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South Pacific

$294+ Cheap flights from Washington to South Pacific

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/28. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SYD
Jan 13 — Jan 201
Tue 1/13
Tue 1/20
1 adult, Economy
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Cheap flight deals from Washington to South Pacific

Cheapest flights from Washington to South Pacific
Explore the most affordable flight options available from Washington to South Pacific. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 14, 2025.

This United Airlines deal was found by Cheapflights users on 12/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/1511:59 pmSEA - BNE
2 stops37h 31mUnited Airlines
Sun 12/2811:40 amBNE - SEA
1 stop18h 47mUnited Airlines
Deal found 12/14$874
This United Airlines deal was found by Cheapflights users on 12/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/235:54 pmSEA - BNE
1 stop19h 36mUnited Airlines
Tue 12/3011:40 amBNE - SEA
1 stop31h 19mUnited Airlines
Deal found 12/14$876
This oojo deal was found by Cheapflights users on 12/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/222:50 pmSEA - AKL
2 stops36h 15mQantas Airways
Fri 1/91:20 pmAKL - SEA
1 stop26h 58mQantas Airways
Deal found 12/14$894
This Qantas Airways deal was found by Cheapflights users on 12/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/296:00 amSEA - AKL
1 stop30h 55mQantas Airways
Sat 1/103:50 pmAKL - SEA
1 stop24h 32mQantas Airways
Deal found 12/13$922
This Gurufare deal was found by Cheapflights users on 12/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/123:55 pmPDX - AKL
1 stop20h 15mAir New Zealand
Tue 2/178:30 pmAKL - PDX
1 stop19h 00mAir New Zealand
Deal found 12/11$968
This KAYAK deal was found by Cheapflights users on 12/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/142:58 pmPDX - AKL
1 stop18h 07mMultiple Airlines
Thu 2/1910:00 pmAKL - PDX
1 stop28h 27mMultiple Airlines
Deal found 12/11$1,005
This United Airlines deal was found by Cheapflights users on 12/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/307:12 pmSEA - MEL
1 stop19h 48mUnited Airlines
Mon 2/211:30 amMEL - SEA
2 stops28h 42mUnited Airlines
Deal found 12/13$1,011
This Qantas Airways deal was found by Cheapflights users on 12/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qantas Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/294:26 pmPDX - SYD
1 stop19h 59mQantas Airways
Tue 1/137:15 pmSYD - PDX
2 stops37h 20mQantas Airways
Deal found 12/12$1,012
This United Airlines deal was found by Cheapflights users on 12/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/165:00 amSEA - MEL
2 stops33h 30mUnited Airlines
Sat 1/1711:30 amMEL - SEA
1 stop23h 59mUnited Airlines
Deal found 12/14$1,016
This Delta deal was found by Cheapflights users on 12/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/1710:25 amSEA - MEL
1 stop26h 35mDelta
Wed 1/1410:10 amMEL - SEA
1 stop21h 47mDelta
Deal found 12/14$1,018
This United Airlines deal was found by Cheapflights users on 12/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/135:00 amPDX - MEL
2 stops34h 00mUnited Airlines
Mon 12/291:00 pmMEL - PDX
1 stop24h 48mUnited Airlines
Deal found 12/12$1,021
This Delta deal was found by Cheapflights users on 12/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/1711:15 amSEA - MEL
2 stops25h 45mDelta
Fri 1/2310:10 amMEL - SEA
2 stops23h 50mDelta
Deal found 12/14$1,023

Find flight deals from Washington to South Pacific

Keep the following information in mind while searching for Washington to South Pacific flight deals. Data was last updated December 14, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$628
(Kiwi.com)

One-way from

$294
(Kiwi.com)

Popular in

December

Cheapest in

August

Average price

$1,523

Good round-trip deal

$1,104 or less

Good one-way deal

$576 or less
Provider with most accurate pricing for Seattle/Tacoma Intl-Sydney Kingsford Smith flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Sydney Kingsford Smith flights.
Search Deals
From Washington to South Pacific
Search Deals
One-way flight from Washington to South Pacific
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($189 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($42 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from Washington to South Pacific.
Search Deals
Price to beat on a one-way flight from Washington to South Pacific.
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington to South Pacific 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, Cheapflights users made 2,558,603 searches. Data last updated December 14, 2025.
Use the filters below to find and compare flights from Washington to South Pacific that are best for you.

