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Find cheap flights from Washington to Australia from $604

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 14/8. 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
Sat 29/6
Sat 6/7

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In the last 7 days, travellers have searched 42,686,544 times on KAYAK, and here's why:

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Good to know

Low season

April

High season

December

Cheapest flight

$604
Best time to beat the crowds (5% less expensive on average)
Most popular time to fly (22% more expensive on average)
Flight from Seattle 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 return 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 return flight deals

17/11Sun
1 stopAir Canada
28h 25mSEA-SYD
24/11Sun
1 stopAir Canada
16h 56mSYD-SEA
$1,104
3/11Sun
1 stopUnited Airlines
22h 23mSEA-SYD
25/11Mon
1 stopUnited Airlines
17h 52mSYD-SEA
$1,129
4/11Mon
2 stopsDelta
28h 10mSEA-SYD
25/11Mon
2 stopsDelta
24h 27mSYD-SEA
$1,268
2/11Sat
1 stopDelta
42h 36mSEA-SYD
22/11Fri
2 stopsDelta
24h 27mSYD-SEA
$1,280
27/7Sat
1 stop
37h 55mPDX-MEL
11/9Wed
1 stop
22h 00mMEL-PDX
$1,436
28/6Fri
2 stops
35h 10mSEA-SYD
5/7Fri
1 stop
22h 25mSYD-SEA
$1,483
11/10Fri
1 stopPhilippine Airlines
40h 05mSEA-SYD
20/10Sun
1 stopPhilippine Airlines
25h 45mSYD-SEA
$1,501
16/10Wed
1 stopPhilippine Airlines
40h 05mSEA-SYD
23/10Wed
1 stopPhilippine Airlines
25h 45mSYD-SEA
$1,566
15/9Sun
1 stopSingapore Airlines
35h 15mSEA-PER
7/10Mon
1 stopSingapore Airlines
30h 35mPER-SEA
$1,593
15/9Sun
1 stopSingapore Airlines
27h 55mSEA-PER
7/10Mon
2 stopsSingapore Airlines
36h 49mPER-SEA
$1,866

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Recent one-way flight deals

14/8Wed
1 stop
27h 11mSEA-SYD
$604
30/10Wed
1 stop
27h 36mSEA-SYD
$645
26/10Sat
1 stopHawaiian Airlines
18h 05mSEA-SYD
$1,042
5/6Wed
1 stopHawaiian Airlines
18h 10mSEA-SYD
$1,051
17/11Sun
1 stopPhilippine Airlines
40h 10mSEA-SYD
$1,161
21/9Sat
2 stopsCathay Pacific
46h 36mPDX-SYD
$1,238
19/9Thu
2 stopsCathay Pacific
34h 40mPDX-BNE
$1,241
13/8Tue
2 stopsFiji Airways
24h 00mSEA-SYD
$1,274
31/7Wed
2 stopsFiji Airways
35h 25mSEA-SYD
$1,403
10/10Thu
2 stopsPhilippine Airlines
50h 56mPDX-SYD
$1,543

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Last minute flights from Washington to Australia

Last minute flight, train and bus deals

2/6Sun
multi-stopUnited Airlines
22h 30mSEA-SYD
16/6Sun
multi-stopUnited Airlines
17h 20mSYD-SEA
$1,129
2/6Sun
multi-stopUnited Airlines
26h 50mSEA-SYD
16/6Sun
multi-stopUnited Airlines
23h 22mSYD-SEA
$1,154
31/5Fri
multi-stopUnited Airlines
22h 06mPDX-SYD
4/6Tue
multi-stopUnited Airlines
21h 31mSYD-PDX
$1,223
31/5Fri
multi-stopUnited Airlines
30h 00mPDX-SYD
4/6Tue
multi-stopUnited Airlines
24h 55mSYD-PDX
$1,229
2/6Sun
multi-stopDelta
25h 45mSEA-SYD
16/6Sun
multi-stopDelta
27h 40mSYD-SEA
$1,262
31/5Fri
multi-stopUnited Airlines
18h 18mSEA-SYD
7/6Fri
multi-stopUnited Airlines
25h 21mSYD-SEA
$1,299
31/5Fri
multi-stopHawaiian Airlines
18h 10mSEA-SYD
30/6Sun
multi-stopHawaiian Airlines
17h 05mSYD-SEA
$2,108
2/6Sun
multi-stop
27h 45mSEA-BNE
9/6Sun
multi-stop
16h 57mBNE-SEA
$3,094
2/6Sun
multi-stop
27h 00mSEA-BNE
9/6Sun
multi-stop
47h 20mBNE-SEA
$3,269
2/6Sun
multi-stopAir New Zealand
36h 05mSEA-BNE
4/6Tue
multi-stopAir New Zealand
43h 40mBNE-SEA
$3,485

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Flights to Australia

Return flight deals:

Australia - Washington

Cabin classes: