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$134+ 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 5/20. Fares are subject to change and may not be available on all flights or dates of travel.
CHS — SEA
May 3 — May 101
Sat 5/3
Sat 5/10
1 adult, Economy
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Cheapflights Tip: The best prices from Charleston to Seattle/Tacoma Intl are usually found in January or October, booked 68 days in advance, depart on a Wednesday or Friday and return on a Wednesday

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 April 28, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$287
(American Airlines)

One-way from

$144
(Delta)

Popular in

December

Cheapest in

January

Average price

$438

Good round-trip deal

$338 or less

Good one-way deal

$209 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
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High demand for flights, 2% potential price rise
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Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in April 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 April 28, 2025.

This Delta deal was found by Cheapflights users on 4/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/306:23 pmCHS - SEA
1 stop7h 38mDelta
Wed 8/65:55 amSEA - CHS
1 stop9h 05mDelta
Deal found 4/28$287
This United Airlines deal was found by Cheapflights users on 4/27. 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 5/116:30 amCHS - SEA
1 stop7h 55mUnited Airlines
Sun 8/247:34 pmSEA - CHS
2 stops12h 06mUnited Airlines
Deal found 4/27$292
This Alaska Airlines deal was found by Cheapflights users on 4/26. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/66:45 pmCHS - SEA
Nonstop5h 57mAlaska Airlines
Wed 12/109:15 amSEA - CHS
Nonstop5h 16mAlaska Airlines
Deal found 4/26$298
This American Airlines deal was found by Cheapflights users on 4/28. 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.
Mon 5/127:14 pmCHS - SEA
1 stop8h 31mAmerican Airlines
Thu 5/155:20 amSEA - CHS
1 stop8h 57mAmerican Airlines
Deal found 4/28$313
This Southwest deal was found by Cheapflights users on 4/27. 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.
Thu 9/116:10 amCHS - SEA
2 stops13h 35mSouthwest
Tue 9/169:10 pmSEA - CHS
1 stop9h 45mSouthwest
Deal found 4/27$324
This EaseMyTrip deal was found by Cheapflights users on 4/28. 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 EaseMyTrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/216:17 pmCHS - SEA
Nonstop5h 46mHawaiian Airlines
Mon 9/298:59 amSEA - CHS
Nonstop5h 18mHawaiian Airlines
Deal found 4/28$339
This Mytrip deal was found by Cheapflights users on 4/28. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/123:28 pmCHS - SEA
2 stops26h 35mMultiple Airlines
Thu 6/193:58 pmSEA - CHS
2 stops19h 33mMultiple Airlines
Deal found 4/28$424
This Mytrip deal was found by Cheapflights users on 4/28. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/201:10 pmCHS - SEA
3 stops28h 53mSpirit Airlines
Mon 6/233:58 pmSEA - CHS
2 stops27h 31mSpirit Airlines
Deal found 4/28$455

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 April 28, 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

