Some destinations may be in a state, country, province, etc. that requires a test. The airport itself does not require this of all passengers.
My friend flew to Alaska and had to have a COVID test to fly there. Check with your destination to see if there are restrictions. COVID testing is cheaper or free through your insurance. Otherwise it can cost you $250 or more and insurance probably won't cover one from an airport.
There is but you dont need it
I did see an area for covid testing. But I don't know what all is needed for it. This was day after Christmas.
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