$149 Cheap Alaska Airlines flights Seattle (SEA) to Charleston (CHS)

Finding cheap one-way Alaska Airlines flights from SEA to CHS from $149 on Expedia couldn't be simpler — just filter by "Price (lowest to highest)." Or check out our budget-friendly round-trip fares from $231 for your next adventure.**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.

To find cheap Alaska Airlines fares from Seattle - Tacoma Intl. Airport (SEA) to Charleston Intl. Airport (CHS), start searching one to three months before your planned departure. Securing domestic flights 34 to 86 days in advance could save you 25% compared to booking just 6 to 12 days ahead. The day you book can also impact the cost. Sunday is generally the most affordable, while Monday is often the most expensive for domestic flights. You can save 6% on average by booking your journey on a Sunday.**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.

The earliest flight from SEA to CHS with Alaska Airlines departs at 9:15AM UTC-8. You'll touch down at 5:32PM UTC-5. The last Alaska Airlines flight of the day leaves at 9:15AM UTC-8 and arrives at 5:32PM UTC-5. With 20% fewer cancellations for early and mid-morning flights, jetting out early is generally the best choice.**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.

Alaska Airlines makes flying from SEA to CHS more comfortable with an excellent in-flight experience and a rewarding loyalty program. You even have the chance to collect points with Mileage Plan. Be sure to sign up to Expedia's free One Key™ rewards program to earn OneKeyCash™*, which can be redeemed on future travel.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.