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Cheap flights from Seattle to Hainan from $1,352

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Hainan departing on 3/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
China Eastern Logo
7:20 am - 11:45 amSEA-SYX
37h 25m2 stops
China Eastern Logo
6:30 am - 5:00 pmSYX-SEA
25h 30m2 stops
$1,352China Eastern
Find Deal
Sun, Mar 8 - Thu, Mar 12

momondo Fare Finder

 
Customize your flight search to find flights from Seattle to Hainan 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, momondo users made 832,500 searches. Data last updated October 20, 2025.
Use the filters below to find and compare flights from Seattle to Hainan that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleSanya

SEA - SYX

SEASYX

Seattle/Tacoma Intl

Sun 3/8

7:20 am-11:45 am

2 stops37h 25m

Sanya Phoenix Intl

Thu 3/12

6:30 am-5:00 pm

2 stops25h 30m

$1,352

SeattleSanya

SEA - SYX

SEASYX

Seattle/Tacoma Intl

Sat 1/10

7:55 pm-9:05 pm

2 stops33h 10m

$2,459

SeattleSanya

SEA - SYX

SEASYX

Seattle/Tacoma Intl

Mon 1/12

7:40 pm-9:05 pm

2 stops33h 25m

$2,469

SeattleSanya

SEA - SYX

SEASYX

Seattle/Tacoma Intl

Thu 1/8

7:55 pm-10:30 am

2 stops22h 35m

$2,476

SeattleSanya

SEA - SYX

SEASYX

Seattle/Tacoma Intl

Thu 1/8

3:10 pm-10:30 am

3 stops27h 20m

$2,611

SeattleSanya

SEA - SYX

SEASYX

Seattle/Tacoma Intl

Mon 1/12

7:40 pm-9:05 pm

3 stops33h 25m

$2,647

SeattleSanya

SEA - SYX

SEASYX

Seattle/Tacoma Intl

Sat 1/10

11:05 pm-3:40 pm

3 stops48h 35m

$2,813

SeattleSanya

SEA - SYX

SEASYX

Seattle/Tacoma Intl

Thu 1/8

10:05 am-1:55 pm

1 stop35h 50m

$3,177

SeattleSanya

SEA - SYX

SEASYX

Seattle/Tacoma Intl

Sun 1/11

12:10 am-9:05 pm

2 stops28h 55m

$3,641

SeattleSanya

SEA - SYX

SEASYX

Seattle/Tacoma Intl

Sun 1/11

12:10 am-9:05 pm

3 stops28h 55m

$3,685

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 11 resultsSorted by cheapest first
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See travel insights to Hainan from

How to get the cheapest flight ticket from Seattle to Hainan

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest Seattle/Tacoma Intl to Hainan flight route?

Fly from Seattle/Tacoma Intl to Haikou Meilan Intl for the best Seattle/Tacoma Intl - Hainan flight prices

What cabin class options are available on Seattle/Tacoma Intl to Hainan flights?

There is only 1 cabin class available to choose from on Seattle/Tacoma Intl to Hainan flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Seattle to Hainan flights?

You could potentially save up to 52% on your flight if you consider stops on a Seattle to Hainan flight.

Cheap Seattle to Hainan flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Hainan

Direct flights

None
There are no direct flights from Seattle to Hainan. There are no popular flight routes from Seattle to Hainan.
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  • When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Hainan?

    Prices for flights from Seattle/Tacoma Intl Airport to Hainan are refreshed on a daily basis.

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport to Hainan?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Seattle/Tacoma Intl Airport to Hainan.

  • What documentation or ID do you need to fly to Hainan?

    The travel and health documents required for your trip to Hainan can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Hainan. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular plane model from Seattle to Hainan?

Best airlines flying from Seattle to Hainan

Compare and see reviews for airlines that fly from Seattle to Hainan with momondo
Airline
Rating
Free Cancellation
Price
Hainan AirlinesPriceFrom $730Free CancellationRating
8.2
46 reviews
Search Hainan Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Hainan?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Seattle to Hainan. momondo saves you time and could save you money on your trip.

Can I find flights from Seattle to Hainan with flexible booking policies on momondo?

Flights from Seattle to Hainan with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Seattle to Hainan?

Once you have performed a search for Seattle to Hainan flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Seattle to Hainan right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Hainan, momondo offers a useful price alert feature which will track prices for flights to Hainan from Seattle and alert you when they change.

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