Record-setting flooding in western Alaska from the remnants of Typhoon Halong has left at least one person dead after the storm slammed villages and damaged key roads and regional airports along the Yukon-Kuskokwim Delta region over the weekend.

Damage to remote Alaska villages hammered by flooding last weekend is so extreme that many of the more than 2,000 people displaced won’t be able to return to their homes for at least 18 months, Gov. M...