For some reason CVS refuses to take my UnitedHealth insurance for flu (but will no problem for covid). They said it would have been 200 bucks and I laughed at them and went to Costco.

I'm an EMT w/ a fire dept, we run a local flu shot drive for our community for free. Check for other resources like this for example in your community, or perhaps at the county level.

If that doesn’t work, a lot of county health departments have free clinics for people without insurance.

Would be hard to get in Canada without provincial health cards, if I had to guess.

turns out you were right!