HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Seattle

$144+ 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 4/29. Fares are subject to change and may not be available on all flights or dates of travel.
CHS — SEA
Apr 20 — Apr 271
Sun 4/20
Sun 4/27
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

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”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Charleston to Seattle/Tacoma Intl are usually found in January or August, 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 15, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$257
(Delta)

One-way from

$144
(Delta)

Popular in

December

Cheapest in

January

Average price

$437

Good round-trip deal

$338 or less

Good one-way deal

$198 or less
Provider with most accurate pricing for Charleston-Seattle/Tacoma Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Charleston-Seattle/Tacoma Intl flights.
Search Deals
From Charleston to Seattle/Tacoma Intl
Search Deals
One-way flight from Charleston to Seattle/Tacoma Intl
Search Deals
High demand for flights, 3% potential price rise
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($9 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 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

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 15, 2025.

This Delta deal was found by Cheapflights users on 4/13. 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.
Thu 5/84:59 pmCHS - SEA
1 stop8h 01mDelta
Sat 5/106:00 amSEA - CHS
1 stop9h 05mDelta
Deal found 4/13$257
This Hawaiian Airlines deal was found by Cheapflights users on 4/14. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/56:54 pmCHS - SEA
Nonstop6h 06mHawaiian Airlines
Sat 5/109:41 amSEA - CHS
Nonstop5h 13mHawaiian Airlines
Deal found 4/14$268
This United Airlines deal was found by Cheapflights users on 4/14. 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 5/154:05 pmCHS - SEA
1 stop9h 58mUnited Airlines
Sun 5/1811:59 pmSEA - CHS
1 stop7h 32mUnited Airlines
Deal found 4/14$284
This Alaska Airlines deal was found by Cheapflights users on 4/13. 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.
Thu 5/86:54 pmCHS - SEA
Nonstop6h 06mAlaska Airlines
Sun 5/119:41 amSEA - CHS
Nonstop5h 13mAlaska Airlines
Deal found 4/13$298
This Southwest deal was found by Cheapflights users on 4/14. 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 9/36:35 amCHS - SEA
2 stops11h 30mSouthwest
Tue 9/99:10 pmSEA - CHS
1 stop9h 45mSouthwest
Deal found 4/14$307
This American Airlines deal was found by Cheapflights users on 4/14. 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 6/47:14 pmCHS - SEA
1 stop8h 31mAmerican Airlines
Thu 6/121:22 amSEA - CHS
1 stop7h 33mAmerican Airlines
Deal found 4/14$313
This Mytrip deal was found by Cheapflights users on 4/13. 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 5/89:43 amCHS - SEA
2 stops31h 42mSpirit Airlines
Sun 5/113:20 pmSEA - CHS
3 stops17h 13mSpirit Airlines
Deal found 4/13$326
This Mytrip deal was found by Cheapflights users on 4/14. 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 5/1512:47 pmCHS - SEA
1 stop24h 58mMultiple Airlines
Sun 5/183:20 pmSEA - CHS
2 stops20h 15mMultiple Airlines
Deal found 4/14$336

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 15, 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

