Skyscanner home

C$150 Cheap Flights from Charleston (CHS) to Seattle / Tacoma International (SEA)

Compare Charleston to Seattle / Tacoma International flight deals

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

Book the best Seattle / Tacoma International fare with no extra fees

TrustScore 4.5 out of 5 4.5 out of 5 based on 972 reviews Trustpilot

Flight deals from Charleston to Seattle / Tacoma International

Looking for a cheap last-minute deal or the best return flight from Charleston Airport to Seattle / Tacoma International Airport? If you want to travel next month, return fares start from C$487. Find the lowest prices on one-way and return tickets right here.
Seattle.C$150 per passenger.Departing Tue., Feb. 2.One-way flight with United.Outbound indirect flight with United, departs from Charleston on Tue., Feb. 2, arriving in Seattle / Tacoma International.Price includes taxes and charges.From C$150, select.
Seattle.C$151 per passenger.Departing Sat., Jan. 16.One-way flight with United.Outbound indirect flight with United, departs from Charleston on Sat., Jan. 16, arriving in Seattle / Tacoma International.Price includes taxes and charges.From C$151, select.
Seattle.C$161 per passenger.Departing Sat., Sep. 26.One-way flight with Delta.Outbound indirect flight with Delta, departs from Charleston on Sat., Sep. 26, arriving in Seattle / Tacoma International.Price includes taxes and charges.From C$161, select.
Seattle.C$162 per passenger.Departing Tue., Jul. 14.One-way flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Charleston on Tue., Jul. 14, arriving in Seattle / Tacoma International.Price includes taxes and charges.From C$162, select.
Seattle.C$162 per passenger.Departing Mon., Aug. 31.One-way flight with Delta.Outbound indirect flight with Delta, departs from Charleston on Mon., Aug. 31, arriving in Seattle / Tacoma International.Price includes taxes and charges.From C$162, select.
Seattle.C$162 per passenger.Departing Tue., Jun. 16.One-way flight with Delta.Outbound indirect flight with Delta, departs from Charleston on Tue., Jun. 16, arriving in Seattle / Tacoma International.Price includes taxes and charges.From C$162, select.
Seattle.C$222 per passenger.Departing Mon., Oct. 5.One-way flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Charleston on Mon., Oct. 5, arriving in Seattle / Tacoma International.Price includes taxes and charges.From C$222, select.
Seattle.C$256 per passenger.Departing Sat., Sep. 26.One-way flight with Alaska Airlines.Outbound direct flight with Alaska Airlines departs from Charleston on Sat., Sep. 26, arriving in Seattle / Tacoma International.Price includes taxes and charges.From C$256, select.
Seattle.C$257 per passenger.Departing Mon., Jun. 15.One-way flight with Alaska Airlines.Outbound direct flight with Alaska Airlines departs from Charleston on Mon., Jun. 15, arriving in Seattle / Tacoma International.Price includes taxes and charges.From C$257, select.
Seattle.C$258 per passenger.Departing Mon., Oct. 5.One-way flight with Alaska Airlines.Outbound direct flight with Alaska Airlines departs from Charleston on Mon., Oct. 5, arriving in Seattle / Tacoma International.Price includes taxes and charges.From C$258, select.
Seattle.C$258 per passenger.Departing Mon., Aug. 31.One-way flight with Alaska Airlines.Outbound direct flight with Alaska Airlines departs from Charleston on Mon., Aug. 31, arriving in Seattle / Tacoma International.Price includes taxes and charges.From C$258, select.
Seattle.C$299 per passenger.Departing Thu., May 28.One-way flight with United.Outbound indirect flight with United, departs from Charleston on Thu., May 28, arriving in Seattle / Tacoma International.Price includes taxes and charges.From C$299, select.
Seattle.C$423 per passenger.Departing Fri., May 29.One-way flight with Alaska Airlines.Outbound direct flight with Alaska Airlines departs from Charleston on Fri., May 29, arriving in Seattle / Tacoma International.Price includes taxes and charges.From C$423, select.
Seattle.C$471 per passenger.Departing Wed., Jul. 8.One-way flight with Alaska Airlines.Outbound direct flight with Alaska Airlines departs from Charleston on Wed., Jul. 8, arriving in Seattle / Tacoma International.Price includes taxes and charges.From C$471, select.

Find the cheapest month to fly from Charleston to Seattle / Tacoma International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Charleston to Seattle / Tacoma International flights are currently cheapest in February.
May
from C$299
Jun.
from C$162
Jul.
from C$162
Aug.
from C$162
Sep.
from C$161
Oct.
from C$222
Nov.
Find prices
Dec.
Find prices
Jan.
from C$151
Feb.
from C$150
Mar.
Find prices
Apr.
Find prices

Which airlines fly from Charleston to Seattle / Tacoma International?

