$109+ 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 9/15. Fares are subject to change and may not be available on all flights or dates of travel.
CHS — SEA
May 29 — Jun 51
Round-trip
1 adult, Economy
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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 Thursday or Friday and return on a Saturday
Cheap flight deals from Charleston to Seattle
Cheapest
Best
Last-minute
One-way
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 April 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 April 29, 2026.
This American Airlines deal was found by Cheapflights users on 4/25. 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 6/25:00 am
CHS
- SEA
1 stop7h 50m
American Airlines
Tue 6/95:10 am
SEA
- CHS
1 stop10h 19m
American Airlines
Deal found 4/25![American Airlines logo]()
$217
This United Airlines deal was found by Cheapflights users on 4/24. 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 10/12:57 pm
CHS
- SEA
1 stop9h 58m
United Airlines
Tue 10/611:04 pm
SEA
- CHS
1 stop7h 58m
United Airlines
Deal found 4/24![United Airlines logo]()
$235
This American Airlines deal was found by Cheapflights users on 4/25. 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 7/77:21 pm
CHS
- SEA
1 stop8h 36m
American Airlines
Tue 7/1411:56 pm
SEA
- CHS
1 stop8h 32m
American Airlines
Deal found 4/25![American Airlines logo]()
$237
This Delta deal was found by Cheapflights users on 4/24. 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 9/305:55 pm
CHS
- SEA
1 stop9h 08m
Delta
Tue 10/66:05 am
SEA
- CHS
1 stop7h 31m
Delta
Deal found 4/24![Delta logo]()
$238
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/1312:26 pm
CHS
- SEA
1 stop11h 57m
American Airlines
Fri 5/2910:50 am
SEA
- CHS
1 stop8h 16m
American Airlines
Deal found 4/26![American Airlines logo]()
$240
This Delta deal was found by Cheapflights users on 4/25. 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 6/161:11 pm
CHS
- SEA
1 stop8h 53m
Delta
Mon 6/295:30 am
SEA
- CHS
1 stop9h 24m
Delta
Deal found 4/25![Delta logo]()
$258
This American Airlines deal was found by Cheapflights users on 4/24. 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 5/87:30 pm
CHS
- SEA
1 stop8h 14m
American Airlines
Mon 5/1110:29 pm
SEA
- CHS
1 stop10h 23m
American Airlines
Deal found 4/24![American Airlines logo]()
$263
This Delta deal was found by Cheapflights users on 4/24. 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.
Fri 10/23:10 pm
CHS
- SEA
1 stop8h 14m
Delta
Tue 10/66:05 am
SEA
- CHS
1 stop7h 31m
Delta
Deal found 4/24![Delta logo]()
$279
This American Airlines deal was found by Cheapflights users on 4/24. 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 5/1212:26 pm
CHS
- SEA
1 stop11h 57m
American Airlines
Wed 5/1311:16 am
SEA
- CHS
1 stop8h 50m
American Airlines
Deal found 4/24![American Airlines logo]()
$283
This American Airlines deal was found by Cheapflights users on 4/25. 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 6/105:00 am
CHS
- SEA
1 stop7h 50m
American Airlines
Tue 6/165:10 am
SEA
- CHS
1 stop10h 19m
American Airlines
Deal found 4/25![American Airlines logo]()
$287
Best flights from Charleston to SeattleDiscover carefully curated flight deals from Charleston to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 29, 2026.
Discover carefully curated flight deals from Charleston to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 29, 2026.
