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Cheap flights from Seattle to Sanya from $612

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Sanya departing on 6/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Seattle to Sanya

Cheap round-trip flights

Enter your travel dates to find the best prices.
Hainan Airlines Logo
10:00 am - 1:00 am
SEA
-
SYX
47h 00m
2 stops
Hainan Airlines Logo
10:00 pm - 9:00 am
SYX
-
SEA
26h 00m
2 stops
$5,835Hainan Airlines
Sat, Feb 28 - Mon, Mar 9
Hainan Airlines Logo
10:00 am - 6:10 pm
SEA
-
SYX
40h 10m
1 stop
Hainan Airlines Logo
10:00 pm - 9:00 am
SYX
-
SEA
26h 00m
2 stops
$6,151Hainan Airlines
Sat, Feb 28 - Mon, Mar 9
Hainan Airlines Logo
10:00 am - 11:25 pm
SEA
-
SYX
21h 25m
1 stop
Hainan Airlines Logo
5:30 pm - 9:00 am
SYX
-
SEA
30h 30m
1 stop
$6,469Hainan Airlines
Sat, Feb 28 - Mon, Mar 9

Hainan Airlines flights from Seattle to Sanya

Our best Hainan Airlines deals on Seattle to Sanya flight tickets
Hainan Airlines
Feb 28
SEA10:00 amSeattle/Tacoma Intl
47h 00m
2 stops
SYX1:00 amSanya Phoenix Intl
Mar 9
SYX10:00 pmSanya Phoenix Intl
26h 00m
2 stops
SEA9:00 amSeattle/Tacoma Intl
$5,835
Hainan Airlines
Feb 28
SEA10:00 amSeattle/Tacoma Intl
40h 10m
1 stop
SYX6:10 pmSanya Phoenix Intl
Mar 9
SYX10:00 pmSanya Phoenix Intl
26h 00m
2 stops
SEA9:00 amSeattle/Tacoma Intl
$6,151
Hainan Airlines
Feb 28
SEA10:00 amSeattle/Tacoma Intl
21h 25m
1 stop
SYX11:25 pmSanya Phoenix Intl
Mar 9
SYX5:30 pmSanya Phoenix Intl
30h 30m
1 stop
SEA9:00 amSeattle/Tacoma Intl
$6,469

momondo Fare Finder

 
Customize your flight search to find flights from Seattle to Sanya 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 January 19, 2026.
Use the filters below to find and compare flights from Seattle to Sanya that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleSanya

SEA - SYX

SEASYX

Seattle/Tacoma Intl

Sat 2/28

10:00 am-1:00 am

2 stops47h 00m

Sanya Phoenix Intl

Mon 3/9

10:00 pm-9:00 am

2 stops26h 00m

$5,835

SeattleSanya

SEA - SYX

SEASYX

Seattle/Tacoma Intl

Sat 2/28

10:00 am-6:10 pm

1 stop40h 10m

Sanya Phoenix Intl

Mon 3/9

10:00 pm-9:00 am

2 stops26h 00m

$6,151

SeattleSanya

SEA - SYX

SEASYX

Seattle/Tacoma Intl

Sat 2/28

10:00 am-11:25 pm

1 stop21h 25m

Sanya Phoenix Intl

Mon 3/9

5:30 pm-9:00 am

1 stop30h 30m

$6,469

SeattleSanya

SEA - SYX

SEASYX

Seattle/Tacoma Intl

Sun 6/7

12:55 am-12:45 pm

2 stops44h 50m

$612

SeattleSanya

SEA - SYX

SEASYX

Seattle/Tacoma Intl

Mon 6/8

12:55 am-12:45 pm

2 stops44h 50m

$615

SeattleSanya

SEA - SYX

SEASYX

Seattle/Tacoma Intl

Sat 6/6

4:30 pm-12:45 pm

2 stops53h 15m

$660

SeattleSanya

SEA - SYX

SEASYX

Seattle/Tacoma Intl

Thu 6/11

7:20 am-12:45 pm

3 stops38h 25m

$676

SeattleSanya

SEA - SYX

SEASYX

Seattle/Tacoma Intl

Sun 6/7

12:55 am-11:50 pm

3 stops31h 55m

$689

SeattleSanya

SEA - SYX

SEASYX

Seattle/Tacoma Intl

Mon 6/8

12:55 am-11:50 pm

3 stops31h 55m

$696

SeattleSanya

SEA - SYX

SEASYX

Seattle/Tacoma Intl

Tue 6/9

12:55 am-8:55 pm

3 stops29h 00m

$702

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
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When to book flights from Seattle to Sanya

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to Sanya according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Seattle to Sanya (SEA to SYX) flight deals and tips

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

Fastest flight time

25h 27m

Direct flights

None
The fastest flight from Seattle to Sanya takes 25h 27m
There are no direct flights from Seattle to Sanya. There are no popular flight routes from Seattle to Sanya.
Search flight deals

  • How far is Seattle/Tacoma Intl to Sanya Phoenix Intl by plane?

    Seattle/Tacoma Intl and Sanya Phoenix Intl are 6867.1 mi apart from one another. Flights usually cover this in 25h 27m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Sanya Phoenix Intl Airport?

    Prices for flights from Seattle/Tacoma Intl Airport to Sanya Phoenix Intl Airport are updated daily.

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Sanya Phoenix Intl Airport.

  • What documentation or ID do you need to fly to Sanya Phoenix Intl Airport?

    The required travel and health documents for your Sanya Phoenix Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Sanya Phoenix Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • How do I get Price Alerts for flights from Seattle to Sanya?

    Price Alerts will notify you by email when the price for flights to Sanya from Seattle decreases. To activate this, select your desired travel dates and search for offers. While browsing through offers you’ll see the Price Alert widget toggle. Click it to turn on notifications.

  • How can I save money on flights from Seattle to Sanya with momondo?

    By using tools like our “Price Calendar”, you can see the best day to fly round-trip for your travels. Our “Price Forecast” tool uses AI to predict whether you should purchase or hold off on booking for potentially cheaper prices. Explore shows you all flight options from a city or airport to build your own unique adventure. The Discover blog also provides valuable insights for saving money while booking your experience. After searching you can toggle on “Price Alerts” to track prices for your desired flight and book at the ideal moment.

  • How does momondo find its flight prices?

    We show prices from over 700+ competitors with a single click. With options from airlines and OTAs from across our 30 international markets, we are able to show you a diverse range of deals to create your adventure.

Why use momondo?

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

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

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

All flight searches from Seattle to Sanya on momondo can be filtered to show those which offer flexible booking policies.

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

momondo helps you find the best flight between Seattle and Sanya by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

If you are not ready to book a flight from Seattle to Sanya now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Sanya and let you know when they change.

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