$380 Find Cheap Flights from Washington to Australia

1 adult

KAYAK searches hundreds of travel sites at once for deals on flights to Australia

Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 22% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Useful Info
Useful Info

Good to know

Low seasonMay
High seasonDecember
Cheapest flight$380
Best time to beat the crowds with an average 9% drop in price.
Most popular time to fly with an average 32% 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 from Washington to Australia 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 from Washington to Australia with an airline and back 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 from Washington to Australia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest day to fly to Australia?

    Based on KAYAK data, the cheapest day to fly to Australia is Tuesday where round-trip tickets can be as cheap as $1,078. On the other hand, the most expensive day to fly is Thursday, where round-trip prices are $1,156 on average.

  • What is the cheapest time of day to fly to Australia?

    The cheapest time of day to fly to Australia is generally at night, when round-trip flights cost $1,078 on average. Morning departures are around 1% more expensive than evening flights, on average. The most expensive time of day to fly to Australia is generally in the morning, which is peak travel time and where the average cost of a ticket is $1,152.

  • What is the cheapest month to fly from Washington to Australia?

    The cheapest month for flights from Washington to Australia is March, when tickets cost $1,030 (return) on average. On the other hand, the most expensive months are December and January, when the average cost of round-trip tickets is $1,503 and $1,237 respectively.

  • How far in advance should I book a flight from Washington to Australia?

    To get a below average price on the flight from Washington to Australia, you should book around 5 weeks before departure. For the absolute cheapest price, our data suggests you should book 24 weeks before departure.

  • How long is the flight to Australia?

    An average nonstop flight from Washington to Australia takes 27h 28m, covering a distance of 7915 miles. The shortest route is Portland (PDX) to Brisbane (BNE) with an average flight time of 17h 55m.

  • What are the most popular destinations in Australia?

    Based on KAYAK flight searches, the most popular destination is Melbourne (45% of total searches to Australia). The next most popular destinations are Sydney (30%) and Brisbane (6%). Searches for flights to Cairns (4%), to Perth (3%) and to Coolangatta (3%) are also popular.

Book cheap flights from Washington to Australia

Recent round-trip flight deals

10/19Sun
1 stopAir Canada
24h 35mSEA-SYD
10/26Sun
1 stopAir Canada
22h 06mSYD-SEA
$876
10/19Sun
1 stopAir Canada
24h 35mSEA-SYD
10/26Sun
2 stopsAir Canada
19h 16mSYD-SEA
$892
6/10Tue
1 stopQantas Airways
19h 06mSEA-SYD
7/16Wed
1 stopQantas Airways
20h 56mSYD-SEA
$904
9/7Sun
1 stopAir Canada
24h 35mSEA-SYD
9/16Tue
1 stopAir Canada
20h 45mSYD-SEA
$905
10/22Wed
1 stopPhilippine Airlines
36h 25mSEA-MEL
11/5Wed
1 stopPhilippine Airlines
29h 35mMEL-SEA
$910
6/1Sun
1 stopQantas Airways
19h 38mSEA-SYD
6/12Thu
1 stopQantas Airways
29h 24mSYD-SEA
$912
9/14Sun
1 stopPhilippine Airlines
41h 20mSEA-BNE
9/28Sun
1 stopPhilippine Airlines
25h 00mBNE-SEA
$937
8/22Fri
1 stop
33h 45mSEA-SYD
9/9Tue
2 stops
22h 35mSYD-SEA
$937
8/23Sat
2 stops
34h 10mSEA-SYD
8/31Sun
1 stop
22h 24mSYD-SEA
$944
6/27Fri
1 stopAmerican Airlines
23h 50mSEA-SYD
8/22Fri
1 stopAmerican Airlines
26h 28mSYD-SEA
$947

Search by stops

Search by airline

Search by price

Recent one-way flight deals

8/28Thu
1 stop
25h 00mSEA-SYD
$380
9/20Sat
2 stops
31h 10mPDX-SYD
$413
9/20Sat
1 stopUnited Airlines
24h 10mPDX-SYD
$431
6/17Tue
2 stopsUnited Airlines
27h 00mPDX-SYD
$436
6/1Sun
1 stopAir Canada
23h 25mSEA-SYD
$468
6/2Mon
1 stopQantas Airways
22h 05mSEA-SYD
$473
6/9Mon
1 stopQantas Airways
23h 25mSEA-SYD
$476
6/1Sun
2 stopsAir Canada
26h 45mSEA-SYD
$488
8/28Thu
2 stopsANA
26h 40mSEA-SYD
$491
8/10Sun
2 stopsANA
28h 05mSEA-MEL
$580

Search by stops

Search by airline

Search by price

Last minute flights from Washington to Australia

Last minute flight, train and bus deals

5/8Thu
multi-stopUnited Airlines
19h 25mPDX-SYD
5/22Thu
multi-stopUnited Airlines
21h 26mSYD-PDX
$965
5/8Thu
multi-stopUnited Airlines
25h 00mPDX-SYD
5/23Fri
multi-stopUnited Airlines
24h 59mSYD-PDX
$970
5/7Wed
multi-stopHawaiian Airlines
18h 30mSEA-SYD
5/9Fri
multi-stopHawaiian Airlines
17h 15mSYD-SEA
$1,152
5/8Thu
multi-stopHawaiian Airlines
18h 30mSEA-SYD
5/10Sat
multi-stopHawaiian Airlines
25h 35mSYD-SEA
$1,158
5/7Wed
multi-stopAlaska Airlines
18h 40mPDX-SYD
5/18Sun
multi-stopAlaska Airlines
25h 40mSYD-PDX
$1,158
5/6Tue
multi-stopAlaska Airlines
33h 05mPDX-SYD
5/20Tue
multi-stopAlaska Airlines
25h 40mSYD-PDX
$1,175
5/9Fri
multi-stop
30h 11mSEA-BNE
5/11Sun
multi-stop
54h 40mBNE-SEA
$1,239
5/10Sat
multi-stop
26h 21mPDX-SYD
5/19Mon
multi-stop
21h 30mSYD-PDX
$1,293
5/10Sat
multi-stopFiji Airways
41h 01mPDX-SYD
5/19Mon
multi-stopFiji Airways
27h 44mSYD-PDX
$1,492
5/10Sat
multi-stopFiji Airways
41h 01mPDX-SYD
5/20Tue
multi-stopFiji Airways
24h 28mSYD-PDX
$1,642

Search by stops

Search by airline

Search by price

Everything you need to know for your flight to Australia

Cabin class types available on flights to Washington

Cabin classes available on flights to Washington. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.