What is the cheapest airline that flies from Charleston to Seattle/Tacoma Intl?

Delta, United Airlines, and Southwest are the most popular carriers operating from Charleston to Seattle/Tacoma Intl

Which airport is the most popular layover for flights between Charleston and Seattle?

Charlotte (CLT) was the most common stop: 56% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport has the shortest travel time from Charleston to Seattle?

Flights connecting via Atlanta (ATL) have the shortest average one-way travel time: 8h 23m.

What airlines fly to Seattle?

American Airlines, Alaska Airlines and Delta are the top three most popular airlines that fly to Seattle from Charleston according to our data. American Airlines is the first choice among our users, with 39% of people opting to fly with this airline when traveling to Seattle. Keep in mind that there are 6 different airlines that fly to Seattle on a routine basis, so you have a few additional options to choose from.

Which layover airport offers the lowest fares from Charleston to Seattle?

Flights via Dallas (DFW) offer the lowest average round-trip price of $238.

Which layover airport has the shortest connection time from Charleston to Seattle?

Chicago (ORD) has the shortest average layover time for this route: 1h 06m.

How many flights depart from Charleston to Seattle on average per week?

As of June 2026, 3 flights take off from Charleston and land in Seattle each week. The most common flight departure day for this route is Mon, with 33% of weekly flights taking off on this day.

When did momondo last update prices for flights from Charleston Airport to Seattle/Tacoma Intl Airport?

Prices for flights from Charleston Airport to Seattle/Tacoma Intl Airport are refreshed on a daily basis.

How many operators does momondo search for flights from Charleston Airport to Seattle/Tacoma Intl Airport?

As of June 2026, there are 6 operators available to choose from for flights from Charleston Airport to Seattle/Tacoma Intl Airport.

How old do you have to be to fly from Charleston Airport to Seattle/Tacoma Intl Airport?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Charleston Airport to Seattle/Tacoma Intl Airport.

What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

The required travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$119 Cheap Flights from Charleston to Seattle in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Charleston to Seattle

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

11:45 am - 7:23 pm

CHS

SEA

10h 38m

1 stop

6:05 am - 4:36 pm

SEA

CHS

7h 31m

1 stop

$318Delta

Sun, Nov 22 - Tue, Dec 1

7:53 pm - 12:57 am

CHS

SEA

8h 04m

1 stop

9:42 pm - 9:39 am

SEA

CHS

8h 57m

1 stop

$327American Airlines

Tue, Aug 4 - Thu, Aug 13

11:45 am - 7:23 pm

CHS

SEA

10h 38m

1 stop

6:05 am - 4:36 pm

SEA

CHS

7h 31m

1 stop

$328Delta

Sat, Nov 21 - Wed, Dec 2

2:00 pm - 10:20 pm

CHS

SEA

11h 20m

2 stops

7:30 pm - 1:15 pm

SEA

CHS

14h 45m

2 stops

$329Southwest

Sat, Jul 4 - Wed, Jul 15

1:20 pm - 9:30 pm

CHS

SEA

11h 10m

2 stops

11:05 pm - 12:35 pm

SEA

CHS

10h 30m

2 stops

$333Southwest

Sat, Sep 5 - Mon, Sep 14

11:30 am - 6:20 pm

CHS

SEA

9h 50m

2 stops

6:25 am - 7:45 pm

SEA

CHS

10h 20m

2 stops

$336Southwest

Thu, Sep 24 - Tue, Sep 29

2:00 pm - 10:20 pm

CHS

SEA

11h 20m

2 stops

5:15 am - 7:35 pm

SEA

CHS

11h 20m

1 stop

$338Southwest

Sat, Jul 4 - Wed, Jul 15

7:36 pm - 12:50 am

CHS

SEA

8h 14m

1 stop

11:16 pm - 12:31 pm

SEA

CHS

10h 15m

1 stop

$339American Airlines

Thu, Sep 3 - Tue, Sep 8

8:00 am - 7:03 pm

CHS

SEA

14h 03m

2 stops

11:14 pm - 10:02 am

SEA

CHS

7h 48m

1 stop

$342United Airlines

Wed, Oct 21 - Wed, Oct 21

3:32 pm - 10:26 pm

CHS

SEA

9h 54m

1 stop

10:00 pm - 9:39 am

SEA

CHS

8h 39m

1 stop

$343American Airlines

Wed, Aug 12 - Mon, Aug 17

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United Airlines flights from Charleston to Seattle

