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Cheap flights from Sydney to Washington, D.C. from $497

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Sydney to Washington, D.C. departing on 10/15. 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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Cheap round-trip flights

Qantas Airways Logo
12:10 pm - 6:56 pmSYD-IAD
20h 46m1 stop
Qantas Airways Logo
6:04 pm - 6:55 amIAD-SYD
22h 51m1 stop
$1,097Qantas Airways
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Sat, Aug 23 - Sun, Aug 31
Air New Zealand Logo
9:55 am - 10:15 pmSYD-IAD
26h 20m2 stops
Air New Zealand Logo
8:35 am - 8:45 amIAD-SYD
34h 10m2 stops
$1,101Air New Zealand
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Sun, Aug 24 - Mon, Sep 1
American Airlines Logo
12:10 pm - 10:43 pmSYD-IAD
24h 33m1 stop
American Airlines Logo
11:47 am - 7:05 amIAD-SYD
29h 18m2 stops
$1,109American Airlines
Find Deal
Mon, Sep 1 - Mon, Sep 8
Alaska Airlines Logo
9:40 pm - 5:09 pmSYD-IAD
33h 29m2 stops
Alaska Airlines Logo
6:09 pm - 7:45 pmIAD-SYD
35h 36m2 stops
$1,110Alaska Airlines
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Tue, Sep 2 - Fri, Sep 26
United Airlines Logo
11:20 am - 9:25 pmSYD-IAD
25h 05m2 stops
United Airlines Logo
6:00 am - 7:00 amIAD-SYD
34h 00m3 stops
$1,129United Airlines
Find Deal
Tue, Oct 14 - Sun, Oct 26
United Airlines Logo
10:30 am - 5:38 amSYD-IAD
34h 08m1 stop
United Airlines Logo
7:00 am - 9:15 amIAD-SYD
35h 15m2 stops
$1,139United Airlines
Find Deal
Thu, Oct 16 - Sat, Oct 25
American Airlines Logo
12:10 pm - 6:56 pmSYD-IAD
20h 46m1 stop
American Airlines Logo
6:34 am - 7:05 amIAD-SYD
34h 31m2 stops
$1,148American Airlines
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Sat, Aug 23 - Sun, Aug 31
Air Canada Logo
9:20 am - 6:31 amSYD-IAD
35h 11m1 stop
Air Canada Logo
8:28 am - 7:20 amIAD-SYD
32h 52m2 stops
$1,221Air Canada
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Thu, Sep 18 - Wed, Sep 24
Air Canada Logo
9:20 am - 9:12 pmSYD-IAD
25h 52m2 stops
Air Canada Logo
5:22 pm - 7:20 amIAD-SYD
47h 58m2 stops
$1,270Air Canada
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Sun, Sep 21 - Tue, Sep 23
Alaska Airlines Logo
9:40 pm - 5:09 pmSYD-IAD
33h 29m1 stop
Alaska Airlines Logo
6:09 pm - 7:45 pmIAD-SYD
35h 36m2 stops
$1,323Alaska Airlines
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Tue, Sep 2 - Tue, Sep 9

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

Our best Air New Zealand deals on Sydney to Washington, D.C. Dulles Intl Airport flight tickets
Air New Zealand
Aug 24
SYD9:55 amSydney Kingsford Smith
26h 20m
2 stops
IAD10:15 pmWashington, D.C. Dulles Intl
Sep 1
IAD8:35 amWashington, D.C. Dulles Intl
34h 10m
2 stops
SYD8:45 amSydney Kingsford Smith
$1,101
Find similar
Air New Zealand
Aug 25
SYD11:50 amSydney Kingsford Smith
26h 40m
2 stops
IAD12:30 amWashington, D.C. Dulles Intl
Sep 2
IAD12:45 pmWashington, D.C. Dulles Intl
30h 00m
2 stops
SYD8:45 amSydney Kingsford Smith
$1,107
Find similar
Air New Zealand
Sep 7
SYD9:55 amSydney Kingsford Smith
26h 20m
2 stops
IAD10:15 pmWashington, D.C. Dulles Intl
Sep 12
IAD4:10 pmWashington, D.C. Dulles Intl
26h 35m
2 stops
SYD8:45 amSydney Kingsford Smith
$1,195
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Alaska Airlines flights from Sydney to Washington, D.C. Dulles Intl Airport