This Delta deal was found by Cheapflights users on 4/25. 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 6/161:11 pm
CHS
- SEA
1 stop8h 53m
Delta
Mon 6/295:30 am
SEA
- CHS
1 stop9h 24m
Delta
Deal found 4/25![Delta logo]()
$258
This Southwest deal was found by Cheapflights users on 4/25. 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 5/28:00 am
CHS
- SEA
1 stop7h 40m
Southwest
Sat 5/98:30 am
SEA
- CHS
1 stop7h 05m
Southwest
Deal found 4/25![Southwest logo]()
$352
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/1310:15 am
CHS
- SEA
2 stops16h 14m
United Airlines
Mon 5/187:00 am
SEA
- CHS
1 stop9h 39m
United Airlines
Deal found 4/28![United Airlines logo]()
$378
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/207:26 pm
CHS
- SEA
Nonstop6h 03m
Alaska Airlines
Thu 5/2810:00 am
SEA
- CHS
Nonstop5h 26m
Alaska Airlines
Deal found 4/28![Alaska Airlines logo]()
$382
This Delta deal was found by Cheapflights users on 4/24. 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 6/305:10 am
CHS
- SEA
1 stop7h 50m
Delta
Thu 7/96:00 am
SEA
- CHS
1 stop6h 53m
Delta
Deal found 4/24![Delta logo]()
$288
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/146:53 pm
CHS
- SEA
1 stop8h 06m
United Airlines
Tue 5/197:36 pm
SEA
- CHS
2 stops13h 41m
United Airlines
Deal found 4/26![United Airlines logo]()
$378
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/125:10 am
CHS
- SEA
1 stop7h 50m
Delta
Wed 6/1710:20 pm
SEA
- CHS
1 stop10h 44m
Delta
Deal found 4/27![Delta logo]()
$349
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 6/115:55 pm
CHS
- SEA
1 stop9h 35m
Southwest
Thu 6/1811:05 pm
SEA
- CHS
2 stops11h 10m
Southwest
Deal found 4/27![Southwest logo]()
$403
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.
Tue 6/306:01 pm
CHS
- SEA
Nonstop5h 58m
Alaska Airlines
Mon 7/208:39 am
SEA
- CHS
Nonstop5h 19m
Alaska Airlines
Deal found 4/26![Alaska Airlines logo]()
$432
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/45:00 pm
CHS
- SEA
1 stop7h 49m
Delta
Fri 7/175:20 am
SEA
- CHS
1 stop9h 36m
Delta
Deal found 4/26![Delta logo]()
$429
Last-minute flights from Charleston to SeattleDiscover last-minute flight deals from Charleston to Seattle. Data last updated April 29, 2026 and is based on user searches.
Discover last-minute flight deals from Charleston to Seattle. Data last updated April 29, 2026 and is based on user searches.
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.
Mon 5/45:57 pm
CHS
- SEA
1 stop8h 56m
Delta
Wed 5/135:30 am
SEA
- CHS
1 stop9h 23m
Delta
Deal found 4/28![Delta logo]()
$381
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.
Mon 5/45:57 pm
CHS
- SEA
1 stop8h 56m
Delta
Tue 5/1211:59 pm
SEA
- CHS
1 stop7h 49m
Delta
Deal found 4/28![Delta logo]()
$441
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.
Mon 5/45:57 pm
CHS
- SEA
1 stop8h 56m
Delta
Mon 5/1110:35 pm
SEA
- CHS
1 stop10h 37m
Delta
Deal found 4/28![Delta logo]()
$470
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.
Tue 5/54:35 pm
CHS
- SEA
1 stop8h 30m
Delta
Tue 5/125:30 am
SEA
- CHS
1 stop9h 23m
Delta
Deal found 4/28![Delta logo]()
$352
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/62:48 pm
CHS
- SEA
2 stops10h 59m
United Airlines
Wed 5/131:07 pm
SEA
- CHS
1 stop7h 52m
United Airlines
Deal found 4/28![United Airlines logo]()
$357
This Southwest deal was found by Cheapflights users on 4/25. 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 5/75:45 pm
CHS
- SEA
2 stops9h 55m
Southwest
Sun 5/105:15 am
SEA
- CHS
1 stop7h 45m
Southwest
Deal found 4/25![Southwest logo]()
$444
This American Airlines deal was found by Cheapflights users on 4/24. 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 5/87:30 pm
CHS
- SEA
1 stop8h 14m
American Airlines
Mon 5/1110:29 pm
SEA
- CHS
1 stop10h 23m
American Airlines
Deal found 4/24![American Airlines logo]()
$263
This United Airlines deal was found by Cheapflights users on 4/24. 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 5/86:53 pm
CHS
- SEA
1 stop8h 06m
United Airlines
Fri 5/1510:53 pm
SEA
- CHS
1 stop10h 24m
United Airlines
Deal found 4/24![United Airlines logo]()
$373
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.
Fri 5/84:44 pm
CHS
- SEA
1 stop9h 14m
American Airlines
Fri 5/1511:55 pm
SEA
- CHS
1 stop9h 19m
American Airlines
Deal found 4/28![American Airlines logo]()
$430
One-way flights from Charleston to SeattleSearch for one-way flight options from Charleston to Seattle. Find affordable one-way fares based on user searches. Data last updated April 29, 2026.
