$574 Cheap Flights from Portland (PDX) to Xining (XNN)

View $574 flight on Tue, Oct 21, 2025Opens in a new window

Popular airlines from Portland International Airport (PDX) to Xining (XNN-Caojiabao Intl.)

Cheap Flights from Portland to Xining (PDX-XNN)

Prices were available within the past 7 days and start at $574 for one-way flights and $2,199 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Wed, May 27 - Wed, Jun 10
PDX
Portland
XNN
Xining
$2,199 Roundtrip, found 3 days ago
$2,199
Roundtrip
found 3 days ago
Select Air Canada flight, departing Wed, May 27 from Portland to Xining, returning Wed, Jun 10, priced at $2,199 found 3 days ago
Air Canada
Wed, May 27 - Wed, Jun 10
PDX
Portland
XNN
Xining
$2,282 Roundtrip, found 3 days ago
$2,282
Roundtrip
found 3 days ago
Select Air Canada flight, departing Wed, May 27 from Portland to Xining, returning Wed, Jun 10, priced at $2,282 found 3 days ago
Air Canada
Wed, May 27 - Wed, Jun 10
PDX
Portland
XNN
Xining
$2,307 Roundtrip, found 3 days ago
$2,307
Roundtrip
found 3 days ago
Select Air Canada flight, departing Wed, May 27 from Portland to Xining, returning Wed, Jun 10, priced at $2,307 found 3 days ago
Air Canada
Wed, May 27 - Wed, Jun 10
PDX
Portland
XNN
Xining
$2,379 Roundtrip, found 3 days ago
$2,379
Roundtrip
found 3 days ago
Select Air Canada flight, departing Wed, May 27 from Portland to Xining, returning Wed, Jun 10, priced at $2,379 found 3 days ago
Air Canada
Wed, May 27 - Wed, Jun 10
PDX
Portland
XNN
Xining
$2,390 Roundtrip, found 3 days ago
$2,390
Roundtrip
found 3 days ago
Select Air Canada flight, departing Wed, May 27 from Portland to Xining, returning Wed, Jun 10, priced at $2,390 found 3 days ago
Air Canada
Wed, May 27 - Wed, Jun 10
PDX
Portland
XNN
Xining
$2,487 Roundtrip, found 3 days ago
$2,487
Roundtrip
found 3 days ago
Select Air Canada flight, departing Wed, May 27 from Portland to Xining, returning Wed, Jun 10, priced at $2,487 found 3 days ago
Air Canada
Wed, May 27 - Wed, Jun 10
PDX
Portland
XNN
Xining
$2,614 Roundtrip, found 3 days ago
$2,614
Roundtrip
found 3 days ago
Select Air Canada flight, departing Wed, May 27 from Portland to Xining, returning Wed, Jun 10, priced at $2,614 found 3 days ago
Air Canada
Wed, May 27 - Wed, Jun 10
PDX
Portland
XNN
Xining
$2,721 Roundtrip, found 3 days ago
$2,721
Roundtrip
found 3 days ago
Select Air Canada flight, departing Wed, May 27 from Portland to Xining, returning Wed, Jun 10, priced at $2,721 found 3 days ago
Air Canada
Wed, May 27 - Wed, Jun 10
PDX
Portland
XNN
Xining
$2,722 Roundtrip, found 3 days ago
$2,722
Roundtrip
found 3 days ago
Select Air Canada flight, departing Wed, May 27 from Portland to Xining, returning Wed, Jun 10, priced at $2,722 found 3 days ago

Frequently asked questions

How much does a flight from Portland Intl. Airport (PDX) to Xining Airport (XNN) cost?
Grab a cheap one-way flight from $574 or cheap return flight from $2,199 from Portland Intl. Airport (PDX) to Xining Airport (XNN) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Portland Intl. Airport (PDX) to Xining Airport (XNN)?
The cheapest month to fly from PDX to XNN is May, when demand is low. Off-peak months are generally when airlines offer lower prices between these airports.
What is the cheapest airline that flies from Portland Intl. Airport (PDX) to Xining Airport (XNN)?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from PDX to XNN. Then, sort your results by "Price (lowest to highest)" to snap up a good deal.
How many flights per day from Portland Intl. Airport (PDX) to Xining Airport (XNN)?
There are no daily direct flights departing from Portland Intl. Airport (PDX) to Xining Airport (XNN). But you can choose flights with layovers. Filter your search results on Expedia to include one or two stops, and you'll be on your way in no time.
What day of the week has the most flights from PDX to XNN?
You'll typically find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can vary from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Portland Intl. Airport (PDX) to Xining Airport (XNN)?
To avoid possible delays on the Portland Intl. Airport (PDX) to Xining Airport (XNN) route, travel before 3 PM. Later flights are 22% more likely to be canceled.**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 Portland Intl. Airport (PDX) to Xining Airport (XNN) last-minute?
Holding off until right before your break to book a ticket from PDX to XNN often results in higher prices. While it's possible to find some last-minute deals, they aren't always guaranteed. Keep your travel schedule open for a better chance of getting a bargain.
Is it cheaper to book a PDX to XNN flight and hotel package?
Opting for a PDX to XNN flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels in one place. Pick from our impressive range of stays and then add flights, car rentals and activities to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Portland Intl. Airport (PDX) to Xining Airport (XNN)?
In most instances, you're able to cancel or reschedule your PDX to XNN flight. However, additional fees may apply, especially if you made your booking more than 24 hours ago. Double-check your itinerary for the airline's fees and guidelines on flight changes, or if you'd like further details, head to our Customer Service portal.

Travel information

Travel information

Origin airport
Portland Intl.
Destination airport
Caojiabao Intl.
Roundtrip price
$2,198
Distance
6119 mi

Book with confidence

Book with confidence

Portland to Xining Flights

The cheapest times to fly from Portland 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 Portland to Xining are during the month of May. You can find some of the cheapest flights from Portland to Xining with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Portland to Xining

Sunday is one of the best days to book for cheap flights from Portland 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 Portland 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 Portland to Xining in 2025. You can also book with separate airlines for your outbound and return journeys, from $574 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 Portland 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 Portland 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.

 

Portland to Xining Flights

Explore a world of travel with Expedia

Explore a world of travel with Expedia

*Available to One Key members.