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Cheap flights from Charleston 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 to Seattle? Find the lowest prices on one-way and return tickets right here.
Seattle.P12,608 per passenger.Departing Thu, 1 Oct, returning Tue, 6 Oct.Return flight with Delta.Outbound indirect flight with Delta, departs from Charleston on Thu, 1 Oct, arriving in Seattle / Tacoma International.Inbound indirect flight with Delta, departs from Seattle / Tacoma International on Tue, 6 Oct, arriving in Charleston.Price includes taxes and charges.From P12,608, select.
Seattle.P13,646 per passenger.Departing Tue, 7 Apr, returning Tue, 14 Apr.Return flight with United.Outbound indirect flight with United, departs from Charleston on Tue, 7 Apr, arriving in Seattle / Tacoma International.Inbound indirect flight with United, departs from Seattle / Tacoma International on Tue, 14 Apr, arriving in Charleston.Price includes taxes and charges.From P13,646, select.
Seattle.P14,859 per passenger.Departing Thu, 12 Mar, returning Mon, 16 Mar.Return flight with United.Outbound indirect flight with United, departs from Charleston on Thu, 12 Mar, arriving in Seattle / Tacoma International.Inbound indirect flight with United, departs from Seattle / Tacoma International on Mon, 16 Mar, arriving in Charleston.Price includes taxes and charges.From P14,859, select.
Seattle.P14,916 per passenger.Departing Sat, 22 Aug, returning Sun, 30 Aug.Return flight with United.Outbound indirect flight with United, departs from Charleston on Sat, 22 Aug, arriving in Seattle / Tacoma International.Inbound indirect flight with United, departs from Seattle / Tacoma International on Sun, 30 Aug, arriving in Charleston.Price includes taxes and charges.From P14,916, select.
Seattle.P17,647 per passenger.Departing Fri, 11 Sep, returning Wed, 16 Sep.Return flight with United.Outbound indirect flight with United, departs from Charleston on Fri, 11 Sep, arriving in Seattle / Tacoma International.Inbound indirect flight with United, departs from Seattle / Tacoma International on Wed, 16 Sep, arriving in Charleston.Price includes taxes and charges.From P17,647, select.
Seattle.P18,639 per passenger.Departing Thu, 4 Jun, returning Sun, 7 Jun.Return flight with United.Outbound indirect flight with United, departs from Charleston on Thu, 4 Jun, arriving in Seattle / Tacoma International.Inbound indirect flight with United, departs from Seattle / Tacoma International on Sun, 7 Jun, arriving in Charleston.Price includes taxes and charges.From P18,639, select.
Seattle.P18,982 per passenger.Departing Tue, 7 Jul, returning Sun, 19 Jul.Return flight with United.Outbound indirect flight with United, departs from Charleston on Tue, 7 Jul, arriving in Seattle / Tacoma International.Inbound indirect flight with United, departs from Seattle / Tacoma International on Sun, 19 Jul, arriving in Charleston.Price includes taxes and charges.From P18,982, select.
Seattle.P19,945 per passenger.Departing Wed, 22 Jul, returning Wed, 5 Aug.Return flight with United.Outbound indirect flight with United, departs from Charleston on Wed, 22 Jul, arriving in Seattle / Tacoma International.Inbound indirect flight with United, departs from Seattle / Tacoma International on Wed, 5 Aug, arriving in Charleston.Price includes taxes and charges.From P19,945, 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.
Feb
from P30,965
Mar
from P14,859
Apr
from P13,646
May
Find prices
Jun
from P18,639
Jul
from P18,982
Aug
from P14,916
Sep
from P17,647
Oct
from P12,608
Nov
Find prices
Dec
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Jan
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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
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Seattle Boeing Fld

11km from central Seattle
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Seattle / Tacoma International

20km from central Seattle
Cheapest
from P12,608
Search flights

Paine Field

33km from central Seattle
Search flights

Charleston to Seattle: Flight information

The things to know before you go.
Cheapest flight foundP12,608
Cheapest month to flyOctober
Average flight time6 hrs, 8 mins
Most popular airlineHawaiian Airlines
Average flights per week10

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 P12,608. 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.
6 hours and 8 minutes is the average flight time from Charleston to Seattle.
Hawaiian Airlines and Alaska Airlines fly direct from Charleston to Seattle.
As of February 2026, there are 10 flights per week flying from Charleston to Seattle.
The cheapest month to fly from Charleston to Seattle is usually October.
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 P12,608.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Charleston Airport to Seattle on Thursday, 1 October 2026.
Yes – the average flight time is 6 hours and 8 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 February, the average temperature is usually around 4°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, Delta and Hawaiian Airlines offer the cheapest flight tickets to Seattle.

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

  • Expect to be in the air for 5 hours 15 minutes. That's the average journey time for a direct flight from Charleston International Airport to Seattle.

