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£92 Cheap Flights from Charleston (CHS) to Seattle (SEA)

View £92 flight on Tue, 25 Aug 2026Opens 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 (CHS) to Seattle (SEA)

Prices were available within the past 7 days and start at £92 for one-way flights and £200 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Mon, 24 Aug - Tue, 25 Aug
CHS
Charleston
SEA
Seattle
£200 Return, found 3 days ago
£200
Return
found 3 days ago
Select Delta flight, departing Mon, 24 Aug from Charleston to Seattle, returning Tue, 25 Aug, priced at £200 found 3 days ago
Delta
Sun, 23 Aug - Mon, 31 Aug
CHS
Charleston
SEA
Seattle
£201 Return, found 6 days ago
£201
Return
found 6 days ago
Select Delta flight, departing Sun, 23 Aug from Charleston to Seattle, returning Mon, 31 Aug, priced at £201 found 6 days ago
Delta
Sun, 23 Aug - Wed, 2 Sept
CHS
Charleston
SEA
Seattle
£215 Return, found 6 days ago
£215
Return
found 6 days ago
Select Delta flight, departing Sun, 23 Aug from Charleston to Seattle, returning Wed, 2 Sept, priced at £215 found 6 days ago
Delta
Mon, 24 Aug - Tue, 25 Aug
CHS
Charleston
SEA
Seattle
£227 Return, found 3 days ago
£227
Return
found 3 days ago
Select Delta flight, departing Mon, 24 Aug from Charleston to Seattle, returning Tue, 25 Aug, priced at £227 found 3 days ago
Delta
Mon, 24 Aug - Tue, 25 Aug
CHS
Charleston
SEA
Seattle
£241 Return, found 3 days ago
£241
Return
found 3 days ago
Select Delta flight, departing Mon, 24 Aug from Charleston to Seattle, returning Tue, 25 Aug, priced at £241 found 3 days ago
Delta
Wed, 26 Aug - Mon, 31 Aug
CHS
Charleston
SEA
Seattle
£250 Return, found 6 days ago
£250
Return
found 6 days ago
Select Delta flight, departing Wed, 26 Aug from Charleston to Seattle, returning Mon, 31 Aug, priced at £250 found 6 days ago
American Airlines
Mon, 24 Aug - Tue, 25 Aug
CHS
Charleston
SEA
Seattle
£257 Return, found 3 days ago
£257
Return
found 3 days ago
Select American Airlines flight, departing Mon, 24 Aug from Charleston to Seattle, returning Tue, 25 Aug, priced at £257 found 3 days ago
United
Mon, 24 Aug - Tue, 25 Aug
CHS
Charleston
SEA
Seattle
£263 Return, found 3 days ago
£263
Return
found 3 days ago
Select United flight, departing Mon, 24 Aug from Charleston to Seattle, returning Tue, 25 Aug, priced at £263 found 3 days ago
Alaska Airlines
Sat, 12 Sept - Wed, 23 Sept
CHS
Charleston
SEA
Seattle
£301 Return, found 3 days ago
£301
Return
found 3 days ago
Select Alaska Airlines flight, departing Sat, 12 Sept from Charleston to Seattle, returning Wed, 23 Sept, priced at £301 found 3 days ago
JetBlue Airways
Fri, 11 Sept - Fri, 18 Sept
CHS
Charleston
SEA
Seattle
£329 Return, found 5 days ago
£329
Return
found 5 days ago
Select JetBlue Airways flight, departing Fri, 11 Sept from Charleston to Seattle, returning Fri, 18 Sept, priced at £329 found 5 days ago

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

September is typically the cheapest month to fly

From £146 - £302 per traveller.

