SEA, PDX, LAX, HNL and PHX are your safest bets for year round service on AS to ANC (although HNL-ANC was suspended this summer/fall due to the pilot shortage, it comes back in November or December). ORD usually goes away between January and March. MSP, DEN, LAS, SFO, SLC are all seasonal.

AA doesn’t fly LAX-ANC or PHX-ANC anymore.