The Free Food Request You Never Realized You Could Make On A Plane - Tasting Table
Briefly

Airlines may provide extra meals upon request, particularly if there are leftovers after the initial service. Virgin Atlantic suggests that passengers can ask for additional food like hot meals or snacks, creating a possibility of avoiding food waste. Other airlines have similar policies, but passengers should be polite, ask later in the service, and understand limitations, especially regarding class differences. The trend encourages asking for meals if hungry, especially in cases of delays or small portion sizes.
If we have some left at the end of service...we can always offer another.
Flight attendants will be happy to give you the extra meal after the service is done, because they know it will be thrown after landing anyway.
You shouldn't feel shy about asking for an extra meal; just remember to say please and thank you.
You shouldn't expect to be handed a free first-class meal if you're sitting in economy.
Read at Tasting Table
[
|
]