$481 Cheap Flights from Seattle (SEA) to Xi'an (XIY)

View $481 flight on Tue, Sep 9, 2025Opens in a new window

Popular airlines from Seattle-Tacoma International Airport (SEA) to Xi'an (XIY-Xianyang Intl.)

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Cheap Flights from Seattle to Xi'an (SEA-XIY)

Prices were available within the past 7 days and start at $481 for one-way flights and $915 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Korean Air
Wed, Sep 10 - Wed, Sep 17
SEA
Seattle
XIY
Xi'an
$915 Roundtrip, found 16 hours ago
$915
Roundtrip
found 16 hours ago
Select Korean Air flight, departing Wed, Sep 10 from Seattle to Xi'an, returning Wed, Sep 17, priced at $915 found 16 hours ago
Korean Air
Mon, Oct 13 - Sat, Oct 18
SEA
Seattle
XIY
Xi'an
$920 Roundtrip, found 6 days ago
$920
Roundtrip
found 6 days ago
Select Korean Air flight, departing Mon, Oct 13 from Seattle to Xi'an, returning Sat, Oct 18, priced at $920 found 6 days ago
Alaska Airlines
Thu, Sep 25 - Sun, Oct 19
SEA
Seattle
XIY
Xi'an
$924 Roundtrip, found 4 days ago
$924
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Thu, Sep 25 from Seattle to Xi'an, returning Sun, Oct 19, priced at $924 found 4 days ago
Alaska Airlines
Thu, Sep 25 - Sat, Oct 18
SEA
Seattle
XIY
Xi'an
$925 Roundtrip, found 4 days ago
$925
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Thu, Sep 25 from Seattle to Xi'an, returning Sat, Oct 18, priced at $925 found 4 days ago
Alaska Airlines
Thu, Sep 25 - Sun, Oct 5
SEA
Seattle
XIY
Xi'an
$926 Roundtrip, found 2 days ago
$926
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Thu, Sep 25 from Seattle to Xi'an, returning Sun, Oct 5, priced at $926 found 2 days ago
Alaska Airlines
Tue, Sep 2 - Tue, Sep 9
SEA
Seattle
XIY
Xi'an
$932 Roundtrip, found 19 hours ago
$932
Roundtrip
found 19 hours ago
Select Alaska Airlines flight, departing Tue, Sep 2 from Seattle to Xi'an, returning Tue, Sep 9, priced at $932 found 19 hours ago
Alaska Airlines
Tue, Dec 2 - Wed, Dec 17
SEA
Seattle
XIY
Xi'an
$939 Roundtrip, found 4 days ago
$939
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Tue, Dec 2 from Seattle to Xi'an, returning Wed, Dec 17, priced at $939 found 4 days ago
Air China
Thu, Dec 4 - Tue, Dec 16
SEA
Seattle
XIY
Xi'an
$996 Roundtrip, found 4 days ago
$996
Roundtrip
found 4 days ago
Select Air China flight, departing Thu, Dec 4 from Seattle to Xi'an, returning Tue, Dec 16, priced at $996 found 4 days ago
Cathay Pacific
Thu, Sep 25 - Sun, Oct 5
SEA
Seattle
XIY
Xi'an
$1,001 Roundtrip, found 2 days ago
$1,001
Roundtrip
found 2 days ago
Select Cathay Pacific flight, departing Thu, Sep 25 from Seattle to Xi'an, returning Sun, Oct 5, priced at $1,001 found 2 days ago
Air Canada
Thu, Nov 13 - Wed, Nov 19
SEA
Seattle
XIY
Xi'an
$1,079 Roundtrip, found 17 hours ago
$1,079
Roundtrip
found 17 hours ago
Select Air Canada flight, departing Thu, Nov 13 from Seattle to Xi'an, returning Wed, Nov 19, priced at $1,079 found 17 hours ago

Find the cheapest month to fly from Seattle (SEA) to Xi'an (XIY)

August is typically the cheapest month to fly

From $904 - $2,430 per traveler.

Graph displaying average flight prices per month

Flights from Seattle (SEA) to Xi'an (XIY)
Origin airport
Seattle - Tacoma Intl.
Destination airport
Xianyang Intl.
Airlines serving
Air Canada, Air China, Asiana Airlines, Cathay Pacific, China Eastern Airlines, Hainan Airlines, Korean Air, Singapore Airlines, United
Roundtrip price
$915
Distance
5956 mi

Seattle to Xi'an Flights

The cheapest times to fly from Seattle to Xi'an

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Seattle to Xi'an are during the month of September. You can find some of the cheapest flights from Seattle to Xi'an with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Seattle to Xi'an

Sunday is one of the best days to book for cheap flights from Seattle to Xi'an: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Seattle to Xi'an

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Seattle to Xi'an in 2025. You can also book with separate airlines for your outbound and return journeys, from $481 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Seattle to Xi'an flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Seattle to Xi'an airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Seattle - Tacoma Intl. Airport (SEA) to Xianyang Intl. Airport (XIY) cost?
Discover the latest flight deals from SEA to XIY by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from SEA to XIY?
The cheapest flights from SEA to XIY are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from SEA to XIY?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from SEA to XIY. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Seattle - Tacoma Intl. Airport (SEA) to Xianyang Intl. Airport (XIY)?
You'll have to hop on a flight with a layover when traveling from Seattle - Tacoma Intl. Airport (SEA) to Xianyang Intl. Airport (XIY). Direct flights don't operate daily on this route. However, simply filter your search to include one or more stops to discover an option that works for you.
What day of the week has the most flights from SEA to XIY?
Typically you'll find the widest variety of flight choices on a Friday. Tuesdays are often the quietest.* However, this can vary depending on the season, carrier and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Seattle - Tacoma Intl. Airport (SEA) to Xianyang Intl. Airport (XIY)?
To arrive at Xianyang Intl. Airport (XIY) without delays, opt for a flight that leaves from Seattle - Tacoma Intl. Airport (SEA) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this time.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Seattle - Tacoma Intl. Airport (SEA) to Xianyang Intl. Airport (XIY) last-minute?
Waiting until just before your trip to book a ticket from SEA to XIY generally means paying more. Although you may find some last-minute deals, they're not always guaranteed. Keep your travel schedule open to maximize your chances of snagging a bargain.
Is it cheaper to book a SEA to XIY flight and hotel package?
Booking a SEA to XIY flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your trip in one place. Choose from our impressive range of accommodations and then add activities, car rentals and flights to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Seattle - Tacoma Intl. Airport (SEA) to Xianyang Intl. Airport (XIY)?
Typically, it's possible to reschedule or cancel your SEA to XIY flight. However, for bookings made more than 24 hours ago, additional fees may apply. Check your airline's policies in your itinerary to see what changes are allowed and if any costs are involved. You'll also find further details on our Customer Service portal.

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*Available to One Key members.