$104 Cheap Flights from Seattle (SEA) to Charleston (CHS)

View $104 flight on Wed, Sep 24, 2025Opens in a new window

Popular airlines from Seattle-Tacoma International Airport (SEA) to Charleston Intl. Airport (CHS)

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Cheap Flights from Seattle to Charleston (SEA-CHS)

Prices were available within the past 7 days and start at $104 for one-way flights and $207 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Wed, Sep 24 - Mon, Sep 29
SEA
Seattle
CHS
Charleston
$207 Roundtrip, just found
$207
Roundtrip
just found
Select American Airlines flight, departing Wed, Sep 24 from Seattle to Charleston, returning Mon, Sep 29, priced at $207 just found
Southwest Airlines
Fri, Sep 19 - Tue, Sep 23
SEA
Seattle
CHS
Charleston
$212 Roundtrip, found 13 hours ago
$212
Roundtrip
found 13 hours ago
Select Southwest Airlines flight, departing Fri, Sep 19 from Seattle to Charleston, returning Tue, Sep 23, priced at $212 found 13 hours ago
Southwest Airlines
Sun, Sep 7 - Sat, Sep 13
SEA
Seattle
CHS
Charleston
$213 Roundtrip, found 9 hours ago
$213
Roundtrip
found 9 hours ago
Select Southwest Airlines flight, departing Sun, Sep 7 from Seattle to Charleston, returning Sat, Sep 13, priced at $213 found 9 hours ago
Southwest Airlines
Sun, Sep 7 - Sat, Sep 13
SEA
Seattle
CHS
Charleston
$219 Roundtrip, found 9 hours ago
$219
Roundtrip
found 9 hours ago
Select Southwest Airlines flight, departing Sun, Sep 7 from Seattle to Charleston, returning Sat, Sep 13, priced at $219 found 9 hours ago
Southwest Airlines
Sun, Sep 7 - Sat, Sep 13
SEA
Seattle
CHS
Charleston
$230 Roundtrip, found 9 hours ago
$230
Roundtrip
found 9 hours ago
Select Southwest Airlines flight, departing Sun, Sep 7 from Seattle to Charleston, returning Sat, Sep 13, priced at $230 found 9 hours ago
Southwest Airlines
Sat, Sep 6 - Sat, Sep 13
SEA
Seattle
CHS
Charleston
$232 Roundtrip, just found
$232
Roundtrip
just found
Select Southwest Airlines flight, departing Sat, Sep 6 from Seattle to Charleston, returning Sat, Sep 13, priced at $232 just found
Southwest Airlines
Sat, Sep 6 - Tue, Sep 9
SEA
Seattle
CHS
Charleston
$233 Roundtrip, found 5 days ago
$233
Roundtrip
found 5 days ago
Select Southwest Airlines flight, departing Sat, Sep 6 from Seattle to Charleston, returning Tue, Sep 9, priced at $233 found 5 days ago
Alaska Airlines
Sat, Sep 6 - Sat, Sep 13
SEA
Seattle
CHS
Charleston
$237 Roundtrip, just found
$237
Roundtrip
just found
Select Alaska Airlines flight, departing Sat, Sep 6 from Seattle to Charleston, returning Sat, Sep 13, priced at $237 just found
United
Sat, Nov 8 - Wed, Nov 12
SEA
Seattle
CHS
Charleston
$244 Roundtrip, found 1 hour ago
$244
Roundtrip
found 1 hour ago
Select United flight, departing Sat, Nov 8 from Seattle to Charleston, returning Wed, Nov 12, priced at $244 found 1 hour ago
Delta
Wed, Sep 24 - Mon, Sep 29
SEA
Seattle
CHS
Charleston
$256 Roundtrip, just found
$256
Roundtrip
just found
Select Delta flight, departing Wed, Sep 24 from Seattle to Charleston, returning Mon, Sep 29, priced at $256 just found

Find the cheapest month to fly from Seattle (SEA) to Charleston (CHS)

September is typically the cheapest month to fly

From $143 - $316 per traveler.

Graph displaying average flight prices per month

Alternative airports near Charleston

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Charleston Intl. CHS. Cheapest and Closest option available. Average driving time to city center is 16 minutes. Flights from $548
CHS
Charleston Intl.
CheapestClosest
Average driving time to city center16 min
Flights from $548
Flights from Seattle (SEA) to Charleston (CHS)
Origin airport
Seattle - Tacoma Intl.
Destination airport
Charleston Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, JetBlue Airways, Southwest Airlines, United
Roundtrip price
$206
Distance
2410 mi
Average flight time
5 hours 13 mins

Seattle to Charleston Flights

The cheapest times to fly from Seattle to Charleston

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Seattle to Charleston are during the month of September. You can find some of the cheapest flights from Seattle to Charleston with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Seattle to Charleston

