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Cheap flights from Washington, D.C. Dulles Intl Airport to Sydney from $587

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 Sydney departing on 11/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Washington, D.C. Dulles Intl Airport to Sydney

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
11:12 am - 10:25 pmIAD  Washington, D.C. Dulles Intl-SYD Sydney Kingsford Smith
45h 13m3 stops Orlando Los Angeles Nadi
Multiple Airlines Logo
1:15 pm - 6:20 amSYD  Sydney Kingsford Smith-IAD Washington, D.C. Dulles Intl
31h 05m3 stops Nadi Los Angeles Las Vegas Harry Reid Intl
$1,054Multiple Airlines
Wed, Sep 23 - Wed, Sep 30
Multiple Airlines Logo
11:12 am - 11:50 amIAD  Washington, D.C. Dulles Intl-SYD Sydney Kingsford Smith
34h 38m3 stops Orlando Los Angeles Nadi
Multiple Airlines Logo
1:15 pm - 6:20 amSYD  Sydney Kingsford Smith-IAD Washington, D.C. Dulles Intl
31h 05m3 stops Nadi Los Angeles Las Vegas Harry Reid Intl
$1,068Multiple Airlines
Wed, Sep 23 - Wed, Sep 30
Air New Zealand Logo
8:25 am - 10:35 amIAD  Washington, D.C. Dulles Intl-SYD Sydney Kingsford Smith
34h 10m2 stops Houston George Bush Intcntl Auckland Intl
Air New Zealand Logo
2:05 pm - 12:50 amSYD  Sydney Kingsford Smith-IAD Washington, D.C. Dulles Intl
26h 45m2 stops Auckland Intl Los Angeles
$1,247Air New Zealand
Tue, Jan 26 - Wed, Feb 17
Air New Zealand Logo
8:35 am - 8:45 amIAD  Washington, D.C. Dulles Intl-SYD Sydney Kingsford Smith
34h 10m2 stops San Francisco Auckland Intl
Air New Zealand Logo
9:55 am - 10:30 pmSYD  Sydney Kingsford Smith-IAD Washington, D.C. Dulles Intl
27h 35m2 stops Auckland Intl Houston George Bush Intcntl
$1,247Air New Zealand
Sun, Aug 23 - Wed, Oct 14
Air Canada Logo
9:45 am - 7:20 amIAD  Washington, D.C. Dulles Intl-SYD Sydney Kingsford Smith
31h 35m2 stops Montreal Pierre Elliott Trudeau Intl Vancouver Intl
Air Canada Logo
10:20 am - 3:00 pmSYD  Sydney Kingsford Smith-IAD Washington, D.C. Dulles Intl
43h 40m2 stops Vancouver Intl Montreal Pierre Elliott Trudeau Intl
$1,403Air Canada
Tue, Sep 22 - Tue, Oct 6
Air Canada Logo
9:45 am - 8:20 amIAD  Washington, D.C. Dulles Intl-SYD Sydney Kingsford Smith
31h 35m2 stops Montreal Pierre Elliott Trudeau Intl Vancouver Intl
Air Canada Logo
10:20 am - 8:23 pmSYD  Sydney Kingsford Smith-IAD Washington, D.C. Dulles Intl
25h 03m2 stops Vancouver Intl Montreal Pierre Elliott Trudeau Intl
$1,403Air Canada
Sun, Oct 11 - Sun, Oct 25
Qantas Airways Logo
3:08 pm - 6:55 amIAD  Washington, D.C. Dulles Intl-SYD Sydney Kingsford Smith
24h 47m1 stop Dallas/Fort Worth
Qantas Airways Logo
2:05 pm - 11:19 pmSYD  Sydney Kingsford Smith-IAD Washington, D.C. Dulles Intl
25h 14m1 stop Dallas/Fort Worth
$1,757Qantas Airways
Wed, Oct 21 - Wed, Nov 18
Qantas Airways Logo
4:39 pm - 6:55 amIAD  Washington, D.C. Dulles Intl-SYD Sydney Kingsford Smith
22h 16m1 stop Dallas/Fort Worth
Qantas Airways Logo
2:05 pm - 11:19 pmSYD  Sydney Kingsford Smith-IAD Washington, D.C. Dulles Intl
25h 14m1 stop Dallas/Fort Worth
$1,757Qantas Airways
Wed, Nov 4 - Wed, Nov 18
United Airlines Logo
5:40 pm - 9:20 amIAD  Washington, D.C. Dulles Intl-SYD Sydney Kingsford Smith
23h 40m1 stop San Francisco
United Airlines Logo
11:20 am - 9:20 pmSYD  Sydney Kingsford Smith-IAD Washington, D.C. Dulles Intl
26h 00m1 stop Los Angeles
$1,808United Airlines
Tue, Dec 29 - Wed, Jan 13
United Airlines Logo
12:45 pm - 7:55 amIAD  Washington, D.C. Dulles Intl-SYD Sydney Kingsford Smith
28h 10m1 stop San Francisco
United Airlines Logo
11:50 am - 12:59 amSYD  Sydney Kingsford Smith-IAD Washington, D.C. Dulles Intl
28h 09m1 stop San Francisco
$1,808United Airlines
Tue, Oct 6 - Sun, Oct 25