Thu 5/8

4:59 pm-10:00 pm

1 stop8h 01m

Seattle/Tacoma Intl

Sat 5/10

6:00 am-6:05 pm

1 stop9h 05m

$257

CharlestonSeattle

CHS - SEA

CHSSEA

Charleston

Mon 5/5

6:54 pm-10:00 pm

Nonstop6h 06m

Seattle/Tacoma Intl

Sat 5/10

9:41 am-5:54 pm

Nonstop5h 13m

$268

CharlestonSeattle

CHS - SEA

CHSSEA

Charleston

Thu 5/15

4:05 pm-11:03 pm

1 stop9h 58m

Seattle/Tacoma Intl

Sun 5/18

11:59 pm-10:31 am

1 stop7h 32m

$284

CharlestonSeattle

CHS - SEA

CHSSEA

Charleston

Thu 5/8

6:54 pm-10:00 pm

Nonstop6h 06m

Seattle/Tacoma Intl

Sun 5/11

9:41 am-5:54 pm

Nonstop5h 13m

$298

CharlestonSeattle

CHS - SEA

CHSSEA

Charleston

Wed 9/3

6:35 am-3:05 pm

2 stops11h 30m

Seattle/Tacoma Intl

Tue 9/9

9:10 pm-9:55 am

1 stop9h 45m

$307

CharlestonSeattle

CHS - SEA

CHSSEA

Charleston

Wed 6/4

7:14 pm-12:45 am

1 stop8h 31m

Seattle/Tacoma Intl

Thu 6/12

1:22 am-11:55 am

1 stop7h 33m

$313

CharlestonSeattle

CHS - SEA

CHSSEA

Charleston

Thu 5/8

9:43 am-2:25 pm

2 stops31h 42m

Seattle/Tacoma Intl

Sun 5/11

3:20 pm-11:33 am

3 stops17h 13m

$326

CharlestonSeattle

CHS - SEA

CHSSEA

Charleston

Thu 5/15

12:47 pm-10:45 am

1 stop24h 58m

Seattle/Tacoma Intl

Sun 5/18

3:20 pm-2:35 pm

2 stops20h 15m

$336

CharlestonSeattle

CHS - SEA

CHSSEA

Charleston

Fri 5/2

12:50 pm-8:03 pm

1 stop10h 13m

$144

CharlestonSeattle

CHS - SEA

CHSSEA

Charleston

Tue 4/29

6:30 am-3:58 pm

2 stops12h 28m

$149

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/14

Showing 1-10 of 17 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 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
CheapTicketsDealPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust 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 11, 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 $411). 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 15, 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 15, 2025.

The most flights from CHS to SEA are scheduled on a Monday (2 on average). You will have fewer flight options on Wednesday, 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 15, 2025.
Alaska Airlines
8.0
Very good
9,876 reviews

Overall

8.0

Comfort

7.9

Entertainment

7.1

Crew

8.5

Boarding

8.2

Food

7.1

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
9,876 reviews
Alaska Airlines
8.0
Very good
9,876 reviews

Overall

8.0

Comfort

7.9

Entertainment

7.1

Crew

8.5

Boarding

8.2

Food

7.1

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
4,279 reviews
Alaska Airlines
8.0
Very good
9,876 reviews

Overall

8.0

Comfort

7.9

Entertainment

7.1

Crew

8.5

Boarding

8.2

Food

7.1

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
7,917 reviews
Alaska Airlines
8.0
Very good
9,876 reviews

Overall

8.0

Comfort

7.9

Entertainment

7.1

Crew

8.5

Boarding

8.2

Food

7.1

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
2,374 reviews
Alaska Airlines
8.0
Very good
9,876 reviews

Overall

8.0

Comfort

7.9

Entertainment

7.1

Crew

8.5

Boarding

8.2

Food

7.1

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
8,658 reviews
Alaska Airlines
8.0
Very good
9,876 reviews

Overall

8.0

Comfort

7.9

Entertainment

7.1

Crew

8.5

Boarding

8.2

Food

7.1

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 49m 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, 10 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?

    Delta, at $257, was found to be the cheapest airline from Charleston to Seattle.Alternate airlines to your destination round-trip include Hawaiian Airlines and United Airlines. Delta is currently priced 38% 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 Spirit Airlines ($176).

  • 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 $248 on average our data indicates $358 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 $411). 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
Aberdeen
Kent
Lynnwood
Shelton
Silverdale
Redmond
Issaquah

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Charleston to Seattle

See prices for flight routes from nearby airports that may be better suited for you.
Charlotte to Seattle flights
Charlotte to Portland flights
Greenville to Seattle flights
Savannah to Seattle flights
Columbia to Seattle flights
Myrtle Beach to Seattle flights
Charlotte to Spokane flights
Augusta to Seattle flights
Charleston to Portland flights
Greenville to Portland flights
Savannah to Spokane flights
Charleston to Spokane flights
Myrtle Beach to Portland flights
Columbia to Portland flights
Savannah to Portland flights
Greenville to Spokane flights
Augusta to Portland flights
Charlotte to Pasco flights
Columbia to Spokane flights
Columbia to Pasco flights
Hilton Head Island to Seattle flights
Florence to Seattle flights
Savannah to Pasco flights
Charlotte to Yakima flights
Savannah to Wenatchee flights
Savannah to Yakima flights
Florence to Portland flights
Florence to Spokane flights
Charlotte to Pullman flights
Charlotte to Walla Walla flights
Augusta to Pasco flights

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 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$182Average$279FlexibilityNo cancel feeOn-time65%
DeltaCheapest$212Average$429FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$235Average$444FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$236Average$430FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$257Average$423FlexibilityNo cancel feeOn-time71%
Hawaiian AirlinesCheapest$268Average$433FlexibilityNo cancel feeOn-time85%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.