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Cheap flights from Seattle to Charleston from C$ 133

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 4/6. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — CHS
29 Apr — 6 May1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Seattle to Charleston

Enter your travel dates to find the best prices.

Cheapest flights from Seattle to Charleston
Explore the most affordable flight options available from Seattle to Charleston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 March 2026.

Wed 22/46:00 a.m.
SEA
-
CHS
1 stop12h 05m
Southwest
Wed 29/47:15 a.m.
CHS
-
SEA
1 stop8h 30m
Southwest
Deal found 25/3C$ 360
Wed 13/57:00 a.m.
SEA
-
CHS
1 stop9h 39m
United Airlines
Fri 15/56:53 p.m.
CHS
-
SEA
1 stop8h 06m
United Airlines
Deal found 25/3C$ 374
Mon 5/1010:40 p.m.
SEA
-
CHS
1 stop8h 47m
United Airlines
Tue 13/1010:23 a.m.
CHS
-
SEA
1 stop8h 12m
United Airlines
Deal found 26/3C$ 378
Wed 30/910:40 a.m.
SEA
-
CHS
1 stop8h 14m
United Airlines
Tue 6/103:19 p.m.
CHS
-
SEA
1 stop10h 10m
United Airlines
Deal found 27/3C$ 385
Fri 2/1011:50 p.m.
SEA
-
CHS
1 stop7h 37m
United Airlines
Tue 6/1010:23 a.m.
CHS
-
SEA
2 stops10h 46m
United Airlines
Deal found 28/3C$ 386
Tue 28/412:08 p.m.
SEA
-
CHS
1 stop8h 51m
United Airlines
Sat 2/56:00 a.m.
CHS
-
SEA
2 stops11h 36m
United Airlines
Deal found 26/3C$ 388
Tue 10/118:30 a.m.
SEA
-
CHS
2 stops10h 24m
United Airlines
Sat 14/114:00 p.m.
CHS
-
SEA
1 stop8h 12m
United Airlines
Deal found 29/3C$ 390
Wed 6/510:52 a.m.
SEA
-
CHS
2 stops10h 07m
United Airlines
Wed 13/56:53 p.m.
CHS
-
SEA
1 stop8h 06m
United Airlines
Deal found 29/3C$ 414
Fri 4/1211:05 p.m.
SEA
-
CHS
1 stop10h 16m
Delta
Mon 7/122:30 p.m.
CHS
-
SEA
1 stop10h 42m
Delta
Deal found 25/3C$ 415

Find flight deals from Seattle to Charleston

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Charleston (CHS). 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 30 March 2026.

Round-trip from

C$ 360

One-way from

C$ 133

Popular in

December

Cheapest in

February

Average price

C$ 483

Good round-trip deal

C$ 440 or less
Southwest
  • Southwest
  • 22/4-29/4
  • 3 total stops
  • 17h 35m total
  • Seattle to Charleston
Search Deals
Southwest
  • Southwest
  • 4/6
  • 1 total stop
  • 9h 30m total
  • Seattle to Charleston
Search Deals
Highest demand for flights based on searches. 0% potential increase in price (C$ 4 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 17 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals
Price to beat on a round-trip flight from Seattle/Tacoma Intl to Charleston.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Charleston 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 629,999 searches. Data last updated 30 March 2026.
Use the filters below to find and compare flights from Seattle to Charleston that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleCharleston

SEA - CHS

SEACHS

Seattle/Tacoma Intl

Wed 22/4

6:30 a.m.-6:35 p.m.

2 stops9h 05m

Charleston

Wed 29/4

1:15 p.m.-10:30 p.m.

2 stops12h 15m

C$ 367

SeattleCharleston

SEA - CHS

SEACHS

Seattle/Tacoma Intl

Sat 25/4

7:00 a.m.-5:13 p.m.

1 stop7h 13m

Charleston

Sat 2/5

6:00 a.m.-2:36 p.m.

2 stops11h 36m

C$ 417

SeattleCharleston

SEA - CHS

SEACHS

Seattle/Tacoma Intl

Sun 7/6

11:52 p.m.-10:08 a.m.

1 stop7h 16m

Charleston

Wed 17/6

11:31 a.m.-7:06 p.m.

1 stop10h 35m

C$ 460

SeattleCharleston

SEA - CHS

SEACHS

Seattle/Tacoma Intl

Sat 25/4

5:45 a.m.-6:05 p.m.

2 stops9h 20m

Charleston

Sat 2/5

8:00 a.m.-6:15 p.m.

2 stops13h 15m

C$ 464

SeattleCharleston

SEA - CHS

SEACHS

Seattle/Tacoma Intl

Mon 27/4

11:59 p.m.-12:25 p.m.

1 stop9h 26m

Charleston

Wed 29/4

5:12 p.m.-11:12 p.m.

1 stop9h 00m

C$ 485

SeattleCharleston

SEA - CHS

SEACHS

Seattle/Tacoma Intl

Wed 27/5

5:04 p.m.-10:08 a.m.

2 stops14h 04m

Charleston

Tue 2/6

6:30 p.m.-11:59 p.m.

1 stop8h 29m

C$ 489

SeattleCharleston

SEA - CHS

SEACHS

Seattle/Tacoma Intl

Tue 14/4

6:00 a.m.-9:05 p.m.

