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Cheap flights from Seattle to Sanya from $1,246

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 Sanya departing on 11/4. 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
1 adult, Economy, 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.
Cathay Pacific Logo
10:50 am - 10:30 am
SEA
-
SYX
31h 40m
1 stop
Cathay Pacific Logo
8:50 pm - 9:10 am
SYX
-
SEA
28h 20m
1 stop
$1,246Cathay Pacific
Wed, Nov 4 - Sun, Nov 8
Multiple Airlines Logo
11:30 pm - 9:05 pm
SEA
-
SYX
29h 35m
2 stops
Multiple Airlines Logo
10:05 pm - 6:10 pm
SYX
-
SEA
36h 05m
2 stops
$1,327Multiple Airlines
Sat, Nov 21 - Sat, Nov 28
Multiple Airlines Logo
12:10 am - 10:25 pm
SEA
-
SYX
30h 15m
3 stops
Multiple Airlines Logo
11:30 am - 5:30 pm
SYX
-
SEA
22h 00m
2 stops
$1,416Multiple Airlines
Fri, Nov 20 - Sat, Nov 28
Multiple Airlines Logo
10:00 am - 6:10 pm
SEA
-
SYX
40h 10m
1 stop
Multiple Airlines Logo
10:05 pm - 6:10 pm
SYX
-
SEA
36h 05m
2 stops
$1,465Multiple Airlines
Sat, Nov 21 - Sat, Nov 28
Multiple Airlines Logo
12:10 am - 10:25 pm
SEA
-
SYX
30h 15m
3 stops
Multiple Airlines Logo
11:30 am - 6:10 pm
SYX
-
SEA
46h 40m
3 stops
$1,498Multiple Airlines
Fri, Nov 20 - Sat, Nov 28
Cathay Pacific Logo
11:45 am - 8:30 pm
SEA
-
SYX
17h 45m
1 stop
Cathay Pacific Logo
9:45 pm - 10:05 am
SYX
-
SEA
27h 20m
1 stop
$1,858Cathay Pacific
Wed, Sep 30 - Sun, Oct 4
China Eastern Logo
7:15 am - 1:10 am
SEA
-
SYX
26h 55m
2 stops
China Eastern Logo
2:45 pm - 4:47 pm
SYX
-
SEA
41h 02m
2 stops
$2,735China Eastern
Wed, Sep 30 - Sun, Oct 4

Cathay Pacific flights from Seattle to Sanya

Our best Cathay Pacific deals on Seattle to Sanya flight tickets
Cathay Pacific
Sep 12
SEA12:25 pmSeattle/Tacoma Intl
17h 05m
1 stop
SYX8:30 pmSanya Phoenix Intl
Sep 20
SYX9:45 pmSanya Phoenix Intl
27h 20m
1 stop
SEA10:05 amSeattle/Tacoma Intl
$933
Cathay Pacific
Sep 9
SEA12:25 pmSeattle/Tacoma Intl
30h 45m
1 stop
SYX10:10 amSanya Phoenix Intl
Sep 20
SYX9:45 pmSanya Phoenix Intl
27h 20m
1 stop
SEA10:05 amSeattle/Tacoma Intl
$1,153
Cathay Pacific
Nov 4
SEA10:50 amSeattle/Tacoma Intl
31h 40m
1 stop
SYX10:30 amSanya Phoenix Intl
Nov 8
SYX8:50 pmSanya Phoenix Intl
28h 20m
1 stop
SEA9:10 amSeattle/Tacoma Intl
$1,246

Hainan Airlines flights from Seattle to Sanya

Our best Hainan Airlines deals on Seattle to Sanya flight tickets
Hainan Airlines
Sep 10
SEA11:05 amSeattle/Tacoma Intl
32h 45m
1 stop
SYX10:50 amSanya Phoenix Intl
Sep 23
SYX8:55 pmSanya Phoenix Intl
27h 10m
1 stop
SEA9:05 amSeattle/Tacoma Intl
$1,414
Hainan Airlines
Sep 8
SEA11:00 amSeattle/Tacoma Intl
46h 50m
2 stops
SYX12:50 amSanya Phoenix Intl
Sep 23
SYX8:55 pmSanya Phoenix Intl
27h 10m
1 stop
SEA9:05 amSeattle/Tacoma Intl
$1,424
Hainan Airlines
Sep 8
SEA11:00 amSeattle/Tacoma Intl
46h 50m
2 stops
SYX12:50 amSanya Phoenix Intl
Sep 23
SYX11:10 pmSanya Phoenix Intl
24h 55m
2 stops
SEA9:05 amSeattle/Tacoma Intl
$1,425

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 June 4, 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

Cheapest round-trip

SeattleSanya

SEA - SYX

SEASYX

Seattle/Tacoma Intl

Wed 11/4

10:50 am-10:30 am

1 stop31h 40m

Sanya Phoenix Intl

Sun 11/8

8:50 pm-9:10 am

1 stop28h 20m

$1,246

SeattleSanya

SEA - SYX

SEASYX

Seattle/Tacoma Intl

Sat 11/21

11:30 pm-9:05 pm

2 stops29h 35m

Sanya Phoenix Intl

Sat 11/28

10:05 pm-6:10 pm

2 stops36h 05m

$1,327

SeattleSanya

SEA - SYX

SEASYX

Seattle/Tacoma Intl

Fri 11/20

12:10 am-10:25 pm

3 stops30h 15m

Sanya Phoenix Intl

Sat 11/28

11:30 am-5:30 pm

2 stops22h 00m

$1,416

SeattleSanya

SEA - SYX

SEASYX

Seattle/Tacoma Intl

Sat 11/21

10:00 am-6:10 pm

1 stop40h 10m

Sanya Phoenix Intl

Sat 11/28

10:05 pm-6:10 pm

2 stops36h 05m

$1,465

SeattleSanya

SEA - SYX

SEASYX

Seattle/Tacoma Intl

Fri 11/20

12:10 am-10:25 pm

3 stops30h 15m

Sanya Phoenix Intl

Sat 11/28

11:30 am-6:10 pm

3 stops46h 40m

$1,498
Quickest round-trip

SeattleSanya

SEA - SYX

SEASYX

Seattle/Tacoma Intl

Wed 9/30

11:45 am-8:30 pm

1 stop17h 45m

Sanya Phoenix Intl

Sun 10/4

9:45 pm-10:05 am

1 stop27h 20m

$1,858

SeattleSanya

SEA - SYX

SEASYX

Seattle/Tacoma Intl

Wed 9/30

7:15 am-1:10 am

2 stops26h 55m

Sanya Phoenix Intl

Sun 10/4

2:45 pm-4:47 pm

2 stops41h 02m

$2,735

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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

17h 45m

Direct flights

None
The fastest flight from Seattle to Sanya takes 17h 45m
There are no direct flights from Seattle to Sanya. There are no popular flight routes from Seattle to Sanya.
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Frequently asked questions about flying from Seattle to Sanya

  • 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 17h 45m, 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.

Frequently asked questions about flying from Seattle to Sanya

  • 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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