Our best United Airlines deals on Charleston to Seattle flight tickets

United Airlines

Oct 21

CHS8:00 amCharleston

14h 03m

2 stops

SEA7:03 pmSeattle/Tacoma Intl

Oct 21

SEA11:14 pmSeattle/Tacoma Intl

7h 48m

1 stop

CHS10:02 amCharleston

$342

United Airlines

Aug 28

CHS4:28 pmCharleston

9h 15m

1 stop

SEA10:43 pmSeattle/Tacoma Intl

Sep 5

SEA11:00 pmSeattle/Tacoma Intl

8h 36m

1 stop

CHS10:36 amCharleston

$347

United Airlines

Nov 5

CHS9:54 amCharleston

8h 37m

1 stop

SEA3:31 pmSeattle/Tacoma Intl

Nov 8

SEA6:51 pmSeattle/Tacoma Intl

11h 03m

2 stops

CHS8:54 amCharleston

$348

Delta flights from Charleston to Seattle

Our best Delta deals on Charleston to Seattle flight tickets

Delta

Nov 22

CHS11:45 amCharleston

10h 38m

1 stop

SEA7:23 pmSeattle/Tacoma Intl

Dec 1

SEA6:05 amSeattle/Tacoma Intl

7h 31m

1 stop

CHS4:36 pmCharleston

$318

Delta

Nov 21

CHS11:45 amCharleston

10h 38m

1 stop

SEA7:23 pmSeattle/Tacoma Intl

Dec 2

SEA6:05 amSeattle/Tacoma Intl

7h 31m

1 stop

CHS4:36 pmCharleston

$328

Delta

Jun 27

CHS7:05 amCharleston

8h 15m

1 stop

SEA12:20 pmSeattle/Tacoma Intl

Jul 7

SEA8:35 amSeattle/Tacoma Intl

9h 14m

1 stop

CHS8:49 pmCharleston

$334

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

CharlestonSeattle

CHS - SEA

CHSSEA

Charleston

Sun 11/22

11:45 am-7:23 pm

1 stop10h 38m

Seattle/Tacoma Intl

Tue 12/1

6:05 am-4:36 pm

1 stop7h 31m

$318

Quickest round-trip

CharlestonSeattle

CHS - SEA

CHSSEA

Charleston

Tue 8/4

7:53 pm-12:57 am

1 stop8h 04m

Seattle/Tacoma Intl

Thu 8/13

9:42 pm-9:39 am

1 stop8h 57m

$327

CharlestonSeattle

CHS - SEA

CHSSEA

Charleston

Sat 11/21

11:45 am-7:23 pm

1 stop10h 38m

Seattle/Tacoma Intl

Wed 12/2

6:05 am-4:36 pm

1 stop7h 31m

$328

CharlestonSeattle

CHS - SEA

CHSSEA

Charleston

Sat 7/4

2:00 pm-10:20 pm

2 stops11h 20m

Seattle/Tacoma Intl

Wed 7/15

7:30 pm-1:15 pm

2 stops14h 45m

$329

CharlestonSeattle

CHS - SEA

CHSSEA

Charleston

Sat 9/5

1:20 pm-9:30 pm

2 stops11h 10m

Seattle/Tacoma Intl

Mon 9/14

11:05 pm-12:35 pm

2 stops10h 30m

$333

CharlestonSeattle

CHS - SEA

CHSSEA

Charleston

Thu 9/24

11:30 am-6:20 pm

2 stops9h 50m

Seattle/Tacoma Intl

Tue 9/29

6:25 am-7:45 pm

2 stops10h 20m

$336

CharlestonSeattle

CHS - SEA

CHSSEA

Charleston

Sat 7/4

2:00 pm-10:20 pm

2 stops11h 20m

Seattle/Tacoma Intl

Wed 7/15

5:15 am-7:35 pm

1 stop11h 20m

$338

CharlestonSeattle

CHS - SEA

CHSSEA

Charleston

Thu 9/3

7:36 pm-12:50 am

1 stop8h 14m

Seattle/Tacoma Intl

Tue 9/8

11:16 pm-12:31 pm

1 stop10h 15m

$339

CharlestonSeattle

CHS - SEA

CHSSEA

Charleston

Wed 10/21

8:00 am-7:03 pm

2 stops14h 03m

Seattle/Tacoma Intl

Wed 10/21

11:14 pm-10:02 am

1 stop7h 48m

$342

CharlestonSeattle

CHS - SEA

CHSSEA

Charleston

Wed 8/12

3:32 pm-10:26 pm

1 stop9h 54m

Seattle/Tacoma Intl

Mon 8/17

10:00 pm-9:39 am

1 stop8h 39m

$343

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Charleston to Seattle

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Layovers

Other information

What is the typical price of a round-trip flight between Charleston and Seattle?

