Title: Cheap Flights from Seattle (SEA) to Xining (XNN) - Expedia.ca ![Kumbum Monastery, one of the most important temples in Tibetan Buddhism.](https://images.trvl-media.com/place/3000391382/e43897da-9856-4f72-93a6-351245510691.jpg?impolicy=fcrop&w=1200&h=500&q=medium) Photo by Lorraine Choi ![](https://a.travel-assets.com/travel-assets-manager/fallback-images-brand/bex_flights_v2.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # Cheap Flights from Seattle (SEA) to Xining (XNN) - [Roundtrip](?flightType=roundtrip) - [One-way](?flightType=oneway) - [Multi-city](?flightType=multicity) ### Travellers Adults ChildrenAges 2 to 17 InfantsYounger than 2 EconomyPremium economyBusiness classFirst class Leaving from Going to Departing Returning Add a place to stay Add a car Direct flights only ## Popular airlines from Seattle-Tacoma International Airport (SEA) to Xining (XNN-Caojiabao Intl.) - ![Air Canada](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AC.svg) Air Canada [](https://www.expedia.ca/Flights-Search?leg1=from:sea,to:xnn,departure:28/10/2025TANYT&leg2=from:xnn,to:sea,departure:04/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AC"}}]) - ![WestJet](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_WS.svg) WestJet [](https://www.expedia.ca/Flights-Search?leg1=from:sea,to:xnn,departure:28/10/2025TANYT&leg2=from:xnn,to:sea,departure:04/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"WS"}}]) - ![Flair Airlines](https://a.travel-assets.com/air/airlines/f8_sq.svg) Flair Airlines [](https://www.expedia.ca/Flights-Search?leg1=from:sea,to:xnn,departure:28/10/2025TANYT&leg2=from:xnn,to:sea,departure:04/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"F8"}}]) - ![American Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AA.svg) American Airlines [](https://www.expedia.ca/Flights-Search?leg1=from:sea,to:xnn,departure:28/10/2025TANYT&leg2=from:xnn,to:sea,departure:04/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AA"}}]) - ![United](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_UA.svg) United [](https://www.expedia.ca/Flights-Search?leg1=from:sea,to:xnn,departure:28/10/2025TANYT&leg2=from:xnn,to:sea,departure:04/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"UA"}}]) - ![Delta](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_DL.svg) Delta [](https://www.expedia.ca/Flights-Search?leg1=from:sea,to:xnn,departure:28/10/2025TANYT&leg2=from:xnn,to:sea,departure:04/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"DL"}}]) - ![Porter Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_PD.svg) Porter Airlines [](https://www.expedia.ca/Flights-Search?leg1=from:sea,to:xnn,departure:28/10/2025TANYT&leg2=from:xnn,to:sea,departure:04/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"PD"}}]) ![notification illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__notification.svg) ### Be in the know Get alerts if flight prices drop or rise\* ![deals illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__deals.svg) ### Book smarter Save up to 30% on select hotels after you book a flight\* ![trophy illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__trophy.svg) ### Earn twice Earn your airline miles on top of our rewards [Sign in](https://www.expedia.ca/login) ## Frequently asked questions ### How much is a flight from SEA to Caojiapu Airport? > Start packing your suitcase, because round-trip flights between Sea-Tac Airport and Caojiapu Airport start from . That's based on airfares listed within the last 7 days on Expedia for flights departing within the next year. Prices can go up quickly, so book now to get the best deal. Prices and availability are subject to change. Additional terms apply. ### Do I need to pay a cancellation fee if I cancel my flight from SEA to XNN? > Every air carrier has its own set of terms and conditions. If you do decide to cancel, follow the instructions on our [Customer Service Portal](https://www.expedia.ca/helpcenter). ### How do I find cheap flights from Sea-Tac Airport to XNN that have flexible change policies? > Select our "No change fees" filter to find flexible travel options for your flight from SEA to Caojiapu Airport. This allows you to snag a great deal ahead of time and still have the freedom to make changes without any extra fees. Keep in mind that you'll need to cover the fare difference. ### How far is the flight from Sea-Tac Airport to Caojiapu Airport? > You'll have 9,700 kilometres to cover on the long-haul SeaTac to Haidong route. Dress in comfy clothes and consider taking some noise-cancelling headphones and a sleep mask. ### Which airlines fly direct from Sea-Tac Airport to XNN? > You won't find any airlines flying directly between Sea-Tac Airport and Caojiapu Airport, so be ready to make at least one stop on your journey. A layover, whether short or long, can be a nice way to break up a trip! ### Are Seattle - Tacoma Intl. Airport (SEA) to Caojiapu Airport flight tickets cheaper when they're purchased at the last minute? > Booking your trip from Seattle - Tacoma Intl. Airport (SEA) to Xining Airport (XNN) last minute could be your ticket to a fantastic deal. However, you might miss out on a flight altogether! If you'd rather err on the side of caution, book well ahead of your departure date. In fact, Expedia has some of the best bargains as far ahead as 12 months in advance. If your preferred carrier hasn't released tickets yet, check back often as deals are updated on Expedia all the time. ## Travel information | Origin airport | Seattle - Tacoma Intl. | | --- | --- | | Destination airport | Caojiabao Intl. | | Distance | 9633 km | ## Book with confidence ### Seattle to Haidong Flights **The easy way to book your flights from Seattle to Xining**  With Expedia, it’s simple to find and book flights to Xining from Seattle whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from airlines that cover this route. There are nonstop flights to Caojiabao Intl., too.   Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from Seattle to Xining today, tomorrow, or this week.   **Save dollars with cheap flights from Seattle - Tacoma Intl., SEA to Caojiabao Intl., XNN**  Sort your search results by price to find great deals on your flight from Seattle to Xining—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to Xining from Seattle currently is just rising to .   Here are more money-saving tips:  - Fly in when flight prices are normally at their lowest  - Book about a month to 6 weeks before you travel for the best prices to Xining   - Avoid peak season and weekends when flights can cost more - Early morning and late-night flights are sometimes cheaper, so try varying your travel times  - One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free!  **Reasons to choose Expedia for your flight to Xining from Seattle**  Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. 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