Fri 5/30

11:43 am-5:28 pm

1 stop8h 45m

Seattle/Tacoma Intl

Tue 6/3

5:20 am-5:17 pm

1 stop8h 57m

$287

CharlestonSeattle

CHS - SEA

CHSSEA

Charleston

Sun 5/11

6:30 am-11:25 am

1 stop7h 55m

Seattle/Tacoma Intl

Sun 8/24

7:34 pm-10:40 am

2 stops12h 06m

$292

CharlestonSeattle

CHS - SEA

CHSSEA

Charleston

Wed 6/4

2:38 pm-10:00 pm

1 stop10h 22m

Seattle/Tacoma Intl

Fri 6/13

10:58 pm-12:13 pm

1 stop10h 15m

$312

CharlestonSeattle

CHS - SEA

CHSSEA

Charleston

Mon 6/30

5:00 pm-12:25 am

2 stops10h 25m

Seattle/Tacoma Intl

Thu 7/3

9:10 pm-10:15 am

1 stop10h 05m

$344

CharlestonSeattle

CHS - SEA

CHSSEA

Charleston

Thu 5/15

6:56 pm-9:59 pm

Nonstop6h 03m

Seattle/Tacoma Intl

Sun 5/25

9:30 am-5:51 pm

Nonstop5h 21m

$388

CharlestonSeattle

CHS - SEA

CHSSEA

Charleston

Tue 6/3

6:56 pm-9:59 pm

Nonstop6h 03m

Seattle/Tacoma Intl

Wed 6/11

9:30 am-5:51 pm

Nonstop5h 21m

$418

CharlestonSeattle

CHS - SEA

CHSSEA

Charleston

Thu 6/12

3:28 pm-3:03 pm

2 stops26h 35m

Seattle/Tacoma Intl

Thu 6/19

3:58 pm-2:31 pm

2 stops19h 33m

$424

CharlestonSeattle

CHS - SEA

CHSSEA

Charleston

Fri 6/20

1:10 pm-3:03 pm

3 stops28h 53m

Seattle/Tacoma Intl

Mon 6/23

3:58 pm-10:29 pm

2 stops27h 31m

$455

CharlestonSeattle

CHS - SEA

CHSSEA

Charleston

Tue 5/20

7:00 am-3:58 pm

2 stops11h 58m

$134

CharlestonSeattle

CHS - SEA

CHSSEA

Charleston

Tue 5/13

3:58 pm-9:50 pm

1 stop8h 52m

$144

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/27

Showing 1-10 of 17 results
1
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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 April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
PricelinePrice Accuracy2 starsTrust Score*3 stars
CheapTicketsDealPrice Accuracy3 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*3 stars

*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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Charleston-Seattle flight deals on Cheapflights vs. FlightHub >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 April 25, 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 56 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 July is currently the most expensive (average of $405). 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 April 28, 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 26% 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 afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Charleston to Seattle

Explore weekly flight availability from Charleston to Seattle. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated April 28, 2025.

The most flights from CHS to SEA are scheduled on a Monday (2 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (1 on average).

Rainfall in Seattle by month

Plan your trip to Seattle by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Seattle ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit Seattle when rainfall is around 0.7 in.

Temperature in Seattle by month

Plan your trip to Seattle by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Seattle, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

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 April 28, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Southwest and Delta from Charleston to Seattle to help guide your decision. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,949 reviews

Entertainment

7.1

Comfort

7.9

Boarding

8.2

Food

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Alaska Airlines
8.0
Very good
9,949 reviews
Alaska Airlines
8.0
Very good
9,949 reviews

Entertainment

7.1

Comfort

7.9

Boarding

8.2

Food

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Southwest
8.0
Very good
4,292 reviews
Alaska Airlines
8.0
Very good
9,949 reviews

Entertainment

7.1

Comfort

7.9

Boarding

8.2

Food

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Delta
8.0
Very good
7,929 reviews
Alaska Airlines
8.0
Very good
9,949 reviews

Entertainment

7.1

Comfort

7.9

Boarding

8.2

Food

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Hawaiian Airlines
7.9
Good
2,402 reviews
Alaska Airlines
8.0
Very good
9,949 reviews

Entertainment

7.1

Comfort

7.9

Boarding

8.2

Food

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
United Airlines
7.4
Good
8,696 reviews
Alaska Airlines
8.0
Very good
9,949 reviews

Entertainment

7.1

Comfort

7.9

Boarding

8.2

Food

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

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 46m 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, 14 users have taken a look at flights from Charleston to Seattle/Tacoma Intl.

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

    American Airlines, at $287, was found to be the cheapest airline from Charleston to Seattle.Alternate airlines to your destination round-trip include United Airlines and Delta. American Airlines is currently priced 31% 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 Delta ($144), United Airlines ($149), and Southwest ($175).

  • What are the cheapest flights from Charleston to Seattle?

    Looking at all options, your cheapest flight can be booked for $149. While the most popular route (Charleston - Seattle/Tacoma Intl) can be booked for $287 on average our data indicates $409 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 July is currently the most expensive (average of $405). 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 Charleston?

Book flights to Charleston if you plan to visit one of these locations
SeaTac
Tukwila
Tacoma
Renton
Lakewood
Ocean Shores
Lacey
Leavenworth
Federal Way
Olympia
Shoreline
Cle Elum
Centralia
Kent
Aberdeen
Lynnwood
Shelton
Silverdale
Redmond
Issaquah

Browse thousands of different options on Cheapflights for your next trip

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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 April 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$182Average$279FlexibilityNo cancel feeOn-time65%
DeltaCheapest$199Average$421FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$236Average$443FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$236Average$431FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$256Average$430FlexibilityNo cancel feeOn-time71%
Hawaiian AirlinesCheapest$268Average$388FlexibilityNo cancel feeOn-time85%

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