This is also a somewhat unfair comparison. Covid was a disease no one was immune to, which caused it to spread far more rapidly. The Spanish flu is a good comparison for covid, but we have to account for population difference.
So covid has killed something like 623,000 people in the US with a population of +330,000,000.
The 1918 flu killed 675,000 people with a US population of 103,000,000.
So if we scaled up the Spanish flu to current population levels, you’re looking at something like 2,000,000 dead. Now we would also have to take into considering how medical advances today would keep more people from dying. But I’d say covid and the Spanish flu are very comparable in terms of their impacts.