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Find cheap flights from Washington to Australia from $738

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 2/6. 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
Mon 27/5
Mon 3/6

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In the last 7 days, travellers have searched 44,335,567 times on KAYAK, and here's why:

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Good to know

Low season

June

High season

December

Cheapest flight

$738
Best time to beat the crowds but there is an average 9% increase in price.
Most popular time to fly (20% 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

15/9Sun
1 stopSingapore Airlines
22h 40mSEA-PER
7/10Mon
1 stopSingapore Airlines
34h 00mPER-SEA
$1,538
4/6Tue
2 stopsHawaiian Airlines
40h 15mSEA-SYD
25/10Fri
1 stopHawaiian Airlines
18h 30mSYD-SEA
$1,546
7/8Wed
1 stopAir Canada
23h 10mSEA-SYD
7/11Thu
1 stopAir Canada
16h 56mSYD-SEA
$1,579
2/7Tue
1 stop
25h 37mSEA-MEL
29/8Thu
2 stops
30h 30mMEL-SEA
$1,588
15/9Sun
1 stopUnited Airlines
18h 15mSEA-SYD
30/9Mon
2 stopsUnited Airlines
28h 45mSYD-SEA
$1,657
8/9Sun
1 stopUnited Airlines
18h 15mSEA-SYD
17/9Tue
2 stopsUnited Airlines
28h 50mSYD-SEA
$1,662
15/9Sun
1 stopDelta
28h 05mSEA-SYD
30/9Mon
1 stopDelta
22h 15mSYD-SEA
$1,693
8/9Sun
1 stop
38h 00mSEA-SYD
17/9Tue
1 stop
22h 50mSYD-SEA
$1,703
9/9Mon
2 stopsDelta
28h 10mSEA-SYD
18/9Wed
1 stopDelta
23h 42mSYD-SEA
$1,711
20/10Sun
1 stopAir Canada
19h 15mSEA-SYD
26/10Sat
1 stopAir Canada
17h 40mSYD-SEA
$1,746

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Recent one-way flight deals

2/6Sun
1 stop
37h 05mSEA-SYD
$738
29/5Wed
2 stops
35h 10mSEA-SYD
$747
31/5Fri
1 stopHawaiian Airlines
18h 10mSEA-SYD
$1,065
25/8Sun
1 stopSingapore Airlines
22h 40mSEA-PER
$1,162
6/10Sun
1 stopPhilippine Airlines
37h 50mSEA-MEL
$1,165
16/5Thu
2 stopsHawaiian Airlines
40h 25mSEA-SYD
$1,181
5/10Sat
1 stopSingapore Airlines
37h 55mSEA-MEL
$1,414
26/8Mon
1 stopQatar Airways
35h 05mSEA-PER
$1,423
4/10Fri
2 stopsPhilippine Airlines
62h 15mSEA-MEL
$1,622
26/8Mon
3 stopsQatar Airways
54h 45mSEA-PER
$1,829

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Search by price

Last minute flights from Washington to Australia

Last minute flight, train and bus deals

2/5Thu
multi-stop
29h 25mSEA-MEL
16/5Thu
multi-stop
25h 01mMEL-SEA
$2,184
2/5Thu
multi-stop
29h 25mSEA-MEL
18/5Sat
multi-stop
24h 05mMEL-SEA
$2,237
30/4Tue
multi-stop
27h 20mSEA-SYD
2/5Thu
multi-stop
23h 00mSYD-SEA
$2,392
2/5Thu
multi-stopQatar Airways
38h 00mSEA-MEL
18/5Sat
multi-stopQatar Airways
46h 15mMEL-SEA
$2,571
29/4Mon
multi-stopFiji Airways
61h 15mSEA-SYD
29/5Wed
multi-stopFiji Airways
24h 35mSYD-SEA
$2,701
29/4Mon
multi-stopAsiana Airlines
24h 10mSEA-SYD
29/5Wed
multi-stopAsiana Airlines
44h 15mSYD-SEA
$3,181
28/4Sun
multi-stopUnited Airlines
18h 17mSEA-SYD
19/5Sun
multi-stopUnited Airlines
18h 47mSYD-SEA
$3,200
2/5Thu
multi-stopFiji Airways
30h 25mSEA-MEL
16/5Thu
multi-stopFiji Airways
35h 15mMEL-SEA
$3,371
30/4Tue
multi-stopUnited Airlines
24h 13mGEG-SYD
4/5Sat
multi-stopUnited Airlines
28h 30mSYD-GEG
$3,719
2/5Thu
multi-stopQatar Airways
31h 15mSEA-MEL
16/5Thu
multi-stopQatar Airways
32h 30mMEL-SEA
$3,774

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Flights to Australia

Return flight deals:

Australia - Washington

Cabin classes: