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 5/13. 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, 0 bags

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.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Charleston to Seattle.
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Everything you should know

Cheapest round-trip
$179
Overall average: $437
American Airlines
Thu 4/23Mon 4/27
CHS - SEA • 1 stop
Cheapest non-stop
$217
Typical prices: $338-$518
Alaska Airlines
Fri 3/6Tue 3/10
CHS - SEA • Non-stop
Our travelers' advice
AI-powered summary based on content written by travel experts. AI can make mistakes.
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
2 weeks
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 27% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
October
Cheapest • 20% price drop
July
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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Flight Deals
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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

Thu, Apr 23 - Mon, Apr 27
American Airlines Logo
6:33 pm - 12:30 am
CHS
-
SEA
8h 57m
1 stop
American Airlines Logo
10:47 pm - 11:35 am
SEA
-
CHS
9h 48m
1 stop
$179American Airlines
Tue, May 5 - Wed, May 13
American Airlines Logo
6:33 pm - 12:30 am
CHS
-
SEA
8h 57m
1 stop
American Airlines Logo
11:16 am - 11:03 pm
SEA
-
CHS
8h 47m
1 stop
$189American Airlines
Tue, Apr 28 - Sun, May 3
Delta Logo
6:00 am - 2:42 pm
CHS
-
SEA
11h 42m
1 stop
Delta Logo
11:59 pm - 11:46 am
SEA
-
CHS
8h 47m
1 stop
$197Delta
Tue, May 5 - Wed, May 6
American Airlines Logo
6:33 pm - 12:30 am
CHS
-
SEA
8h 57m
1 stop
American Airlines Logo
11:16 am - 10:59 pm
SEA
-
CHS
8h 43m
1 stop
$198American Airlines
Tue, Apr 28 - Sun, May 3
Delta Logo
6:00 am - 2:42 pm
CHS
-
SEA
11h 42m
1 stop
Delta Logo
11:59 pm - 11:46 am
SEA
-
CHS
8h 47m
1 stop
$199Delta
Tue, Apr 28 - Sun, May 3
Delta Logo
6:00 am - 2:42 pm
CHS
-
SEA
11h 42m
1 stop
Delta Logo
11:59 pm - 11:46 am
SEA
-
CHS
8h 47m
1 stop
$207Delta
Fri, Mar 6 - Tue, Mar 10
Alaska Airlines Logo
6:32 pm - 9:46 pm
CHS
-
SEA
6h 14mnonstop
Alaska Airlines Logo
9:28 am - 5:32 pm
SEA
-
CHS
5h 04mnonstop
$217Alaska Airlines
Wed, May 13 - Fri, May 29
Delta Logo
4:55 pm - 11:59 pm
CHS
-
SEA
10h 04m
1 stop
Delta Logo
10:35 pm - 9:40 am
SEA
-
CHS
8h 05m
1 stop
$219Delta
Wed, Mar 25 - Mon, Mar 30
Alaska Airlines Logo
6:53 pm - 10:02 pm
CHS
-
SEA
6h 09mnonstop
Alaska Airlines Logo
9:38 am - 5:53 pm
SEA
-
CHS
5h 15mnonstop
$237Alaska Airlines
Wed, Mar 11 - Tue, Apr 14
United Airlines Logo
5:06 pm - 10:59 pm
CHS
-
SEA
8h 53m
1 stop
United Airlines Logo
7:37 pm - 10:23 am
SEA
-
CHS
11h 46m
2 stops
$242United Airlines
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 Saturdays 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 $297 (return) on average. On the other hand, the most expensive months are June and March, where the average cost of round-trip tickets is $476 and $471 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 $337, 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 2 weeks before departure, which saves you about 27% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 12 weeks before departure.

Expert advice

Expert advice for your flight from Charleston to Seattle

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Harriet Baskas

Harriet Baskas

Expert on SEA

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.

Brandon Schultz

Brandon Schultz

Expert on CHS

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.

Good to know

Low seasonJanuary
Cheapest flight$90
Best time to beat the crowds with an average 13% drop in price.
Most popular time to fly with an average 8% 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, American Airlines, and JetBlue offer inflight Wi-Fi service on the Charleston to Seattle flight route.

