CHS - SEA

$90 Find Cheap Flights from Charleston to Seattle

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Charleston to Seattle departing on 10/24. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Seattle

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Charleston to Seattle, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Charleston to Seattle, as well as popular online travel agencies
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Flight Deals

Cheap Flights from Charleston to Seattle (CHS-SEA)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Charleston to Seattle that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Charleston to Seattle

Sat, Oct 18 - Mon, Oct 27
American Airlines Logo
4:30 pm - 10:56 pmCHS-SEA
9h 26m1 stop
American Airlines Logo
10:01 pm - 9:31 amSEA-CHS
8h 30m1 stop
$179American Airlines
Find Deal
Wed, Oct 15 - Tue, Oct 21
American Airlines Logo
7:45 pm - 12:27 amCHS-SEA
7h 42m1 stop
American Airlines Logo
11:49 pm - 9:31 amSEA-CHS
6h 42m1 stop
$184American Airlines
Find Deal
Fri, Dec 5 - Wed, Dec 10
Delta Logo
6:31 pm - 11:59 pmCHS-SEA
8h 28m1 stop
Delta Logo
7:15 am - 7:29 pmSEA-CHS
9h 14m1 stop
$197Delta
Find Deal
Wed, Oct 15 - Tue, Oct 21
Hawaiian Airlines Logo
7:23 pm - 10:15 pmCHS-SEA
5h 52mnonstop
Hawaiian Airlines Logo
9:56 am - 6:17 pmSEA-CHS
5h 21mnonstop
$234Hawaiian Airlines
Find Deal
Wed, Oct 15 - Tue, Oct 21
Hawaiian Airlines Logo
7:23 pm - 10:15 pmCHS-SEA
5h 52mnonstop
Hawaiian Airlines Logo
9:56 am - 6:17 pmSEA-CHS
5h 21mnonstop
$235Hawaiian Airlines
Find Deal
Sat, Dec 6 - Wed, Dec 10
Alaska Airlines Logo
7:24 pm - 10:30 pmCHS-SEA
6h 06mnonstop
Alaska Airlines Logo
10:07 am - 6:24 pmSEA-CHS
5h 17mnonstop
$237Alaska Airlines
Find Deal
Sat, Oct 4 - Tue, Oct 7
United Airlines Logo
4:35 pm - 9:24 pmCHS-SEA
7h 49m1 stop
United Airlines Logo
6:35 am - 10:15 pmSEA-CHS
12h 40m2 stops
$252United Airlines
Find Deal
Wed, Nov 5 - Mon, Nov 10
Alaska Airlines Logo
6:59 pm - 9:59 pmCHS-SEA
6h 00mnonstop
Alaska Airlines Logo
9:40 am - 5:54 pmSEA-CHS
5h 14mnonstop
$255Alaska Airlines
Find Deal
Thu, Jan 15 - Mon, Jan 19
Delta Logo
12:45 pm - 10:16 pmCHS-SEA
12h 31m1 stop
Delta Logo
11:05 pm - 10:42 amSEA-CHS
8h 37m1 stop
$267Delta
Find Deal
Sat, Oct 4 - Tue, Oct 7
United Airlines Logo
6:02 am - 3:32 pmCHS-SEA
12h 30m2 stops
United Airlines Logo
5:00 am - 3:14 pmSEA-CHS
7h 14m1 stop
$272United Airlines
Find Deal

Everything you should know

Our travelers' advice
AI-generated summary based on content written by travel experts
For quick security, arrive 90 minutes early at CHS.
Use the Link light rail for a cost-effective trip.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
American Airlines
Cheapest • from $179 (round-trip)
Alaska Airlines
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
4 weeks
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 31% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
October
Cheapest • 24% price drop
July
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
$179
Overall average: $298
American Airlines
Sat 10/18Mon 10/27
CHS - SEA • 1 stop
Cheapest non-stop
$234
Typical prices: $297-488
Hawaiian Airlines
Wed 10/15Tue 10/21
CHS - SEA • Non-stop
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Seattle!
Expert advice

Expert advice for your flight from Charleston to Seattle

 
Snippets provided in this section are AI-generated based on a summarization of KAYAK-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Airports
CHS

For quick security, arrive 90 minutes early. CHS is small, often clearing security in 15 minutes, but flights are usually full, so don't risk missing yours.

