$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 2/25. Fares are subject to change and may not be available on all flights or dates of travel.
CHS — SEA
Feb 28 — Mar 71
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 February or October, booked 12 days in advance, depart on a Tuesday or Wednesday and return on a Saturday
Cheap flight deals from Charleston to Seattle
Cheapest flights from Charleston to SeattleExplore 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 January 29, 2026.
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 January 29, 2026.
This American Airlines deal was found by Cheapflights users on 1/27. 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.
Tue 2/176:05 am
CHS
- SEA
1 stop8h 22m
American Airlines
Wed 2/186:00 am
SEA
- CHS
1 stop8h 20m
American Airlines
Deal found 1/27![American Airlines logo]()
$179
This CheapOair deal was found by Cheapflights users on 1/27. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/176:32 pm
CHS
- SEA
Nonstop6h 14m
Alaska Airlines
Sat 2/219:28 am
SEA
- CHS
Nonstop5h 04m
Alaska Airlines
Deal found 1/27![Alaska Airlines logo]()
$197
This American Airlines deal was found by Cheapflights users on 1/27. 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.
Tue 4/146:23 pm
CHS
- SEA
1 stop8h 16m
American Airlines
Fri 4/1710:47 pm
SEA
- CHS
1 stop9h 51m
American Airlines
Deal found 1/27![American Airlines logo]()
$207
This Delta deal was found by Cheapflights users on 1/27. 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.
Tue 5/54:35 pm
CHS
- SEA
1 stop8h 30m
Delta
Wed 5/139:20 pm
SEA
- CHS
1 stop9h 22m
Delta
Deal found 1/27![Delta logo]()
$212
This Delta deal was found by Cheapflights users on 1/28. 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.
Tue 4/286:00 am
CHS
- SEA
1 stop11h 42m
Delta
Sun 5/39:45 pm
SEA
- CHS
1 stop9h 24m
Delta
Deal found 1/28![Delta logo]()
$217
This American Airlines deal was found by Cheapflights users on 1/27. 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.
Wed 2/117:32 am
CHS
- SEA
1 stop11h 02m
American Airlines
Wed 2/186:00 am
SEA
- CHS
1 stop8h 20m
American Airlines
Deal found 1/27![American Airlines logo]()
$219
This United Airlines deal was found by Cheapflights users on 1/28. 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.
Tue 2/245:05 pm
CHS
- SEA
1 stop8h 38m
United Airlines
Fri 2/2712:25 pm
SEA
- CHS
1 stop8h 19m
United Airlines
Deal found 1/28![United Airlines logo]()
$247
This United Airlines deal was found by Cheapflights users on 1/27. 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.
Wed 4/84:00 pm
CHS
- SEA
1 stop9h 56m
United Airlines
Sun 4/1211:59 pm
SEA
- CHS
1 stop9h 26m
United Airlines
Deal found 1/27![United Airlines logo]()
$248
This American Airlines deal was found by Cheapflights users on 1/27. 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 2/205:10 am
CHS
- SEA
1 stop10h 41m
American Airlines
Tue 2/2412:07 am
SEA
- CHS
1 stop8h 32m
American Airlines
Deal found 1/27![American Airlines logo]()
$249
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 January 29, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $179 (American Airlines) |
One-way from | $90 (American Airlines) |
Popular in | June |
Cheapest in | February |
Average price | $326 |
Good round-trip deal | $307 or less |
Good one-way deal | $148 or less |
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 January 29, 2026.