Our best Alaska Airlines deals on Sydney to Washington, D.C. Dulles Intl Airport flight tickets
Alaska Airlines
Sep 2
SYD9:40 pmSydney Kingsford Smith
33h 29m
2 stops
IAD5:09 pmWashington, D.C. Dulles Intl
Sep 26
IAD6:09 pmWashington, D.C. Dulles Intl
35h 36m
2 stops
SYD7:45 pmSydney Kingsford Smith
$1,110
Find similar
Alaska Airlines
Sep 2
SYD9:40 pmSydney Kingsford Smith
33h 29m
1 stop
IAD5:09 pmWashington, D.C. Dulles Intl
Sep 9
IAD6:09 pmWashington, D.C. Dulles Intl
35h 36m
2 stops
SYD7:45 pmSydney Kingsford Smith
$1,323
Find similar
Alaska Airlines
Sep 12
SYD9:40 pmSydney Kingsford Smith
33h 12m
2 stops
IAD4:52 pmWashington, D.C. Dulles Intl
Sep 26
IAD5:52 pmWashington, D.C. Dulles Intl
35h 53m
2 stops
SYD7:45 pmSydney Kingsford Smith
$1,342
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momondo Fare Finder

 
Customize your flight search to find flights from Sydney to Washington, D.C. Dulles Intl Airport 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 6, 2025.
Use the filters below to find and compare flights from Sydney to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SydneyWashington, D.C.

SYD - IAD

SYDIAD

Sydney Kingsford Smith

Sat 8/23

12:10 pm-6:56 pm

1 stop20h 46m

Washington, D.C. Dulles Intl

Sun 8/31

6:04 pm-6:55 am

1 stop22h 51m

$1,097

SydneyWashington, D.C.

SYD - IAD

SYDIAD

Sydney Kingsford Smith

Sun 8/24

9:55 am-10:15 pm

2 stops26h 20m

Washington, D.C. Dulles Intl

Mon 9/1

8:35 am-8:45 am

2 stops34h 10m

$1,101

SydneyWashington, D.C.

SYD - IAD

SYDIAD

Sydney Kingsford Smith

Mon 9/1

12:10 pm-10:43 pm

1 stop24h 33m

Washington, D.C. Dulles Intl

Mon 9/8

11:47 am-7:05 am

2 stops29h 18m

$1,109

SydneyWashington, D.C.

SYD - IAD

SYDIAD

Sydney Kingsford Smith

Tue 9/2

9:40 pm-5:09 pm

2 stops33h 29m

Washington, D.C. Dulles Intl

Fri 9/26

6:09 pm-7:45 pm

2 stops35h 36m

$1,110

SydneyWashington, D.C.

SYD - IAD

SYDIAD

Sydney Kingsford Smith

Tue 10/14

11:20 am-9:25 pm

2 stops25h 05m

Washington, D.C. Dulles Intl

Sun 10/26

6:00 am-7:00 am

3 stops34h 00m

$1,129

SydneyWashington, D.C.

SYD - IAD

SYDIAD

Sydney Kingsford Smith

Thu 10/16

10:30 am-5:38 am

1 stop34h 08m

Washington, D.C. Dulles Intl

Sat 10/25

7:00 am-9:15 am

2 stops35h 15m

$1,139

SydneyWashington, D.C.

SYD - IAD

SYDIAD

Sydney Kingsford Smith

Sat 8/23

12:10 pm-6:56 pm

1 stop20h 46m

Washington, D.C. Dulles Intl

Sun 8/31

6:34 am-7:05 am

2 stops34h 31m

$1,148

SydneyWashington, D.C.

SYD - IAD

SYDIAD

Sydney Kingsford Smith

Thu 9/18

9:20 am-6:31 am

1 stop35h 11m

Washington, D.C. Dulles Intl

Wed 9/24

8:28 am-7:20 am

2 stops32h 52m

$1,221

SydneyWashington, D.C.

SYD - IAD

SYDIAD

Sydney Kingsford Smith

Sun 9/21

9:20 am-9:12 pm

2 stops25h 52m

Washington, D.C. Dulles Intl

Tue 9/23

5:22 pm-7:20 am

2 stops47h 58m

$1,270

SydneyWashington, D.C.