Read more about CHSby Brandon Schultz
SEA

Use the Link light rail for a cost-effective 40-minute trip to downtown Seattle. It's cheaper than ride-hailing services, especially during rush hours.

Read more about SEAby Harriet Baskas
Our travel experts
Harriet Baskas

Harriet Baskas

Expert on SEA

Harriet Baskas

Harriet Baskas

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more
Brandon Schultz

Brandon Schultz

Expert on CHS

Brandon Schultz

Brandon Schultz

Brandon Schultz is an award-winning food and travel writer based in New York City. His work has appeared in Forbes, AAA, Thrillist, Travel + Leisure, and The Daily Meal, among many others, and he is the author of 6 books, including 3 cookbooks.

Read more
Booking Insights

KAYAK's insights & trends for Charleston to Seattle flights

Get data-powered insights and trends into flights from Charleston to Seattle to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Charleston to Seattle?

The average price of all round-trip flights from Charleston to Seattle clicked on KAYAK for each day over the last 12 months.

When flying from Charleston to Seattle, you should consider leaving on a Tuesday and avoid Sundays if you are looking for the best rates. For your return to Charleston, you’ll find the best rates on Tuesdays and the most expensive ones on Sundays.

What is the cheapest month to fly from Charleston to Seattle?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Charleston to Seattle, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Charleston to Seattle is October, where tickets cost $298 (return) on average. On the other hand, the most expensive months are December and June, where the average cost of round-trip tickets is $486 and $478 respectively.

Can I save money by flying with a layover from Charleston to Seattle?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $297, prices are generally cheapest when you fly direct.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Charleston to Seattle, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Charleston to Seattle, you should book around 4 weeks before departure, which saves you about 31% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 8 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$90
Best time to beat the crowds with an average 22% drop in price.
Most popular time to fly with an average 2% increase in price.
Flight from Charleston to Seattle

When to book flights from Charleston to Seattle

Are your dates flexible? Find out the best times to travel from Charleston to Seattle based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Charleston to Seattle

  • Which airlines operating this route have reduced CO2 emissions?

    Many airlines, such as Delta, Southwest, and Alaska Airlines, have taken initiatives to reduce their carbon footprint associated with this route. They do this through fuel efficiency measures and investments in sustainable aviation practices.These include using sustainable biofuels, implementing energy-efficient technologies, optimizing flight routes, and reducing single-use plastics.

  • Are there airline services for unaccompanied minors on flights to Seattle?

    Several airlines offer services for unaccompanied minors on this route, ensuring their safety and support throughout the journey. JetBlue allows a maximum of three unaccompanied minors per nonstop flight and accepts children aged 5 to 14 as unaccompanied minors.

  • Can I upgrade to first class after booking my flight from Charleston to Seattle?

    Some airlines offer upgrade options via email after booking, providing an opportunity to enjoy first class services at a more affordable price. American Airlines does offer last-minute upgrades after initial booking, where you have the opportunity to buy an upgrade to a higher cabin class at a cheaper cost.

  • What are the carry-on luggage allowances for economy class on the Charleston to Seattle flight route?

    Baggage allowances vary depending on the airline, but generally, economy class passengers are allowed one carry-on bag and one checked bag. Alaska Airlines carry-on bags must not exceed the dimensions of 22 x 14 x 9 inches and you should be able to fit it in the overhead bin unassisted.

  • What is the cheapest flight from Charleston to Seattle?

    In the last 3 days, the lowest price for a flight from Charleston to Seattle was $90 for a one-way ticket and $179 for a round-trip.

  • Do I need a passport to fly between Charleston and Seattle?

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which airports will I be using when flying from Charleston to Seattle?

    When flying out of Charleston you will be using Charleston. You will be landing at Seattle, also known as Seattle/Tacoma Intl.

  • Which airlines offer Wi-Fi service onboard planes from Charleston to Seattle?

    Alaska Airlines, Hawaiian Airlines, and American Airlines offer inflight Wi-Fi service on the Charleston to Seattle flight route.

