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Cheap flights from Washington, D.C. Dulles Intl Airport to Australia from $427

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. Dulles Intl Airport to Australia departing on 11/23. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Washington, D.C. Dulles Intl Airport to Australia

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
6:04 am - 6:55 amIAD-SYD
32h 51m1 stop
American Airlines Logo
2:05 pm - 10:41 pmSYD-IAD
24h 36m1 stop
$837American Airlines
Find Deal
Mon, Nov 10 - Wed, Nov 26
American Airlines Logo
6:32 am - 6:55 amIAD-SYD
32h 23m1 stop
American Airlines Logo
12:10 pm - 10:27 pmSYD-IAD
24h 17m1 stop
$845American Airlines
Find Deal
Tue, Feb 17 - Tue, May 26
Qantas Airways Logo
5:03 pm - 11:50 amIAD-CNS
27h 47m2 stops
Qantas Airways Logo
3:35 pm - 4:08 pmCNS-IAD
39h 33m2 stops
$1,332Qantas Airways
Find Deal
Mon, Dec 1 - Wed, Dec 10
Air Canada Logo
9:45 am - 9:35 amIAD-SYD
31h 50m2 stops
Air Canada Logo
9:20 am - 7:46 amSYD-IAD
36h 26m2 stops
$1,368Air Canada
Find Deal
Tue, Feb 17 - Tue, May 26
Air Canada Logo
9:45 am - 9:35 amIAD-SYD
31h 50m2 stops
Air Canada Logo
10:20 am - 8:59 pmSYD-IAD
25h 39m2 stops
$1,369Air Canada
Find Deal
Wed, Mar 4 - Tue, Mar 24
Air New Zealand Logo
6:00 pm - 9:30 amIAD-MEL
23h 30m1 stop
Air New Zealand Logo
10:35 am - 8:41 pmMEL-IAD
26h 06m2 stops
$1,500Air New Zealand
Find Deal
Tue, Feb 10 - Wed, Feb 18
Air New Zealand Logo
3:35 pm - 8:30 amIAD-MEL
25h 55m1 stop
Air New Zealand Logo
6:55 pm - 10:36 pmMEL-IAD
41h 41m2 stops
$1,503Air New Zealand
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Wed, Apr 1 - Sat, Apr 18
Qantas Airways Logo
5:15 pm - 6:30 amIAD-BNE
22h 15m1 stop
Qantas Airways Logo
8:40 am - 4:09 pmBNE-IAD
21h 29m1 stop
$1,535Qantas Airways
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Mon, Mar 2 - Fri, Mar 13
United Airlines Logo
12:35 pm - 10:00 amIAD-MEL
29h 25m1 stop
United Airlines Logo
11:30 am - 7:21 pmMEL-IAD
23h 51m2 stops
$1,539United Airlines
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Wed, Dec 31 - Tue, Jan 20
United Airlines Logo
4:00 pm - 9:30 amIAD-MEL
25h 30m2 stops
United Airlines Logo
11:30 am - 4:22 pmMEL-IAD
20h 52m1 stop
$1,540United Airlines
Find Deal
Mon, Dec 8 - Wed, Dec 24

American Airlines flights from Washington, D.C. Dulles Intl Airport to Australia

Our best American Airlines deals on Washington, D.C. Dulles Intl Airport to Australia flight tickets
American Airlines
Nov 10
IAD6:04 amWashington, D.C. Dulles Intl
32h 51m
1 stop
SYD6:55 amSydney Kingsford Smith
Nov 26
SYD2:05 pmSydney Kingsford Smith
24h 36m
1 stop
IAD10:41 pmWashington, D.C. Dulles Intl
$837
Find similar
American Airlines
Feb 17
IAD6:32 amWashington, D.C. Dulles Intl
32h 23m
1 stop
SYD6:55 amSydney Kingsford Smith
May 26
SYD12:10 pmSydney Kingsford Smith
24h 17m
1 stop
IAD10:27 pmWashington, D.C. Dulles Intl
$845
Find similar
American Airlines
Nov 2
IAD5:04 amWashington, D.C. Dulles Intl
32h 51m
1 stop
SYD5:55 amSydney Kingsford Smith
Nov 17
SYD2:05 pmSydney Kingsford Smith
24h 28m
1 stop
IAD10:33 pmWashington, D.C. Dulles Intl
$846
Find similar

