$90 Cheap Flights from Charleston (CHS) to Seattle (SEA)

View $90 flight on Wed, Nov 19, 2025Opens in a new window

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

Cheap Flights from Charleston to Seattle (CHS-SEA)

Prices were available within the past 7 days and start at $90 for one-way flights and $173 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Tue, Jan 13 - Tue, Jan 20
CHS
Charleston
SEA
Seattle
$173 Roundtrip, found 6 days ago
$173
Roundtrip
found 6 days ago
Select American Airlines flight, departing Tue, Jan 13 from Charleston to Seattle, returning Tue, Jan 20, priced at $173 found 6 days ago
American Airlines
Tue, Jan 13 - Tue, Jan 20
CHS
Charleston
SEA
Seattle
$174 Roundtrip, found 6 days ago
$174
Roundtrip
found 6 days ago
Select American Airlines flight, departing Tue, Jan 13 from Charleston to Seattle, returning Tue, Jan 20, priced at $174 found 6 days ago
American Airlines
Fri, Dec 5 - Mon, Dec 8
CHS
Charleston
SEA
Seattle
$179 Roundtrip, found 1 hour ago
$179
Roundtrip
found 1 hour ago
Select American Airlines flight, departing Fri, Dec 5 from Charleston to Seattle, returning Mon, Dec 8, priced at $179 found 1 hour ago
Southwest Airlines
Mon, Feb 2 - Sun, Feb 8
CHS
Charleston
SEA
Seattle
$179 Roundtrip, found 6 days ago
$179
Roundtrip
found 6 days ago
Select Southwest Airlines flight, departing Mon, Feb 2 from Charleston to Seattle, returning Sun, Feb 8, priced at $179 found 6 days ago
Southwest Airlines
Wed, Jan 28 - Mon, Feb 2
CHS
Charleston
SEA
Seattle
$184 Roundtrip, found 4 days ago
$184
Roundtrip
found 4 days ago
Select Southwest Airlines flight, departing Wed, Jan 28 from Charleston to Seattle, returning Mon, Feb 2, priced at $184 found 4 days ago
American Airlines
Tue, Dec 9 - Fri, Dec 12
CHS
Charleston
SEA
Seattle
$194 Roundtrip, found 14 hours ago
$194
Roundtrip
found 14 hours ago
Select American Airlines flight, departing Tue, Dec 9 from Charleston to Seattle, returning Fri, Dec 12, priced at $194 found 14 hours ago
Southwest Airlines
Tue, Jan 13 - Tue, Jan 20
CHS
Charleston
SEA
Seattle
$194 Roundtrip, found 6 days ago
$194
Roundtrip
found 6 days ago
Select Southwest Airlines flight, departing Tue, Jan 13 from Charleston to Seattle, returning Tue, Jan 20, priced at $194 found 6 days ago
United
Tue, Mar 31 - Tue, Apr 7
CHS
Charleston
SEA
Seattle
$204 Roundtrip, found 5 days ago
$204
Roundtrip
found 5 days ago
Select United flight, departing Tue, Mar 31 from Charleston to Seattle, returning Tue, Apr 7, priced at $204 found 5 days ago
Alaska Airlines
Wed, Feb 11 - Wed, Feb 25
CHS
Charleston
SEA
Seattle
$217 Roundtrip, found 1 hour ago
$217
Roundtrip
found 1 hour ago
Select Alaska Airlines flight, departing Wed, Feb 11 from Charleston to Seattle, returning Wed, Feb 25, priced at $217 found 1 hour ago
Delta
Sat, Jan 17 - Wed, Jan 21
CHS
Charleston
SEA
Seattle
$227 Roundtrip, found 4 hours ago
$227
Roundtrip
found 4 hours ago
Select Delta flight, departing Sat, Jan 17 from Charleston to Seattle, returning Wed, Jan 21, priced at $227 found 4 hours ago

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

September is typically the cheapest month to fly

From $158 - $301 per traveler.

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 $231
SEA
Seattle - Tacoma Intl.
Cheapest
Average driving time to city center20 min
Flights from $231
0
Flights from Charleston (CHS) to Seattle (SEA)
Origin airport
Charleston Intl.
Destination airport
Seattle - Tacoma Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Hawaiian Airlines, JetBlue Airways, Southwest Airlines, Sun Country Airlines, United
Roundtrip price
$172
Distance
2410 mi

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 January. 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 $90 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?
Grab a cheap one-way flight from $90 or cheap return flight from $173 from Charleston Intl. Airport (CHS) to Seattle - Tacoma Intl. Airport (SEA) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Charleston Intl. Airport (CHS) to Seattle - Tacoma Intl. Airport (SEA)?
Traveling in January is a great way to save, as it's the cheapest month for flights between CHS and SEA. You'll usually find the lowest prices during the off-season.
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 Charleston Intl. Airport (CHS) to Seattle - Tacoma Intl. Airport (SEA)?
Use the filter tool on Expedia to compare airlines and find the most affordable carrier that'll fly you from CHS to SEA. Then, sort your results by "Price (lowest to highest)" to snap up a great deal.
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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*Available to One Key members.