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$401+ Cheap flights from Seattle (SEA) to Shanghai, China

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/21. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SHA
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Shanghai are usually found in March or April, booked 16 days in advance, depart on a Sunday or Friday and return on a Saturday

Cheap flight deals from Seattle to Shanghai

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Shanghai (CN2). 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 September 17, 2025.

Round-trip from

$693
(oojo)

One-way from

$401
(Kiwi.com)

Popular in

July

Cheapest in

March

Average price

$1,081
From Seattle/Tacoma Intl to Shanghai
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One-way flight from Seattle/Tacoma Intl to Shanghai
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Highest demand for flights based on searches. 10% potential increase in price ($138 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($25 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Seattle to Shanghai

Cheapest flights from Seattle to Shanghai
Explore the most affordable flight options available from Seattle to Shanghai. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2025.

This IEagle deal was found by Cheapflights users on 9/17. 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 IEagle is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/410:00 amSEA - PVG
1 stop35h 20mHainan Airlines
Mon 11/247:30 pmPVG - SEA
1 stop28h 30mHainan Airlines
Deal found 9/17$704
This Kiwi.com deal was found by Cheapflights users on 9/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/610:05 amSEA - PVG
1 stop32h 25mHainan Airlines
Tue 11/256:55 amPVG - SEA
1 stop17h 05mHainan Airlines
Deal found 9/17$714
This FlightHub deal was found by Cheapflights users on 9/16. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/2210:00 amSEA - SHA
1 stop17h 40mHainan Airlines
Tue 12/168:35 amSHA - SEA
1 stop15h 25mHainan Airlines
Deal found 9/16$715
This Kiwi.com deal was found by Cheapflights users on 9/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2311:00 amSEA - PVG
1 stop21h 45mHainan Airlines
Tue 10/286:55 amPVG - SEA
1 stop17h 05mHainan Airlines
Deal found 9/16$716
This Kiwi.com deal was found by Cheapflights users on 9/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/610:05 amSEA - PVG
1 stop32h 25mHainan Airlines
Wed 11/2611:45 amPVG - SEA
1 stop36h 20mHainan Airlines
Deal found 9/17$724
This KAYAK deal was found by Cheapflights users on 9/16. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2311:00 amSEA - PVG
1 stop21h 45mHainan Airlines
Mon 11/37:30 pmPVG - SEA
1 stop28h 30mHainan Airlines
Deal found 9/16$735
This oojo deal was found by Cheapflights users on 9/16. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/112:45 amSEA - PVG
1 stop23h 05mMultiple Airlines
Thu 11/139:35 amPVG - SEA
1 stop21h 30mMultiple Airlines
Deal found 9/16$737
This FlightHub deal was found by Cheapflights users on 9/16. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/2311:45 pmSEA - PVG
1 stop23h 05mMultiple Airlines
Sun 12/149:35 amPVG - SEA
1 stop21h 30mMultiple Airlines
Deal found 9/16$739
This Kiwi.com deal was found by Cheapflights users on 9/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/410:00 amSEA - PVG
1 stop35h 20mHainan Airlines
Sat 11/226:55 amPVG - SEA
1 stop17h 05mHainan Airlines
Deal found 9/17$744
This KAYAK deal was found by Cheapflights users on 9/16. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2311:00 amSEA - PVG
1 stop21h 45mHainan Airlines
Wed 10/2911:45 amPVG - SEA
1 stop36h 20mHainan Airlines
Deal found 9/16$745
This Kiwi.com deal was found by Cheapflights users on 9/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2111:00 amSEA - SHA
1 stop21h 05mHainan Airlines
Tue 10/288:35 amSHA - SEA
1 stop15h 25mHainan Airlines
Deal found 9/16$748
This Kiwi.com deal was found by Cheapflights users on 9/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2111:00 amSEA - PVG
1 stop32h 00mHainan Airlines
Tue 10/286:55 amPVG - SEA
1 stop17h 05mHainan Airlines
Deal found 9/16$748

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Shanghai 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 September 17, 2025.
Use the filters below to find and compare flights from Seattle to Shanghai that are best for you.

