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

View $104 flight on Wed, Sep 10, 2025Opens in a new window

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

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Cheap Flights from Charleston to Seattle (CHS-SEA)

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 17 - Wed, Oct 1
CHS
Charleston
SEA
Seattle
$207 Roundtrip, just found
$207
Roundtrip
just found
Select American Airlines flight, departing Wed, Sep 17 from Charleston to Seattle, returning Wed, Oct 1, priced at $207 just found
American Airlines
Wed, Sep 24 - Sun, Sep 28
CHS
Charleston
SEA
Seattle
$212 Roundtrip, found 3 days ago
$212
Roundtrip
found 3 days ago
Select American Airlines flight, departing Wed, Sep 24 from Charleston to Seattle, returning Sun, Sep 28, priced at $212 found 3 days ago
American Airlines
Wed, Sep 3 - Tue, Sep 9
CHS
Charleston
SEA
Seattle
$224 Roundtrip, found 3 days ago
$224
Roundtrip
found 3 days ago
Select American Airlines flight, departing Wed, Sep 3 from Charleston to Seattle, returning Tue, Sep 9, priced at $224 found 3 days ago
Southwest Airlines
Tue, Aug 26 - Wed, Sep 24
CHS
Charleston
SEA
Seattle
$232 Roundtrip, found 16 hours ago
$232
Roundtrip
found 16 hours ago
Select Southwest Airlines flight, departing Tue, Aug 26 from Charleston to Seattle, returning Wed, Sep 24, priced at $232 found 16 hours ago
Bargain Flight
Tue, Nov 25 - Wed, Dec 3
CHS
Charleston
SEA
Seattle
$235 Roundtrip, found 21 hours ago
$235
Roundtrip
found 21 hours ago
Select Bargain Flight flight, departing Tue, Nov 25 from Charleston to Seattle, returning Wed, Dec 3, priced at $235 found 21 hours ago
Alaska Airlines
Sat, Aug 23 - Tue, Aug 26
CHS
Charleston
SEA
Seattle
$237 Roundtrip, found 9 hours ago
$237
Roundtrip
found 9 hours ago
Select Alaska Airlines flight, departing Sat, Aug 23 from Charleston to Seattle, returning Tue, Aug 26, priced at $237 found 9 hours ago
American Airlines
Mon, Nov 24 - Tue, Dec 2
CHS
Charleston
SEA
Seattle
$239 Roundtrip, found 21 hours ago
$239
Roundtrip
found 21 hours ago
Select American Airlines flight, departing Mon, Nov 24 from Charleston to Seattle, returning Tue, Dec 2, priced at $239 found 21 hours ago
United
Tue, Aug 26 - Mon, Sep 8
CHS
Charleston
SEA
Seattle
$240 Roundtrip, found 1 day ago
$240
Roundtrip
found 1 day ago
Select United flight, departing Tue, Aug 26 from Charleston to Seattle, returning Mon, Sep 8, priced at $240 found 1 day ago
Southwest Airlines
Wed, Aug 27 - Sat, Aug 30
CHS
Charleston
SEA
Seattle
$242 Roundtrip, just found
$242
Roundtrip
just found
Select Southwest Airlines flight, departing Wed, Aug 27 from Charleston to Seattle, returning Sat, Aug 30, priced at $242 just found
Southwest Airlines
Tue, Dec 16 - Thu, Dec 25
CHS
Charleston
SEA
Seattle
$242 Roundtrip, found 2 days ago
$242
Roundtrip
found 2 days ago
Select Southwest Airlines flight, departing Tue, Dec 16 from Charleston to Seattle, returning Thu, Dec 25, priced at $242 found 2 days ago

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

September is typically the cheapest month to fly

From $142 - $315 per traveler.

