first class passengers were often provided with full sets of metal cutlery. Afterward, common household items were evaluated more closely for their potential use as weapons on aircraft, and both first class and coach class passengers were restricted to plastic utensils. Some airlines switched from metal to all-plastic or plastic-handled cutlery during the SARS outbreak in 2003, since the SARS virus transfers from person to person easily, and plastic cutlery can be thrown away after use. Many airlines later switched back to metal cutlery.
In May 2010, concerns were raised in Australia and New Zealand over their respective flag carriers, Qantas and Air New Zealand, reusing their plastic cutlery for international flights between 10 and 30 times before replacement. Both airlines cited cost saving, international quarantine, and environmental as the reasons for the choice. Both have also said that the plastic cutlery is commercially washed and sterilized before reuse.^[4][5][6] Reusing plastic tablewares though is a regular practice among many airliners and food caterers