Fly from

Washington

Fly to

South Pacific

Route

Depart

Return

Price

PortlandAuckland

PDX - AKL

PDXAKL

Portland

Tue 2/17

7:05 pm-4:50 pm

2 stops24h 45m

Auckland Intl

Tue 3/3

2:00 pm-6:30 pm

1 stop25h 30m

$758

PortlandAuckland

PDX - AKL

PDXAKL

Portland

Tue 1/27

9:50 am-5:20 pm

2 stops34h 30m

Auckland Intl

Tue 2/3

6:15 am-2:40 pm

2 stops29h 25m

$782

SeattleBrisbane

SEA - BNE

SEABNE

Seattle/Tacoma Intl

Tue 2/24

9:55 am-8:45 am

1 stop28h 50m

Brisbane

Tue 3/3

10:45 am-7:16 pm

1 stop26h 31m

$796

SeattleBrisbane

SEA - BNE

SEABNE

Seattle/Tacoma Intl

Sun 1/11

8:00 pm-8:45 am

1 stop18h 45m

Brisbane

Sun 1/18

10:45 am-9:31 am

1 stop16h 46m

$796

SeattleBrisbane

SEA - BNE

SEABNE

Seattle/Tacoma Intl

Sat 2/14

5:50 am-8:45 am

1 stop32h 55m

Brisbane

Fri 2/20

10:45 am-2:31 pm

1 stop21h 46m

$796

SeattleBrisbane

SEA - BNE

SEABNE

Seattle/Tacoma Intl

Tue 2/24

8:00 pm-2:20 pm

2 stops24h 20m

Brisbane

Tue 3/3

10:45 am-7:16 pm

1 stop26h 31m

$812

PortlandAuckland

PDX - AKL

PDXAKL

Portland

Tue 1/27

3:22 pm-9:55 am

1 stop21h 33m

Auckland Intl

Wed 3/4

3:50 pm-1:25 pm

1 stop18h 35m

$849

SeattleBrisbane

SEA - BNE

SEABNE

Seattle/Tacoma Intl

Fri 2/20

11:36 am-5:00 am

2 stops23h 24m

Brisbane

Sun 3/1

5:10 pm-6:53 pm

1 stop19h 43m

$851

PortlandAuckland

PDX - AKL

PDXAKL

Portland

Tue 2/17

1:02 pm-8:35 am

1 stop22h 33m

Auckland Intl

Tue 3/3

2:35 pm-4:10 pm

1 stop22h 35m

$861

PortlandAuckland

PDX - AKL

PDXAKL

Portland

Thu 1/22

6:22 pm-9:55 am

1 stop18h 33m

Auckland Intl

Tue 2/10

1:20 pm-1:21 pm

1 stop21h 01m

$861

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/12

Showing 1-10 of 60 results
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Best time to book a flight from Washington to South Pacific

Have a flexible travel schedule? Discover the best time to fly to South Pacific from Washington with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Washington to South Pacific

What is the cheapest month to book a flight from State of Washington to South Pacific?

Currently, August is the cheapest month in which you can book a flight from State of Washington to South Pacific (average of $157). Flying from State of Washington to South Pacific in October is currently the most expensive (average of $729). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from WA to SP?

Find hourly flight availability from Washington to South Pacific. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 14, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 16% on flights from State of Washington to South Pacific by exploring options for tickets in the evening.

What is the cheapest day to fly from State of Washington to South Pacific?

Use this chart to determine the cheapest time to fly round-trip from Washington to South Pacific. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their State of Washington to South Pacific flight should consider departing on Thursday mornings when fares are most often at their lowest. Saturday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Related info for your journey

Find useful and relevant information for your journey from Washington to South Pacific. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from State of Washington to South Pacific?

    Air Canada, Qantas Airways, and American Airlines can get you from State of Washington to South Pacific in just under 19h 24m. Your travel time can differ by up to 5h 21m. The distance from State of Washington to South Pacific is about 4796 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from State of Washington to South Pacific one-way?

    The cheapest airline one-way is ANA, with whom users have recently found tickets for as low as $253. However, be on the lookout for offers from Air Canada and Qantas Airways, as they are both options that can get you from State of Washington to South Pacific for a low price.

  • Can I find deals for flights from Washington to South Pacific that include hotel bookings?

    Yes. In addition to deals on Washington to South Pacific flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Washington to South Pacific?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington to South Pacific.

  • Can I find deals for business class flights from Washington to South Pacific?

    Yes. Cheapflights offers flight deals from Washington to South Pacific by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from State of Washington to South Pacific?

    Currently, August is the cheapest month in which you can book a flight from State of Washington to South Pacific (average of $157). Flying from State of Washington to South Pacific in October is currently the most expensive (average of $729). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Washington to South Pacific

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from Washington to South Pacific

Discover the top 10 airlines that operate flights from Washington to South Pacific. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$97Average$1,309FlexibilityNo cancel feeOn-time75%
DeltaCheapest$157Average$1,171FlexibilityNo cancel feeOn-timeN/A
ANACheapest$583Average$615FlexibilityNo cancel feeOn-time80%
Air CanadaCheapest$620Average$1,268FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$667Average$1,272FlexibilityNo cancel feeOn-time69%
Air Tahiti NuiCheapest$715Average$860FlexibilityNo cancel feeOn-time73%
Philippine AirlinesCheapest$758Average$921FlexibilityNo cancel feeOn-time60%
American AirlinesCheapest$759Average$1,070FlexibilityNo cancel feeOn-time71%
Qantas AirwaysCheapest$789Average$1,233FlexibilityNo cancel feeOn-time74%
Hawaiian AirlinesCheapest$813Average$1,210FlexibilityNo cancel feeOn-time85%

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