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$75+ Cheap flights from Charleston to Seattle (CHS - SEA)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/4. Fares are subject to change and may not be available on all flights or dates of travel.
CHS — SEA
Jan 3 — Jan 101
Sat 1/3
Sat 1/10
1 adult, Economy
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Find cheap flights from Charleston to Seattle with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

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Cheapflights Tip: The best prices from Charleston to Seattle/Tacoma Intl are usually found in January or October, booked 12 days in advance, depart on a Tuesday or Wednesday and return on a Tuesday

Cheap flight deals from Charleston to Seattle

Cheapest flights from Charleston to Seattle
Explore the most affordable flight options available from Charleston to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 4, 2025.

This American Airlines deal was found by Cheapflights users on 12/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/113:07 pmCHS - SEA
1 stop10h 54mAmerican Airlines
Sun 12/1410:07 pmSEA - CHS
1 stop8h 43mAmerican Airlines
Deal found 12/3$297
This United Airlines deal was found by Cheapflights users on 12/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/1011:33 amCHS - SEA
2 stops12h 27mUnited Airlines
Sun 12/145:00 amSEA - CHS
1 stop7h 09mUnited Airlines
Deal found 12/3$302
This United Airlines deal was found by Cheapflights users on 12/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/234:05 pmCHS - SEA
1 stop10h 07mUnited Airlines
Mon 1/511:59 pmSEA - CHS
1 stop9h 33mUnited Airlines
Deal found 12/3$310
This United Airlines deal was found by Cheapflights users on 12/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/215:00 pmCHS - SEA
1 stop10h 34mUnited Airlines
Thu 12/255:02 amSEA - CHS
1 stop7h 07mUnited Airlines
Deal found 12/2$314
This Expedia deal was found by Cheapflights users on 12/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/256:57 pmCHS - SEA
Nonstop6h 03mAlaska Airlines
Thu 1/19:45 amSEA - CHS
Nonstop5h 12mAlaska Airlines
Deal found 12/3$338
This United Airlines deal was found by Cheapflights users on 12/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/254:05 pmCHS - SEA
2 stops11h 54mUnited Airlines
Thu 1/17:00 amSEA - CHS
1 stop9h 18mUnited Airlines
Deal found 12/3$388
This United Airlines deal was found by Cheapflights users on 12/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/34:11 pmCHS - SEA
2 stops11h 39mUnited Airlines
Sat 1/105:00 amSEA - CHS
1 stop7h 05mUnited Airlines
Deal found 12/3$392
This United Airlines deal was found by Cheapflights users on 12/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1111:00 amCHS - SEA
2 stops14h 28mUnited Airlines
Sun 12/147:00 amSEA - CHS
1 stop9h 30mUnited Airlines
Deal found 12/4$402

Find flight deals from Charleston to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Charleston (CHS) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 4, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$140
(Southwest)

One-way from

$75
(Southwest)

Popular in

June

Cheapest in

January

Average price

$398

Good round-trip deal

$244 or less

Good one-way deal

$189 or less
Provider with most accurate pricing for Charleston-Seattle/Tacoma Intl flight deals.
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Provider most trusted by Cheapflights users for Charleston-Seattle/Tacoma Intl flights.
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From Charleston to Seattle/Tacoma Intl
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One-way flight from Charleston to Seattle/Tacoma Intl
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($57 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from Charleston to Seattle/Tacoma Intl.
Search Deals
Price to beat on a one-way flight from Charleston to Seattle/Tacoma Intl.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Charleston to Seattle that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 4, 2025.
Use the filters below to find and compare flights from Charleston to Seattle that are best for you.

