$303 Cheap Alaska Airlines flights Washington (IAD) to Sitka (SIT)

Finding cheap one-way Alaska Airlines flights from IAD to SIT from $303 on Expedia is easy — just filter by "Price (lowest to highest)." Alternatively, check out our affordable round-trip fares from $605 for your next break.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

Search for cheap Alaska Airlines flights from Washington Dulles Intl. Airport (IAD) to Sitka Airport (SIT) one to three months ahead of your departure. Travelers who book domestic flights 34 to 86 days in advance can save 25% compared to those who book just 6 to 12 days ahead. Regardless of fare class and itinerary, the best day to book a domestic flight is generally Sunday and the most expensive day tends to be Monday. Passengers who book on a Sunday can save 6% on average compared to those who book on a Monday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.

To find the earliest departures from IAD to SIT with Alaska Airlines, filter your results by "Early Morning" and "Morning." Choosing an early flight usually means you're less likely to experience cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.

Offering top-tier customer service and a rewarding loyalty program, Alaska Airlines is a favorite for many travelers flying from IAD to SIT. Also, if you're a Mileage Plan and One Key™ member booking through Expedia, you could earn OneKeyCash™* on eligible flights on top of your airline miles, which can be spent on future travel.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.