  • Which aircraft models fly most regularly from Charleston to Seattle?

    The Boeing 737 MAX 9 is the aircraft model that flies most regularly on the Charleston to Seattle flight route.

  • Which airline alliances offer flights from Charleston to Seattle?

    oneworld is the only airline alliance operating flights between Charleston and Seattle.

  • On which days can I fly direct from Charleston to Seattle?

    There are nonstop flights from Charleston to Seattle on a daily basis.

  • Which is the best airline for flights from Charleston to Seattle, Alaska Airlines or Southwest?

    The two airlines most popular with KAYAK users for flights from Charleston to Seattle are Alaska Airlines and Southwest. With an average price for the route of $414 and an overall rating of 8.0, Alaska Airlines is the most popular choice. Southwest is also a great choice for the route, with an average price of $446 and an overall rating of 8.0.

  • How does KAYAK find such low prices on flights from Charleston to Seattle?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Charleston to Seattle.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Charleston to Seattle?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle from Charleston is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Charleston to Seattle?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Seattle with an airline and back to Charleston with another airline. Booking your flights between Charleston and SEA can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Charleston to Seattle?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Seattle from Charleston up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Charleston to Seattle

  • Looking for a cheap flight? 25% of our users found flights on this route for $153 or less one-way and $298 or less round-trip.
  • Charleston to Seattle flights often have layovers in major cities depending on the airline. American Airlines has a layover at Charlotte Douglas (CLT) while United Airlines has a layover at Washington, D.C. Dulles Intl (IAD) or Houston George Bush Intercontinental (IAH). Also, Delta features a layover at Atlanta Hartsfield-Jackson (ATL) while Alaska Airlines stops at Dallas/Fort Worth (DFW).
  • If you're open to alternatives, you can consider airports like Boeing Field/King County International Airport (BFI). One advantage of flying into BFI is its proximity to downtown Seattle, 6 miles from downtown, which means shorter travel times to downtown. Additionally, as a smaller airport, it often experiences less congestion compared to Seattle-Tacoma International Airport (SEA).
  • Seattle-Tacoma International Airport serves as a gateway to various destinations in the Pacific Northwest. From SEA, you can drive 179 miles to Portland, Oregon, 142 miles to Vancouver, British Columbia, and 260 miles to Spokane, Washington. Plan in advance the cities to visit after landing at SEA for a seamless experience and easy exploration of the region.
  • You will likely book economy, business, or first class fare tickets for your flight from Charleston to Seattle. Alaska Airlines' First Class offers a luxurious experience with extra legroom and complimentary meals, while Premium Class provides enhanced comfort and priority boarding. Main Cabin is the standard class with options for seat upgrades and additional services. Saver fare class is the most affordable option which offers no ticket changes.
  • For a peaceful and comfortable environment to relax, work, or unwind after the flight, consider airlines with lounges at SEA. Some airline lounges at SEA include Delta Air Lines Delta Sky Club, United Airlines United Club, Alaska Airlines Alaska Lounge, and British Airways Lounge. Here, you can enjoy complimentary refreshments, snacks, and beverages, making the post-flight experience more enjoyable.

Prefer to fly direct from Charleston to Seattle?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Charleston to Seattle/Tacoma Intl.
Find which airlines fly direct from Charleston Airport to Seattle/Tacoma Intl Airport, which days they fly and book direct flights.

Direct departures

Charleston to Seattle/Tacoma Intl

Monday

Alaska Airlines

Alaska Airlines

Tuesday

Alaska Airlines

Alaska Airlines

Wednesday

Alaska Airlines

Alaska Airlines

Thursday

Alaska Airlines

Alaska Airlines

Friday

Alaska Airlines

Alaska Airlines

Saturday

Alaska Airlines

Alaska Airlines

Sunday

Alaska Airlines

Alaska Airlines

See more direct flights

Direct returns

Seattle/Tacoma Intl to Charleston

Monday

Alaska Airlines

Alaska Airlines

Tuesday

Alaska Airlines

Alaska Airlines

Wednesday

Alaska Airlines

Alaska Airlines

Thursday

Alaska Airlines

Alaska Airlines

Friday

Alaska Airlines

Alaska Airlines

Saturday

Alaska Airlines

Alaska Airlines

Sunday

Alaska Airlines

Alaska Airlines

See more direct flights

Reviews of the top 5 airlines serving from Charleston to Seattle

 
See real verified KAYAK customer reviews for airlines flying from Charleston to Seattle. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Charleston to Seattle? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
Alaska AirlinesOverall score based on 10000 reviews
7.1Food
7.8Comfort
7.1Entertainment
8.1Boarding
8.5Crew
Airline reviews