1 stop12h 05m

Charleston

Fri 17/4

2:15 p.m.-11:30 p.m.

2 stops12h 15m

C$ 520

SeattleCharleston

SEA - CHS

SEACHS

Seattle/Tacoma Intl

Thu 28/5

8:00 a.m.-8:50 p.m.

2 stops9h 50m

Charleston

Tue 2/6

2:25 p.m.-12:10 a.m.

2 stops12h 45m

C$ 563

SeattleCharleston

SEA - CHS

SEACHS

Seattle/Tacoma Intl

Thu 28/5

8:00 a.m.-8:50 p.m.

2 stops9h 50m

Charleston

Mon 1/6

5:45 p.m.-12:40 a.m.

2 stops9h 55m

C$ 581
Quickest round-trip

SeattleCharleston

SEA - CHS

SEACHS

Seattle/Tacoma Intl

Wed 27/5

10:00 a.m.-6:26 p.m.

Nonstop5h 26m

Charleston

Tue 2/6

7:26 p.m.-10:29 p.m.

Nonstop6h 03m

C$ 593

Flights are sorted by cheapest round-trip flights first.

Deals found on 25/3

Showing 1-10 of 21 resultsSorted by cheapest first
1
2
3

Best time to book a flight from Seattle to Charleston

Have a flexible travel schedule? Discover the best time to fly to Charleston from Seattle 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 Seattle to Charleston

How far ahead should I book a flight from Seattle to Charleston?

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Charleston. Price data was last updated on 13 March 2026.

Booking 62 days in advance of your planned departure date is, on average, the best time to get cheap flights from Seattle to Charleston. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Seattle to Charleston?

Currently, January is the cheapest month in which you can book a flight from Seattle to Charleston (average of C$ 247). Flying from Seattle to Charleston in June is currently the most expensive (average of C$ 424). 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 SEA to CHS?

Find hourly flight availability from Seattle to Charleston. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 30 March 2026.

When flying from Seattle to Charleston, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How much does it cost to fly round-trip from Seattle to Charleston?

Reviews of airlines servicing Charleston

Get insights into the airlines that provide service to Charleston. 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 Charleston. Reviews last updated 30 March 2026.
See what other customers who have flown with Alaska Airlines from Seattle to Charleston 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
7.9
Good
12,139 reviews
Check prices

Comfort

7.8

Entertainment

7.0

Overall

7.9

Crew

8.5

Food

7.0

Boarding

8.1

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Alaska Airlines
7.9
Good
12,139 reviews
Alaska Airlines
7.9
Good
12,139 reviews
Check prices

Comfort

7.8

Entertainment

7.0

Overall

7.9

Crew

8.5

Food

7.0

Boarding

8.1

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Charleston. 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 Seattle to Charleston?

    If you book a flight from Seattle to Charleston, you will be flying from Seattle/Tacoma Intl to Charleston. Flights to Charleston (CHS) from Seattle/Tacoma Intl (SEA) take 5h 26m for a nonstop flight. There is 1 flight from Seattle/Tacoma Intl to Charleston per day from 1 airline.

  • How popular is this Seattle to Charleston flight route?

    The Seattle/Tacoma Intl to Charleston flight path was viewed by 2 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Seattle to Charleston?

    A quick flight from Seattle to Charleston can take about 7h 13m. Southwest provides one of the quickest options available for as low as C$ 417. Seattle and Charleston are separated by a distance of 3877 km. Both multi-stop and direct flights can be found to your destination and back.

  • What is the cheapest airline to fly from Seattle to Charleston round-trip?

    Cheapflights users have booked flights from Seattle to Charleston round-trip from C$ 339. Users have found that Alaska Airlines is 37% cheaper than the other options available to this destination.

  • What are the cheapest flights from Seattle to Charleston?

    On average you can expect to pay C$ 440 for a flight from Seattle to Charleston. The cheapest flight overall is C$ 440 while the most popular route, (Seattle/Tacoma Intl - Charleston) is currently priced at C$ 781.

  • Can I find deals for flights from Seattle to Charleston that include hotel bookings?

    Yes. In addition to deals on Seattle to Charleston flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Charleston?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Charleston.

  • Can I find deals for business class flights from Seattle to Charleston?

    Yes. Cheapflights offers flight deals from Seattle to Charleston 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 Seattle to Charleston?

    Currently, January is the cheapest month in which you can book a flight from Seattle to Charleston (average of C$ 247). Flying from Seattle to Charleston in June is currently the most expensive (average of C$ 424). 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

Travelling to a place near Charleston?

Book flights to Charleston if you plan to visit one of these locations
Walterboro

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Alternative routes for Seattle to Charleston

See prices for flight routes from nearby airports that may be better suited for you.
Seattle to Charlotte flights

Top airline flying from Seattle to Charleston

Discover the top airline that operate flights from Seattle to Charleston. 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 629,999 searches. Data last updated 30 March 2026.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapestC$ 339AverageC$ 471FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Seattle to Charleston?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Charleston from Seattle today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Seattle to Charleston?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Charleston from Seattle.

Can Cheapflights find flights from Seattle to Charleston with no change fees?

Need flexible booking options for your flight to Charleston from Seattle? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Seattle to Charleston become cheaper?

Of course! You can now track prices for flights from Seattle to Charleston and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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