Cheap flights from Charleston to Seattle from $115

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 October to fly from Charleston, when ticket prices are also cheap, with an average price of $296.

On average, the least expensive day to fly to Seattle from Charleston is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $396. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Saturday 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 $638.

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 $408 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 $366 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 $284 on momondo.

There are 4 cabin classes available to choose from on Charleston to Seattle/Tacoma Intl 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 March 2026, prices for Charleston to Seattle flights are approximately 9% cheaper when compared to flights at the same time last year.

United Airlines, Southwest, and American Airlines 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 40% of people opting to fly with this airline when traveling to Seattle. Keep in mind that there are 6 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: 75% of momondo users choosing 1-stop flights on this route connected there.

Flights via Chicago (ORD) offer the lowest average round-trip price of $317.

Flights connecting via Charlotte (CLT) have the shortest average one-way travel time: 8h 22m.

Charlotte (CLT) has the shortest average layover time for this route: 1h 21m.

As of March 2026, there are 1 flights per day flying from Charleston to Seattle. The most common time of day flights depart is 6:00PM, with 100% of flights taking off in the evening.

As of March 2026, 9 flights take off from Charleston and land in Seattle each week. The most common flight departure day for this route is Fri, with 22% of weekly flights taking off on this day.