Sure looks like aphids but they aren't indoor critters. Do you have houseplants? Or a hole in your screen and a buggy plant just outside?

These do not have characteristics of biting insects. Picture with a coin would help for sizing and ID.

Yep, aphids on the wing. They are attracted to lights and are happy to sneak inside. I'd check all of the plants in the vicinity, inside and out, for an aphid population.

Aphids overwinter as egg hidden in the nooks and crannies of plants. As the temperatures warm up, they hatch in large numbers....many of them with wings in order to find suitable food.

It would be easy to bring the problem inside with any plants brought indoors for the winter.

That is them compared to a 5c coin, which is only 20.5mm in diameter

Thanks. This makes the aphid ID more certain.