Search for one-way flight options from Charleston to Seattle. Find affordable one-way fares based on user searches. Data last updated April 29, 2026.
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.
Tue 9/154:19 pm
CHS
- SEA
1 stop9h 37m
American Airlines
Deal found 4/28![American Airlines logo]()
$109
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.
Wed 5/135:08 pm
CHS
- SEA
1 stop8h 39m
United Airlines
Deal found 4/27![United Airlines logo]()
$132
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/1510:00 am
CHS
- SEA
2 stops10h 45m
United Airlines
Deal found 4/28![United Airlines logo]()
$137
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.
Sat 7/45:00 pm
CHS
- SEA
1 stop7h 49m
Delta
Deal found 4/28![Delta logo]()
$150
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.
Wed 5/136:32 pm
CHS
- SEA
1 stop9h 04m
American Airlines
Deal found 4/28![American Airlines logo]()
$152
This United Airlines deal was found by Cheapflights users on 4/25. 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 9/172:51 pm
CHS
- SEA
1 stop8h 12m
United Airlines
Deal found 4/25![United Airlines logo]()
$160
This American Airlines deal was found by Cheapflights users on 4/25. 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 8/47:21 pm
CHS
- SEA
1 stop8h 36m
American Airlines
Deal found 4/25![American Airlines logo]()
$164
This Southwest deal was found by Cheapflights users on 4/25. 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 9/91:25 pm
CHS
- SEA
2 stops12h 40m
Southwest
Deal found 4/25![Southwest logo]()
$165
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.
Wed 5/2711:31 am
CHS
- SEA
1 stop10h 34m
United Airlines
Deal found 4/27![United Airlines logo]()
$168
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/47:19 pm
CHS
- SEA
1 stop8h 40m
American Airlines
Deal found 4/27![American Airlines logo]()
$170
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.
Fri 5/156:53 pm
CHS
- SEA
1 stop8h 06m
United Airlines
Deal found 4/27![United Airlines logo]()
$179
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 April 29, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $176 (American Airlines) |
One-way from | $109 (American Airlines) |
Popular in | March |
Cheapest in | February |
Average price | $387 |
Good round-trip deal | $382 or less |
Good one-way deal | $233 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 April 29, 2026.
Use the filters below to find and compare flights from Charleston to Seattle that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
CharlestonSeattle
CHS - SEA
CHSSEA
Charleston
Tue 6/16
1:11 pm-7:04 pm
1 stop8h 53m
Seattle/Tacoma Intl
Mon 6/29
5:30 am-5:54 pm
1 stop9h 24m
$258
CharlestonSeattle
CHS - SEA
CHSSEA
Charleston
Tue 6/30
5:10 am-10:00 am
1 stop7h 50m
Seattle/Tacoma Intl
Thu 7/9
6:00 am-3:53 pm
1 stop6h 53m
$288
CharlestonSeattle
CHS - SEA
CHSSEA
Charleston
Fri 6/12
5:10 am-10:00 am
1 stop7h 50m
Seattle/Tacoma Intl
Wed 6/17
10:20 pm-12:04 pm
1 stop10h 44m
$349
CharlestonSeattle
CHS - SEA
CHSSEA
Charleston
Sat 5/2
8:00 am-12:40 pm
1 stop7h 40m
Seattle/Tacoma Intl
Sat 5/9
8:30 am-6:35 pm
1 stop7h 05m
$352
CharlestonSeattle
CHS - SEA
CHSSEA
Charleston
Wed 5/13
10:15 am-11:29 pm
2 stops16h 14m
Seattle/Tacoma Intl
Mon 5/18
7:00 am-7:39 pm
1 stop9h 39m
$378
CharlestonSeattle
CHS - SEA
CHSSEA
Charleston
Thu 5/14
6:53 pm-11:59 pm
1 stop8h 06m
Seattle/Tacoma Intl
Tue 5/19
7:36 pm-12:17 pm
2 stops13h 41m
$378
CharlestonSeattle
CHS - SEA
CHSSEA
Charleston
Wed 5/20
7:26 pm-10:29 pm
Nonstop6h 03m
Seattle/Tacoma Intl
Thu 5/28
10:00 am-6:26 pm
Nonstop5h 26m
$382
CharlestonSeattle
CHS - SEA
CHSSEA
Charleston
Thu 6/11
5:55 pm-12:30 am
1 stop9h 35m
Seattle/Tacoma Intl
Thu 6/18
11:05 pm-1:15 pm
2 stops11h 10m
$403
CharlestonSeattle
CHS - SEA
CHSSEA
Charleston
Sat 7/4
5:00 pm-9:49 pm
1 stop7h 49m
Seattle/Tacoma Intl
Fri 7/17
5:20 am-5:56 pm
1 stop9h 36m
$429
Quickest round-trip
CharlestonSeattle
CHS - SEA
CHSSEA
Charleston
Tue 6/30
6:01 pm-8:59 pm
Nonstop5h 58m
Seattle/Tacoma Intl
Mon 7/20
8:39 am-4:58 pm
Nonstop5h 19m
$432
Showing 1-10 of 18 resultsSorted by cheapest first
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.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars |
- 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.
