Cheap Flights from Charleston to Seattle from US$101

Frequently Asked Questions

• What are the cheapest flights from Charleston to Seattle (CHS-SEA)?

  Based on Trip.com data, American Airlines offers one-way fares as low as US$101 on Cheapest nonstop routes (e.g. CHS to SEA on Mon, Sep 21), while United Airlines offers Cheapest nonstop round-trips from US$239 departing on Thu, Sep 24 and returning on Sun, Sep 27.

• Which airlines offer direct flights from Charleston to Seattle?

  At the moment, you can catch a nonstop flight from Charleston to Seattle with the following airlines, including: Alaska Airlines American Airlines Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.

• How long is a flight from Charleston to Seattle?

  It takes about 6 hours 54 minutes to fly from Charleston to Seattle.

• When is the best time to book flights from Charleston to Seattle?

  By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Charleston to Seattle is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.

• How many flights are there per week from Charleston to Seattle?

  Based on Trip.com data in the past 4 weeks, there is 7 flight per week flying from Charleston to Seattle. You can check the weekly schedule for popular airlines on this route below: Alaska Airlines: S/M/T/W/T/F/S -- AS787 (18:13)

• How can I find the best deals on flights from Charleston to Seattle?

  To find best deals on flights from Charleston to Seattle, you can use various tools on Trip.com:
  · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Mon, Sep 21, with one-way flights priced at just US$101.
  · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Alaska Airlines.
  · Set up price alerts to easily monitor ticket prices without having to check every day.
  · Check Trip.com flight deals and promo codes frequently.
  · Avoid peak season unless you book very early. It seems the peak season for Seattle travel is around July.
  · Get exclusive promo codes for Trip.com app users.

• When are flight tickets from Charleston (CHS) to Seattle (SEA) the cheapest?

  The cheapest months to fly from Charleston to Seattle is October, when demand for travel is lower.

• Which upcoming date is cheapest to fly from Charleston to Seattle on?

  After crunching the numbers on our August flight calendar, it's currently cheapest to fly from Charleston to Seattle on August 30, 2026 with Delta Air Lines, with prices starting at US$224.

• Which airports can I fly to for Seattle from Charleston?

  You can land at any one of the following hubs in Seattle, with Charleston International Airport to Seattle-Tacoma International Airport (CHS-SEA) is by far the most common option on this route: King County (Boeing Field) International Airport (BFI) Kenmore Air Harbor Seaplane Base (LKE) Seattle-Tacoma International Airport (SEA).

• Is there any time difference between Charleston and Seattle?

  The time difference between Seattle and Charleston is 3h.

• How do I change or cancel my ticket from Charleston to Seattle?

  Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.

• What is the average cost of a one-way flight from Charleston to Seattle?

  Based on Trip.com data for flights departing in the next 30 days, the average one-way fare from Charleston to Seattle is US$241. Fares vary by travel date, airline and availability.

• What is the average cost of a round-trip flight from Charleston to Seattle?

  Based on Trip.com data for travel in the next 30 days, the average round-trip fare from Charleston to Seattle is US$403. The final price depends on the outbound and return dates, airline and fare conditions.

• How do I book flights from Charleston to Seattle on Trip.com?

  Enter Charleston and Seattle, choose your travel dates and passengers, then compare flights by price, duration and baggage. Select a fare, review the change and cancellation rules, enter traveler details and complete payment to receive your confirmation.