What is the cheapest month to fly to Seattle?

In general, February is the cheapest month to fly from Charleston to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $257. If you don’t want to visit Seattle in February, then you should wait until October to fly from Charleston, when ticket prices are also cheap, with an average price of $277.

What is the cheapest day to depart on your flight to Seattle?

On average, the least expensive day to fly to Seattle from Charleston is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $394. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Monday is the most expensive day to depart from Charleston because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $706.

What is the cheapest time of day to depart on your flight to Seattle?

Flying to Seattle from Charleston in the evening is the least expensive time of day to depart. momondo users have found prices as low as $425 when looking at flights departing in the evening. Flights to Seattle are more costly in the morning, with an average ticket price of $1,594. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest Charleston to Seattle/Tacoma Intl flight route?

Fly from Charleston to Seattle/Tacoma Intl for the best Charleston - Seattle/Tacoma Intl flight prices

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

You are more likely to see cheaper flights to Seattle from Charleston when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $364 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Charleston for as low as $314 on momondo.

What cabin class options are available on Charleston to Seattle flights?

There are 4 cabin classes available to choose from on Charleston to Seattle flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Charleston to Seattle flights?

No. A direct flight is the cheapest option for a flight between Charleston to Seattle.

How have Charleston to Seattle flight prices changed over time?

As of June 2026, prices for Charleston to Seattle flights are approximately 23% cheaper when compared to flights at the same time last year.

When to book flights from Charleston to Seattle

Are you open to changing your travel dates? Check out the ideal times to fly from Charleston to Seattle according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Charleston to Seattle (CHS to SEA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Charleston to Seattle

Best Price Found	$248
Fastest flight time	5h 51m
Direct flights	Every day
Airports in Seattle	1 airport

The best one-way flight to Seattle from Charleston in the past 72 hours is $248. The best round-trip flight deal from Charleston to Seattle found on momondo in the last 72 hours is $431.

The fastest flight from Charleston to Seattle takes 5h 51m

Direct flights go from Charleston to Seattle every day.

There is 1 airport in Seattle. From Charleston there are direct flights to Seattle/Tacoma Intl (SEA).

Search flight deals

Frequently asked questions about flying from Charleston to Seattle

How far is Charleston to Seattle/Tacoma Intl by plane?
Seattle/Tacoma Intl is 2422.1 mi away from Charleston. 5h 51m is a normal flight duration for this route.
When did momondo last update prices for flights from Charleston Airport to Seattle/Tacoma Intl Airport?
Prices for flights from Charleston Airport to Seattle/Tacoma Intl Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Charleston Airport to Seattle/Tacoma Intl Airport?
As of June 2026, there are 6 operators available to choose from for flights from Charleston Airport to Seattle/Tacoma Intl Airport.
How old do you have to be to fly from Charleston Airport to Seattle/Tacoma Intl Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Charleston Airport to Seattle/Tacoma Intl Airport.
What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?
The required travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from Charleston to Seattle?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Charleston to Seattle is Boeing 737 MAX 9 (58.97% of total bookings). The next most popular plane models are Boeing 737-900 Passenger/BBJ3 (winglets) (14.10%), Boeing 737 MAX 8 (7.69%), and Boeing 737-800 Passenger/BBJ2 (winglets) (6.41%).
What is the most popular airline from Charleston to Seattle?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Charleston to Seattle is Alaska Airlines (48% of total bookings). The next most popular airlines are American Airlines (24%), United Airlines (13%), and Delta (6%).

