$525 Cheap Flights from Seattle (SEA) to Sanya (SYX)

View $525 flight on Thu, Nov 13, 2025Opens in a new window

Popular airlines from Seattle-Tacoma International Airport (SEA) to Sanya (SYX-Phoenix Intl.)

Cheap Flights from Seattle to Sanya (SEA-SYX)

Prices were available within the past 7 days and start at $525 for one-way flights and $829 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Thu, Jan 8 - Thu, Jan 22
SEA
Seattle
SYX
Sanya
$829 Roundtrip, found 6 days ago
$829
Roundtrip
found 6 days ago
Select Delta flight, departing Thu, Jan 8 from Seattle to Sanya, returning Thu, Jan 22, priced at $829 found 6 days ago
Delta
Sat, Jan 17 - Thu, Jan 22
SEA
Seattle
SYX
Sanya
$849 Roundtrip, found 6 days ago
$849
Roundtrip
found 6 days ago
Select Delta flight, departing Sat, Jan 17 from Seattle to Sanya, returning Thu, Jan 22, priced at $849 found 6 days ago
Delta
Sat, Jan 17 - Sat, Jan 24
SEA
Seattle
SYX
Sanya
$869 Roundtrip, found 6 days ago
$869
Roundtrip
found 6 days ago
Select Delta flight, departing Sat, Jan 17 from Seattle to Sanya, returning Sat, Jan 24, priced at $869 found 6 days ago
Alaska Airlines
Tue, Dec 2 - Sun, Dec 14
SEA
Seattle
SYX
Sanya
$893 Roundtrip, found 2 days ago
$893
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Tue, Dec 2 from Seattle to Sanya, returning Sun, Dec 14, priced at $893 found 2 days ago
Delta
Thu, Nov 13 - Thu, Nov 27
SEA
Seattle
SYX
Sanya
$903 Roundtrip, found 12 hours ago
$903
Roundtrip
found 12 hours ago
Select Delta flight, departing Thu, Nov 13 from Seattle to Sanya, returning Thu, Nov 27, priced at $903 found 12 hours ago
Delta
Mon, Nov 10 - Wed, Nov 19
SEA
Seattle
SYX
Sanya
$904 Roundtrip, found 3 days ago
$904
Roundtrip
found 3 days ago
Select Delta flight, departing Mon, Nov 10 from Seattle to Sanya, returning Wed, Nov 19, priced at $904 found 3 days ago
Alaska Airlines
Tue, Dec 2 - Tue, Dec 16
SEA
Seattle
SYX
Sanya
$913 Roundtrip, found 6 days ago
$913
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Tue, Dec 2 from Seattle to Sanya, returning Tue, Dec 16, priced at $913 found 6 days ago
Hawaiian Airlines
Mon, Nov 17 - Wed, Dec 3
SEA
Seattle
SYX
Sanya
$955 Roundtrip, found 2 days ago
$955
Roundtrip
found 2 days ago
Select Hawaiian Airlines flight, departing Mon, Nov 17 from Seattle to Sanya, returning Wed, Dec 3, priced at $955 found 2 days ago
Hainan Airlines
Tue, Nov 11 - Mon, Nov 24
SEA
Seattle
SYX
Sanya
$975 Roundtrip, found 12 hours ago
$975
Roundtrip
found 12 hours ago
Select Hainan Airlines flight, departing Tue, Nov 11 from Seattle to Sanya, returning Mon, Nov 24, priced at $975 found 12 hours ago
Air China
Mon, Nov 10 - Tue, Nov 25
SEA
Seattle
SYX
Sanya
$1,114 Roundtrip, found 3 days ago
$1,114
Roundtrip
found 3 days ago
Select Air China flight, departing Mon, Nov 10 from Seattle to Sanya, returning Tue, Nov 25, priced at $1,114 found 3 days ago

Alternative airports near Sanya

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Phoenix Intl. SYX. Cheapest and Closest option available. Average driving time to city center is 14 minutes. Flights from $1,020
SYX
Phoenix Intl.
CheapestClosest
Average driving time to city center14 min
Flights from $1,020
Flights from Seattle (SEA) to Sanya (SYX)
Origin airport
Seattle - Tacoma Intl.
Destination airport
Phoenix Intl.
Airlines serving
Air China, China Eastern Airlines, Hainan Airlines
Roundtrip price
$829
Distance
6880 mi

Seattle to Sanya Flights

The cheapest times to fly from Seattle to Sanya

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Seattle to Sanya are during the month of January. You can find some of the cheapest flights from Seattle to Sanya with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Seattle to Sanya

Sunday is one of the best days to book for cheap flights from Seattle to Sanya: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Seattle to Sanya

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Seattle to Sanya in 2025. You can also book with separate airlines for your outbound and return journeys, from $525 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Seattle to Sanya flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Seattle to Sanya airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Seattle - Tacoma Intl. Airport (SEA) to Phoenix Intl. Airport (SYX) cost?
Lock in a cheap one-way flight from $525 or cheap return flight from $829 from Seattle - Tacoma Intl. Airport (SEA) to Phoenix Intl. Airport (SYX) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Seattle - Tacoma Intl. Airport (SEA) to Phoenix Intl. Airport (SYX)?
The cheapest month to fly from SEA to SYX is January, when demand is low. Off-peak months are often when you'll find cheap fares for travel between these airports.
What is the cheapest airline that flies from Seattle - Tacoma Intl. Airport (SEA) to Phoenix Intl. Airport (SYX)?
To find the cheapest airline that'll fly you from SEA to SYX, use Expedia's filter tool. Customize your search based on what matters most to you, such as preferred carriers and cabin class. You can then sort your results by "Price (lowest to highest)" to discover the cheapest flight right away.
How many flights per day from Seattle - Tacoma Intl. Airport (SEA) to Phoenix Intl. Airport (SYX)?
You'll have to hop on a flight with a layover when traveling from Seattle - Tacoma Intl. Airport (SEA) to Phoenix Intl. Airport (SYX). Direct flights don't operate daily on this route. However, just filter your search to include one or two stops to discover the best option for your trip.
What day of the week has the most flights from SEA to SYX?
Friday is typically the busiest day for flights, while Tuesday is often the quietest.* Just remember that flight schedules can vary depending on a number of factors, including the time of year and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Seattle - Tacoma Intl. Airport (SEA) to Phoenix Intl. Airport (SYX)?
To avoid possible delays on the Seattle - Tacoma Intl. Airport (SEA) to Phoenix Intl. Airport (SYX) route, fly before 3 PM. Departures after this hour are 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Seattle - Tacoma Intl. Airport (SEA) to Phoenix Intl. Airport (SYX) last-minute?
Waiting until right before your break to book a flight from SEA to SYX generally means paying more. While you may come across some last-minute offers, they aren't always guaranteed. Keep your travel plans flexible for the best chance of scoring a bargain.
Is it cheaper to book a SEA to SYX flight and hotel package?
Compared with arranging flights and hotels separately, booking a SEA to SYX flight and hotel package with Expedia could lead to significant savings. Better yet, managing everything in one place will take the stress out of travel planning. Just pick your flights and choose from our wide range of hotels, then tailor your trip with extras like tours, activities and car rentals.
Can I cancel or change the date of my flight from Seattle - Tacoma Intl. Airport (SEA) to Phoenix Intl. Airport (SYX)?
Usually, it's possible to reschedule or cancel your SEA to SYX flight. However, if the booking was made more than 24 hours ago, additional charges may apply. Check your airline's policies in your itinerary to see what changes are possible and whether any costs are involved. You'll also find more details on our Customer Service portal.

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*Available to One Key members.