Delta flights from Washington, D.C. Dulles Intl Airport to Australia

Our best Delta deals on Washington, D.C. Dulles Intl Airport to Australia flight tickets
Delta
Nov 3
IAD10:11 amWashington, D.C. Dulles Intl
30h 19m
2 stops
SYD8:30 amSydney Kingsford Smith
Nov 12
SYD10:40 amSydney Kingsford Smith
23h 46m
2 stops
IAD6:26 pmWashington, D.C. Dulles Intl
$865
Find similar
Delta
Oct 29
IAD3:33 pmWashington, D.C. Dulles Intl
24h 37m
2 stops
SYD7:10 amSydney Kingsford Smith
Nov 19
SYD10:40 amSydney Kingsford Smith
22h 24m
2 stops
IAD5:04 pmWashington, D.C. Dulles Intl
$866
Find similar
Delta
Nov 19
IAD3:35 pmWashington, D.C. Dulles Intl
24h 55m
2 stops
SYD8:30 amSydney Kingsford Smith
Nov 28
SYD10:40 amSydney Kingsford Smith
26h 52m
2 stops
IAD9:32 pmWashington, D.C. Dulles Intl
$868
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. Dulles Intl Airport to Australia that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated October 16, 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Australia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Mon 11/10

6:04 am-6:55 am

1 stop32h 51m

Sydney Kingsford Smith

Wed 11/26

2:05 pm-10:41 pm

1 stop24h 36m

$837

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Tue 2/17

6:32 am-6:55 am

1 stop32h 23m

Sydney Kingsford Smith

Tue 5/26

12:10 pm-10:27 pm

1 stop24h 17m

$845

Washington, D.C.Cairns

IAD - CNS

IADCNS

Washington, D.C. Dulles Intl

Mon 12/1

5:03 pm-11:50 am

2 stops27h 47m

Cairns

Wed 12/10

3:35 pm-4:08 pm

2 stops39h 33m

$1,332

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Tue 2/17

9:45 am-9:35 am

2 stops31h 50m

Sydney Kingsford Smith

Tue 5/26

9:20 am-7:46 am

2 stops36h 26m

$1,368

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Wed 3/4

9:45 am-9:35 am

2 stops31h 50m

Sydney Kingsford Smith

Tue 3/24

10:20 am-8:59 pm

2 stops25h 39m

$1,369

Washington, D.C.Melbourne

IAD - MEL

IADMEL

Washington, D.C. Dulles Intl

Tue 2/10

6:00 pm-9:30 am

1 stop23h 30m

Melbourne

Wed 2/18

10:35 am-8:41 pm

2 stops26h 06m

$1,500

Washington, D.C.Melbourne

IAD - MEL

IADMEL

Washington, D.C. Dulles Intl

Wed 4/1

3:35 pm-8:30 am

1 stop25h 55m

Melbourne

Sat 4/18

6:55 pm-10:36 pm

2 stops41h 41m

$1,503

Washington, D.C.Brisbane

IAD - BNE

IADBNE

Washington, D.C. Dulles Intl

Mon 3/2

5:15 pm-6:30 am

1 stop22h 15m

Brisbane

Fri 3/13

8:40 am-4:09 pm

1 stop21h 29m

$1,535

Washington, D.C.Melbourne

IAD - MEL

IADMEL

Washington, D.C. Dulles Intl

Wed 12/31

12:35 pm-10:00 am

1 stop29h 25m

Melbourne

Tue 1/20

11:30 am-7:21 pm

2 stops23h 51m

$1,539

Washington, D.C.Melbourne

IAD - MEL

IADMEL

Washington, D.C. Dulles Intl

Mon 12/8

4:00 pm-9:30 am

2 stops25h 30m

Melbourne

Wed 12/24

11:30 am-4:22 pm

1 stop20h 52m

$1,540

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Australia from

How to get the cheapest flight ticket from Washington, D.C. Dulles Intl Airport to Australia

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Australia?