Sunday is one of the best days to book for cheap flights from Seattle to Charleston: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Seattle to Charleston

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Seattle to Charleston in 2025. You can also book with separate airlines for your outbound and return journeys, from $104 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Seattle to Charleston flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Seattle to Charleston airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Seattle - Tacoma Intl. Airport (SEA) to Charleston Intl. Airport (CHS) cost?
Grab cheap return fares starting from $234 from Seattle - Tacoma Intl. Airport (SEA) to Charleston Intl. Airport (CHS). This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a Alaska Airlines flight leaving SEA on August 19 2025 and touching down at CHS. The price was last updated on July 23 2025 and has not changed since.
What is the cheapest month to fly from SEA to CHS?
The cheapest flights from SEA to CHS are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from Seattle - Tacoma Intl. Airport (SEA) to Charleston Intl. Airport (CHS)?
Hop on a nonstop flight with Alaska Airlines and head straight from Seattle - Tacoma Intl. Airport (SEA) to Charleston Intl. Airport (CHS).
What is the cheapest airline that flies from SEA to CHS?
Currently, the cheapest airline offering one-way flights from SEA to CHS is Alaska Airlines. You can jet off on this route from $129. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from SEA on September 24 2025. Prices were last updated on July 23 2025 and have not changed since.
How many flights per day from Seattle - Tacoma Intl. Airport (SEA) to Charleston Intl. Airport (CHS)?
On average, you can choose from 5 direct flights per week from Seattle - Tacoma Intl. Airport (SEA) to Charleston Intl. Airport (CHS). For more options, consider flights with layovers. Enter your dates on Expedia and then filter your search to show one stop or more.
What are the most popular departure times for flights from Seattle - Tacoma Intl. Airport (SEA) to Charleston Intl. Airport (CHS)?
The 9 AM departures from SEA to CHS see the highest demand. Greater demand means you'll likely pay more for these departures. If you want to save money, choose a less crowded time to fly.
What day of the week has the most flights from SEA to CHS?
Friday offers the most flights from Seattle - Tacoma Intl. Airport (SEA) to Charleston Intl. Airport (CHS). Consider taking off on this day and you'll have the best chance of finding a departure that fits your plans.
What is the earliest flight from Seattle - Tacoma Intl. Airport (SEA) to Charleston Intl. Airport (CHS)?
Seattle - Tacoma Intl. Airport (SEA)'s first flight to Charleston Intl. Airport (CHS) is at approximately 9:15AM UTC-8. With a total flight time of 5h 17m, you'll land at around 5:32PM UTC-5.
How long does it take to fly from Seattle - Tacoma Intl. Airport (SEA) to Charleston Intl. Airport (CHS)?
Flights from SEA to CHS have an average travel time of 5 hours and 17 minutes. The distance between the two is 2,400 mi.
What airline has the least delays from SEA to CHS?
Alaska Airlines has the strongest track record for on-time direct flights from Seattle - Tacoma Intl. Airport (SEA) to Charleston Intl. Airport (CHS), with an on-time score of 81%. Use the Expedia App to see your flight schedule before you go and get notified of any trip changes.
What is the best time to fly from Seattle - Tacoma Intl. Airport (SEA) to Charleston Intl. Airport (CHS)?
To land at Charleston Intl. Airport (CHS) without delays, choose a flight that leaves from Seattle - Tacoma Intl. Airport (SEA) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this hour.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for Charleston from Seattle - Tacoma Intl. Airport (SEA)?
Charleston Intl. Airport (CHS) is the only airport in Charleston with direct flights from Seattle - Tacoma Intl. Airport (SEA). Browse the available options and discover affordable fares on Expedia.
Is it cheaper to buy a plane ticket from Seattle - Tacoma Intl. Airport (SEA) to Charleston Intl. Airport (CHS) last-minute?
Last-minute fares from SEA to CHS are usually more expensive. To lock in the best rates, start looking for flights as soon as possible. That said, if you can play around with your travel dates, it's possible to find a cheap ticket right before your trip.
Is it cheaper to book a SEA to CHS flight and hotel package?
You can save money by securing a SEA to CHS flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's easy to manage it all in one convenient place. Once you've chosen your preferred flights and accommodations, consider adding extras such as tours, activities and car rentals.
Can I cancel or change the date of my flight from Seattle - Tacoma Intl. Airport (SEA) to Charleston Intl. Airport (CHS)?
In most cases, you can cancel or reschedule your SEA to CHS flight. However, additional fees may apply, especially if your booking was made over 24 hours ago. Double-check your itinerary for the airline's policies and fees on flight changes, or if you'd like further details, go to our Customer Service portal.

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Seattle nearby Airports

Seattle Paine Field Intl. Airport

Seattle Paine Field Intl. Airport to Charleston
$952.58
*Available to One Key members.