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Lanzhou

$915+ Cheap flights from Seattle (SEA) to Lanzhou (LHW)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/5. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — LHW
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
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Cheap flight deals from Seattle to Lanzhou

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Lanzhou (LHW). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated October 30, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$915
(Hainan Airlines)
Provider with most accurate pricing for Seattle/Tacoma Intl-Lanzhou Arpt flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Lanzhou Arpt flights.
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From Seattle/Tacoma Intl to Lanzhou Arpt
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Find flight deals from Seattle to Lanzhou

Best flights from Seattle to Lanzhou
Discover carefully curated flight deals from Seattle to Lanzhou that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 30, 2025.

This Hainan Airlines deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Hainan Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/510:05 amSEA - LHW
3 stops38h 55mHainan Airlines
Mon 3/911:30 amLHW - SEA
1 stop36h 30mHainan Airlines
Deal found 10/29$915

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Lanzhou that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 30, 2025.
Use the filters below to find and compare flights from Seattle to Lanzhou that are best for you.

Fly from

Seattle

Fly to

Lanzhou

Route

Depart

Return

Price

SeattleLanzhou

SEA - LHW

SEALHW

Seattle/Tacoma Intl

Thu 3/5

10:05 am-5:00 pm

3 stops38h 55m

Lanzhou Arpt

Mon 3/9

11:30 am-9:00 am

1 stop36h 30m

$915

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/29

  • Most accurate provider: When it comes to deals on Seattle-Lanzhou flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Seattle-Lanzhou flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Seattle-Lanzhou flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-Lanzhou flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Lanzhou flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Seattle to Lanzhou

Have a flexible travel schedule? Discover the best time to fly to Lanzhou from Seattle with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Lanzhou. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Seattle to Lanzhou?

    Hainan Airlines can get you from Seattle to Lanzhou in just under 38h 55m. Your travel time can differ by up to . Seattle and Lanzhou are separated by a distance of 5975 mi.

  • Can I find deals for flights from Seattle to Lanzhou that include hotel bookings?

    Yes. In addition to deals on Seattle to Lanzhou flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Lanzhou?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Lanzhou.

  • Can I find deals for business class flights from Seattle to Lanzhou?

    Yes. Cheapflights offers flight deals from Seattle to Lanzhou by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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