$531 Cheap Flights from Seattle (SEA) to Xining (XNN)

View $531 flight on Tue, Nov 4, 2025Opens in a new window

Popular airlines from Seattle-Tacoma International Airport (SEA) to Xining (XNN-Caojiabao Intl.)

Cheap Flights from Seattle to Xining (SEA-XNN)

Prices were available within the past 7 days and start at $531 for one-way flights and $1,390 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air China
Thu, Oct 23 - Wed, Nov 5
SEA
Seattle
XNN
Xining
$1,390 Roundtrip, found 5 days ago
$1,390
Roundtrip
found 5 days ago
Select Air China flight, departing Thu, Oct 23 from Seattle to Xining, returning Wed, Nov 5, priced at $1,390 found 5 days ago
Qatar Airways
Sat, Nov 1 - Fri, Nov 14
SEA
Seattle
XNN
Xining
$1,429 Roundtrip, found 3 days ago
$1,429
Roundtrip
found 3 days ago
Select Qatar Airways flight, departing Sat, Nov 1 from Seattle to Xining, returning Fri, Nov 14, priced at $1,429 found 3 days ago
Qatar Airways
Thu, Oct 23 - Wed, Nov 5
SEA
Seattle
XNN
Xining
$1,445 Roundtrip, found 1 day ago
$1,445
Roundtrip
found 1 day ago
Select Qatar Airways flight, departing Thu, Oct 23 from Seattle to Xining, returning Wed, Nov 5, priced at $1,445 found 1 day ago
Qatar Airways
Thu, Oct 23 - Wed, Nov 5
SEA
Seattle
XNN
Xining
$1,460 Roundtrip, found 5 days ago
$1,460
Roundtrip
found 5 days ago
Select Qatar Airways flight, departing Thu, Oct 23 from Seattle to Xining, returning Wed, Nov 5, priced at $1,460 found 5 days ago
Qatar Airways
Sat, Nov 1 - Fri, Nov 14
SEA
Seattle
XNN
Xining
$1,474 Roundtrip, found 3 days ago
$1,474
Roundtrip
found 3 days ago
Select Qatar Airways flight, departing Sat, Nov 1 from Seattle to Xining, returning Fri, Nov 14, priced at $1,474 found 3 days ago
Alaska Airlines
Thu, Oct 23 - Wed, Nov 5
SEA
Seattle
XNN
Xining
$1,518 Roundtrip, found 1 day ago
$1,518
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Thu, Oct 23 from Seattle to Xining, returning Wed, Nov 5, priced at $1,518 found 1 day ago
Air China
Thu, Oct 23 - Wed, Nov 5
SEA
Seattle
XNN
Xining
$1,529 Roundtrip, found 1 day ago
$1,529
Roundtrip
found 1 day ago
Select Air China flight, departing Thu, Oct 23 from Seattle to Xining, returning Wed, Nov 5, priced at $1,529 found 1 day ago
Alaska Airlines
Thu, Oct 23 - Wed, Nov 5
SEA
Seattle
XNN
Xining
$1,530 Roundtrip, found 1 day ago
$1,530
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Thu, Oct 23 from Seattle to Xining, returning Wed, Nov 5, priced at $1,530 found 1 day ago
Alaska Airlines
Thu, Oct 23 - Wed, Nov 5
SEA
Seattle
XNN
Xining
$1,540 Roundtrip, found 1 day ago
$1,540
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Thu, Oct 23 from Seattle to Xining, returning Wed, Nov 5, priced at $1,540 found 1 day ago
Air Canada
Thu, Oct 23 - Wed, Nov 5
SEA
Seattle
XNN
Xining
$2,011 Roundtrip, found 1 day ago
$2,011
Roundtrip
found 1 day ago
Select Air Canada flight, departing Thu, Oct 23 from Seattle to Xining, returning Wed, Nov 5, priced at $2,011 found 1 day ago

Frequently asked questions

How much does a flight from Seattle - Tacoma Intl. Airport (SEA) to Xining Airport (XNN) cost?
Secure a cheap one-way flight from $531 or cheap return flight from $1,390 from Seattle - Tacoma Intl. Airport (SEA) to Xining Airport (XNN) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Seattle - Tacoma Intl. Airport (SEA) to Xining Airport (XNN)?
Traveling in October may help you find better deals, as it's the cheapest month for flights between SEA and XNN. You'll often find the lowest prices during off-peak months.
What is the cheapest airline that flies from Seattle - Tacoma Intl. Airport (SEA) to Xining Airport (XNN)?
To find the cheapest airline flying from SEA to XNN, use Expedia's filter tool. Customize your search based on your travel needs, such as preferred carriers and number of stops. You can then sort your results by "Price (lowest to highest)" to discover the cheapest flight right away.
How many flights per day from Seattle - Tacoma Intl. Airport (SEA) to Xining Airport (XNN)?
Direct flights from Seattle - Tacoma Intl. Airport (SEA) to Xining Airport (XNN) aren't available daily, so you'll need to take a flight with a layover. Explore your options with our filter tool. Enter your dates and pick either "1 Stop" or "2+ Stops."
What day of the week has the most flights from SEA to XNN?
Friday is generally the busiest day for flights, while Tuesday is often the quietest.* Just remember that flight schedules can change depending on various factors, including the carrier and season.*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 Xining Airport (XNN)?
To avoid possible delays on the Seattle - Tacoma Intl. Airport (SEA) to Xining Airport (XNN) route, aim to travel before 3 PM. Departures after this time have a 22% higher chance of cancellation.**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 Xining Airport (XNN) last-minute?
Booking your flight from SEA to XNN shortly before your trip is generally more expensive. However, if you're flexible with your departure dates and times, you could land a cheap last-minute fare.
Is it cheaper to book a SEA to XNN flight and hotel package?
You'll generally save money by booking a SEA to XNN flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's easy to manage it all in one place. After choosing your preferred accommodations and flights, you can add extras such as activities, tours and car rentals.
Can I cancel or change the date of my flight from Seattle - Tacoma Intl. Airport (SEA) to Xining Airport (XNN)?
If you booked your SEA to XNN flight within the last 24 hours, you may be able to cancel or modify it without any fees. Depending on the airline and the ticket type you purchased, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal if you'd like more information.

Travel information

Travel information

Origin airport
Seattle - Tacoma Intl.
Destination airport
Caojiabao Intl.
Roundtrip price
$1,390
Distance
6021 mi

Book with confidence

Book with confidence

Seattle to Xining Flights

The cheapest times to fly from Seattle to Xining

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 Xining are during the month of October. You can find some of the cheapest flights from Seattle to Xining with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Seattle to Xining

Sunday is one of the best days to book for cheap flights from Seattle to Xining: 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 Xining

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 Xining in 2025. You can also book with separate airlines for your outbound and return journeys, from $531 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 Xining 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 Xining 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.

 

Seattle to Xining Flights

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*Available to One Key members.