The month of May is, on average, the cheapest month to fly to Australia from Washington, D.C. Dulles Intl Airport, with most prices found around $917. If you aren’t able to travel during the month of May, then book flights to Australia from Washington, D.C. Dulles Intl Airport during February instead. Flights to Australia in February, while not as cheap as those in May, still average around $920.

What is the cheapest day to depart on your flight to Australia?

The cheapest day to depart from Washington, D.C. Dulles Intl Airport to Australia is on a Tuesday. Travelers who choose to depart for Australia on a Tuesday will often find tickets for as low as $1,260. On the other hand, Monday is the most expensive day to depart from Washington, D.C. Dulles Intl Airport because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $1,520.

What is the cheapest time of day to depart on your flight to Australia?

Flying to Australia from Washington, D.C. Dulles Intl Airport in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $1,368 when looking at flights departing in the afternoon. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $1,647 on average. Flights to Australia from Washington, D.C. Dulles Intl Airport in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

You are more likely to see cheaper flights to Australia from Washington, D.C. Dulles Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Australia for around $1,287 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Australia from Washington, D.C. Dulles Intl Airport for as low as $534 on momondo.

Can stopping save me money on Washington, D.C. Dulles Intl Airport to Australia flights?

You could potentially save up to 38% on your flight if you consider stops on a Washington, D.C. Dulles Intl Airport to Australia flight.

Cheap Washington, D.C. Dulles Intl Airport to Australia flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. Dulles Intl Airport to Australia

Direct flights

None
There are no direct flights from Washington, D.C. Dulles Intl Airport to Australia. There are no popular flight routes from Washington, D.C. Dulles Intl Airport to Australia.
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  • When did momondo last update prices for flights from Washington, D.C. Dulles Intl Airport to Australia?

    Prices for flights from Washington, D.C. Dulles Intl Airport to Australia refresh daily.

  • How many operators does momondo search for flights from Washington, D.C. Dulles Intl Airport to Australia?

  • How old do you have to be to fly from Washington, D.C. Dulles Intl Airport to Australia?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Washington, D.C. Dulles Intl Airport to Australia.

  • What documentation or ID do you need to fly to Australia?

    The travel and health documents required for your trip to Australia can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Australia. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Washington, D.C. Dulles Intl Airport to Australia

Compare and see reviews for airlines that fly from Washington, D.C. Dulles Intl Airport to Australia with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $327Free CancellationRating
7.4
8,982 reviews
Search United Airlines flights
DeltaPriceFrom $544Free CancellationRating
7.9
7,978 reviews
Search Delta flights
American AirlinesPriceFrom $674Free CancellationRating
7.2
11,040 reviews
Search American Airlines flights
Qantas AirwaysPriceFrom $678Free CancellationRating
7.5
918 reviews
Search Qantas Airways flights
Air CanadaPriceFrom $854Free CancellationRating
7.1
10,307 reviews
Search Air Canada flights
Air New ZealandPriceFrom $1,257Free CancellationRating
8.0
515 reviews
Search Air New Zealand flights
ANAPriceFrom $1,370Free CancellationRating
8.4
986 reviews
Search ANA flights
Qatar AirwaysPriceFrom $1,961Free CancellationRating
7.4
3,652 reviews
Search Qatar Airways flights

Why use momondo?

Why should I use momondo to find a flight deal from Washington, D.C. to Australia?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Australia from Washington, D.C..

Can I find flights from Washington, D.C. to Australia with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Australia from Washington, D.C. with this policy.

How can momondo help me find flights from Washington, D.C. to Australia?

Once you have performed a search for Washington, D.C. to Australia flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Washington, D.C. to Australia right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Washington, D.C. to Australia flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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