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

Set the “Price (lowest to highest)” filter on Expedia to look for cheap Alaska Airlines round-trip flights from CHS to SEA. Affordable one-way fares are available too.**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.

January is one of the most affordable months to get away to Seattle with Alaska Airlines. You could also find great prices on one-way and round-trip fares in February.

Begin your search one to three months ahead of your departure date to find cheap fares on Alaska Airlines flights from Charleston Intl. Airport (CHS) to Seattle - Tacoma Intl. Airport (SEA). You can save 25% by booking your domestic flight 34 to 86 days in advance compared to last-minute reservations made 6 to 12 days out. You could also cut costs by buying your fare on a Sunday, as it’s 6% cheaper on average than a Monday, the most expensive day to book.* Get the timing right, and you can enjoy significant savings on domestic flights.*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.

Alaska Airlines has direct flights from Charleston Intl. Airport (CHS) to Seattle - Tacoma Intl. Airport (SEA), with 5 departures each week. Simply choose the “Nonstop” and “Airline” filters while searching on Expedia to show all direct Alaska Airlines flights to SEA.

On average, it takes 6h 12m to fly nonstop from Charleston Intl. Airport (CHS) to Seattle - Tacoma Intl. Airport (SEA) with Alaska Airlines.

Jetting off from CHS at 6:32PM UTC-5, the first Alaska Airlines flight to SEA lands at 9:44PM UTC-8. Flying early means you’re less likely to experience cancellations.* Prefer to travel later? The last Alaska Airlines flight from CHS to SEA departs at 6:32PM UTC-5 and touches down at 9:44PM UTC-8.*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 flights from Charleston Intl. Airport (CHS) to Seattle land at Seattle - Tacoma Intl. Airport (SEA). This is the main entry point here.

Alaska Airlines makes flying from CHS to SEA more comfortable with top-tier customer service and a rewarding loyalty program. You may even earn points with Mileage Plan. Be sure to sign up to our free One Key™ rewards program to earn OneKeyCash™*, which can be redeemed on future bookings.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

You’ll likely be on a Boeing 737 MAX 9 or a Boeing 737-900 when flying Alaska Airlines from Charleston Intl. Airport (CHS) to Seattle - Tacoma Intl. Airport (SEA). However, keep in mind that a different aircraft may be assigned depending on operational demands.

Depending on the type of fare you purchased, a fee is typically charged if you cancel or reschedule your flight more than 24 hours after confirmation. To secure tickets with more flexibility, select our “Changes included” and “No cancel fee” boxes when looking for flights. To learn more about canceling or modifying your reservation, head to “Trips,” select your flight and click on “Manage Booking.”