Cheap Flights from Seattle to Xi'an from $446

Frequently Asked Questions

• What are the cheapest flights from Seattle to Xi'an (SEA-SIA)?

  Based on Trip.com data, Hainan Airlines offers one-way fares as low as $446 on Cheapest nonstop routes (e.g. SEA to XIY on Fri, Mar 13), while Cathay Pacific offers Cheapest nonstop round-trips from $702 departing on Mon, Apr 13 and returning on Sat, Apr 18.

• Which airlines offer flights from Seattle to Xi'an?

  At the moment, several airlines serve connecting flights from Seattle to Xi'an, including: Asiana Airlines Hainan 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 Xi'an?

  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 Xi'an 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 Xi'an?

  To find best deals on flights from Seattle to Xi'an, 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 Fri, Mar 13, with one-way flights priced at just $446.
  · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Hainan 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 Xi'an travel is around July.
  · Get exclusive promo codes for Trip.com app users.

• When are flight tickets from Seattle (SEA) to Xi'an (SIA) the cheapest?

  The cheapest months to fly from Seattle to Xi'an is November, when demand for travel is lower.

• Which upcoming date is cheapest to fly from Seattle to Xi'an on?

  After crunching the numbers on our February flight calendar, it's currently cheapest to fly from Seattle to Xi'an on February 17, 2026 with Hainan Airlines, with prices starting at $495.

• Which airports can I fly to for Xi'an from Seattle?

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

• Is there any time difference between Seattle and Xi'an?

  The time difference between Xi'an and Seattle is 16h.

• How do I change or cancel my ticket from Seattle to Xi'an?

  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.