COVID test for flying between Fairbanks and Anchorage?

Hi all, just wondering if a COVID test is needed for residents/non-residents flying from FAI to ANC and back.

For residents getting a free test is easy, but for my SO who is a non resident, the charges seem to be as high as $250.

Looking for advice! I tried navigating the regulations available online but it has been difficult to find answers. Thank you, Fairbanks community.

(Edit: changed FBX to FAI, my mistake)