Yes, houseflies eat honey. The insects in question include among their feeding preferences sugary and sweet foods. But it is a case of a fatal attraction since honey can be like quicksand for invertebrates.
No
Yes, this is the way a fly has to eat.
Your question should be "Does a housefly eat insects?" or "Do houseflies eat insects?" Whatever your question may be, the answer is no.
Spiders Venus Fly Trap Pitcher Plant
Tarantulas will eat crickets, moths, beetle larvae (meal worms or superworms), houseflies and cockroaches.
There are no houseflies in Alaska.
Houseflies are born from maggots.
Houseflies eat sugar, decaying animals, spoiled eggs, food and flesh.
You can eat honey whenever you please. There is no specific time you must eat honey.
Houseflies can take in only liquid foods. They spit out saliva on solid foods to predigest it, and then suck it back inside. They also regurgitate partly digested matter and pass it again to the abdomen.
honey bees eat honey
The houseflies enemies, other than the human, are spiders.