Graph displaying average flight prices per month

Alternative airports near Seattle

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

Select flight to Seattle - Tacoma Intl. SEA. Cheapest option available. Average driving time to city center is 20 minutes. Flights from $378
SEA
Seattle - Tacoma Intl.
Cheapest
Average driving time to city center20 min
Flights from $378
Flights from Charleston (CHS) to Seattle (SEA)
Origin airport
Charleston Intl.
Destination airport
Seattle - Tacoma Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, JetBlue Airways, Southwest Airlines, United
Roundtrip price
$206
Distance
2410 mi
Average flight time
5 hours 57 mins

Charleston to Seattle Flights

The cheapest times to fly from Charleston to Seattle

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 Charleston to Seattle are during the month of September. You can find some of the cheapest flights from Charleston to Seattle with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Charleston to Seattle

Sunday is one of the best days to book for cheap flights from Charleston to Seattle: 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 Charleston to Seattle

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 Charleston to Seattle 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 Charleston to Seattle 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 Charleston to Seattle 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 Charleston Intl. Airport (CHS) to Seattle - Tacoma Intl. Airport (SEA) cost?
Pick up cheap return tickets starting from $238 from Charleston Intl. Airport (CHS) to Seattle - Tacoma Intl. Airport (SEA). 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 CHS on August 19 2025 and touching down at SEA. The price was last updated on July 23 2025 and has not changed since.
What is the cheapest month to fly from CHS to SEA?
The cheapest flights from CHS to SEA 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 Charleston Intl. Airport (CHS) to Seattle - Tacoma Intl. Airport (SEA)?
Board a nonstop flight with Alaska Airlines and journey straight from Charleston Intl. Airport (CHS) to Seattle - Tacoma Intl. Airport (SEA).
What is the cheapest airline that flies from CHS to SEA?
With prices starting from $129 for a one-way flight from CHS to SEA, Alaska Airlines is currently the cheapest airline flying this route. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from CHS on October 18 2025. Prices were last updated on July 23 2025 and have not changed since.
How many flights per day from Charleston Intl. Airport (CHS) to Seattle - Tacoma Intl. Airport (SEA)?
On average, there are 5 nonstop flights departing from Charleston Intl. Airport (CHS) to Seattle - Tacoma Intl. Airport (SEA) weekly. If you don't find one that suits your schedule, think about a flight with a layover. Filter your search results on Expedia to include one or two stops and opt for the next best option.
What are the most popular departure times for flights from Charleston Intl. Airport (CHS) to Seattle - Tacoma Intl. Airport (SEA)?
The 6 PM departures from CHS to SEA are the busiest. Prices can be higher for these popular slots. If you're looking to save, choose a less crowded time to fly.
What day of the week has the most flights from CHS to SEA?
Jet off on a Friday if you're after the best selection of flights from Charleston Intl. Airport (CHS) to Seattle - Tacoma Intl. Airport (SEA).
What is the earliest flight from Charleston Intl. Airport (CHS) to Seattle - Tacoma Intl. Airport (SEA)?
Catch the earliest flight at around 6:32PM UTC-5, departing from Charleston Intl. Airport (CHS). You'll be in the air for approximately 6h 12m, coming in to land at Seattle - Tacoma Intl. Airport (SEA) at approximately 9:44PM UTC-8.
How long does it take to fly from Charleston Intl. Airport (CHS) to Seattle - Tacoma Intl. Airport (SEA)?
Flights from CHS to SEA have an average travel time of 6 hours and 12 minutes. The total distance between these two airports is 2,400 mi.
What is the best time to fly from Charleston Intl. Airport (CHS) to Seattle - Tacoma Intl. Airport (SEA)?
Select a flight from Charleston Intl. Airport (CHS) to Seattle - Tacoma Intl. Airport (SEA) that leaves before 3 PM to reduce the risk of delays and cancellations. Later departures have a 22% higher chance of being canceled, on average.**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 Seattle from Charleston Intl. Airport (CHS)?
Seattle - Tacoma Intl. Airport (SEA) is the only airport in Seattle with direct flights from Charleston Intl. Airport (CHS). Check out your options and find affordable fares on Expedia.
Is it cheaper to buy a plane ticket from Charleston Intl. Airport (CHS) to Seattle - Tacoma Intl. Airport (SEA) last-minute?
Last-minute bookings from CHS to SEA are usually more expensive. To lock in the lowest prices, start looking for flights ahead of time. That being said, if you're flexible with your travel dates, you may land a cheap fare right before you leave.
Is it cheaper to book a CHS to SEA flight and hotel package?
Opting for a CHS to SEA flight and hotel package is typically cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your trip in one place. Pick from our wide range of accommodations and then add activities, flights and car rentals to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Charleston Intl. Airport (CHS) to Seattle - Tacoma Intl. Airport (SEA)?
If you booked your CHS to SEA flight in the last 24 hours, you may be able to cancel or modify it without fees. Depending on the airline and the ticket type you purchased, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal for more details.

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