Best airlines flying from Charleston to Seattle

Compare and see reviews for airlines that fly from Charleston to Seattle with momondo

Airline	Rating	Free Cancellation	Price
Hawaiian Airlines	PriceFrom $138	Free Cancellation	Rating 7.8 2,826 reviews	Search Hawaiian Airlines flights
American Airlines	PriceFrom $178	Free Cancellation	Rating 7.1 11,741 reviews	Search American Airlines flights
Delta	PriceFrom $196	Free Cancellation	Rating 7.8 8,421 reviews	Search Delta flights
Alaska Airlines	PriceFrom $217	Free Cancellation	Rating 7.9 12,563 reviews	Search Alaska Airlines flights
Southwest	PriceFrom $225	Free Cancellation	Rating 7.9 4,243 reviews	Search Southwest flights
United Airlines	PriceFrom $236	Free Cancellation	Rating 7.4 9,874 reviews	Search United Airlines flights

Alaska Airlines Flights From Charleston to Seattle
The lowest priced Alaska Airlines flight from Charleston to Seattle from the last 72 hours was $217. Generally, Alaska Airlines has 1 flight on this route every week with an average price of $390. Alaska Airlines is rated 7.9/10 by our users.
United Airlines Flights From Charleston to Seattle
Across 9,874 United Airlines reviews on momondo, the average score is 7.4/10. United Airlines flies from Charleston to Seattle about 2 times each week, with ticket deals ranging from $236 to $367. Price data is based on momondo searches in the last 72 hours.

Tacoma

Leavenworth

SeaTac

Ocean Shores

Renton

Olympia

Lynnwood

Redmond

Kent

Lakewood

Puyallup

Tukwila

Federal Way

Fife

Cle Elum

Marysville

Centralia

Kirkland

Shoreline

Westport

Why use momondo?

Why should I use momondo to find a flight deal from Charleston to Seattle?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Charleston to Seattle. momondo saves you time and could save you money on your trip.

Can I find flights from Charleston to Seattle with flexible booking policies on momondo?

Flights from Charleston to Seattle with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Charleston to Seattle?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Charleston to Seattle.

I’m not ready to book a flight from Charleston to Seattle right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Seattle, momondo offers a useful price alert feature which will track prices for flights to Seattle from Charleston and alert you when they change.

An easier way to manage your Seattle trip

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Airports servicing Washington

Walla Walla Airport

Bellingham Airport

Wenatchee Pangborn Field Airport

Eastsound Orcas Island Airport

Friday Harbor SPB Airport

Spokane Airport

Kenmore Air Harbor Airport

Pasco Tri Cities Airport

Pullman Moscow Regional Airport

Rosario SPB Airport

Yakima Air Terminal Airport

Cheap flights from Charleston to Seattle from $119

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Charleston to Seattle departing on 7/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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United Airlines flights from Charleston to Seattle

Our best United Airlines deals on Charleston to Seattle flight tickets

Delta flights from Charleston to Seattle

Our best Delta deals on Charleston to Seattle flight tickets

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See travel insights to Seattle from

How to get the cheapest flight ticket from Charleston to Seattle

What is the typical price of a round-trip flight between Charleston and Seattle?

What is the cheapest month to fly to Seattle?

What is the cheapest day to depart on your flight to Seattle?

What is the cheapest time of day to depart on your flight to Seattle?

What is the cheapest Charleston to Seattle/Tacoma Intl flight route?

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

What cabin class options are available on Charleston to Seattle flights?

Can stopping save me money on Charleston to Seattle flights?

How have Charleston to Seattle flight prices changed over time?

What is the cheapest airline that flies from Charleston to Seattle/Tacoma Intl?

What airlines fly to Seattle?

Which airport is the most popular layover for flights between Charleston and Seattle?

Which layover airport offers the lowest fares from Charleston to Seattle?

Which layover airport has the shortest travel time from Charleston to Seattle?

Which layover airport has the shortest connection time from Charleston to Seattle?

How many flights depart from Charleston to Seattle on average per week?

When to book flights from Charleston to Seattle

Cheap Charleston to Seattle (CHS to SEA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Charleston to Seattle

Best Price Found

Fastest flight time

Direct flights

Airports in Seattle

Frequently asked questions about flying from Charleston to Seattle

Best airlines flying from Charleston to Seattle

Compare and see reviews for airlines that fly from Charleston to Seattle with momondo

Alaska Airlines Flights From Charleston to Seattle

United Airlines Flights From Charleston to Seattle

Traveling to a place near Seattle?

Why use momondo?

An easier way to manage your Seattle trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Airports servicing Washington

Fly your favorite airline to Seattle

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

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List of cabin classes available on flights landing in Seattle. Availability may vary depending on flight origin and airline.

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Popular flights according to clicks in the last 7 days on momondo

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