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Air New Zealand flights from Washington, D.C. Dulles Intl Airport to Sydney

Our best Air New Zealand deals on Washington, D.C. Dulles Intl Airport to Sydney flight tickets
Air New Zealand
Aug 23
IAD8:35 amWashington, D.C. Dulles Intl
34h 10m
2 stops
SYD8:45 amSydney Kingsford Smith
Oct 14
SYD11:55 amSydney Kingsford Smith
27h 46m
2 stops
IAD12:41 amWashington, D.C. Dulles Intl
$1,247
Air New Zealand
Nov 9
IAD8:25 amWashington, D.C. Dulles Intl
32h 10m
2 stops
SYD8:35 amSydney Kingsford Smith
Nov 23
SYD2:05 pmSydney Kingsford Smith
31h 21m
2 stops
IAD5:26 amWashington, D.C. Dulles Intl
$1,248
Air New Zealand
Oct 21
IAD3:36 pmWashington, D.C. Dulles Intl
26h 09m
2 stops
SYD8:45 amSydney Kingsford Smith
Nov 18
SYD2:05 pmSydney Kingsford Smith
31h 21m
2 stops
IAD5:26 amWashington, D.C. Dulles Intl
$1,257

Air Canada flights from Washington, D.C. Dulles Intl Airport to Sydney

Our best Air Canada deals on Washington, D.C. Dulles Intl Airport to Sydney flight tickets
Air Canada
Aug 11
IAD9:45 amWashington, D.C. Dulles Intl
31h 35m
2 stops
SYD7:20 amSydney Kingsford Smith
Aug 17
SYD9:20 amSydney Kingsford Smith
45h 21m
2 stops
IAD4:41 pmWashington, D.C. Dulles Intl
$1,433
Air Canada
Aug 13
IAD9:45 amWashington, D.C. Dulles Intl
31h 35m
2 stops
SYD7:20 amSydney Kingsford Smith
Aug 17
SYD9:20 amSydney Kingsford Smith
44h 04m
2 stops
IAD3:24 pmWashington, D.C. Dulles Intl
$1,454
Air Canada
Aug 13
IAD9:45 amWashington, D.C. Dulles Intl
31h 35m
2 stops
SYD7:20 amSydney Kingsford Smith
Aug 17
SYD9:20 amSydney Kingsford Smith
43h 41m
3 stops
IAD3:01 pmWashington, D.C. Dulles Intl
$1,458

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. Dulles Intl Airport to Sydney 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 August 9, 2026.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Sydney that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Sydney

