Cheap flights from Charleston to Seattle from $127

In general, February is the cheapest month to fly from Charleston to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $257. If you don’t want to visit Seattle in February, then you should wait until January to fly from Charleston, when ticket prices are also cheap, with an average price of $257.

On average, the least expensive day to fly to Seattle from Charleston is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $467. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Monday is the most expensive day to depart from Charleston because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $727.

Flying to Seattle from Charleston in the evening is the least expensive time of day to depart. momondo users have found prices as low as $430 when looking at flights departing in the evening. Flights to Seattle are more costly in the morning, with an average ticket price of $1,594. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

Fly from Charleston to Seattle/Tacoma Intl for the best Charleston - Seattle/Tacoma Intl flight prices

You are more likely to see cheaper flights to Seattle from Charleston when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $371 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Charleston for as low as $340 on momondo.

There are 4 cabin classes available to choose from on Charleston to Seattle flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

No. A direct flight is the cheapest option for a flight between Charleston to Seattle.

As of September 2026, prices for Charleston to Seattle flights are approximately 23% cheaper when compared to flights at the same time last year.

United Airlines, Delta, and Southwest are the most popular carriers operating from Charleston to Seattle/Tacoma Intl

American Airlines, Alaska Airlines and Delta are the top three most popular airlines that fly to Seattle from Charleston according to our data. American Airlines is the first choice among our users, with 36% of people opting to fly with this airline when traveling to Seattle. Keep in mind that there are 5 different airlines that fly to Seattle on a routine basis, so you have a few additional options to choose from.

Charlotte (CLT) was the most common stop: 50% of momondo users choosing 1-stop flights on this route connected there.

Flights via Dallas (DFW) offer the lowest average round-trip price of $238.

Flights connecting via Atlanta (ATL) have the shortest average one-way travel time: 8h 23m.

Chicago (ORD) has the shortest average layover time for this route: 1h 06m.