Fly from

Charleston

Fly to

Seattle

Route

Depart

Return

Price

CharlestonSeattle

CHS - SEA

CHSSEA

Charleston

Wed 1/7

1:45 pm-11:05 pm

2 stops12h 20m

Seattle/Tacoma Intl

Wed 1/14

9:55 am-8:50 pm

1 stop7h 55m

$152

CharlestonSeattle

CHS - SEA

CHSSEA

Charleston

Thu 1/22

1:45 pm-10:30 pm

1 stop11h 45m

Seattle/Tacoma Intl

Wed 1/28

6:05 am-7:10 pm

2 stops10h 05m

$200

CharlestonSeattle

CHS - SEA

CHSSEA

Charleston

Wed 2/4

7:55 am-5:50 pm

2 stops12h 55m

Seattle/Tacoma Intl

Sun 2/8

9:55 am-8:50 pm

1 stop7h 55m

$212

CharlestonSeattle

CHS - SEA

CHSSEA

Charleston

Thu 1/22

7:22 pm-10:29 pm

Nonstop6h 07m

Seattle/Tacoma Intl

Wed 1/28

10:11 am-6:22 pm

Nonstop5h 11m

$237

CharlestonSeattle

CHS - SEA

CHSSEA

Charleston

Wed 1/21

5:25 am-10:07 am

1 stop7h 42m

Seattle/Tacoma Intl

Mon 1/26

11:10 pm-11:09 am

1 stop8h 59m

$247

CharlestonSeattle

CHS - SEA

CHSSEA

Charleston

Thu 1/22

3:00 pm-8:46 pm

1 stop8h 46m

Seattle/Tacoma Intl

Tue 1/27

11:10 pm-11:09 am

1 stop8h 59m

$247

CharlestonSeattle

CHS - SEA

CHSSEA

Charleston

Sun 1/11

5:25 am-10:09 am

1 stop7h 44m

Seattle/Tacoma Intl

Wed 1/28

6:05 am-5:43 pm

1 stop8h 38m

$247

CharlestonSeattle

CHS - SEA

CHSSEA

Charleston

Thu 1/15

7:22 pm-10:29 pm

Nonstop6h 07m

Seattle/Tacoma Intl

Mon 1/19

10:11 am-6:22 pm

Nonstop5h 11m

$257

CharlestonSeattle

CHS - SEA

CHSSEA

Charleston

Sun 1/11

5:25 am-10:09 am

1 stop7h 44m

Seattle/Tacoma Intl

Tue 1/27

7:59 pm-7:18 pm

2 stops20h 19m

$261

CharlestonSeattle

CHS - SEA

CHSSEA

Charleston

Fri 5/8

11:00 am-8:53 pm

1 stop12h 53m

Seattle/Tacoma Intl

Sun 5/17

11:59 pm-2:40 pm

1 stop11h 41m

$298

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/4

Showing 1-10 of 20 results
1
2

Compare providers for flights from Charleston to Seattle

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Charleston to Seattle in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Charleston-Seattle flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Charleston-Seattle flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Charleston-Seattle flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Charleston-Seattle flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Charleston-Seattle flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Charleston to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Charleston with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Charleston to Seattle

How far ahead should I book a flight from Charleston to Seattle?

Use this chart to determine the optimal time to book a round-trip flight from Charleston to Seattle. Price data was last updated on November 28, 2025.

The price you pay for your flight from Charleston to Seattle may vary depending on when you book. For the best chance of a lower fare, look to book 12 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Charleston to Seattle?

Currently, December is the cheapest month in which you can book a flight from Charleston to Seattle (average of $178). Flying from Charleston to Seattle in June is currently the most expensive (average of $286). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from CHS to SEA?

Find hourly flight availability from Charleston to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 4, 2025.

A simple way to save on the total cost of your ticket is to fly from Charleston to Seattle at noon. If you’re flexible enough to do this you can expect to save up to 24% on your trip compared to booking a flight in the afternoon.

What is the cheapest day to fly from Charleston to Seattle?

Use this chart to determine the cheapest time to fly round-trip from Charleston to Seattle. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Charleston to Seattle flight should consider departing on Saturday at noon when fares are most often at their lowest. Monday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

The best insider tips for Charleston to Seattle flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Charleston to Seattle trip
Airports
CHS

For early departures, expect long security lines. Arrive early, especially during peak morning hours when many flights leave simultaneously.

Read more about CHSby Ramsey Qubein
SEA

Use the Link light rail from SEA to downtown Seattle. It's affordable, runs every 10 minutes, and takes less than 40 minutes.

Read more about SEAby Brandon Schultz
Our travel experts
Brandon Schultz

Brandon Schultz

Expert on SEA

Brandon Schultz

Brandon Schultz

Brandon Schultz is an award-winning food and travel writer based in New York City. His work has appeared in Forbes, AAA, Thrillist, Travel + Leisure, and The Daily Meal, among many others, and he is the author of 6 books, including 3 cookbooks.