My flight was delayed 2 hours which led me to lose my connection. As a consequence, I had to spend hours changing flights and hotel reservations to arrange my arrival to Vancouver.

2.0 MediocreAnonymous, Sep 2025BWI - SEA
Read more Alaska Airlines reviews

My flight was delayed 2 hours which led me to lose my connection. As a consequence, I had to spend hours changing flights and hotel reservations to arrange my arrival to Vancouver.

No Free Wifi and the flight was a tad late.

The plane was clean. They got us to the destination. It was very difficult to hear the announcements at the gate. The person was speaking way too quickly, and the sound system did not carry to all parts of the seating area at the gate. The flight left more than an hour late, which left many of the passengers missing connections.

The flights left both airports on schedule. The flight from Idaho Falls to Seattle was a typical commuter trip. The flight from Seattle to Maui was not good: It was too long for a flight in a single-aisle plane and too cramped. I kept asking myself if I would ever visit Maui again if airlines continue to run this long flight like a typical short commuter flight. I am not looking forward to the trip home.

The chicken salad was very small, the lettuce was wilted and there was no flavor. The hamburger was excellent.

Mid flight we were bothered by a bee. Kind of odd, but a bee allergy made it a bit stressful. Attendants passed by our aisle during service multiple times. Otherwise, it was fine.

5 1/2 hour flight with no food service or options is inexcusable.

Mostly good. Delayed which in my experience so far happens often with Alaska Airlines. Thank you.

Excellent overall, but had to wait 30 months while taxiing. In fact, I’m still on the plane now!

We received a check-in reminder the day before the flight, and it listed the flight at a later time. Correct flight number, same seats, etc. for 3 hours later. I called the airline to confirm and they had no record of the email. The info was wrong, and we would have missed our flight if we'd assumed it was correct. I want to know where/how we received this incorrect info.

The staff and the boarding procedure were all amazing . The one flight was not equipped with WIFI which now adays seems odd. All in all the experience was good

Perfect flight both ways. On time, courteous staff, plane comfortable and cool. Best domestic flights I’ve had in awhile.

Really low quality food especially for an international flight. The crew also was surprisingly unpleasant except couple of ladies. I know we were not in first class but that’s no reason to treat customers as less.

Flight delayed for two and half hours and then canceled altogether due to mechanical issues. No mechanic onsite to fix so had to send one from LAX.

Crew was good. The reservation got mixed up and they didn't have my TSA number. I am also a Silver Medallion and wasn't able to use Sky Priority.

Delta made it easy, comfortable and timely. The crew was fantastic.

This route with Delta always has delays or is cancelled. Aircrafts seem smaller and older. I fly Delta quite a bit - haven’t had issues with the international flights. But this route has always been the troublesome one

Three seats in first class were broken and while they were able to still acommodate us it was looking very touch and go and they had others they could not acommodate

Mechanic delay in addition to a 2 hour change in takeoff time was frustrating.

Delayed due to thunderstorms and no in-flight service due to rough weather — both of which are out of Delta’s control. Flight was good overall.

Had a hard time checking into my flight on my phone because they gave me the wrong confirmation number. Otherwise everything else went well.

First class ticket. They ran out of food and I sat hungry watching the others eat

They we able to seat my companion and I next to each other. Plane’s temperature was very cool. Willl be more prepared on return trip.

All was good and they were able to seat my travel companion next to me. Thank you.

Like the ample leg room. May as well not bother with snacks if it's only a two ounce bag of pretzels. Didn't use the entertainment option. Was there one?

What an amazing flight. I haven’t experienced this level of service in a flight in years. This will be the only way to fly to Hawaii for me in the future.

