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Cheap Flights from Charleston to Seattle

Compare Charleston to Seattle flight deals

Find the cheapest month or even day of the year to fly to Seattle

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Flight deals from Charleston to Seattle

Looking for a cheap last-minute deal or the best return flight from Charleston Airport to Seattle? If you want to travel next month, return fares start from R 5,351. Find the lowest prices on one-way and return tickets right here.
Seattle.R 1,856 per passenger.Departing Sat, 10 Oct.One-way flight with United.Outbound indirect flight with United, departs from Charleston on Sat, 10 Oct, arriving in Seattle / Tacoma International.Price includes taxes and charges.From R 1,856, select.
Seattle.R 1,858 per passenger.Departing Fri, 25 Sep.One-way flight with United.Outbound indirect flight with United, departs from Charleston on Fri, 25 Sep, arriving in Seattle / Tacoma International.Price includes taxes and charges.From R 1,858, select.
Seattle.R 1,924 per passenger.Departing Fri, 15 Jan.One-way flight with United.Outbound indirect flight with United, departs from Charleston on Fri, 15 Jan, arriving in Seattle / Tacoma International.Price includes taxes and charges.From R 1,924, select.
Seattle.R 1,924 per passenger.Departing Thu, 27 Aug.One-way flight with United.Outbound indirect flight with United, departs from Charleston on Thu, 27 Aug, arriving in Seattle / Tacoma International.Price includes taxes and charges.From R 1,924, select.
Seattle.R 1,936 per passenger.Departing Mon, 20 Jul.One-way flight with Delta.Outbound indirect flight with Delta, departs from Charleston on Mon, 20 Jul, arriving in Seattle / Tacoma International.Price includes taxes and charges.From R 1,936, select.
Seattle.R 2,293 per passenger.Departing Fri, 20 Nov.One-way flight with Delta.Outbound indirect flight with Delta, departs from Charleston on Fri, 20 Nov, arriving in Seattle / Tacoma International.Price includes taxes and charges.From R 2,293, select.
Seattle.R 3,176 per passenger.Departing Tue, 23 Jun.One-way flight with United.Outbound indirect flight with United, departs from Charleston on Tue, 23 Jun, arriving in Seattle / Tacoma International.Price includes taxes and charges.From R 3,176, select.
Seattle.R 3,554 per passenger.Departing Fri, 8 Jan.One-way flight with Alaska Airlines.Outbound direct flight with Alaska Airlines departs from Charleston on Fri, 8 Jan, arriving in Seattle / Tacoma International.Price includes taxes and charges.From R 3,554, select.
Seattle.R 3,554 per passenger.Departing Fri, 20 Nov.One-way flight with Alaska Airlines.Outbound direct flight with Alaska Airlines departs from Charleston on Fri, 20 Nov, arriving in Seattle / Tacoma International.Price includes taxes and charges.From R 3,554, select.
Seattle.R 6,169 per passenger.Departing Mon, 6 Jul.One-way flight with Alaska Airlines.Outbound direct flight with Alaska Airlines departs from Charleston on Mon, 6 Jul, arriving in Seattle / Tacoma International.Price includes taxes and charges.From R 6,169, select.
Seattle.R 7,352 per passenger.Departing Fri, 26 Jun.One-way flight with Alaska Airlines.Outbound direct flight with Alaska Airlines departs from Charleston on Fri, 26 Jun, arriving in Seattle / Tacoma International.Price includes taxes and charges.From R 7,352, select.

Find the cheapest month to fly from Charleston to Seattle

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Charleston to Seattle flights are currently cheapest in October.
Jun
from R 3,183
Jul
from R 1,941
Aug
from R 1,929
Sep
from R 1,862
Oct
from R 1,860
Nov
from R 2,298
Dec
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Jan
from R 1,929
Feb
Find prices
Mar
Find prices
Apr
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May
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Direct flights from Charleston to Seattle

Alternative Charleston to Seattle routes

Looking for the cheapest, fastest or easiest route from Charleston to Seattle? You could fly into the following airports instead.