SYD - IAD

SYDIAD

Sydney Kingsford Smith

Tue 9/2

9:40 pm-5:09 pm

1 stop33h 29m

Washington, D.C. Dulles Intl

Tue 9/9

6:09 pm-7:45 pm

2 stops35h 36m

$1,323

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 Washington, D.C. from

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

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 Sydney and Washington, D.C. Dulles Intl Airport?

What is the cheapest month to fly to Washington, D.C. Dulles Intl Airport?

In general, March is the cheapest month to fly from Sydney to Washington, D.C. Dulles Intl Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $1,049. If you aren’t able to travel to Washington, D.C. Dulles Intl Airport during the month of March, then flying in August is also cheap. Prices for this month can be found on momondo for an average of $1,123.

What is the cheapest day to depart on your flight to Washington, D.C. Dulles Intl Airport?

Our data shows that Tuesday is the least expensive day to fly to Washington, D.C. Dulles Intl Airport. Tickets to fly out on this day can be as low as $1,101. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from Sydney to Washington, D.C. Dulles Intl Airport for around $2,084.

What is the cheapest time of day to depart on your flight to Washington, D.C. Dulles Intl Airport?

Flying to Washington, D.C. Dulles Intl Airport from Sydney in the morning is the least expensive time of day to depart. momondo users have found prices as low as $1,399 when looking at flights departing in the morning. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $1,554 on average. Flights to Washington, D.C. Dulles Intl Airport from Sydney in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

What is the cheapest Sydney Kingsford Smith to Washington, D.C. Dulles Intl flight route?

Fly from Sydney Kingsford Smith to Washington, D.C. Dulles Intl for the best Sydney Kingsford Smith - Washington, D.C. Dulles Intl flight prices

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

You are more likely to see cheaper flights to Washington, D.C. Dulles Intl Airport from Sydney when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. Dulles Intl Airport for around $1,313 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. Dulles Intl Airport from Sydney for as low as $1,187 on momondo.

What cabin class options are available on Sydney Kingsford Smith to Washington, D.C. Dulles Intl flights?

There are 1 cabin classes available to choose from on Sydney Kingsford Smith to Washington, D.C. Dulles Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

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

You could potentially save up to 12% on your flight if you consider stops on a Sydney to Washington, D.C. Dulles Intl Airport flight.

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

As of August 2025, prices for Sydney to Washington, D.C. Dulles Intl Airport flights are approximately 54% cheaper when compared to flights at the same time last year.

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

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

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

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

Best Price Found

$497

Fastest flight time

20h 46m

Direct flights

None
The best one-way flight to Washington, D.C. Dulles Intl Airport from Sydney in the past 72 hours is $497. The best round-trip flight deal from Sydney to Washington, D.C. Dulles Intl Airport found on momondo in the last 72 hours is $1,097.
The fastest flight from Sydney to Washington, D.C. Dulles Intl Airport takes 20h 46m
There are no direct flights from Sydney to Washington, D.C. Dulles Intl Airport. Popular non-direct route for this connection is Sydney Kingsford Smith Airport - Washington, D.C. Dulles Intl Airport.
Search flight deals

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

    The straight-line distance from Sydney Kingsford Smith to Washington, D.C. Dulles Intl is 9734.0 mi. In terms of flight time, this usually takes a little over 20h 46m.

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

    Prices for flights from Sydney Kingsford Smith Airport to Washington, D.C. Dulles Intl Airport are refreshed on a daily basis.

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

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

    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 Sydney Kingsford Smith Airport to Washington, D.C. Dulles Intl Airport.

  • What documentation or ID do you need to fly to Washington, D.C. Dulles Intl Airport?

    The travel and health documents you'll need for your trip to Washington, D.C. Dulles Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Washington, D.C. Dulles Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

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

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

Compare and see reviews for airlines that fly from Sydney to Washington, D.C. Dulles Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $1,240Free CancellationRating
7.4
8,917 reviews
Search United Airlines flights

Traveling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
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Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Sydney to Washington, D.C.. Millions of users trust and use momondo every year so you are in good hands.

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

Flights from Sydney to Washington, D.C. with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

momondo helps you find the best flight between Sydney and Washington, D.C. by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Of course. momondo tracks the price of Sydney to Washington, D.C. 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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