Frequently asked questions

How much does a flight from Charleston, SC (CHS-Charleston Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) cost?
You can find one-way and return flights from CHS to SEA with Expedia. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see our cheapest fares first, and use the Price Tracking tool to receive alerts when CHS to SEA ticket fares go up or down.
What is the cheapest month to fly from Charleston, SC (CHS-Charleston Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The cheapest months to fly from CHS to SEA are typically during off-peak season when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you are able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Charleston, SC (CHS) to Seattle, WA (SEA)?
Enter CHS to SEA and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Charleston, SC (CHS-Charleston Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
Alaska Airlines is one of the cheapest airlines offering nonstop return flights from Charleston, SC (CHS-Charleston Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.), with tickets starting from around £146 for flights that can be booked for departure within the next year. For connecting flights, Sun Country Airlines is one of the cheapest, with return tickets starting from around £174. These prices are per adult, for economy/coach class. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.
How do I find cheap flights from Charleston, SC (CHS-Charleston Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
To find a cheap flight from Charleston, SC (CHS-Charleston Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best airline to fly with from Charleston, SC (CHS-Charleston Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The best airline to fly with from Charleston, SC (CHS-Charleston Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) will differ from traveler to traveler. If you like to fly early, Alaska Airlines offers early morning flights. If price is the most important factor, Alaska Airlines typically offers the lowest fares. Southwest Airlines offers the most daily flights from Charleston, SC (CHS-Charleston Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.), which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.
What is the best time to fly from Charleston, SC (CHS-Charleston Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
How many flights per day from Charleston, SC (CHS-Charleston Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
There are approximately 65 connecting flights per day from Charleston, SC (CHS-Charleston Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.). Some common connection points include Hartsfield-Jackson Atlanta Intl. (ATL), Baltimore Washington Intl. Thurgood Marshall (BWI), and Charlotte-Douglas Intl. (CLT).
What is the earliest flight from Charleston, SC (CHS) to Seattle, WA (SEA)?
Sort flights by "Departure (earliest)" on Expedia to find the earliest flight from Charleston, SC (CHS) to Seattle, WA (SEA). To compare more early flights, use the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Charleston, SC (CHS-Charleston Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
You'll find the most flights from Charleston, SC (CHS-Charleston Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) on a Thursday, with around 50 flights available. This gives you a good selection of options for your travel plans. Major airlines on this route include American Airlines, United, and Delta. Thursday offers notably more flight options compared to other days of the week, making it a great day to consider for your journey.
What are the most popular departure times for flights from Charleston, SC (CHS-Charleston Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The most popular departure times for flights from Charleston, SC (CHS-Charleston Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) are in the early morning, from 6am to 9am. Many major carriers, including American Airlines, United and Delta, offer flights during this window. Many travellers prefer this because it allows for an early start to your journey, getting you to your destination with plenty of time left in the day.
How long does it take to fly from Charleston, SC (CHS-Charleston Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
Direct flights from CHS to SEA usually take about 6 hours, traveling roughly 3,880 kilometers. If you opt for a connecting flight, expect to add around 3 hours to your journey. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Charleston, SC (CHS-Charleston Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
Yes, you can fly business class or first class between CHS and SEA. You can fly business class with Delta.First class cabins are available on Alaska Airlines, Delta, United, and American Airlines.
How do I earn miles on a Charleston, SC (CHS) to Seattle, WA (SEA) flight with Expedia?
It's easy to earn miles on a Charleston, SC (CHS) to Seattle, WA (SEA) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
Is it cheaper to buy a plane ticket from Charleston, SC (CHS) to Seattle, WA (SEA) at the last minute?
Typically, booking a last minute flight from Charleston, SC (CHS) to Seattle, WA (SEA) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Charleston, SC (CHS) to Seattle, WA (SEA) flight and hotel package?
Securing a Charleston, SC (CHS) to Seattle, WA (SEA) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Charleston, SC (CHS-Charleston Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
If you booked your Charleston, SC (CHS-Charleston Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Charleston Intl.
Destination airport
Seattle - Tacoma Intl.
Return price
£199
Distance
3856 km
Average flight time
5 hours 21 mins

Book with confidence

Compare flights from Charleston to Seattle easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from Charleston to Seattle. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Seattle - Tacoma Intl. in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Charleston Intl. to Seattle - Tacoma Intl..  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Charleston Intl. (CHS) to Seattle - Tacoma Intl. (SEA)

The easiest way to view the best deals on flights from Charleston to Seattle today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Charleston Intl. to Seattle - Tacoma Intl. start at just £200 and range up to £329.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near Charleston and Seattle
  • booking your flight during August, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your Charleston to Seattle flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Charleston Intl. to Seattle - Tacoma Intl. for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Compare flights from Charleston to Seattle easily and book with confidence

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*Available to Expedia members.