Find flights
Deals
When to book
Airlines
FAQs

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 18/11. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — CHS
4 ago. — 11 ago.1
1 adult

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 30 julio 2025.

Round-trip from

C$ 327

One-way from

C$ 185

Popular in

December

Cheapest in

January

Average price

C$ 611
Hawaiian Airlines
  • Hawaiian Airlines
  • 6/9-10/9
  • Nonstop
  • 11h 09m total
  • Seattle to Charleston
Search Deals
United Airlines
  • United Airlines
  • 18/11
  • 2 total stops
  • 11h 18m total
  • Seattle to Charleston
Search Deals
Highest demand for flights based on searches. 1% potential increase in price (C$ 13 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (C$ 34 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2025
Search Deals

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 30 julio 2025.

sáb. 6/98:58 a.m.SEA - CHS
Nonstop5h 19mHawaiian Airlines
mié. 10/96:17 p.m.CHS - SEA
Nonstop5h 50mHawaiian Airlines
Deal found 30/7C$ 327
sáb. 6/97:34 p.m.SEA - CHS
2 stops11h 33mUnited Airlines
mié. 10/95:16 p.m.CHS - SEA
1 stop8h 36mUnited Airlines
Deal found 30/7C$ 361
vie. 5/98:58 a.m.SEA - CHS
Nonstop5h 19mAlaska Airlines
dom. 7/96:17 p.m.CHS - SEA
Nonstop5h 50mAlaska Airlines
Deal found 30/7C$ 382
jue. 28/86:15 a.m.SEA - CHS
1 stop13h 25mSouthwest
jue. 4/94:25 p.m.CHS - SEA
1 stop10h 10mSouthwest
Deal found 29/7C$ 403
mar. 9/96:00 a.m.SEA - CHS
1 stop8h 58mDelta
dom. 14/95:10 a.m.CHS - SEA
1 stop7h 59mDelta
Deal found 29/7C$ 423

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 julio 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

sáb. 6/9

8:58 a.m.-5:17 p.m.

Nonstop5h 19m

Charleston

mié. 10/9

6:17 p.m.-9:07 p.m.

Nonstop5h 50m

C$ 327

SeattleCharleston

SEA - CHS

SEACHS

Seattle/Tacoma Intl

mar. 26/8

8:59 a.m.-5:17 p.m.

Nonstop5h 18m

Charleston

mar. 2/9

6:17 p.m.-9:07 p.m.

Nonstop5h 50m

C$ 354

SeattleCharleston

SEA - CHS

SEACHS

Seattle/Tacoma Intl

sáb. 6/9

7:34 p.m.-10:07 a.m.

2 stops11h 33m

Charleston

mié. 10/9

5:16 p.m.-10:52 p.m.

1 stop8h 36m

C$ 361

SeattleCharleston

SEA - CHS

SEACHS

Seattle/Tacoma Intl

jue. 28/8

6:15 a.m.-10:40 p.m.

1 stop13h 25m

Charleston

jue. 4/9

4:25 p.m.-11:35 p.m.

1 stop10h 10m

C$ 403

SeattleCharleston

SEA - CHS

SEACHS

Seattle/Tacoma Intl

mar. 9/9

6:00 a.m.-5:58 p.m.

1 stop8h 58m

Charleston

dom. 14/9

5:10 a.m.-10:09 a.m.

1 stop7h 59m

C$ 423

SeattleCharleston

SEA - CHS

SEACHS

Seattle/Tacoma Intl

mar. 18/11

5:05 a.m.-7:23 p.m.

2 stops11h 18m

C$ 185

SeattleCharleston

SEA - CHS

SEACHS

Seattle/Tacoma Intl

mié. 22/10

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

Nonstop5h 21m

C$ 192

SeattleCharleston

SEA - CHS

SEACHS

Seattle/Tacoma Intl

lun. 29/9

5:00 a.m.-3:35 p.m.

1 stop7h 35m

C$ 199

SeattleCharleston

SEA - CHS

SEACHS

Seattle/Tacoma Intl

jue. 14/8

8:47 a.m.-5:00 p.m.

Nonstop5h 13m

C$ 302

SeattleCharleston

SEA - CHS

SEACHS

Seattle/Tacoma Intl

jue. 7/8

9:30 p.m.-9:37 a.m.

1 stop9h 07m

C$ 399

Flights are sorted by cheapest round-trip flights first.

Deals found on 29/7

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 25 July 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$ 503). 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 julio 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 30 julio 2025.
See what other customers who have flown with Alaska Airlines,Southwest, andDelta 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

Entertainment

7.1

Boarding

8.1

Overall

8.0

Food

7.1

Comfort

7.8

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

Entertainment

7.1

Boarding

8.1

Overall

8.0

Food

7.1

Comfort

7.8

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.
Southwest
8.0
Very good
4,241 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Entertainment

7.1

Boarding

8.1

Overall

8.0

Food

7.1

Comfort

7.8

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.
Delta
8.0
Very good
7,980 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Entertainment

7.1

Boarding

8.1

Overall

8.0

Food

7.1

Comfort

7.8

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.
Hawaiian Airlines
7.8
Good
2,611 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Entertainment

7.1

Boarding

8.1

Overall

8.0

Food

7.1

Comfort

7.8

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.
United Airlines
7.4
Good
8,896 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Entertainment

7.1

Boarding

8.1

Overall

8.0

Food

7.1

Comfort

7.8

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 12m 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 8 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • What are the cheapest airlines flying from Seattle to Charleston round-trip?

    Cheapflights users have booked flights from Seattle to Charleston round-trip from C$ 327. Other airlines that can offer you cheap pricing are United Airlines, from C$ 361, and Alaska Airlines, from C$ 382. Users have found that Hawaiian Airlines is 41% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from Seattle to Charleston one-way?

    The cheapest airlines for a one-way flight from Seattle to Charleston are United Airlines (C$ 185), Hawaiian Airlines (C$ 192), and Southwest (C$ 199).

  • 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$ 503). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 julio 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapestC$ 271AverageC$ 468FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

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.

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.