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.

$443 Cheap Flights from Seattle to Hainan in 2026

Find the cheapest flights from Seattle to Hainan

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

12:25 pm - 8:30 pmSEA Seattle/Tacoma Intl-SYX Sanya Phoenix Intl

17h 05m1 stop Hong Kong Intl

1:45 pm - 9:00 amSYX Sanya Phoenix Intl-SEA Seattle/Tacoma Intl

34h 15m2 stops Hong Kong Intl Beijing Capital

$1,119Multiple Airlines

Sat, Sep 5 - Fri, Sep 11

7:18 am - 1:10 amSEA Seattle/Tacoma Intl-SYX Sanya Phoenix Intl

26h 52m2 stops San Francisco Shanghai Pu Dong

5:30 pm - 2:21 pmSYX Sanya Phoenix Intl-SEA Seattle/Tacoma Intl

35h 51m2 stops Shanghai Pu Dong San Francisco

$1,126Multiple Airlines

Sat, Sep 5 - Fri, Sep 11

1:15 am - 8:10 pmSEA Seattle/Tacoma Intl-SYX Sanya Phoenix Intl

27h 55m3 stops Taipei City Taiwan Taoyuan Intl Manila Ninoy Aquino Intl Xiamen Gaoqi Intl

1:45 pm - 9:00 amSYX Sanya Phoenix Intl-SEA Seattle/Tacoma Intl

34h 15m2 stops Hong Kong Intl Beijing Capital

$1,168Multiple Airlines

Fri, Sep 4 - Fri, Sep 11

2:10 am - 12:45 pmSEA Seattle/Tacoma Intl-SYX Sanya Phoenix Intl

43h 35m2 stops Taipei City Taiwan Taoyuan Intl Hong Kong Intl

1:45 pm - 7:00 pmSYX Sanya Phoenix Intl-SEA Seattle/Tacoma Intl

20h 15m2 stops Hong Kong Intl Taipei City Taiwan Taoyuan Intl

$1,169Multiple Airlines

Thu, Aug 27 - Tue, Sep 1

12:25 pm - 8:30 pmSEA Seattle/Tacoma Intl-SYX Sanya Phoenix Intl

17h 05m1 stop Hong Kong Intl

2:00 pm - 9:00 amSYX Sanya Phoenix Intl-SEA Seattle/Tacoma Intl

34h 00m1 stop Beijing Capital

$1,278Multiple Airlines

Sat, Sep 5 - Fri, Sep 11

1:55 am - 8:10 pmSEA Seattle/Tacoma Intl-SYX Sanya Phoenix Intl

27h 15m2 stops Taipei City Taiwan Taoyuan Intl Xiamen Gaoqi Intl

10:40 pm - 7:40 pmSYX Sanya Phoenix Intl-SEA Seattle/Tacoma Intl

36h 00m3 stops Guangzhou Baiyun Hong Kong Intl Taipei City Taiwan Taoyuan Intl

$1,450Multiple Airlines

Thu, Aug 27 - Tue, Sep 1

10:30 am - 12:45 pmSEA Seattle/Tacoma Intl-SYX Sanya Phoenix Intl

35h 15m3 stops Calgary Tokyo Narita Hong Kong Intl

10:40 pm - 7:40 pmSYX Sanya Phoenix Intl-SEA Seattle/Tacoma Intl

36h 00m3 stops Guangzhou Baiyun Hong Kong Intl Taipei City Taiwan Taoyuan Intl

$1,558Multiple Airlines

Fri, Aug 28 - Tue, Sep 1

12:10 am - 2:10 pmSEA Seattle/Tacoma Intl-SYX Sanya Phoenix Intl

23h 00m2 stops Incheon Intl Jinan

1:45 pm - 10:20 amSYX Sanya Phoenix Intl-SEA Seattle/Tacoma Intl

35h 35m1 stop Hong Kong Intl

$1,883Multiple Airlines

Thu, Aug 27 - Tue, Sep 1

8:15 am - 10:45 amSEA Seattle/Tacoma Intl-SYX Sanya Phoenix Intl

34h 30m2 stops Vancouver Intl Beijing Capital

6:50 pm - 9:57 pmSYX Sanya Phoenix Intl-SEA Seattle/Tacoma Intl

43h 07m2 stops Beijing Capital Vancouver Intl

$2,586Multiple Airlines

Sat, Dec 19 - Sat, Jan 2

6:00 am - 11:30 pmSEA Seattle/Tacoma Intl-SYX Sanya Phoenix Intl

25h 30m2 stops Los Angeles Shanghai Pu Dong

6:30 am - 3:49 pmSYX Sanya Phoenix Intl-SEA Seattle/Tacoma Intl

25h 19m2 stops Shanghai Pu Dong Los Angeles

$2,604Multiple Airlines

Sun, Dec 20 - Fri, Jan 1

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Hainan Airlines flights from Seattle to Hainan

