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Find cheap flights from Washington to Australia from $477

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Washington to Australia departing on 8/4. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Sat 6/29
Sat 7/6

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In the last 7 days travelers have searched 42,686,544 times on KAYAK, and here is why:

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Good to know

Low season

April

High season

December

Cheapest flight

$477
Best time to beat the crowds with an average 15% drop in price.
Most popular time to fly with an average 28% increase in price.
Flight from Portland to Sydney

FAQs for booking flights from Washington to Australia

  • How does KAYAK find such low prices on flights from Washington to Australia?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington to Australia.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington to Australia?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Australia from Washington is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Washington to Australia?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Australia with an airline and back to Washington with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington to Australia?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Australia from Washington up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Book cheap flights from Washington to Australia

Recent round-trip flight deals

11/17Sun
1 stopAir Canada
28h 25mSEA-SYD
11/24Sun
1 stopAir Canada
16h 56mSYD-SEA
$731
9/10Tue
1 stopUnited Airlines
18h 15mSEA-SYD
9/18Wed
1 stopUnited Airlines
18h 26mSYD-SEA
$752
7/21Sun
2 stopsUnited Airlines
37h 30mSEA-SYD
7/28Sun
1 stopUnited Airlines
31h 22mSYD-SEA
$753
10/22Tue
2 stopsDelta
28h 16mPDX-SYD
11/3Sun
2 stopsDelta
28h 41mSYD-PDX
$820
7/29Mon
2 stopsDelta
24h 05mSEA-SYD
8/14Wed
2 stopsDelta
31h 34mSYD-SEA
$840
7/27Sat
1 stop
37h 55mPDX-MEL
9/11Wed
1 stop
22h 00mMEL-PDX
$951
8/12Mon
2 stopsAmerican Airlines
37h 06mPDX-SYD
10/16Wed
2 stopsAmerican Airlines
24h 37mSYD-PDX
$964
6/28Fri
2 stops
35h 10mSEA-SYD
7/5Fri
1 stop
22h 25mSYD-SEA
$982
10/11Fri
1 stopPhilippine Airlines
40h 05mSEA-SYD
10/20Sun
1 stopPhilippine Airlines
25h 45mSYD-SEA
$994
6/26Wed
2 stopsAmerican Airlines
23h 44mSEA-MEL
7/20Sat
2 stopsAmerican Airlines
28h 15mMEL-SEA
$1,436

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Recent one-way flight deals

8/4Sun
1 stop
37h 10mPDX-SYD
$477
8/4Sun
2 stops
36h 00mPDX-SYD
$485
8/4Sun
2 stops
45h 20mPDX-AVV
$516
6/5Wed
1 stopHawaiian Airlines
18h 10mSEA-SYD
$696
6/5Wed
2 stopsHawaiian Airlines
40h 15mSEA-SYD
$772
9/19Thu
2 stopsCathay Pacific
34h 40mPDX-BNE
$822
8/13Tue
2 stopsFiji Airways
24h 00mSEA-SYD
$844
7/31Wed
2 stopsFiji Airways
35h 25mSEA-SYD
$929
8/29Thu
1 stopChina Airlines
40h 05mSEA-SYD
$1,019
8/12Mon
1 stopChina Airlines
40h 05mSEA-SYD
$1,048

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Last minute flights from Washington to Australia

Last minute flight, train and bus deals

6/2Sun
multi-stopUnited Airlines
22h 30mSEA-SYD
6/16Sun
multi-stopUnited Airlines
19h 00mSYD-SEA
$759
6/2Sun
multi-stopUnited Airlines
22h 06mPDX-SYD
6/18Tue
multi-stopUnited Airlines
21h 31mSYD-PDX
$759
6/2Sun
multi-stopUnited Airlines
26h 50mSEA-SYD
6/16Sun
multi-stopUnited Airlines
23h 22mSYD-SEA
$764
6/2Sun
multi-stopUnited Airlines
32h 55mPDX-SYD
6/18Tue
multi-stopUnited Airlines
16h 52mSYD-PDX
$764
6/1Sat
multi-stop
53h 55mPDX-SYD
6/22Sat
multi-stop
21h 00mSYD-PDX
$1,300
5/31Fri
multi-stopHawaiian Airlines
18h 10mSEA-SYD
6/30Sun
multi-stopHawaiian Airlines
17h 05mSYD-SEA
$1,396
6/4Tue
multi-stop
38h 05mPDX-MEL
6/11Tue
multi-stop
41h 52mMEL-PDX
$1,623
6/2Sun
multi-stopAir New Zealand
24h 20mPDX-SYD
6/4Tue
multi-stopAir New Zealand
23h 38mSYD-PDX
$2,089
6/2Sun
multi-stopAir New Zealand
36h 05mSEA-BNE
6/4Tue
multi-stopAir New Zealand
43h 40mBNE-SEA
$2,308
6/3Mon
multi-stopAir Canada
22h 35mPDX-BNE
6/14Fri
multi-stopAir Canada
21h 45mBNE-PDX
$2,350

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Flights to Australia