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$90+ 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 10/24. Fares are subject to change and may not be available on all flights or dates of travel.
CHS — SEA
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheapflights Tip: The best prices from Charleston to Seattle/Tacoma Intl are usually found in January or September, booked 77 days in advance, depart on a Tuesday or Wednesday and return on a Tuesday

Cheap 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 September 11, 2025.

Round-trip from

$178
(American Airlines)

One-way from

$90
(American Airlines)

Popular in

June

Cheapest in

January

Average price

$318

Good round-trip deal

$297 or less

Good one-way deal

$168 or less
From Charleston to Seattle/Tacoma Intl
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One-way flight from Charleston to Seattle/Tacoma Intl
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Highest demand for flights based on searches. 9% potential increase in price ($43 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Charleston to Seattle/Tacoma Intl.
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Price to beat on a one-way flight from Charleston to Seattle/Tacoma Intl.
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Find 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 September 11, 2025.

This American Airlines deal was found by Cheapflights users on 9/10. 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.
Wed 10/155:34 pmCHS - SEA
1 stop7h 44mAmerican Airlines
Tue 10/218:49 pmSEA - CHS
1 stop9h 12mAmerican Airlines
Deal found 9/10$178
This American Airlines deal was found by Cheapflights users on 9/11. 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.
Tue 10/215:34 pmCHS - SEA
1 stop7h 44mAmerican Airlines
Fri 10/248:49 pmSEA - CHS
1 stop10h 03mAmerican Airlines
Deal found 9/11$179
This American Airlines deal was found by Cheapflights users on 9/9. 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.
Sat 11/84:15 pmCHS - SEA
2 stops10h 03mAmerican Airlines
Fri 11/1412:59 amSEA - CHS
1 stop9h 18mAmerican Airlines
Deal found 9/9$184
This American Airlines deal was found by Cheapflights users on 9/10. 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.
Sat 10/410:31 amCHS - SEA
1 stop7h 47mAmerican Airlines
Tue 10/78:49 pmSEA - CHS
1 stop9h 12mAmerican Airlines
Deal found 9/10$189
This Southwest deal was found by Cheapflights users on 9/11. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/14:15 pmCHS - SEA
1 stop8h 30mSouthwest
Tue 11/115:40 amSEA - CHS
2 stops10h 00mSouthwest
Deal found 9/11$192
This American Airlines deal was found by Cheapflights users on 9/10. 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.
Wed 11/53:21 pmCHS - SEA
1 stop11h 21mAmerican Airlines
Mon 11/1010:07 pmSEA - CHS
1 stop8h 39mAmerican Airlines
Deal found 9/10$203
This American Airlines deal was found by Cheapflights users on 9/10. 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.
Sat 11/84:15 pmCHS - SEA
2 stops10h 03mAmerican Airlines
Tue 11/1812:41 amSEA - CHS
1 stop8h 15mAmerican Airlines
Deal found 9/10$208
This American Airlines deal was found by Cheapflights users on 9/10. 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.
Wed 9/243:57 pmCHS - SEA
1 stop9h 07mAmerican Airlines
Tue 9/3011:38 pmSEA - CHS
1 stop7h 04mAmerican Airlines
Deal found 9/10$211
This American Airlines deal was found by Cheapflights users on 9/10. 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.
Sat 10/410:31 amCHS - SEA
1 stop7h 47mAmerican Airlines
Sat 10/118:49 pmSEA - CHS
1 stop9h 12mAmerican Airlines
Deal found 9/10$227
This Southwest deal was found by Cheapflights users on 9/10. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/57:00 amCHS - SEA
2 stops17h 50mSouthwest
Mon 11/106:35 amSEA - CHS
1 stop7h 05mSouthwest
Deal found 9/10$228
This United Airlines deal was found by Cheapflights users on 9/11. 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 10/2111:31 amCHS - SEA
2 stops13h 03mUnited Airlines
Fri 10/2411:40 pmSEA - CHS
1 stop7h 55mUnited Airlines
Deal found 9/11$232

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 September 11, 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 10/29