Charleston to Seattle / Tacoma International: Alternative routes

Compare routes from Charleston to Seattle below. You may find an airport to fly into that's cheaper, faster, or easier than Seattle / Tacoma International.

Seattle Lake Union SPB

2km from central Seattle
Closest
from C$517
Search flights

Seattle Boeing Fld

11km from central Seattle
from C$489
Search flights

Seattle / Tacoma International

20km from central Seattle
Cheapest
from C$150
Search flights

Paine Field

33km from central Seattle
from C$773
Search flights

Charleston to Seattle: Flight information

The things to know before you go.
Cheapest flight foundC$150
Cheapest month to flyFebruary
Average flight time5 hrs, 58 mins
Most popular airlineAlaska Airlines
Average flights per week8

Finding cheap flights from Charleston to Seattle / Tacoma International: Frequently asked questions

The best price we found for a return flight from Charleston to Seattle / Tacoma International is C$323. 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 58 minutes is the average flight time from Charleston to Seattle / Tacoma International.
Alaska Airlines flies direct from Charleston to Seattle / Tacoma International.
As of May 2026, there are 8 flights per week flying from Charleston to Seattle / Tacoma International.
The cheapest month to fly from Charleston to Seattle / Tacoma International is usually September.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Charleston Airport to Seattle / Tacoma International Airport on Saturday, September 12, 2026.
Yes – the average flight time is 5 hours and 58 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 / Tacoma International 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.
Currently, Delta and Alaska Airlines offer the cheapest flight tickets to Seattle / Tacoma International.

Flying from Charleston International Airport (CHS) to Seattle-Tacoma International Airport (SEA): what you need to know

  • Traveling during a peak time like a public holiday? Expect longer queues at security and check-in. Give yourself extra leeway and arrive up to four hours before international flights and two hours ahead of domestic departures.

  • We make it a breeze to book a flight with a stopover. To see all your options for flights from Charleston International Airport to Seattle-Tacoma International Airport, uncheck 'Direct flights only.' Then, pick a flight with a stop long enough to tour the city of your choice. Some popular stopovers between CHS and SEA include:

    • Hartsfield-Jackson Atlanta International Airport

    • Minneapolis-St. Paul International Airport

    • Lambert-St. Louis International Airport

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

  • The lowest price we've seen for a one-way ticket from Charleston International Airport to Seattle-Tacoma International Airport is C$150. For a return flight on this route, the best price is C$323. Depending on the availability when you book, these fares can change.

  • It's often best to book in advance if you're hoping to get cheap flight tickets from CHS to SEA. That's because airlines adjust prices based on demand, which tends to increase closer to departure.

  • If you can be flexible with your travel plans, try using the 'Whole month' search tool. It'll find the cheapest price across each month when searching for your ticket from Charleston International Airport to Seattle-Tacoma International Airport.

  • Set up a Price Alert for cheap flight tickets from CHS to SEA. You don't need to search every day to see whether prices have fallen. We'll let you know when the price changes.

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

Handy information about Charleston International Airport (CHS)

  • Traveling from central Charleston to Charleston International Airport takes around 3 hours and 36 minutes on public transport. If you drive, ride-share or grab a cab, you'll cover the 21 kilometres in 28 minutes or so, depending on traffic.

  • After an easy way to start to your vacation? Stay near CHS. Whether you're on an early flight from Charleston International Airport to Seattle-Tacoma International Airport or just don't want to be rushed, these stays are perfect:

Arriving at Seattle-Tacoma International Airport (SEA)

Getting from Seattle-Tacoma International Airport (SEA) to central Seattle

  • From Seattle-Tacoma International Airport, Seattle is approximately 23 kilometres away. It takes around 18 minutes to get to the center driving.

  • Traveling on public transport typically takes 54 minutes.

When to fly to Seattle-Tacoma International Airport (SEA)

  • The quietest month for a flight from Charleston International Airport to Seattle-Tacoma International Airport is May, while July is the most popular. Choose the ideal time to go to Seattle based on whether you prefer a bustling atmosphere or a more laid-back vibe.

  • The warmest month in Seattle is August, with the temperature ranging between 12ºC and 28ºC. Lock in your flights from Charleston International Airport to Seattle-Tacoma International Airport in this month if you like this kind of weather.

  • February has average temperatures of between -1ºC and 11ºC. Look for cheap flight tickets from CHS to SEA around that time if you want to travel in cooler conditions.

More about Seattle

Complete your Seattle trip with hotels and a car rental

  • After you've secured your cheap ticket to Seattle-Tacoma International Airport, browse our low prices and exclusive offers on hotels. You can also compare a range of car rental companies in one place to get the best car rental price for your Seattle vacation.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.