Cheap Flights from Seattle to Busan from $425

Frequently Asked Questions

• What are the cheapest flights from Seattle to Busan (SEA-PUS)?

  Based on Trip.com data, Cathay Pacific offers one-way fares as low as $425 on Cheapest nonstop routes (e.g. SEA to PUS on Thu, Sep 17), while Cathay Pacific offers Cheapest nonstop round-trips from $850 departing on Thu, Sep 3 and returning on Thu, Sep 10.

• Which airlines offer flights from Seattle to Busan?

  At the moment, several airlines serve connecting flights from Seattle to Busan, including: Alaska Airlines Selected airlines are based on historical data collected from flight bookings made by users on Trip.com within the last 90 days.

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

  By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Seattle to Busan 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 can I find the best deals on flights from Seattle to Busan?

  To find best deals on flights from Seattle to Busan, 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 Thu, Sep 17, with one-way flights priced at just $425.
  · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Cathay Pacific.
  · 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 Busan travel is around January.
  · Get exclusive promo codes for Trip.com app users.

• When are flight tickets from Seattle (SEA) to Busan (PUS) the cheapest?

  The cheapest months to fly from Seattle to Busan is September, when demand for travel is lower.

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

  After crunching the numbers on our August flight calendar, it's currently cheapest to fly from Seattle to Busan on August 24, 2026 with Cathay Pacific, with prices starting at $431.

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

  You can land at any one of the following hubs in Busan, with Seattle-Tacoma International Airport to Gimhae International Airport (SEA-PUS) is by far the most common option on this route: Gimhae International Airport (PUS).

• Is there any time difference between Seattle and Busan?

  The time difference between Busan and Seattle is 17h.

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

  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 Seattle to Busan?

  Based on Trip.com data for flights departing in the next 30 days, the average one-way fare from Seattle to Busan is $706. Fares vary by travel date, airline and availability.

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

  Enter Seattle and Busan, 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.