Kayak sold me a ticket after check in time. Could not check in. Could not get on flight.

Love you guys are so friendly and kind and wonderful

Agents talk too fast over intercom. I know it’s memorized and we’ve all heard it before. Just slow down a little. Stop charging for checked bags. I was pleased to get my bags promptly at each end of my flight.

Everything was great except having to check in at Alaska. That was a surprise and took extra time and effort. Should have been explained somewhere maybe on the HA electronic ticket.

Terrible. They wouldn't allow me on my flight on the 14th..

The newer screen was super cool and had the option to watch many different shows or movies. Crew was polite and helpful. However again, many children screaming bloody murder and kicking my seat, and parents doing nothing about it as usual.

Flight was good and crew was super polite. However, there were around 5 kids screaming the WHOLE 2 hours. I understand kids have to come but parents need to do something to control their children. They make the experience terrible, especially after finishing 16 hour shifts at the hospital I needed some sleep, which I did not get.

IAD with the archaic people movers is just a place to be avoided.

All of the United employees I interacted with were professional and courteous. The aircraft was clean, the food on the flight was good. No complaints here.

Armrest controller on my seat 35D and nextbooennseat 35E did not work right. Hard to press buttons to recognize and 35D had constantnpressure either upmost down somit was nearly impossible to make selections. .

I flew with my dog and had already purchased my dog’s ticket. Even that morning I had called costumer service to insure that my husband and I had seats together since the website was giving me an error when choosing our seats and the representative mentioned our dog. I showed up early to the airport and when I got to the gate and we started boarding I was help back and told that I was supposed to have a yellow tag and that I should have checked in at the counter for them to give me that tag. I was not aware of this, the representative on the phone did not say anything. Nor did I see it anywhere in the checking process online, so if you travel with a pet and are not checking in luggage, just know that you still have to go to the check in counter when arriving at the airport unless you want to be the last one to board and not have room for your carry on in the overhead bins. Other than that, I had a great experience.

Once we got in the air the pilot made up some of the time of the delay. So that was really nice.

I understand stuff happens, but plane failures are likely due to lack of maintenance. Additionally, air conditioning wasn't working, no snack/drink service, no WiFi. Fortunately, the crew was communicative and light-hearted. United grabbed another plane and we were able to get to our destination.

There was no food available for this red eye... one little waffle cookie for a 6+ hour flight... thank God I was able to sleep some

American almost always Delays flights from Austin to Dallas and back. I cannot believe they have such poor service on this route. I was about to switch to American from Delta, but they gave me enough reasons not to.

Lost bag and 2 days no word leaving for cruise no clothes or stuff

Given it’s a red-eye into Charolotte, we didn’t get any food. The survey does not include “N/A” so the rating will be skewed.

Great. Quick and quiet and east. The breakfast choices were a welcome surprise!

American airlines suck they delay the flights all the time made me sleep in an airport because my flight was delayed and I miss my connecting flight

There's nothing I liked about it. For first off I scheduled this trip two weeks in advance then they delayed my flight which messed up my whole trip. So I scheduled it for the following weekend thinking there won't be a delay and guess what as soon as I got to the airport we said in the airplane on the tarmac for an hour and a half. Not only was it delayed I missed my connecting flight meaning I had to stay the night at Dallas-Fort Worth airport sleeping on the floor. I will tell you this I will never fly American airlines ever again I have had nothing but horrible experience with them and I just throw money at them

The stewardess hit me with the food kart twice on the head and didn't say I'm sorry once. The same stewardess gave me a warm Apple Juice with No ice. The Flight was delayed for Departure 6 times, starting from 2:36pm, finally taking off 7:50pm. I was late picking up my child from the sitter by 3 hours.

Having to reschedule flights a day later, they loaded by luggage on the wrong plane from Little rock now I have to HOPE they deliver it to where im staying like they said would. International flight crew was very disgruntled and not very friendly.

We will be writing a long, detailed letter to corporate about our awful experience with American airlines.

It took way too long to diagnose and solve the problem of a broken crew member cabin seat. Though compensation for the volunteer who left the flight was very kind.

Everything you need to know for your flight from Charleston to Seattle

Information on your arrival and departure airports

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