  • The timezone in Seattle is UTC-7. The city is three hours behind Charleston, where Charleston International Airport is located.

  • Charleston International Airport (CHS) to Seattle-Tacoma International Airport (SEA) is the most traveled route, with seven departures a week to pick from. You can travel from CHS to SEA at 18:03 with Alaska Airlines.

  • For hassle-free travel, arrive at the airport two hours ahead of international flights and an hour before domestic departures. That way, you can comfortably catch your CHS to Seattle flight.

  • Longer lines at check-in and security are more likely if you're flying during high season, so allow some extra breathing space. A good rule for peak periods? Arrive up to four hours ahead for international flights and at least two hours for domestic departures.

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

  • Take to the skies with Alaska Airlines. This popular airline operates direct flights from Charleston International Airport to Seattle.

  • CHS is about 16 kilometres from central Charleston. If you're ride-sharing, catching a cab or driving from the centre, it'll take 30 minutes or so to get there, depending on the traffic. If you're taking public transport, expect the journey time to be around 3 hours 35 minutes.

  • In search of a hotel close to CHS? If you're catching an early flight from Charleston International Airport to Seattle, these accommodation options set you up for a seamless send-off:

  • 81.5% of flights departing from Charleston International Airport arrive at their destination on schedule. With its reliable on-time performance, you're unlikely to be delayed when jetting out of CHS.

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

  • P5,716 is the cheapest price we've found for a one-way Charleston International Airport to Seattle flight. A return plane ticket right now is P12,608. Depending on when you book and the availability, these fares can change.

  • Book one month before you want to fly. Pricing trends suggest that this is the ideal window for finding cheap flights from CHS to Seattle.

  • Plan your trip for May. That's the best month for landing an epic deal on Charleston International Airport to Seattle tickets. If your travel dates are flexible, use the 'Whole month' tool to access the cheapest price across every month.

  • Never miss a deal on cheap flights from CHS to Seattle by creating a Price Alert. You'll receive an email or push notification on the app when a special offer becomes available.

  • Save money on your flight from Charleston International Airport to Seattle with the help of our filters. Choose your ideal times, number of stops and airlines, then sort the results by 'Cheapest' for the best deals.

Airports in Seattle

Seattle-Tacoma International Airport (SEA)

  • Seattle-Tacoma International Airport (SEA) is around 23 kilometres from the centre of Seattle. If you're grabbing a cab or a ride-share, the drive takes roughly 20 minutes.

  • Travelling by public transport typically takes 55 minutes.

  • If you have a late flight from Charleston International Airport to Seattle, few things beat the convenience of staying close to the terminal. Grab your bags from the carousel and then be showered and sleeping soon after at one of these hotels near SEA:

  • Pick up a Seattle-Tacoma International Airport rental car and discover Seattle and beyond with your own set of wheels. Thrifty, Europcar and Budget are popular outlets you can book with here.

  • For the lowest price, book your ride from Seattle-Tacoma International Airport about one week ahead of your flight from CHS to Seattle.

Lake Union Sea Plane Base Airport (LKE)

  • Once your flight from Charleston International Airport to Seattle has hit the runway, you can get to the city centre in around 10 minutes by car. Central Seattle is roughly 3 kilometres from Lake Union Sea Plane Base Airport (LKE).

  • If you travel by public transport, you'll get to the city centre in 25 minutes or so.

  • Following your CHS to Seattle flight, kick back at a hotel close to LKE. These are some comfortable accommodation options that'll help you sink into relaxation mode:

Best time to go to Seattle

  • Travel to Seattle during the high season if you like a lively atmosphere, but remember that hotel prices may be higher. Alternatively, book flights from Charleston International Airport to Seattle during low season when prices are cheaper and it's less crowded.

  • Book a Charleston International Airport to Seattle plane ticket with a departure in August if you're eager to experience the city during its warmest month. Expect temperatures to range from 12ºC (54ºF) to 28ºC (82ºF).

  • Look 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

  • When it comes to searching for somewhere to rest your head, you'll find the best places to stay in Seattle right here. Explore these hotels after you've booked your flight from Charleston International Airport to Seattle:

  • There are so many things to see and do in this city it can be tricky to know where to begin. LMN Architects, Greyhound: Bus Station and Boeing Radiation Effects Lab are top sights which should feature on any good Seattle itinerary.

Explore more of United States

  • Portland is just one of the many places in United States waiting to be explored once you've seen Seattle. Around 241 kilometres away to the south, popular attractions include Pioneer Courthouse Square, Portland Japanese Garden and Pittock Mansion.

  • If you're eager to discover another corner of United States, head for Spokane, roughly 370 kilometres east of Seattle. Manito Park, Northwest Museum of Arts & Culture and Spokane Falls are among its highlights.

Plan the rest of your trip from Charleston to Seattle

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