Fly from

Seattle

Fly to

Shanghai

Route

Depart

Return

Price

SeattleShanghai

SEA - SHA

SEASHA

Seattle/Tacoma Intl

Tue 10/28

11:00 am-7:40 pm

1 stop17h 40m

Shanghai Hongqiao Intl

Sat 11/1

8:35 am-9:00 am

1 stop15h 25m

$758

SeattleShanghai

SEA - SHA

SEASHA

Seattle/Tacoma Intl

Tue 10/28

11:00 am-10:50 pm

1 stop20h 50m

Shanghai Hongqiao Intl

Mon 11/3

8:55 pm-8:00 am

1 stop27h 05m

$765

SeattleShanghai

SEA - SHA

SEASHA

Seattle/Tacoma Intl

Sun 10/12

11:35 pm-3:30 pm

2 stops24h 55m

Shanghai Hongqiao Intl

Sat 11/22

8:35 am-8:00 am

1 stop15h 25m

$890

SeattleShanghai

SEA - PVG

SEAPVG

Seattle/Tacoma Intl

Sun 3/1

9:30 pm-9:50 am

1 stop20h 20m

Shanghai Pu Dong

Thu 3/5

4:55 pm-6:40 pm

1 stop17h 45m

$894

SeattleShanghai

SEA - PVG

SEAPVG

Seattle/Tacoma Intl

Fri 11/28

11:00 am-12:35 pm

1 stop33h 35m

Shanghai Pu Dong

Sun 1/11

2:00 pm-9:00 am

1 stop35h 00m

$915

SeattleShanghai

SEA - PVG

SEAPVG

Seattle/Tacoma Intl

Wed 10/22

12:50 pm-8:10 pm

1 stop16h 20m

Shanghai Pu Dong

Sun 11/2

8:50 am-10:00 am

1 stop16h 10m

$915

SeattleShanghai

SEA - PVG

SEAPVG

Seattle/Tacoma Intl

Fri 10/24

12:50 pm-9:45 am

1 stop29h 55m

Shanghai Pu Dong

Mon 11/3

11:20 am-9:00 am

1 stop13h 40m

$915

SeattleShanghai

SEA - PVG

SEAPVG

Seattle/Tacoma Intl

Sat 10/25

12:45 pm-9:45 am

2 stops30h 00m

Shanghai Pu Dong

Thu 10/30

8:50 am-10:00 am

1 stop16h 10m

$920

SeattleShanghai

SEA - PVG

SEAPVG

Seattle/Tacoma Intl

Sun 10/26

12:45 pm-9:45 am

2 stops30h 00m

Shanghai Pu Dong

Sun 11/2

2:00 pm-10:00 am

1 stop35h 00m

$920

SeattleShanghai

SEA - SHA

SEASHA

Seattle/Tacoma Intl

Sat 2/28

12:10 am-9:45 am

1 stop17h 35m

Shanghai Hongqiao Intl

Sun 3/22

10:55 am-2:55 pm

1 stop19h 00m

$925

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/17

Showing 1-10 of 48 results
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Best time to book a flight from Seattle to Shanghai

Have a flexible travel schedule? Discover the best time to fly to Shanghai 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.

Cheapflights Insights

Everything you need to know about your flight from Seattle to Shanghai

How far ahead should I book a flight from Seattle to Shanghai?

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Shanghai. Price data was last updated on September 12, 2025.

Booking 16 days in advance of your planned departure date is, on average, the best time to get cheap flights from Seattle to Shanghai. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Seattle to Shanghai?

Currently, September is the cheapest month in which you can book a flight from Seattle to Shanghai (average of $1,076). Flying from Seattle to Shanghai in June is currently the most expensive (average of $1,573). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SEA to SHA?

Find hourly flight availability from Seattle to Shanghai. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 17, 2025.

It’s typically best to fly out from Seattle to Shanghai in the morning. Doing so could potentially save you 19% on the flight price compared to flying at noon, which is usually more expensive.

What is the cheapest day to fly from Seattle to Shanghai?

Use this chart to determine the cheapest time to fly round-trip from Seattle to Shanghai. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Seattle to Shanghai flight should consider departing on Wednesday afternoons when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Shanghai

Get insights into the airlines that provide service to Shanghai. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Shanghai. Reviews last updated September 17, 2025.
Read reviews from past customers who have flown Korean Air, ANA, and Asiana Airlines from Seattle to Shanghai. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very good
1,140 reviews

Entertainment

8.2

Overall

8.4

Boarding

8.5

Comfort

8.3

Crew

8.7

Food

8.1

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Korean Air
8.4
Very good
1,140 reviews
Korean Air
8.4
Very good
1,140 reviews

Entertainment

8.2

Overall

8.4

Boarding

8.5

Comfort

8.3

Crew

8.7

Food

8.1

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
ANA
8.4
Very good
964 reviews
Korean Air
8.4
Very good
1,140 reviews