6:59 pm-9:59 pm

Nonstop6h 00m

Seattle/Tacoma Intl

Wed 11/5

9:40 am-5:54 pm

Nonstop5h 14m

$237

CharlestonSeattle

CHS - SEA

CHSSEA

Charleston

Tue 10/21

7:23 pm-10:15 pm

Nonstop5h 52m

Seattle/Tacoma Intl

Sat 10/25

9:56 am-6:17 pm

Nonstop5h 21m

$237

CharlestonSeattle

CHS - SEA

CHSSEA

Charleston

Tue 10/7

7:23 pm-10:15 pm

Nonstop5h 52m

Seattle/Tacoma Intl

Sat 10/18

9:56 am-6:17 pm

Nonstop5h 21m

$237

CharlestonSeattle

CHS - SEA

CHSSEA

Charleston

Sat 10/18

4:14 pm-11:54 pm

1 stop10h 40m

Seattle/Tacoma Intl

Sat 10/25

9:59 pm-12:10 pm

1 stop11h 11m

$257

CharlestonSeattle

CHS - SEA

CHSSEA

Charleston

Fri 12/5

7:24 pm-10:30 pm

Nonstop6h 06m

Seattle/Tacoma Intl

Tue 12/9

10:07 am-6:24 pm

Nonstop5h 17m

$257

CharlestonSeattle

CHS - SEA

CHSSEA

Charleston

Tue 9/23

7:00 am-3:52 pm

2 stops11h 52m

Seattle/Tacoma Intl

Tue 9/30

11:40 pm-10:35 am

1 stop7h 55m

$260

CharlestonSeattle

CHS - SEA

CHSSEA

Charleston

Fri 10/3

3:20 pm-8:15 pm

1 stop7h 55m

Seattle/Tacoma Intl

Tue 10/7

9:59 pm-12:10 pm

1 stop11h 11m

$277

CharlestonSeattle

CHS - SEA

CHSSEA

Charleston

Thu 10/23

7:23 pm-10:15 pm

Nonstop5h 52m

Seattle/Tacoma Intl

Mon 10/27

9:40 am-5:54 pm

Nonstop5h 14m

$277

CharlestonSeattle

CHS - SEA

CHSSEA

Charleston

Sat 11/8

1:25 pm-9:00 pm

2 stops10h 35m

Seattle/Tacoma Intl

Wed 11/19

5:40 am-8:35 pm

2 stops11h 55m

$296

CharlestonSeattle

CHS - SEA

CHSSEA

Charleston

Sun 11/9

5:25 am-10:15 am

1 stop7h 50m

Seattle/Tacoma Intl

Sat 11/15

2:02 pm-11:57 pm

1 stop6h 55m

$297

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 22 results
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The best insider tips for Charleston to Seattle flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
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

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 August 29, 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 77 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, January is the cheapest month in which you can book a flight from Charleston to Seattle (average of $238). Flying from Charleston to Seattle in June is currently the most expensive (average of $388). 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 September 11, 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 25% 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. Saturday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

How much does it cost to fly round-trip from Charleston to Seattle?

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 September 11, 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
10,000 reviews

Comfort

7.8

Entertainment

7.0

Overall

8.0

Food

7.1

Crew

8.5

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

MFR - SEA

Great smooth flight. Was hour and half late though. Don't know why
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.0

Overall

8.0

Food

7.1

Crew

8.5

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

MFR - SEA

Great smooth flight. Was hour and half late though. Don't know why
Delta
8.0
Very good
7,960 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.0

Overall

8.0

Food

7.1

Crew

8.5

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

MFR - SEA

Great smooth flight. Was hour and half late though. Don't know why
Hawaiian Airlines
7.8
Good
2,723 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.0

Overall

8.0

Food

7.1

Crew

8.5

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

MFR - SEA

Great smooth flight. Was hour and half late though. Don't know why
United Airlines
7.4
Good
8,937 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.0

Overall

8.0

Food

7.1

Crew

8.5

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

MFR - SEA

Great smooth flight. Was hour and half late though. Don't know why
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.0

Overall

8.0

Food

7.1

Crew

8.5

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

MFR - SEA

Great smooth flight. Was hour and half late though. Don't know why

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 50m 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, 17 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 5h 52m. Hawaiian Airlines 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 Alaska Airlines and United 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 ($90), Southwest ($112), and United Airlines ($114).

  • What are the cheapest flights from Charleston to Seattle?

    Looking at all options, your cheapest flight can be booked for $148. While the most popular route (Charleston - Seattle/Tacoma Intl) can be booked for $210 on average, our data indicates $344 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, January is the cheapest month in which you can book a flight from Charleston to Seattle (average of $238). Flying from Charleston to Seattle in June is currently the most expensive (average of $388). 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
SeaTac
Tukwila
Tacoma
Lakewood
Ocean Shores
Lynnwood
Edmonds
Leavenworth
Lacey
Renton
Olympia
Kent
Federal Way
Cle Elum
Puyallup
Chehalis
Kirkland
Issaquah
Aberdeen
Shoreline

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Alternative routes for Charleston to Seattle

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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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$98Average$382FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$225Average$414FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$226Average$386FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$228Average$383FlexibilityNo cancel feeOn-time71%
Hawaiian AirlinesCheapest$257Average$380FlexibilityNo cancel feeOn-time85%
SouthwestCheapest$322Average$446FlexibilityNo cancel feeOn-time63%

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