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 2/13
7:21 pm-12:55 am
1 stop8h 34m
Seattle/Tacoma Intl
Fri 2/20
1:44 pm-11:51 pm
1 stop7h 07m
$219
CharlestonSeattle
CHS - SEA
CHSSEA
Charleston
Tue 2/24
2:48 pm-11:51 pm
2 stops12h 03m
Seattle/Tacoma Intl
Fri 2/27
12:25 pm-11:44 pm
1 stop8h 19m
$252
CharlestonSeattle
CHS - SEA
CHSSEA
Charleston
Tue 4/14
4:55 pm-10:37 pm
1 stop8h 42m
Seattle/Tacoma Intl
Fri 4/17
11:59 pm-2:53 pm
2 stops11h 54m
$253
CharlestonSeattle
CHS - SEA
CHSSEA
Charleston
Fri 2/13
5:05 pm-10:43 pm
1 stop8h 38m
Seattle/Tacoma Intl
Fri 2/20
11:59 pm-2:49 pm
2 stops11h 50m
$263
CharlestonSeattle
CHS - SEA
CHSSEA
Charleston
Sat 2/7
1:13 pm-6:14 pm
1 stop8h 01m
Seattle/Tacoma Intl
Tue 2/10
7:00 am-11:44 pm
2 stops13h 44m
$283
CharlestonSeattle
CHS - SEA
CHSSEA
Charleston
Tue 2/10
10:15 am-6:16 pm
1 stop11h 01m
Seattle/Tacoma Intl
Thu 2/19
11:59 pm-12:30 pm
1 stop9h 31m
$315
CharlestonSeattle
CHS - SEA
CHSSEA
Charleston
Wed 2/11
9:05 am-5:50 pm
2 stops11h 45m
Seattle/Tacoma Intl
Wed 2/18
6:05 am-8:00 pm
2 stops10h 55m
$337
CharlestonSeattle
CHS - SEA
CHSSEA
Charleston
Tue 4/14
1:15 pm-10:30 pm
2 stops12h 15m
Seattle/Tacoma Intl
Fri 4/17
8:10 am-9:55 pm
2 stops10h 45m
$338
CharlestonSeattle
CHS - SEA
CHSSEA
Charleston
Sat 7/11
5:15 pm-12:05 am
1 stop9h 50m
Seattle/Tacoma Intl
Mon 7/20
11:50 pm-2:13 pm
2 stops11h 23m
$345
CharlestonSeattle
CHS - SEA
CHSSEA
Charleston
Thu 3/5
7:40 am-10:35 pm
2 stops17h 55m
Seattle/Tacoma Intl
Mon 3/9
11:55 pm-1:35 pm
2 stops10h 40m
$347
Showing 1-10 of 23 results
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 January.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*2 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star |
- 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 FlightHub the most. FlightHub 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 January 23, 2026.
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, February 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 January 29, 2026.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Charleston to Seattle as you normally would.
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
Our travel experts
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 January 29, 2026.
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.
Comfort
7.8
Entertainment
7.0
Crew
8.5
Boarding
8.1
Overall
8.0
Food
7.1
Reviews
1 / 20
10.0
ExcellentAnonymous,Dec 2025
SJC - SEA
Comfort
7.8
Entertainment
7.0
Crew
8.5
Boarding
8.1
Overall
8.0
Food
7.1
Reviews
1 / 20
10.0
ExcellentAnonymous,Dec 2025
SJC - SEA
Comfort
7.8
Entertainment
7.0
Crew
8.5
Boarding
8.1
Overall
8.0
Food
7.1
Reviews
1 / 20
10.0
ExcellentAnonymous,Dec 2025
SJC - SEA
Comfort
7.8
Entertainment
7.0
Crew
8.5
Boarding
8.1
Overall
8.0
Food
7.1
Reviews
1 / 20
10.0
ExcellentAnonymous,Dec 2025
SJC - SEA
Comfort
7.8
Entertainment
7.0
Crew
8.5
Boarding
8.1
Overall
8.0
Food
7.1
Reviews
1 / 20
10.0
ExcellentAnonymous,Dec 2025
SJC - SEA
Comfort
7.8
Entertainment
7.0
Crew
8.5
Boarding
8.1
Overall
8.0
Food
7.1
Reviews
1 / 20
10.0
ExcellentAnonymous,Dec 2025
SJC - SEA
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.
Traveling to a place near Seattle?
Book flights to Seattle if you plan to visit one of these locationsTacoma
SeaTac
Lakewood
Ocean Shores
Olympia
Lynnwood
Lacey
Edmonds
Renton
Puyallup
Kirkland
Kent
Tukwila
Fife
Aberdeen
Shoreline
Marysville
Centralia
Federal Way
Chehalis
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.
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 January 29, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$98 | Average$326 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$178 | Average$373 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$189 | Average$374 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$225 | Average$472 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$225 | Average$383 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$236 | Average$358 | FlexibilityNo cancel fee | On-time69% |