$119 Find Cheap Flights from Charleston to Seattle - Compare and Save
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 10/17. 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.
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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.
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Recent round-trip flight deals from Charleston to Seattle
8:38 am - 4:55 pmSEA Seattle/Tacoma Intl-CHS Charleston
5h 17mnonstop
$357Alaska Airlines
Booking Insights
Price, demand and travel trends for Charleston to Seattle flights
Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights from Charleston to Seattle with more confidence.
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How much is a round-trip flight from Charleston to Seattle?
This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Charleston to Seattle departing in October.
Round-trip flights from Charleston to Seattle start at $242. Prices are below average for this route right now, with typical round-trip fares ranging from $299 to $518. The lowest price found in the past 5 days was $242 on United Airlines.
What's the cheapest day of the week to fly from Charleston to Seattle?
Wednesday is the cheapest day of the week to fly from Charleston to Seattle, it is 14% cheaper than the average day. Sunday is the most expensive day with flight prices 24% higher than average. Based on deals found by KAYAK users in the last 12 months.
What is the cheapest month to fly from Charleston to Seattle?
KAYAK internal proprietary data takes all prices for each month over the last 12 months 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.
February is the cheapest month to fly from Charleston to Seattle at $257 round-trip.
July ($496) and March ($478) are the most expensive months.
The price difference between flying in the cheapest and most expensive months is 92% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.
When are prices from Charleston to Seattle the cheapest?
Flights from Charleston to Seattle are cheapest 19 weeks before departure. Booking in this window typically costs about 34% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.
What is the cheapest airline to fly from Charleston to Seattle?
United Airlines ($242) and American Airlines ($247) are the cheapest airlines to fly round-trip from Charleston to Seattle according to KAYAK data over the last 5 days.
Which airline offers the most nonstop flights between Charleston and Seattle?
Alaska Airlines has the most frequent nonstop flights from Charleston to Seattle with 7 flights per week. Based on KAYAK flight data over the last 3 months.
What is the most popular layover airport when flying from Charleston to Seattle?
KAYAK data for 1-stop round-trips over the past 3 months. Only counts itineraries with the same layover on both legs.
Charlotte Douglas (CLT) is the most popular layover for the Charleston to Seattle route. 30% of KAYAK users who booked 1-stop round-trips over the past 3 months connected via CLT.
What is the cheapest layover airport when flying from Charleston to Seattle?
Flights via Philadelphia (PHL) offer the most affordable fares, with an average round-trip price of $258. Based on KAYAK data over the past 3 months.
Which route, including a layover, takes the shortest amount of time from Charleston to Seattle?
Atlanta Hartsfield-Jackson (ATL) offers the shortest 1-stop connection from Charleston to Seattle at 7h 52m one-way, 1h 56m longer than the 5h 56m direct flight. Based on KAYAK data over the past 3 months.
When flying from Charleston to Seattle which airport offers the shortest layover?
Atlanta Hartsfield-Jackson (ATL) had the shortest average connection time for Charleston to Seattle layovers at 288 minutes over the past 3 months.
How many nonstop flights run daily between Charleston and Seattle?
There are about 1 flights per day from Charleston to Seattle, about 7 flights per week, spread evenly across the week.
What time of day do most flights depart from Charleston to Seattle?
Based on KAYAK flight schedules for the upcoming 3 months.
Most nonstop flights from Charleston to Seattle depart in the evening, accounting for 100% of nonstop departures. Around 1 flights are scheduled in that window over the next three months.
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
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 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.
Best time to beat the crowds with an average 34% drop in price.
Most popular time to fly with an average 27% 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.
Your Charleston to Seattle flight questions, answered
Find helpful route details based on KAYAK data, including flight times, airports, airlines and booking questions.
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.
Which airlines offer extra legroom and free seat selection on Charleston to Seattle flights?
Among airlines operating Charleston to Seattle flights:
• Alaska Airlines: offers extra legroom; offers free seat selection
Extra legroom and free seat selection availability depends on fare class and route.
What airlines are available from Charleston to Seattle?
Only Alaska Airlines operates flights between Charleston and Seattle.
Which airports can I use when flying from Charleston to Seattle?
Flights from Charleston to Seattle usually depart from Charleston (CHS) and arrive at Seattle/Tacoma Intl (SEA).
Which airlines include bags at no extra cost on Charleston to Seattle flights?
Here are some options for this route, based on selected ticket types and cabin classes:
• Alaska Airlines: a cabin bag and a checked bag in Economy Class
Bag allowance can vary by ticket type, cabin class, route and airline, so travelers should check the fare details before booking.
What cabin classes can I book on flights from Charleston to Seattle?
Three cabin classes are available on flights from Charleston to Seattle:
• Economy Class • Business Class • First Class
How much can I save by taking a layover when flying from Charleston to Seattle?