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

    The Boeing 737-900 Passenger/BBJ3 (winglets) is the aircraft model that flies most regularly on the Charleston to Seattle flight route.

  • Which airline alliances offer flights from Charleston to Seattle?

    SkyTeam, Star Alliance, and oneworld are the airline alliances operating flights between Charleston and Seattle, with SkyTeam being the most commonly used for this route.

  • 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 $381 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 $476 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 $166 or less one-way and $307 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 11882 reviews
7.1Food
8.5Crew
7.0Entertainment
7.8Comfort
8.1Boarding
Airline reviews

The flight was on time and got in early which allowed us to get to our next flight.

10.0 ExcellentKen, Feb 2026
DFW - SEA
Read more Alaska Airlines reviews

The flight was on time and got in early which allowed us to get to our next flight.

The plane not having any overhead bin space was inconvenient. Anytime my luggage has to be checked it ends up covered in scratches and that’s not covered by the airlines for replacement/repair. The WiFi did not work or was not offered for the flight from Seattle to Vancouver.

Most of it was good. The flights were on time. The staff were helpful and friendly. I had a short time connecting flights and they let me deplane first and I made the connection. On the outbound from DTW to SEA I was seated in the middle of two very large people. I am petite and even with my arms crossed they were both hanging over into my seat touching me. The meal had way too much pepper and spice, my lips were burning. Other than those two issues, I was pleased with the service and the trip and will use Alaska Air again.

Wheelchair assistant was on the spot, and very helpful. Gate agent was kind, and made sure I boarded the plane without having to try to hurry with my painful hip. My seat was so comfortable, 20A. I am tall, 5'9 and I need to stretch out my legs due to chronic nerve pain in my back that runs down my right leg, in addition to the bursitis in my right hip. Alaska air has the best economy seating in the market. So much room for legs, elbows, etc. When I arrived in SEA, the next Wheelchair was waiting to take me to the next gate. Great communication.

I had to cancel my trip due to health reasons three days after making the reservation. I was stunned to find out that the ticket was not able to be credited for future travel. $734 loss. Not happy that this was not my experience with Southwest Airlines. I will stick with SW in the future. Boo Alaskan Air and Kayak.

The staff was extremely helpful and accommodating. The only thing I could have done without was the long layover in between flights but I was going to a less popular destination so it was understandable.

All went well, right on time, easy boarding. We ordered the evergreens grain bowl and were surprised and pleased how adequate it was for vegan lunch! Landing was smooth and gate exit was easy

My seat and tray were filthy. Someone’s used straw was in the seat pocket and there were coffee stains and food crumbs on the tray table

On time, good boarding process very quick. Clean planes. Planes are tight, not much leg room ( i am only 5'8"). Some attendants are moving through aisles fiercely and pushing passengers. Got yelled for a tiny man bag that it is an extra personal tem ( size of a wallet) Wi-Fi on the plane does not work well with android phones.

I didn’t go, and can’t use a no refundable ticket.

Flight was delayed and no reasons provided. After the passengers were boarded, the crew made announcement that the captain has jot arrived and he would take another 15 mins. All passengers patiently sat until the captain came and started. Terrible experience!

Flight was delayed. No information on why it was delayed. After we boarded the flight, , the crew made announcement that the captain hs not arrived and he will take 15 mins more to arrive. Passengers were just sitting patiently for the captain to arrive and start, Terrible experience.

Totally worth the miles to upgrade to Delta Comfort. Plenty of legroom.

This was my first time flying Delta ever and I had a great experience!

Smallest leg room I've ever had on a plane.

They took all carry-on luggage from Groups 6 -9 - I was group 5 and waiting in line to board - they made me check my luggage too. That then went to baggage claim and delayed departure from the airport. There was overhead room in my seating area - Delta over reacted. Also, had a gentleman next to me that took up 1/2 my seat.

Flight delay was frustrating, also you cannot checkin online without delta app, web browser check-in throw errors

The gate agent was most helpful in getting me on to fly standby. I greatly appreciate it.

bulkhead seat had very little legroom - even in bsiness class.

The plane was an older model, so it wasn’t as comfortable as others. The flight attendants were not helpful during onboarding. It was a full flight so there was chaos finding space for baggage.

