SEA to HKG, Seattle–Tacoma International Airport to Hong Kong International Airport Cheap Flights

Based on HopeGoo data, Air Canada offers one-way fares as low as US$205 on Cheapest nonstop routes (e.g. SEA to HKG on Mon, Mar 16), while Air Canada offers Cheapest nonstop round-trips from US$461 departing on Thu, Feb 12 and returning on Mon, Feb 16.

At the moment, several airlines serve connecting flights from Seattle to Hong Kong, including: Air Canada EVA Air China Airlines Hawaiian Airlines Selected airlines are based on historical data collected from flight bookings made by users on HopeGoo within the last 90 days.

By analyzing data from all airlines on the HopeGoo flight calendar, it looks like the best time to book a flight from Seattle to Hong Kong 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.

To find best deals on flights from Seattle to Hong Kong, you can use various tools on HopeGoo: · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Mon, Mar 16, with one-way flights priced at just US$205. · 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 HopeGoo flight deals and promo codes frequently. · Avoid peak season unless you book very early. It seems the peak season for Hong Kong travel is around January. · Get exclusive promo codes for HopeGoo app users.

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

After crunching the numbers on our February flight calendar, it's currently cheapest to fly from Seattle to Hong Kong on February 18, 2026 with Korean Air, with prices starting at US$289.

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

The time difference between Hong Kong and Seattle is 16h.

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 HopeGoo, 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.