Seattle Lake Union SPB

2km from central Seattle
Closest
from R 5,751
Search flights

Seattle Boeing Fld

11km from central Seattle
from R 5,427
Search flights

Seattle / Tacoma International

20km from central Seattle
Cheapest
from R 1,856
Search flights

Paine Field

33km from central Seattle
from R 8,717
Search flights

Charleston to Seattle: Flight information

The things to know before you go.
Cheapest flight foundR 1,856
Cheapest month to flyOctober
Average flight time5 hrs, 57 mins
Most popular airlineAlaska Airlines
Average flights per week8

Finding cheap flights from Charleston to Seattle: Frequently asked questions

There are 4 airports in Seattle: Seattle Lake Union SPB, Seattle Boeing Fld, Seattle / Tacoma International, and Paine Field.
The best price we found for a return flight from Charleston to Seattle is R 3,755. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
5 hours and 57 minutes is the average flight time from Charleston to Seattle.
Alaska Airlines flies direct from Charleston to Seattle.
As of June 2026, there are 8 flights per week flying from Charleston to Seattle.
The cheapest month to fly from Charleston to Seattle is usually September.
If you're flying from Charleston Airport, the cheapest airport near Seattle is Seattle / Tacoma International – which is 19.5 km away from the centre of Seattle. We've found flights into this airport from R 3,755.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Charleston Airport to Seattle on Friday, 25 September 2026.
Yes – the average flight time is 5 hours and 57 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Seattle but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Seattle is around 40 days in advance, so don’t leave your flight to the last minute.
In June, the average temperature is usually around 14°C. August is typically the warmest month in Seattle, when it usually averages around 23°C. You can expect the least rain in July. The coldest month is December, with temperatures averaging 0°C. The rainiest month is November.
Currently, United and Alaska Airlines offer the cheapest flight tickets to Seattle.

Travelling from Charleston International Airport (CHS) to Seattle: what you need to know

  • Jump on a direct flight from Charleston International Airport to Seattle and you'll be travelling for around 5 hours 15 minutes.

  • Charleston International Airport is located in Charleston. Based in the UTC-8 timezone, Seattle is three hours behind Charleston.

  • With six flights a week between the two airports, Charleston International Airport (CHS) to Seattle-Tacoma International Airport (SEA) is the most popular route. Board Alaska Airlines's 18:03 flight to get your journey from CHS to SEA underway.

  • To avoid missing your CHS to Seattle flight, allow plenty of time to check in and find your gate. Turning up two hours ahead of international departures and one hour before domestic flights is the general rule.

  • Flying over a peak time like June? Public holidays and other popular seasons can mean longer lines at security. Be extra cautious and arrive up to four hours ahead of an international flight and two hours before domestic departures.

  • You can book a direct Charleston International Airport to Seattle ticket. Start your journey at CHS and arrive at Seattle-Tacoma International Airport (SEA).

  • Look out for promotions from Alaska Airlines. This carrier has direct flights from Charleston International Airport to Seattle.

  • Located around 16 kilometres from the centre of Charleston, CHS can be reached in about 25 minutes by car. The journey on public transport takes roughly 50 minutes.

  • Looking for a hotel close to CHS? If you've booked an early flight from Charleston International Airport to Seattle, these stays put the terminal practically at your doorstep:

  • 79% of flights that leave from Charleston International Airport make it to their destination on time.

How to find the cheapest flights from Charleston International Airport (CHS) to Seattle

  • R 1,860 is the lowest price we've found for a one-way Charleston International Airport to Seattle flight. A round-trip ticket right now is R 3,746. Depending on when you want to go and the availability, these fares can change.

  • Don't leave everything to the last moment. You're more likely to pick up cheap flights from CHS to Seattle if you book ahead. Airlines often offer some great early bird discounts.

  • If you're flexible with your trip dates, try using the 'Whole month' search tool. It'll find the cheapest price across each month when searching for your Charleston International Airport to Seattle ticket.

