I'm on a flight from Puerto Princesa to Manila this Saturday. Can I bring on board mangos? There were some restrictions earlier due to some weevil thing but I'm not sure if they've been lifted.
Flying from Palawan to Manilla is classed as a domestic flight, because you are not leaving the Philippines.
For this flight, you will need to go through customs at Manilla unlike other domestic flights due to the set-up of the airport. However, this will not be a problem as you are not importing mangoes into the country, just moving them across the country.
The place where the problem may have occurred is in Singapore, as there are tight regulations on the importation of food products. The rules for fruit and vegetables are as follows;
Each person is allowed a small, reasonable quantity (i.e. hand-carried size) of fruit and vegetable products for personal consumption
However, a phytosanitary certificate from the country's competent authority is required for fresh fruits and vegetables from the American Tropics, which includes: Barbados, Belize, Bolivia, Brazil, Colombia, Cuba, Costa Rica, Dominica, Dominican Rep, Ecuador, El Salvador, French Guyana, Grenada, Guadeloupe, Guatemala, Guyana, Haiti, Honduras, Jamaica, Martinique, Mexico, Nicaragua, Panama, Paraguay, Peru, Puerto Rico, St Lucia, St Vincent and the Grenadines, Suriname, Trinidad and Tobago, Venezuela, Virgin Islands
In short - it is okay to import mangoes into Singapore for personal use from Manilla, as this is not one of the countries stated above. Only a reasonable quantity is allowed into the country - the question stated it would be a carry on item, so this is a suitable quantity.
There should potentially be no problem with mangoes going on board an aircraft as a carry on item, as long as it fits in with your airline's regulations. These can usually be found on their website.
If you are unsure of regulations, it is always best to contact your airline before departure, rather than get into a sticky situation aboard.
There is a current infestation of mangoes in Palawan, so they are not allowed to be brought outside of Palawan to anywhere. I read that at the airport in El Nido Palawan just recently, July 2019.