On this route, layover flights are cheaper than nonstop options on average. Layover fares average $258 round-trip via Philadelphia (PHL), compared to $422 for nonstop.
Which aircraft model is used most often on flights from Charleston to Seattle?
The Boeing 737 MAX 9 family is used most often on this route, operated mainly by Alaska Airlines. Other aircraft seen on the route include Boeing 737-900 Passenger/BBJ3 (winglets) variants.
Which airports do connecting flights from Charleston to Seattle pass through?
One-stop flights from Charleston to Seattle most commonly connect through:
• Charlotte Douglas (CLT) - 30% of one-stop connections • Atlanta Hartsfield-Jackson (ATL) - 25% of one-stop connections • Chicago O'Hare Intl (ORD) - 22% of one-stop connections • Washington, D.C. Dulles Intl (IAD) - 6% of one-stop connections
Charlotte Douglas (CLT) handles the largest share of one-stop connections on this route.
Can I save money by using flexible dates for flights from Charleston to Seattle?
Yes. Being flexible with your travel dates can save you up to 31% on the Charleston to Seattle route. Wednesday is the cheapest departure day at $337 round-trip on average, while Sunday is the most expensive at $486, a difference of $149. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.
How are flight departures from Charleston to Seattle spread across the day?
Evening is the busiest departure period on Charleston to Seattle flights, with 100% of flights leaving in that window. Morning departures account for 0%, afternoon flights for 0%, and night flights for 0%.
What popular places can I visit in Seattle?
Some of the most popular sights in Seattle are Pike Place Market, Pier 66 and Lumen Field. These are among the most viewed places in Seattle on KAYAK.
What are the earliest and latest flights from Charleston to Seattle?
These are the earliest and latest flight times available from Charleston to Seattle:
• Earliest: departs at 5:58 pm and lands at 11:54 pm • Latest: departs at 7:09 pm and lands at 1:05 am.
The flight takes about 5h 56m.
How expensive are last-minute Charleston to Seattle flights?
Last-minute fares on this route - booked within 2 weeks of departure - run 18% above the route average of $391. Book 19 weeks before departure for the lowest fares.
How long is a flight from Charleston to Seattle?
A nonstop flight from Charleston to Seattle takes 5h 56m, covering 2,409 miles.
Do I need a passport to fly from Charleston to Seattle?
No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID, or another TSA-accepted form of identification.
How are flight prices from Charleston to Seattle looking right now?
One-way fares from Charleston to Seattle are currently lower than usual. Average one-way flight prices are about $135, which is 46% below the typical average for this route.
How much time can I save by choosing a different layover airport from Charleston to Seattle?
Flying via Atlanta Hartsfield-Jackson (ATL) gives the shortest average 1-stop total travel time at 7h 52m, compared with 8h 05m via Charlotte Douglas (CLT) and 8h 13m via Washington, D.C. Dulles Intl (IAD).
What is the time difference between Charleston and Seattle?
Seattle is 3 hours behind Charleston (Pacific Time vs Eastern Time). Plan for the time shift when scheduling connections or first-day activities.
What car rental options are available at Seattle/Tacoma Intl Airport (SEA)?
Seattle/Tacoma Intl Airport (SEA) hosts 5 major car rental companies, with daily rates starting from around $4 for economy cars. Top options include: · Fox · Europcar · Thrifty · Budget · Dollar
How much should I expect to pay for a Charleston to Seattle flight?
Round-trip flights from Charleston to Seattle range from $299 to $518, with an average of $391 over the past 12 months. Anything below $299 counts as a good deal.
Which airlines offer Wi-Fi on Charleston to Seattle flights?
Alaska Airlines is the only airline on the Charleston to Seattle route offering in-flight Wi-Fi. Pricing depends on fare class.
Your guide to booking Charleston to Seattle flights
Get tips on when to book, when to fly and what to know before your trip.
If your dates can be flexible, aim for a Wednesday departure instead of Sunday. On this route, Wednesday flights average $337 - about $149 less than Sunday (31% savings) based on the last 12 months.
For the best chance at a low fare, aim to book around 19 weeks before you fly. On this route, that window historically saves about 34% versus last-minute pricing (KAYAK booking data, last 12 months).
If you can choose when to travel, plan your Charleston to Seattle trip for February. Fares historically average $257 round-trip in that month - typically $239 less than the most expensive month, which is July (based on the last 12 months).
If you have the time, taking a 1-stop flight through Philadelphia Airport (PHL) can be cheaper than flying direct. The cheapest layover option averages $258 round-trip on this route - about $164 less than direct flights (based on the last 12 months).
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
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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
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Everything you need to know for your flight from Charleston to Seattle
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Cabin class types available on flights from Charleston to Seattle
Cabin classes available on flights from Charleston to Seattle. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.
The most popular flights on KAYAK according to clicks in the last 2 weeks. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.
Flights from all airports within Charleston to Seattle. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.
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