HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Seattle

$104+ 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 9/6. Fares are subject to change and may not be available on all flights or dates of travel.
CHS — SEA
Aug 2 — Aug 91
Sat 8/2
Sat 8/9
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 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 July 28, 2025.

Round-trip from

$273
(Southwest)

One-way from

$104
(American Airlines)

Popular in

December

Cheapest in

January

Average price

$418

Good round-trip deal

$314 or less

Good one-way deal

$169 or less
From Charleston to Seattle/Tacoma Intl
Search Deals
One-way flight from Charleston to Seattle/Tacoma Intl
Search Deals
High demand for flights, 0% potential price rise
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 July 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 July 28, 2025.

This Southwest deal was found by Cheapflights users on 7/28. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/710:40 amCHS - SEA
2 stops12h 55mSouthwest
Fri 11/145:35 amSEA - CHS
1 stop6h 35mSouthwest
Deal found 7/28$267
This Hawaiian Airlines deal was found by Cheapflights users on 7/28. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/187:23 pmCHS - SEA
Nonstop5h 52mHawaiian Airlines
Mon 10/279:40 amSEA - CHS
Nonstop5h 14mHawaiian Airlines
Deal found 7/28$277
This American Airlines deal was found by Cheapflights users on 7/27. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/104:30 pmCHS - SEA
1 stop7h 24mAmerican Airlines
Tue 10/1411:42 amSEA - CHS
1 stop9h 07mAmerican Airlines
Deal found 7/27$282
This Netflights deal was found by Cheapflights users on 7/26. 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 Netflights is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/216:17 pmCHS - SEA
Nonstop5h 50mAlaska Airlines
Mon 9/298:58 amSEA - CHS
Nonstop5h 19mAlaska Airlines
Deal found 7/26$293
This United Airlines deal was found by Cheapflights users on 7/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/226:05 amCHS - SEA
1 stop8h 26mUnited Airlines
Sat 9/67:34 pmSEA - CHS
2 stops11h 33mUnited Airlines
Deal found 7/28$304
This Delta deal was found by Cheapflights users on 7/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/63:20 pmCHS - SEA
1 stop8h 04mDelta
Sat 9/137:25 amSEA - CHS
2 stops13h 23mDelta
Deal found 7/27$314
This Trip.com deal was found by Cheapflights users on 7/26. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/96:17 pmCHS - SEA
Nonstop5h 50mMultiple Airlines
Mon 9/1512:59 amSEA - CHS
1 stop7h 31mMultiple Airlines
Deal found 7/26$369

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 July 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

Sun 9/7

8:40 am-7:50 pm

1 stop14h 10m

Seattle/Tacoma Intl

Fri 9/12

6:15 am-10:40 pm

1 stop13h 25m

$273

CharlestonSeattle

CHS - SEA

CHSSEA

Charleston

Sat 9/6

3:20 pm-8:24 pm

1 stop8h 04m

Seattle/Tacoma Intl

Sat 9/13

9:58 pm-12:07 pm

1 stop11h 09m

$277

CharlestonSeattle

CHS - SEA

CHSSEA

Charleston

Fri 10/10

4:30 pm-8:54 pm

1 stop7h 24m

Seattle/Tacoma Intl

Tue 10/14

11:42 am-11:49 pm

1 stop9h 07m

$282

CharlestonSeattle

CHS - SEA

CHSSEA

Charleston

Mon 8/25

2:48 pm-10:59 pm

2 stops11h 11m

Seattle/Tacoma Intl

Wed 9/3

5:02 am-3:10 pm

1 stop7h 08m

$287

CharlestonSeattle

CHS - SEA

CHSSEA

Charleston

Sun 9/21

6:17 pm-9:07 pm

Nonstop5h 50m

Seattle/Tacoma Intl

Mon 9/29

8:58 am-5:17 pm

Nonstop5h 19m

$293

CharlestonSeattle

CHS - SEA

CHSSEA

Charleston

Thu 8/21

6:17 pm-9:03 pm

Nonstop5h 46m

Seattle/Tacoma Intl

Sat 8/30

9:25 am-5:40 pm

Nonstop5h 15m

$297

CharlestonSeattle

CHS - SEA

CHSSEA

Charleston

Tue 9/9

6:17 pm-9:07 pm

Nonstop5h 50m

Seattle/Tacoma Intl

Mon 9/15

12:59 am-11:30 am

1 stop7h 31m

$369

CharlestonSeattle

CHS - SEA

CHSSEA

Charleston

Sat 9/6

3:10 pm-10:04 pm

1 stop9h 54m

$104

CharlestonSeattle

CHS - SEA

CHSSEA

Charleston

Wed 8/27

10:45 am-9:40 pm

1 stop13h 55m

$109

CharlestonSeattle

CHS - SEA

CHSSEA

Charleston

Tue 9/2

6:17 pm-9:07 pm

Nonstop5h 50m

$149

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/26

Showing 1-10 of 15 results
1
2

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 July 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 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 $389). 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 July 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 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.

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 July 28, 2025.
See what other customers who have flown with Alaska Airlines, Southwest, and Delta 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

Boarding

8.1

Food

7.1

Comfort

7.8

Crew

8.5

Entertainment

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Food

7.1

Comfort

7.8

Crew

8.5

Entertainment

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.
Southwest
8.0
Very good
4,237 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Food

7.1

Comfort

7.8

Crew

8.5

Entertainment

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.
Delta
8.0
Very good
7,971 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Food

7.1

Comfort

7.8

Crew

8.5

Entertainment

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.
Hawaiian Airlines
7.8
Good
2,604 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Food

7.1

Comfort

7.8

Crew

8.5

Entertainment

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.
United Airlines
7.4
Good
8,893 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Food

7.1

Comfort

7.8

Crew

8.5

Entertainment

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.

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, 18 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?

    Southwest, at $273, was found to be the cheapest airline from Charleston to Seattle.Alternate airlines to your destination round-trip include Alaska Airlines and American Airlines. Southwest 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 American Airlines ($104), Southwest ($109), and Hawaiian Airlines ($149).

  • 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 $252 on average our data indicates $343 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 $389). 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
Ocean Shores
Lakewood
Lynnwood
Lacey
Leavenworth
Renton
Olympia
Puyallup
Kent
Cle Elum
Chehalis
Kirkland
Issaquah
Aberdeen
Shoreline
Federal Way
Shelton

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
Greenville to Seattle flights
Charlotte to Portland flights
Augusta to Seattle flights
Savannah to Seattle flights
Myrtle Beach to Seattle flights
Columbia to Portland flights
Columbia to Seattle flights
Greenville to Portland flights
Myrtle Beach to Portland flights
Charleston to Portland flights
Savannah to Portland flights
Charleston to Spokane flights
Charlotte to Spokane flights
Savannah to Spokane flights
Greenville to Spokane flights
Columbia to Spokane flights
Charlotte to Pasco flights
Augusta to Portland flights
Columbia to Pasco flights
Augusta to Pasco flights
Florence to Seattle flights
Savannah to Pasco flights
Florence to Portland flights
Hilton Head Island to Seattle flights
Savannah to Yakima flights
Savannah to Wenatchee flights
Florence to Spokane flights
Charlotte to Yakima flights
Charlotte to Pullman flights
Charlotte to Walla Walla 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 July 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$128Average$395FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$235Average$419FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$236Average$386FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$246Average$392FlexibilityNo cancel feeOn-time71%
Hawaiian AirlinesCheapest$257Average$393FlexibilityNo cancel feeOn-time85%
SouthwestCheapest$322Average$447FlexibilityNo cancel feeOn-time63%

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.