  • You don't need to check back in every day to find out if fares have dropped when you create a Price Alert. We'll update you as soon as there's an even bigger deal on cheap flights from CHS to Seattle.

  • Tailor your trip with filters. Pick your preferred departure and arrival times, total journey duration and airlines. You can also sort your results by 'Cheapest,' 'Fastest' or 'Best' flights from Charleston International Airport to Seattle.

Airports in Seattle

Seattle-Tacoma International Airport (SEA)

  • Seattle-Tacoma International Airport (SEA) is around 23 kilometres from central Seattle. If you're catching a taxi or a ride-share, the drive takes roughly 25 minutes.

  • It'll take around 35 minutes to get there using public transport.

  • If you're arriving on a late flight from Charleston International Airport to Seattle, few things beat the convenience of staying near the terminal. Grab your luggage from the carousel and then be showered and sleeping soon after at one of these accommodation options near SEA:

  • Booking your ride from Seattle-Tacoma International Airport about one week ahead of your flight from CHS to Seattle can help you lock in the best possible rate.

Seattle Paine Field International Airport (PAE)

  • After your flight from Charleston International Airport to Seattle has hit the runway, you can make your way to the city centre in about 40 minutes by car. Central Seattle is roughly 40 kilometres from Seattle Paine Field International Airport (PAE).

  • If you choose to travel on public transport, the ride to the centre will take you 1 hour 30 minutes or so.

  • Hang the 'Do not disturb' sign on your door and relax at a hotel close to PAE. Here are a few options where you can check in after your CHS to Seattle flight:

  • Get your ideal vehicle, not just what's available, by securing your ride from PAE in advance. You can also avoid paying more than you need to, especially when the airport is busy.

King County International Airport (BFI)

  • Make tracks for the city centre after your flight from Charleston International Airport to Seattle has touched down. Central Seattle is around 11 kilometres from King County International Airport (BFI) and takes roughly 20 minutes to get to by car.

  • The journey will take roughly 35 minutes when travelling on public transport.

  • If you don't want to make your way to the centre, find a hotel near BFI. Make yourself comfortable at one of these stays after your CHS to Seattle flight:

  • Booking at least a few weeks ahead of your flight from Charleston International Airport to Seattle is always smart. As well as better prices, you'll be able to choose the vehicle make and model you prefer at BFI.

Best time to go to Seattle

  • July is the busiest month for flights from Charleston International Airport to Seattle. To avoid the crowds, plan your trip to Seattle in December.

  • When booking your Charleston International Airport to Seattle plane ticket, think about what kind of weather works for you. August is the warmest month in Seattle, with temperatures ranging from 12ºC (54ºF) to 28ºC (82ºF).

  • Search for cheap tickets from CHS to Seattle in February if you'd rather travel when it's cooler. Temperatures are at their lowest then, ranging between -1ºC (30ºF) and 11ºC (52ºF) on average.

More about Seattle

  • After booking your flight from Charleston International Airport to Seattle, choose a hotel that combines comfort with a great location. Make one of these options your base for exploring Seattle:

  • Pike Place Market and Space Needle are just two of the top-rated attractions to add to your Seattle must-do list. Keep the adventure rolling by checking out Seattle Skyline.

Explore more of the United States

  • Seattle will leave a lasting impression, but there are so many other corners of the United States waiting to be discovered. About 241 kilometres south of Seattle, a visit to Portland will keep your itinerary packed. Start with popular sights like Portland Japanese Garden, Peninsula Park Rose Garden and Beyond Van Gogh Portland.

  • Around 370 kilometres east of Seattle, Spokane is another favourite stop in the United States. Start your sightseeing at Riverside State Park, Spokane Falls (Upper Falls) and Cathedral of Our Lady of Lourdes.

Plan the rest of your trip from Charleston to Seattle

Prices shown on this page are estimated lowest prices only. Found in the last 12 days.