Cheap flights from Seattle to Charleston

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Flight deals from Seattle to Charleston

Looking for a cheap last-minute deal or the best return flight from Seattle to Charleston? Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Seattle to Charleston

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Seattle to Charleston flights are currently cheapest in April.

Direct flights from Seattle to Charleston

Seattle to Charleston: Alternative routes

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

Seattle to Charleston: Flight information

The things to know before you go.
Cheapest flight foundP11,315
Cheapest month to flyApril
Average flight time5 hrs, 16 mins
Most popular airlineHawaiian Airlines
Average flights per week19

Finding cheap flights from Seattle to Charleston: Frequently asked questions

The best price we found for a return flight from Seattle to Charleston is P11,315. 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 16 minutes is the average flight time from Seattle to Charleston.
Hawaiian Airlines and Alaska Airlines fly direct from Seattle to Charleston.
As of March 2025, there are 19 flights per week flying from Seattle to Charleston.
The cheapest month to fly from Seattle to Charleston is usually April.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Seattle to Charleston Airport on Tuesday, 15 April 2025.
Yes – the average flight time is 5 hours and 16 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 Charleston 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 Charleston is around 40 days in advance, so don’t leave your flight to the last minute.

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

  • Seattle's main airport is Seattle-Tacoma International Airport (SEA). Explore your options for flying out of this base when booking flights from Seattle to Charleston International Airport (CHS).

  • 5 hours 13 minutes is the average journey time for a direct flight from Seattle to Charleston International Airport.

  • Charleston is 3 hours ahead of Seattle. Charleston International Airport is located in Charleston, which operates on the UTC-4 timezone.

  • With 7 direct flights a week between the two airports, Seattle-Tacoma International Airport (SEA) to Charleston International Airport (CHS) is the busiest route. Alaska Airlines operates the earliest flight at 08:55. If you prefer to get more out of your day before jetting off, the last flight from SEA to CHS is with Alaska Airlines at 09:49.

  • Give yourself plenty of time to make your flight from Seattle to CHS. As a general rule, turn up two hours before international departures and an hour ahead for domestic flights.

  • If you're getting away during a popular month like July, be at the airport even earlier. You'll want to arrive up to four hours before an international flight and two hours ahead of a domestic departure. Security lines will be longer during high seasons like Christmas, New Year and spring break.

Airports in Seattle

Seattle-Tacoma International Airport (SEA)

  • Seattle-Tacoma International Airport (SEA) is a convenient option for travelling directly to your destination. Nonstop flights from Seattle to Charleston International Airport (CHS) can be booked from this terminal.

  • You can lock in a direct flight from Seattle to Charleston International Airport with Alaska Airlines. This popular airline operates departures from SEA.

  • SEA is approximately 23 kilometres from central Seattle. To work out how to get there, use Google Maps. This essential travel app will give you the best route and your public transport options.

  • Want a relaxed start to your holiday? Stay near Seattle-Tacoma International Airport. Whether you have an early flight from Seattle to Charleston International Airport or just don't like being rushed, these hotels are ideal:

Lake Union Sea Plane Base (LKE)

  • Planning to leave from Lake Union Sea Plane Base (LKE)? You can reserve a direct flight from Seattle to Charleston International Airport (CHS) from this popular hub.

  • Alaska Airlines has direct flights from Seattle to CHS departing from LKE. Book your favourite seat and reach your destination in a single journey.

  • You can get to LKE from central Seattle in about 11 minutes by car (depending on traffic conditions). The journey on public transport will take roughly 23 minutes to cover the 3 kilometres or so.

  • Start your holiday sooner with an extra night away from home. Before catching your flight from Seattle to CHS, take it easy in one of these hotels near Lake Union Sea Plane Base:

About Charleston International Airport (CHS)

Getting from Charleston International Airport (CHS) to central Charleston

  • From Charleston International Airport, Charleston is approximately 21 kilometres away. It takes around 28 minutes to get to the centre driving.

  • It takes roughly 3 hours and 36 minutes when travelling by public transport.

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

  • Pick up a one-way ticket from Seattle to Charleston International Airport from P5,649 or travel return from just P11,315. Fares listed are subject to change and may differ when you make your booking.

  • You're more likely to find cheap tickets from Seattle to CHS when you book 8 months before your departure date. We crunched the flight price data and found that's when fares on this route are usually at their lowest.

  • May is the cheapest month for tickets from Seattle to Charleston International Airport. If you need to travel during a different time of year, use the 'Whole month' search feature to see the lowest prices for each month.

  • Finding a cheap ticket from Seattle to CHS is a breeze with Price Alerts. All you need to do is create one of these automatic alerts and we'll notify you when there's a better deal.

  • Take advantage of the filters to find your ideal trip. To see the 'Fastest,' 'Cheapest' or 'Best' flights from Seattle to Charleston International Airport, use the 'Sort by' function. You can also filter by airline, departure and arrival times, and journey duration.

The best time to fly from Seattle to Charleston International Airport (CHS)

  • April is the quietest time of year to fly to Charleston. Alternatively, follow the crowds and take your trip in July. This is the busiest month for flights from Seattle to Charleston International Airport, but the best time to go is up to you.

  • The warmest month in Charleston is July, with the temperature ranging between 24ºC and 32ºC. Book your flights from Seattle to CHS in this month if this is the type of weather you enjoy.

  • Look for cheap flights from Seattle to Charleston International Airport in January if you'd rather travel during cooler conditions. Temperatures are at their lowest then, ranging between 4ºC and 17ºC on average.

More about Charleston

  • When it comes to looking for somewhere to rest your head, you'll find the top stays in Charleston right here. Check out these hotels after you've booked your flight from Seattle to Charleston International Airport:

  • Rainbow Row and Fort Sumter National Monument are just two of the big attractions to put on your Charleston must-do list. Keep the sightseeing going at Charleston City Market.

Complete your Charleston trip with a car rental

  • Close all those tabs and leave the hard work to us. We've also got amazing deals on car rentals in Charleston once you've booked your hotel and cheap flight from Seattle to Charleston International Airport. Easily compare prices all in one place and drive off with the lowest rate in town.

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