The great-circle air distance between Atlanta, Georgia (ATL) and Anchorage, Alaska (ANC) is 3,005 statute miles (4,836 km).
Nonstop: ~9 hours (Delta operates seasonal ATL-ANC).
Connecting (typical): 11-14 hours via Seattle (SEA), Minneapolis (MSP), or Salt Lake City (SLC).
Time zones: Anchorage is 4 hours behind Atlanta (AKDT vs EDT summer; AKST vs EST winter = 4 hours year-round).
Flights arc northwest across the continent—Great Plains, Rockies, Canadian Rockies, Yukon, Alaska Range. Great-circle path passes near Edmonton and Whitehorse.
This is one of the longest domestic U.S. routes—only Honolulu/Boston or Miami/Seattle rival it.