US Fatalities from Spanish Flu (1918/19): Approx. 600,000
US Fatalities to Date from Coronavirus (2020): 0
From Wikipedia:
The World Health Organization estimates that 2–3% of those who were infected died (case-fatality ratio). It is estimated that approximately 30 million were killed by the flu, or about 1.7% of the world population died...
This flu killed more people in 24 weeks than HIV/AIDS killed in 24 years...
In the U.S., about 28% of the population of 105 million became infected, and 500,000 to 675,000 died (0.48 to 0.64 percent of the population).
https://en.wikipedia.org/wiki/Spanish_flu