What is the cheapest airline that flies from Seattle/Tacoma Intl to Hainan?

Hainan Airlines is the most popular carrier operating from Seattle/Tacoma Intl 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.

$549 Cheap Flights from Seattle to Hainan in 2026

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Find the cheapest flights from Seattle to Hainan

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:50 am - 1:10 am

SEA

SYX

27h 20m

2 stops

6:45 am - 4:01 pm

SYX

SEA

24h 16m

2 stops

$922Multiple Airlines

Tue, Sep 8 - Thu, Oct 8

7:07 pm - 1:10 am

SEA

SYX

39h 03m

2 stops

6:45 am - 4:01 pm

SYX

SEA

24h 16m

2 stops

$929Multiple Airlines

Mon, Sep 7 - Thu, Oct 8

6:50 am - 1:35 pm

SEA

SYX

39h 45m

2 stops

6:45 am - 10:57 pm

SYX

SEA

31h 12m

2 stops

$936Multiple Airlines

Fri, Sep 11 - Thu, Oct 8

7:56 pm - 11:30 am

SEA

SYX

24h 34m

2 stops

11:10 am - 8:16 am

SYX

SEA

36h 06m

3 stops

$1,282Multiple Airlines

Tue, Sep 8 - Thu, Oct 8

4:59 pm - 6:20 pm

SEA

SYX

34h 21m

2 stops

3:40 pm - 8:16 am

SYX

SEA

31h 36m

3 stops

$1,356Multiple Airlines

Thu, Sep 10 - Thu, Oct 8

12:25 pm - 12:45 pm

SEA

SYX

33h 20m

1 stop

9:45 pm - 9:00 am

SYX

SEA

50h 15m

2 stops

$1,376Multiple Airlines

Tue, Sep 8 - Thu, Oct 8

11:05 am - 10:50 am

SEA

SYX

32h 45m

1 stop

11:10 pm - 9:00 am

SYX

SEA

48h 50m

2 stops

$1,377Hainan Airlines

Thu, Sep 10 - Thu, Oct 8

12:10 am - 8:30 pm

SEA

SYX

29h 20m

2 stops

7:20 pm - 4:10 pm

SYX

SEA

35h 50m

3 stops

$1,424Multiple Airlines

Fri, Sep 11 - Thu, Oct 8

12:25 pm - 8:30 pm

SEA

SYX

17h 05m

1 stop

9:45 pm - 3:15 pm

SYX

SEA

32h 30m

2 stops

$1,426Multiple Airlines

Sat, Sep 12 - Thu, Oct 8

12:10 am - 1:10 am

SEA

SYX

34h 00m

3 stops

9:45 pm - 3:15 pm

SYX

SEA

32h 30m

2 stops

$1,429Multiple Airlines

Sun, Sep 6 - Thu, Oct 8

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleSanya

SEA - SYX

SEASYX

Seattle/Tacoma Intl

Tue 9/8

6:50 am-1:10 am

2 stops27h 20m

Sanya Phoenix Intl

Thu 10/8

6:45 am-4:01 pm

2 stops24h 16m

$922

SeattleSanya

SEA - SYX

SEASYX

Seattle/Tacoma Intl

Mon 9/7

7:07 pm-1:10 am

2 stops39h 03m

Sanya Phoenix Intl

Thu 10/8

6:45 am-4:01 pm

2 stops24h 16m

$929

SeattleSanya

SEA - SYX

SEASYX

Seattle/Tacoma Intl

Fri 9/11

6:50 am-1:35 pm

2 stops39h 45m

Sanya Phoenix Intl

Thu 10/8

6:45 am-10:57 pm

2 stops31h 12m

$936

SeattleSanya

SEA - SYX

SEASYX

Seattle/Tacoma Intl

Tue 9/8

7:56 pm-11:30 am

2 stops24h 34m

Sanya Phoenix Intl

Thu 10/8

11:10 am-8:16 am

3 stops36h 06m

$1,282

SeattleSanya

SEA - SYX

SEASYX

Seattle/Tacoma Intl

Thu 9/10

4:59 pm-6:20 pm

2 stops34h 21m

Sanya Phoenix Intl

Thu 10/8

3:40 pm-8:16 am

3 stops31h 36m

$1,356

SeattleSanya

SEA - SYX

SEASYX

Seattle/Tacoma Intl

Tue 9/8

12:25 pm-12:45 pm

1 stop33h 20m

Sanya Phoenix Intl

Thu 10/8

9:45 pm-9:00 am

2 stops50h 15m

$1,376

SeattleSanya

SEA - SYX

SEASYX

Seattle/Tacoma Intl

Thu 9/10

11:05 am-10:50 am

1 stop32h 45m

Sanya Phoenix Intl

Thu 10/8

11:10 pm-9:00 am

2 stops48h 50m

$1,377

SeattleSanya

SEA - SYX

SEASYX

Seattle/Tacoma Intl

Fri 9/11

12:10 am-8:30 pm

2 stops29h 20m

Sanya Phoenix Intl

Thu 10/8

7:20 pm-4:10 pm

3 stops35h 50m

$1,424

Quickest round-trip

SeattleSanya

SEA - SYX

SEASYX

Seattle/Tacoma Intl

Sat 9/12

12:25 pm-8:30 pm

1 stop17h 05m

Sanya Phoenix Intl

Thu 10/8

9:45 pm-3:15 pm

2 stops32h 30m

$1,426

SeattleSanya

SEA - SYX

SEASYX

Seattle/Tacoma Intl

Sun 9/6

12:10 am-1:10 am

3 stops34h 00m

Sanya Phoenix Intl

Thu 10/8

9:45 pm-3:15 pm

2 stops32h 30m

$1,429

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 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

Prices

Airlines

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

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

Fastest flight time	27h 20m
Direct flights	None

The fastest flight from Seattle to Hainan takes 27h 20m

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

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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 66 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.