Read more
Ramsey Qubein

Ramsey Qubein

Expert on CHS

Ramsey Qubein

Ramsey Qubein

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Seattle. Reviews last updated December 4, 2025.
See what other customers who have flown with Alaska Airlines, Delta, and Hawaiian Airlines from Charleston to Seattle have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,402 reviews

Food

7.1

Comfort

7.8

Entertainment

7.0

Overall

8.0

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Marcie,Nov 2025

PIT - SEA

It was not a full flight, so I was able to enjoy a row to myself. Luck of the draw, I guess.
Alaska Airlines
8.0
Very good
11,402 reviews
Alaska Airlines
8.0
Very good
11,402 reviews

Food

7.1

Comfort

7.8

Entertainment

7.0

Overall

8.0

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Marcie,Nov 2025

PIT - SEA

It was not a full flight, so I was able to enjoy a row to myself. Luck of the draw, I guess.
Delta
7.9
Good
8,011 reviews
Alaska Airlines
8.0
Very good
11,402 reviews

Food

7.1

Comfort

7.8

Entertainment

7.0

Overall

8.0

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Marcie,Nov 2025

PIT - SEA

It was not a full flight, so I was able to enjoy a row to myself. Luck of the draw, I guess.
Hawaiian Airlines
7.8
Good
2,817 reviews
Alaska Airlines
8.0
Very good
11,402 reviews

Food

7.1

Comfort

7.8

Entertainment

7.0

Overall

8.0

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Marcie,Nov 2025

PIT - SEA

It was not a full flight, so I was able to enjoy a row to myself. Luck of the draw, I guess.
United Airlines
7.4
Good
9,066 reviews
Alaska Airlines
8.0
Very good
11,402 reviews

Food

7.1

Comfort

7.8

Entertainment

7.0

Overall

8.0

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Marcie,Nov 2025

PIT - SEA

It was not a full flight, so I was able to enjoy a row to myself. Luck of the draw, I guess.
American Airlines
7.2
Good
11,047 reviews
Alaska Airlines
8.0
Very good
11,402 reviews

Food

7.1

Comfort

7.8

Entertainment

7.0

Overall

8.0

Boarding

8.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Marcie,Nov 2025

PIT - SEA

It was not a full flight, so I was able to enjoy a row to myself. Luck of the draw, I guess.

Related info for your journey

Find useful and relevant information for your journey from Charleston to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airports do I use to fly from Charleston to Seattle?

    If you book a flight from Charleston to Seattle, you will be flying from Charleston to Seattle/Tacoma Intl. Flights to Seattle/Tacoma Intl (SEA) from Charleston (CHS) take 5h 58m for a nonstop flight. There is 1 flight from Charleston to Seattle per day from 6 airlines.

  • How popular is this Charleston to Seattle flight route?

    Within the past month, 19 users have taken a look at flights from Charleston to Seattle/Tacoma Intl.

  • How long is the flight from Charleston to Seattle?

    A quick flight from Charleston to Seattle can take about 6h 07m. Southwest provides one of the quickest options available for as low as $237. There are 2409 mi between Charleston and Seattle. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Charleston to Seattle round-trip?

    Delta, at $98, was found to be the cheapest airline from Charleston to Seattle.Alternate airlines to your destination round-trip include Hawaiian Airlines and American Airlines. Delta is currently priced 74% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from Charleston to Seattle one-way?

    The cheapest airlines for a one-way flight from Charleston to Seattle are American Airlines ($103), United Airlines ($118), and Alaska Airlines ($118).

  • What are the cheapest flights from Charleston to Seattle?

    Looking at all options, your cheapest flight can be booked for $147. While the most popular route (Charleston - Seattle/Tacoma Intl) can be booked for $148 on average, our data indicates $331 when flying from Charleston to Seattle.

  • Can I find deals for flights from Charleston to Seattle that include hotel bookings?

    Yes. In addition to deals on Charleston to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Charleston to Seattle?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Charleston to Seattle.

  • Can I find deals for business class flights from Charleston to Seattle?

    Yes. Cheapflights offers flight deals from Charleston to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Charleston to Seattle?

    Currently, December is the cheapest month in which you can book a flight from Charleston to Seattle (average of $178). Flying from Charleston to Seattle in June is currently the most expensive (average of $286). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Tacoma
SeaTac
Lakewood
Olympia
Ocean Shores
Edmonds
Lynnwood
Renton
Puyallup
Kirkland
Kent
Tukwila
Cle Elum
Marysville
Leavenworth
Fife
Aberdeen
Shoreline
Centralia
Federal Way

Browse thousands of different options on Cheapflights for your next trip

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Top 6 airlines flying from Charleston to Seattle

Discover the top 6 airlines that operate flights from Charleston to Seattle. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$98Average$344FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$194Average$385FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$223Average$391FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$225Average$391FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$236Average$370FlexibilityNo cancel feeOn-time69%
Hawaiian AirlinesCheapest$257Average$382FlexibilityNo cancel feeOn-time85%

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