Our best Hainan Airlines deals on Seattle to Hainan flight tickets

Hainan Airlines

Dec 19

SEA10:20 amSeattle/Tacoma Intl

41h 05m

1 stop

SYX7:25 pmSanya Phoenix Intl

Jan 1

SYX7:30 pmSanya Phoenix Intl

28h 50m

1 stop

SEA8:20 amSeattle/Tacoma Intl

$2,911

Hainan Airlines

Dec 19

SEA10:20 amSeattle/Tacoma Intl

34h 50m

1 stop

SYX1:10 pmSanya Phoenix Intl

Jan 3

SYX11:05 pmSanya Phoenix Intl

49h 15m

2 stops

SEA8:20 amSeattle/Tacoma Intl

$3,066

Hainan Airlines

Dec 19

SEA10:20 amSeattle/Tacoma Intl

46h 40m

2 stops

SYX1:00 amSanya Phoenix Intl

Jan 1

SYX3:30 pmSanya Phoenix Intl

32h 50m

1 stop

SEA8:20 amSeattle/Tacoma Intl

$3,096

Air China flights from Seattle to Hainan

Our best Air China deals on Seattle to Hainan flight tickets

Air China

Dec 20

SEA10:10 amSeattle/Tacoma Intl

32h 35m

2 stops

SYX10:45 amSanya Phoenix Intl

Jan 3

SYX12:30 pmSanya Phoenix Intl

21h 52m

2 stops

SEA6:22 pmSeattle/Tacoma Intl

$3,329

Air China

Dec 20

SEA10:10 amSeattle/Tacoma Intl

32h 35m

2 stops

SYX10:45 amSanya Phoenix Intl

Jan 2

SYX11:55 amSanya Phoenix Intl

22h 27m

2 stops

SEA6:22 pmSeattle/Tacoma Intl

$3,363

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleSanya

SEA Seattle/Tacoma Intl - SYX Sanya Phoenix Intl

SEASYX

Seattle/Tacoma Intl

Sat 9/5

12:25 pm-8:30 pm

1 stop17h 05m

Sanya Phoenix Intl

Fri 9/11

1:45 pm-9:00 am

2 stops34h 15m

$1,119

SeattleSanya

SEA Seattle/Tacoma Intl - SYX Sanya Phoenix Intl

SEASYX

Seattle/Tacoma Intl

Sat 9/5

7:18 am-1:10 am

2 stops26h 52m

Sanya Phoenix Intl

Fri 9/11

5:30 pm-2:21 pm

2 stops35h 51m

$1,126

SeattleSanya

SEA Seattle/Tacoma Intl - SYX Sanya Phoenix Intl

SEASYX

Seattle/Tacoma Intl

Fri 9/4

1:15 am-8:10 pm

3 stops27h 55m

Sanya Phoenix Intl

Fri 9/11

1:45 pm-9:00 am

2 stops34h 15m

$1,168

SeattleSanya

SEA Seattle/Tacoma Intl - SYX Sanya Phoenix Intl

SEASYX

Seattle/Tacoma Intl

Thu 8/27

2:10 am-12:45 pm

2 stops43h 35m

Sanya Phoenix Intl

Tue 9/1

1:45 pm-7:00 pm

2 stops20h 15m

$1,169

SeattleSanya

SEA Seattle/Tacoma Intl - SYX Sanya Phoenix Intl

SEASYX

Seattle/Tacoma Intl

Sat 9/5

12:25 pm-8:30 pm

1 stop17h 05m

Sanya Phoenix Intl

Fri 9/11

2:00 pm-9:00 am

1 stop34h 00m

$1,278

SeattleSanya

SEA Seattle/Tacoma Intl - SYX Sanya Phoenix Intl

SEASYX

Seattle/Tacoma Intl

Thu 8/27

1:55 am-8:10 pm

2 stops27h 15m

Sanya Phoenix Intl

Tue 9/1

10:40 pm-7:40 pm

3 stops36h 00m

$1,450

SeattleSanya

SEA Seattle/Tacoma Intl - SYX Sanya Phoenix Intl

SEASYX

Seattle/Tacoma Intl

Fri 8/28

10:30 am-12:45 pm

3 stops35h 15m

Sanya Phoenix Intl

Tue 9/1

10:40 pm-7:40 pm

3 stops36h 00m

$1,558

SeattleSanya

SEA Seattle/Tacoma Intl - SYX Sanya Phoenix Intl

SEASYX

Seattle/Tacoma Intl

Thu 8/27

12:10 am-2:10 pm

2 stops23h 00m

Sanya Phoenix Intl

Tue 9/1

1:45 pm-10:20 am

1 stop35h 35m

$1,883

SeattleSanya

SEA Seattle/Tacoma Intl - SYX Sanya Phoenix Intl

SEASYX

Seattle/Tacoma Intl

Sat 12/19

8:15 am-10:45 am

2 stops34h 30m

Sanya Phoenix Intl

Sat 1/2

6:50 pm-9:57 pm

2 stops43h 07m

$2,586

Quickest round-trip

SeattleSanya

SEA Seattle/Tacoma Intl - SYX Sanya Phoenix Intl

SEASYX

Seattle/Tacoma Intl

Sun 12/20

6:00 am-11:30 pm

2 stops25h 30m

Sanya Phoenix Intl

Fri 1/1

6:30 am-3:49 pm

2 stops25h 19m

$2,604

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first

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 airline that flies from Seattle/Tacoma Intl to Hainan?

Cathay Pacific is the most popular carrier operating from Seattle/Tacoma Intl to Hainan

Cheap Seattle to Hainan flight deals and tips

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

Fastest flight time	17h 05m
Direct flights	None

The fastest flight from Seattle to Hainan takes 17h 05m

There are no direct flights from Seattle to Hainan. There are no popular flight routes from Seattle to Hainan.

Search flight deals

Frequently asked questions about flying from Seattle to Hainan

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.

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 Airlines	PriceFrom $1,098	Free Cancellation	Rating 8.3 68 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.