Seattle to Anchorage: 1,440 Miles by Air

The great-circle distance from Seattle–Tacoma (SEA) to Anchorage (ANC) is 1,440 miles (2,315 km). Nonstop flights—Alaska, Delta, United—run 3 hr 30 min to 4 hr, tracing the Inside Passage north over Vancouver Island, the Coast Mountains, and the Gulf of Alaska.

Weather, wind, and routing can add 50–100 miles. Winter storms sometimes push flights farther offshore; summer great-circles cut closer to the coast. Either way, it's a short hop for a state-change that feels like a continent.