CHS-SEA
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
Prices
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How far ahead should I book a flight from Charleston to Seattle?
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 11 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 $257). Flying from Charleston to Seattle in March is currently the most expensive (average of $480). 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 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.
What’s the top layover airport for flights from Charleston to Seattle?
Share of 1-stop round-trip flights from Charleston to Seattle chosen by Cheapflights users in the past 12 months, using the same layover each way.
Chicago (ORD) – chosen by Cheapflights users on 89% of 1-stop itineraries from Charleston to Seattle on Cheapflights.
What’s the cheapest layover airport for flights from Charleston to Seattle?
Average round-trip fare for 1-stop flights from Charleston to Seattle, chosen by Cheapflights users in the past 12 months, with the same layover each way.
Washington, D.C. (IAD) is the most affordable 1-stop option, with an average round-trip price of $515.
What’s the fastest layover option from Charleston to Seattle?
Shortest average travel time for 1-stop one-way flights from Charleston to Seattle, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.
Flights via Washington, D.C. (IAD) have the shortest average one-way travel time for 1-stop routes: 8h 12m.
Which airport typically offers the quickest layover for flights from Charleston to Seattle?
Average layover duration for 1-stop one-way flights from Charleston to Seattle, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Washington, D.C. (IAD) offer the fastest connection on this route, with an average layover time of 1h 08m.
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 April 29, 2026.
See what other customers who have flown with Alaska Airlines,Delta, andHawaiian 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.
Food
7.0
Crew
8.5
Overall
7.9
Boarding
8.1
Entertainment
7.0
Comfort
7.8
Reviews
1 / 20
8.0
ExcellentEugene,Mar 2026
MFR - SEA
Food
7.0
Crew
8.5
Overall
7.9
Boarding
8.1
Entertainment
7.0
Comfort
7.8
Reviews
1 / 20
8.0
ExcellentEugene,Mar 2026
MFR - SEA
Food
7.0
Crew
8.5
Overall
7.9
Boarding
8.1
Entertainment
7.0
Comfort
7.8
Reviews
1 / 20
8.0
ExcellentEugene,Mar 2026
MFR - SEA
Food
7.0
Crew
8.5
Overall
7.9
Boarding
8.1
Entertainment
7.0
Comfort
7.8
Reviews
1 / 20
8.0
ExcellentEugene,Mar 2026
MFR - SEA
Food
7.0
Crew
8.5
Overall
7.9
Boarding
8.1
Entertainment
7.0
Comfort
7.8
Reviews
1 / 20
8.0
ExcellentEugene,Mar 2026
MFR - SEA
Food
7.0
Crew
8.5
Overall
7.9
Boarding
8.1
Entertainment
7.0
Comfort
7.8
Reviews
1 / 20
8.0
ExcellentEugene,Mar 2026
MFR - 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 locationsSeaTac
Tacoma
Ocean Shores
Olympia
Lynnwood
Lacey
Edmonds
Leavenworth
Snoqualmie
Tumwater
Tukwila
Puyallup
Kent
Renton
Kirkland
Ellensburg
Fife
Lakewood
Issaquah
Shoreline
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Charleston and Seattle flights
Browse other Charleston and Seattle flight options. Last updated on April 29, 2026.
Other flights from Charleston
Browse through other flights departing from Charleston. Flights are based on user searches made on Cheapflights and were last updated on April 29, 2026.
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Check out other popular destinations found by fellow travelers in 2026
Other flights to Seattle
Explore flights to Seattle departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on April 29, 2026.
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 29, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$98 | Average$315 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$149 | Average$378 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$178 | Average$352 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$217 | Average$377 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$225 | Average$467 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$247 | Average$372 | FlexibilityNo cancel fee | On-time69% |