No charging outlets worked. Other than collecting trash attendants didn’t come around. No one could hear flight attendants announcements during the flight. Seat pads were horrible. Sitting on a board for 5 hours. What happened to Hawaiian airlines comfort, hospitality, and extras? Our pilots did an excellent job trying to minimize turbulence and incredible job in landing in windy conditions.

I like that if they asked you to checked in a bag at the gate they give you priority to board

Horrible food and crew. Crew were laughing and talking loud while people were trying to sleep

Yall need to integrate your system with Alaska more efficiently. They booted me off the first flight because of a discrepancy on your end.

The crew at Hawaiian Airlines was fantastic. Kind and hard working. The pilots were great with giving us all the updates to make sure we were informed.

Very good. Nice plane and we sat in economy plus - bigger seats, more room. They served a meal and snacks, and the meal was an apple stuffed pancake that was very good! The snack for us was a hummus sandwich - also very good. The flight attendants were helpful and nice. They have plenty of movies and shows to watch. My only negative -- they changed our flights around and did not adjust the layovers, so we ended up with a very long and unnecessary layover in Honolulu.

I liked the Starlink WiFi but didn't like how they said they were the only airline to offer a free meal and it turns out to be just a standalone sandwich and then charge for snacks to go with it. Rather have the free snacks like Southwest, but have the option to purchase a decent meal for a 5+ hour flight.

Flight scheduled to take off at 5.55pm but it did not take off until 7pm due to some food delivery delay.

Unfortunately, I was put into the middle seat in the first row of premium seating. Sounds nice right? No! that is the worst seat in the plane. I wish I was in economy rather than be in that seat! There is no seat back pocket, no tray table, no charger. Nothing! so unless you're row mates are willing to let you share their basic amenities any flyer should have, you are stuck. It was the worst experience ever! And the flight attendant forgot to take my drink order. I felt like the forgotten flyer.

Delayed and cancelled flights were hard and very stressful, both ways!

Very old flight - time to retire it for newer airplanes

2+ hours delayed Outlet in row 12 did not work Tv monitors did not work Lights kept off the entire flight for at 5pm-7pm flight

Very disappointing given gate agent behavior. Filed a formal complaint with United.

Do not like the size of the overhead bin. I think staff should monitor the size of suitcases that are being carried on by passengers to ensure they meet the size requirement.

Crew was great (professional, attentive, prompt). Snacks for 4 hrs flight is deplorable.

Flight delayed. WiFi connectivity very poor if not existant. Last minute arrival forced me to run to catch my connection.

Both of my flights arrived early and check in process was smooth

Terrible. No customer service, no food, no drinks on a 6 hour premier economy booking.

Short flight, but no drink/snack service. The flights both going and coming were delayed.

Much better than Spirit. I was please by the easy fast check in and boarding

Boarding delayed 20 minutes for no reason, no wifi, in flight entertainment, or snacks / waters?

Didn't get a seat assignment until the last minute even though i picked a seat.

American has been able to implement an algorithm that makes it possible for nearly every one of my evening flights to be late. Congratulations!

I was on a small regional flight from Detroit to Philadelphia. When we landed the outside cruise needed to turn something off with the engine, which took quite a long time. Then, when they allowed us to get off the plane it was outside. They took their time, unloading all the luggage and waited till they unloaded all the luggage before they brought it over to us. It was 9 o’clock at night freezing cold out, and there was no proactive hustle to try to get people their luggage. It was really one of the worst experiences I think I’ve ever had with American until a manager came over. I don’t think they were going to even consider pulling the luggage over to the people that had been waiting outside for at least 10 minutes in the freezing cold.

The flight was fine, once we got underway. It was more than hour delayed

Beverage service was not good. Also just one service in 5 hr 30 min flight. No ask fir water ir anything beside one time beverage service.

Waited for oxygen tanks for 30 minutes after boarding was complete.

The seats are too uncomfortable for anyone over 5ft 8in. I'm 5'10" with a back and hip issue and I was in pai for the full duration of the flight.

The flight was on time/early, attentive crew, and everything overall went smoothly. Disappointed that WIFI was not working for the flight.

One day, I do so hope for a gluten free snack! Seems like with the rest of the world FINALLY figuring out what gluten free is, American Airlines would too. Fingers crossed!!

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

Information on your arrival and departure airports