Entertainment

8.2

Overall

8.4

Boarding

8.5

Comfort

8.3

Crew

8.7

Food

8.1

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Asiana Airlines
8.2
Very good
481 reviews
Korean Air
8.4
Very good
1,140 reviews

Entertainment

8.2

Overall

8.4

Boarding

8.5

Comfort

8.3

Crew

8.7

Food

8.1

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Delta
8.0
Very good
7,961 reviews
Korean Air
8.4
Very good
1,140 reviews

Entertainment

8.2

Overall

8.4

Boarding

8.5

Comfort

8.3

Crew

8.7

Food

8.1

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Air Canada
7.1
Good
10,000 reviews
Korean Air
8.4
Very good
1,140 reviews

Entertainment

8.2

Overall

8.4

Boarding

8.5

Comfort

8.3

Crew

8.7

Food

8.1

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.

Related info for your journey

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

  • What airport do you fly from for flights from Seattle to Shanghai?

    Seattle/Tacoma Intl (SEA) is the airport you will fly out of if you book a flight from Seattle to Shanghai. You should not have trouble finding flights to Shanghai from Seattle/Tacoma Intl; the airport handles an average of 1 outbound flight to Shanghai per day. You should also have plenty of airline options to choose from since 8 airlines have flights from the Seattle airport to Shanghai. It is only a 11.4 mi journey to Seattle/Tacoma Intl (SEA) from Seattle’s city center.

  • How long is the flight from Seattle to Shanghai?

    Hainan Airlines, Philippine Airlines, and Korean Air can get you from Seattle to Shanghai in just under 17h 40m. Your travel time can differ by up to 15h 55m. Airlines will cover a distance of 5719 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Seattle to Shanghai round-trip?

    Currently priced at $457, Hainan Airlines will fly you from Seattle to Shanghai and back. In addition to Hainan Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Delta and Air Canada - these airlines can fly you to your destination from $528 and $719, respectively. You may be able to fly from Seattle to Shanghai for 59% less than the average price by searching for these airlines.

  • Where are the most common layover locations when flying from Seattle to Shanghai?

    Of the flights from Seattle to Shanghai that have layovers, most of them stop in Taipei City. Taipei City is followed by Seoul in terms of the most popular layover location on flights from Seattle to Shanghai.

  • What are some popular things to do or see while on a layover in Taipei City?

    Most Taipei City visitors opt to spend their time experiencing Taipei 101, Shilin Night Market, and Raohe Street Night Market. Taipei 101, Shilin Night Market and Raohe Street Night Market are located about 21.0 mi, 18.3 mi, and 21.6 mi, respectively from Taipei City Taiwan Taoyuan Intl if you are interested in checking them out. Those on a layover in Taipei City in need of a rental car can book one at Taipei City Taiwan Taoyuan Intl for about $70.

  • What are some popular points of interest to see during a layover in Seoul?

    The majority of Seoul visitors spend their time at Dongdaemun Market, Lotte World, and Bukchon Hanok Village. Travelers on a layover in Seoul can visit Dongdaemun Market, Lotte World, and Bukchon Hanok Village, by traveling 31.6 mi, 35.7 mi, and 30.6 mi, respectively after landing at Incheon Intl. Travelers can book a car rental at Incheon Intl for about $62 per day to make their sightseeing more efficient.

  • Where are the least popular layover locations for Seattle to Shanghai flights?

    Seattle to Shanghai flights have a layover in Tokyo the least frequently.

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

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

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

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

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

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

  • What is the cheapest month to book a flight from Seattle to Shanghai?

    Currently, September is the cheapest month in which you can book a flight from Seattle to Shanghai (average of $1,076). Flying from Seattle to Shanghai in June is currently the most expensive (average of $1,573). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top 8 airlines flying from Seattle to Shanghai

Discover the top 8 airlines that operate flights from Seattle to Shanghai. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
Hainan AirlinesCheapest$457Average$982FlexibilityNo cancel feeOn-time61%
DeltaCheapest$528Average$1,213FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$719Average$1,200FlexibilityNo cancel feeOn-time67%
China AirlinesCheapest$825Average$1,085FlexibilityNo cancel feeOn-time70%
Asiana AirlinesCheapest$841Average$1,035FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$906Average$1,041FlexibilityNo cancel feeOn-time81%
ANACheapest$993Average$1,076FlexibilityNo cancel feeOn-time80%
EVA AirCheapest$1,031Average$1,370FlexibilityNo cancel feeOn-time74%

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