How do I control house flies?

Hi everyone. So I just moved into a new house with several roommates for my final year of university. I have a nice window that I like to keep open because I enjoy fresh air.

However, to open the window and close it, the screen must be off. So far, maybe 5 flies have flown in my room, and they're just buzzing around. I want to keep the screen off, so I can use the window.

Does anyone have any methods to control flies and kill their tiny fly asses so they don't annoy me? I've considered Venus fly traps, but I worry that those would just attract more flies.

Thanks in advance for any help.