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Cheap flights from Seattle to Charleston from C$ 185

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 23/9. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — CHS
16 Oct — 23 Oct1
1 adult
1 adult, Economy

Cheap 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 16 September 2025.

Round-trip from

C$ 314

One-way from

C$ 185

Popular in

December

Cheapest in

January

Average price

C$ 452
United Airlines
  • United Airlines
  • 2/1-12/1
  • 2 total stops
  • 15h 50m total
  • Seattle to Charleston
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United Airlines
  • United Airlines
  • 23/9
  • 1 total stop
  • 7h 46m total
  • Seattle to Charleston
Search Deals
Highest demand for flights based on searches. 4% potential increase in price (C$ 34 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (C$ 42 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Seattle to Charleston

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 16 September 2025.

Wed 29/106:20 a.m.SEA - CHS
1 stop8h 13mUnited Airlines
Tue 4/1110:00 a.m.CHS - SEA
2 stops11h 00mUnited Airlines
Deal found 15/9C$ 320
Tue 23/99:10 p.m.SEA - CHS
1 stop9h 45mSouthwest
Tue 30/97:10 a.m.CHS - SEA
1 stop9h 30mSouthwest
Deal found 16/9C$ 330
Sat 4/105:00 a.m.SEA - CHS
2 stops12h 08mUnited Airlines
Wed 8/106:02 a.m.CHS - SEA
1 stop8h 29mUnited Airlines
Deal found 14/9C$ 348
Wed 3/1210:07 a.m.SEA - CHS
Nonstop5h 17mHawaiian Airlines
Fri 12/127:24 p.m.CHS - SEA
Nonstop6h 06mHawaiian Airlines
Deal found 15/9C$ 355
Wed 12/115:40 a.m.SEA - CHS
2 stops10h 00mSouthwest
Tue 18/116:00 a.m.CHS - SEA
2 stops10h 25mSouthwest
Deal found 16/9C$ 365
Sat 1/115:00 a.m.SEA - CHS
1 stop6h 50mSouthwest
Tue 11/117:00 a.m.CHS - SEA
2 stops17h 50mSouthwest
Deal found 15/9C$ 366
Wed 12/117:13 p.m.SEA - CHS
2 stops11h 55mUnited Airlines
Tue 18/116:15 a.m.CHS - SEA
1 stop8h 13mUnited Airlines
Deal found 16/9C$ 370
Mon 6/1011:40 p.m.SEA - CHS
1 stop7h 55mUnited Airlines
Sat 11/1011:31 a.m.CHS - SEA
2 stops12h 53mUnited Airlines
Deal found 15/9C$ 374
Tue 30/97:37 p.m.SEA - CHS
2 stops11h 58mUnited Airlines
Fri 3/106:02 a.m.CHS - SEA
1 stop8h 29mUnited Airlines
Deal found 16/9C$ 376
Thu 4/1210:07 a.m.SEA - CHS
Nonstop5h 17mHawaiian Airlines
Mon 8/127:24 p.m.CHS - SEA
Nonstop6h 06mHawaiian Airlines
Deal found 15/9C$ 383

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 16 September 2025.
Use the filters below to find and compare flights from Seattle to Charleston that are best for you.

Fly from

Seattle

Fly to

Charleston

Route

Depart

Return

Price

SeattleCharleston

SEA - CHS

SEACHS

Seattle/Tacoma Intl

Wed 29/10

7:28 p.m.-10:08 a.m.

2 stops11h 40m

Charleston

Wed 5/11

4:11 p.m.-9:13 p.m.

1 stop8h 02m

C$ 320

SeattleCharleston

SEA - CHS

SEACHS

Seattle/Tacoma Intl

Wed 29/10

6:20 a.m.-5:33 p.m.

1 stop8h 13m

Charleston

Tue 4/11

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

2 stops11h 00m

C$ 320

SeattleCharleston

SEA - CHS

SEACHS

Seattle/Tacoma Intl

Sat 4/10

5:00 a.m.-8:08 p.m.

2 stops12h 08m

Charleston

Wed 8/10

6:02 a.m.-11:31 a.m.

1 stop8h 29m

C$ 348

SeattleCharleston

SEA - CHS

SEACHS

Seattle/Tacoma Intl

Wed 12/11

5:40 a.m.-6:40 p.m.

2 stops10h 00m

Charleston

Tue 18/11

6:00 a.m.-1:25 p.m.

2 stops10h 25m

C$ 365

SeattleCharleston

SEA - CHS

SEACHS

Seattle/Tacoma Intl

Sat 1/11

5:00 a.m.-2:50 p.m.

1 stop6h 50m

Charleston

Tue 11/11

7:00 a.m.-9:50 p.m.

2 stops17h 50m

C$ 366

SeattleCharleston

SEA - CHS

SEACHS

Seattle/Tacoma Intl

Tue 3/3

9:15 a.m.-5:31 p.m.

Nonstop5h 16m

Charleston

Wed 4/3

6:45 p.m.-9:42 p.m.

Nonstop5h 57m

C$ 383

SeattleCharleston

SEA - CHS

SEACHS

Seattle/Tacoma Intl

Tue 3/3

9:15 a.m.-5:31 p.m.

Nonstop5h 16m

Charleston

Wed 4/3

6:45 p.m.-9:42 p.m.

Nonstop5h 57m

C$ 383

SeattleCharleston

SEA - CHS

SEACHS

Seattle/Tacoma Intl

Mon 3/11

9:40 a.m.-5:54 p.m.

Nonstop5h 14m

Charleston

Fri 14/11

6:59 p.m.-9:59 p.m.

Nonstop6h 00m

C$ 383

SeattleCharleston

SEA - CHS

SEACHS

Seattle/Tacoma Intl

Wed 22/10

9:56 a.m.-6:17 p.m.

Nonstop5h 21m

Charleston

Sun 26/10

6:59 p.m.-9:59 p.m.

Nonstop6h 00m

C$ 384

SeattleCharleston

SEA - CHS

SEACHS

Seattle/Tacoma Intl

Tue 7/10

9:56 a.m.-6:17 p.m.

Nonstop5h 21m

Charleston

Sat 11/10

7:23 p.m.-10:15 p.m.

Nonstop5h 52m

C$ 384

Flights are sorted by cheapest round-trip flights first.

Deals found on 15/9

Showing 1-10 of 21 results
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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 12 September 2025.

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, September is the cheapest month in which you can book a flight from Seattle to Charleston (average of C$ 407). Flying from Seattle to Charleston in March is currently the most expensive (average of C$ 507). 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 16 September 2025.

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.

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 16 September 2025.
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
8.0
Very good
10,000 reviews
Check prices

Comfort

7.8

Overall

8.0

Boarding

8.1

Entertainment

7.1

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Comfort

7.8

Overall

8.0

Boarding

8.1

Entertainment

7.1

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

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 21m for a nonstop flight. There are 2 flights 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 8 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 5h 16m. United Airlines provides one of the quickest options available for as low as C$ 383. 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$ 271. Users have found that Alaska Airlines is 51% cheaper than the other options available to this destination.

  • 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, September is the cheapest month in which you can book a flight from Seattle to Charleston (average of C$ 407). Flying from Seattle to Charleston in March is currently the most expensive (average of C$ 507). 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

Browse thousands of different options on Cheapflights for your next trip

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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 16 September 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapestC$ 271AverageC$ 412FlexibilityNo 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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