IAD Washington, D.C. Dulles Intl - SYD Sydney Kingsford Smith

IADSYD

Washington, D.C. Dulles Intl

Wed 9/23

11:12 am-10:25 pm

3 stops45h 13m

Sydney Kingsford Smith

Wed 9/30

1:15 pm-6:20 am

3 stops31h 05m

$1,054

Washington, D.C.Sydney

IAD Washington, D.C. Dulles Intl - SYD Sydney Kingsford Smith

IADSYD

Washington, D.C. Dulles Intl

Wed 9/23

11:12 am-11:50 am

3 stops34h 38m

Sydney Kingsford Smith

Wed 9/30

1:15 pm-6:20 am

3 stops31h 05m

$1,068

Washington, D.C.Sydney

IAD Washington, D.C. Dulles Intl - SYD Sydney Kingsford Smith

IADSYD

Washington, D.C. Dulles Intl

Tue 1/26

8:25 am-10:35 am

2 stops34h 10m

Sydney Kingsford Smith

Wed 2/17

2:05 pm-12:50 am

2 stops26h 45m

$1,247

Washington, D.C.Sydney

IAD Washington, D.C. Dulles Intl - SYD Sydney Kingsford Smith

IADSYD

Washington, D.C. Dulles Intl

Sun 8/23

8:35 am-8:45 am

2 stops34h 10m

Sydney Kingsford Smith

Wed 10/14

9:55 am-10:30 pm

2 stops27h 35m

$1,247

Washington, D.C.Sydney

IAD Washington, D.C. Dulles Intl - SYD Sydney Kingsford Smith

IADSYD

Washington, D.C. Dulles Intl

Tue 9/22

9:45 am-7:20 am

2 stops31h 35m

Sydney Kingsford Smith

Tue 10/6

10:20 am-3:00 pm

2 stops43h 40m

$1,403

Washington, D.C.Sydney

IAD Washington, D.C. Dulles Intl - SYD Sydney Kingsford Smith

IADSYD

Washington, D.C. Dulles Intl

Sun 10/11

9:45 am-8:20 am

2 stops31h 35m

Sydney Kingsford Smith

Sun 10/25

10:20 am-8:23 pm

2 stops25h 03m

$1,403

Washington, D.C.Sydney

IAD Washington, D.C. Dulles Intl - SYD Sydney Kingsford Smith

IADSYD

Washington, D.C. Dulles Intl

Wed 10/21

3:08 pm-6:55 am

1 stop24h 47m

Sydney Kingsford Smith

Wed 11/18

2:05 pm-11:19 pm

1 stop25h 14m

$1,757
Quickest round-trip

Washington, D.C.Sydney

IAD Washington, D.C. Dulles Intl - SYD Sydney Kingsford Smith

IADSYD

Washington, D.C. Dulles Intl

Wed 11/4

4:39 pm-6:55 am

1 stop22h 16m

Sydney Kingsford Smith

Wed 11/18

2:05 pm-11:19 pm

1 stop25h 14m

$1,757

Washington, D.C.Sydney

IAD Washington, D.C. Dulles Intl - SYD Sydney Kingsford Smith

IADSYD

Washington, D.C. Dulles Intl

Tue 12/29

5:40 pm-9:20 am

1 stop23h 40m

Sydney Kingsford Smith

Wed 1/13

11:20 am-9:20 pm

1 stop26h 00m

$1,808

Washington, D.C.Sydney

IAD Washington, D.C. Dulles Intl - SYD Sydney Kingsford Smith

IADSYD

Washington, D.C. Dulles Intl

Tue 10/6

12:45 pm-7:55 am

1 stop28h 10m

Sydney Kingsford Smith

Sun 10/25

11:50 am-12:59 am

1 stop28h 09m

$1,808

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 Sydney from

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

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 typical price of a round-trip flight between Washington, D.C. Dulles Intl Airport and Sydney?

Prices are currently typical for flights on this route.

Typical prices usually range from $827 to $1,762.
The lowest price recently found on this route was $1,163.

What is the cheapest month to fly to Sydney?

In general, August is the cheapest month to fly from Washington, D.C. Dulles Intl Airport to Sydney. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $1,140. If you are unable to visit Sydney during the month of August, then departing from Washington, D.C. Dulles Intl Airport during the month February is also very affordable. Most momondo users find prices during this month for around $1,417.

How far in advance should I book a flight from Washington, D.C. Dulles Intl Airport to Sydney?

You are more likely to see cheaper flights to Sydney from Washington, D.C. Dulles Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Sydney for around $1,646 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Sydney from Washington, D.C. Dulles Intl Airport for as low as $1,266 on momondo.

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

You could potentially save up to 1% on your flight if you consider stops on a Washington, D.C. Dulles Intl Airport to Sydney flight.

How have Washington, D.C. Dulles Intl Airport to Sydney flight prices changed over time?

When to book flights from Washington, D.C. Dulles Intl Airport to Sydney

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. Dulles Intl Airport to Sydney according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Washington, D.C. Dulles Intl Airport to Sydney (IAD to SYD) flight deals and tips

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

Fastest flight time

26h 09m

Direct flights

None
The fastest flight from Washington, D.C. Dulles Intl Airport to Sydney takes 26h 09m
There are no direct flights from Washington, D.C. Dulles Intl Airport to Sydney. There are no popular flight routes from Washington, D.C. Dulles Intl Airport to Sydney.
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Frequently asked questions about flying from Washington, D.C. Dulles Intl Airport to Sydney

  • How far is Washington, D.C. Dulles Intl to Sydney Kingsford Smith by plane?

    The straight-line distance from Washington, D.C. Dulles Intl to Sydney Kingsford Smith is 9734.0 mi. Typically, this will take 26h 09m by plane in normal conditions.

  • When did momondo last update prices for flights from Washington, D.C. Dulles Intl Airport to Sydney Kingsford Smith Airport?

    Prices for flights from Washington, D.C. Dulles Intl Airport to Sydney Kingsford Smith Airport are updated daily.

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

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington, D.C. Dulles Intl Airport to Sydney Kingsford Smith Airport.

  • What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?

    The travel and health documents required for your trip to Sydney Kingsford Smith Airport 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 Sydney Kingsford Smith Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from Washington, D.C. Dulles Intl Airport to Sydney?

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

Compare and see reviews for airlines that fly from Washington, D.C. Dulles Intl Airport to Sydney with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $337Free CancellationRating
7.4
10,089 reviews
Search United Airlines flights
Air CanadaPriceFrom $847Free CancellationRating
7.1
11,455 reviews
Search Air Canada flights
American AirlinesPriceFrom $855Free CancellationRating
7.1
11,893 reviews
Search American Airlines flights
Qantas AirwaysPriceFrom $973Free CancellationRating
7.5
1,079 reviews
Search Qantas Airways flights
Air New ZealandPriceFrom $1,285Free CancellationRating
8.0
659 reviews
Search Air New Zealand flights

Traveling to a place near Sydney?

Book flights to Sydney if you plan to visit one of these locations
Parramatta
Bondi Beach
Wollongong
Penrith
Katoomba
Leura
Cronulla
Randwick
Manly
Lithgow
Coogee
Terrigal
Charlestown
Swansea

Why use momondo?

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

It is quick and easy to find Washington, D.C. to Sydney flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Sydney that suits you.

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

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

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Washington, D.C. to Sydney.

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

If you are not ready to book a flight from Washington, D.C. to Sydney now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Sydney and let you know when they change.

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