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Find cheap flights from Washington to Australia from $410

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 9/19. 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 7/6
Sat 7/13

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In the last 7 days travelers have searched 43,995,393 times on KAYAK, and here is why:

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Good to know

Low season

April

High season

December

Cheapest flight

$410
Best time to beat the crowds with an average 15% drop in price.
Most popular time to fly with an average 29% increase in price.
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 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

7/26Fri
1 stop
36h 55mSEA-SYD
8/2Fri
2 stops
23h 15mSYD-SEA
$869
11/1Fri
1 stopHawaiian Airlines
18h 05mSEA-SYD
11/17Sun
1 stopHawaiian Airlines
18h 55mSYD-SEA
$883
10/27Sun
1 stopPhilippine Airlines
37h 45mSEA-MEL
11/3Sun
1 stopPhilippine Airlines
28h 15mMEL-SEA
$950
11/17Sun
1 stopPhilippine Airlines
40h 10mSEA-SYD
11/24Sun
1 stopPhilippine Airlines
25h 40mSYD-SEA
$951
11/18Mon
1 stopDelta
25h 50mSEA-SYD
12/9Mon
1 stopDelta
22h 35mSYD-SEA
$1,026
11/18Mon
2 stopsDelta
30h 15mSEA-SYD
11/25Mon
1 stopDelta
20h 13mSYD-SEA
$1,030
9/15Sun
1 stopSingapore Airlines
37h 25mSEA-PER
10/7Mon
1 stopSingapore Airlines
41h 20mPER-SEA
$1,055
11/13Wed
2 stopsUnited Airlines
29h 27mSEA-SYD
11/19Tue
1 stopUnited Airlines
17h 52mSYD-SEA
$1,110
10/16Wed
2 stopsUnited Airlines
33h 00mPDX-SYD
11/10Sun
1 stopUnited Airlines
23h 45mSYD-PDX
$1,114
9/15Sun
1 stopSingapore Airlines
37h 25mSEA-PER
10/6Sun
1 stopSingapore Airlines
46h 35mPER-SEA
$1,147

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Recent one-way flight deals

9/19Thu
1 stop
38h 00mSEA-SYD
$410
8/3Sat
2 stops
31h 53mPDX-MEL
$413
10/27Sun
1 stopPhilippine Airlines
37h 45mSEA-MEL
$761
9/19Thu
2 stopsHawaiian Airlines
40h 35mSEA-SYD
$772
10/27Sun
3 stopsHawaiian Airlines
51h 55mSEA-MEL
$789
9/21Sat
2 stopsChina Southern
36h 45mPDX-SYD
$836
8/13Tue
2 stopsFiji Airways
25h 00mSEA-SYD
$845
11/3Sun
2 stopsChina Southern
49h 44mPDX-MEL
$847
7/31Wed
2 stopsFiji Airways
24h 00mSEA-SYD
$929
10/14Mon
2 stopsPhilippine Airlines
49h 16mSEA-PER
$1,000

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Last minute flights from Washington to Australia

Last minute flight, train and bus deals

6/7Fri
multi-stopHawaiian Airlines
18h 10mSEA-SYD
6/14Fri
multi-stopHawaiian Airlines
17h 05mSYD-SEA
$1,153
6/11Tue
multi-stopHawaiian Airlines
40h 15mSEA-SYD
6/20Thu
multi-stopHawaiian Airlines
41h 55mSYD-SEA
$1,259
6/11Tue
multi-stopUnited Airlines
44h 03mSEA-SYD
6/20Thu
multi-stopUnited Airlines
25h 26mSYD-SEA
$1,310
6/7Fri
multi-stopUnited Airlines
26h 17mSEA-SYD
6/14Fri
multi-stopUnited Airlines
49h 32mSYD-SEA
$1,459
6/9Sun
multi-stop
37h 05mSEA-SYD
6/11Tue
multi-stop
45h 05mSYD-SEA
$1,644
6/9Sun
multi-stop
37h 10mPDX-SYD
6/11Tue
multi-stop
36h 37mSYD-PDX
$1,690
6/11Tue
multi-stopDelta
20h 05mSEA-SYD
6/20Thu
multi-stopDelta
22h 13mSYD-SEA
$2,028
6/11Tue
multi-stopAir New Zealand
25h 25mSEA-MEL
6/22Sat
multi-stopAir New Zealand
31h 30mMEL-SEA
$2,040
6/9Sun
multi-stopAir New Zealand
23h 20mSEA-SYD
6/11Tue
multi-stopAir New Zealand
27h 25mSYD-SEA
$2,050
6/11Tue
multi-stopDelta
20h 05mSEA-SYD
6/22Sat
multi-stopDelta
22h 13mSYD-SEA
$2,594

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Flights to Australia