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Cheap flights from Sydney to Washington, D.C. from $721

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 4/14. 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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0 bags

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Cheap round-trip flights

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Air New Zealand Logo
1:55 pm - 12:59 am
SYD
-
IAD
27h 04m2 stops
Air New Zealand Logo
12:50 pm - 8:45 am
IAD
-
SYD
27h 55m2 stops
$1,122Air New Zealand
Sun, Jan 25 - Sun, Feb 1
American Airlines Logo
2:05 pm - 9:17 pm
SYD
-
IAD
23h 12m1 stop
American Airlines Logo
6:00 am - 6:55 am
IAD
-
SYD
32h 55m1 stop
$1,177American Airlines
Mon, Jan 26 - Mon, Feb 9
United Airlines Logo
11:20 am - 8:49 pm
SYD
-
IAD
25h 29m2 stops
United Airlines Logo
4:10 pm - 6:20 am
IAD
-
SYD
22h 10m1 stop
$1,181United Airlines
Mon, Jan 12 - Mon, Jan 26
Delta Logo
2:15 pm - 11:06 pm
SYD
-
IAD
24h 51m2 stops
Delta Logo
3:42 pm - 8:30 am
IAD
-
SYD
24h 48m2 stops
$1,182Delta
Mon, Jan 26 - Mon, Feb 9
United Airlines Logo
2:00 pm - 11:18 pm
SYD
-
IAD
25h 18m2 stops
United Airlines Logo
4:10 pm - 6:20 am
IAD
-
SYD
22h 10m1 stop
$1,183United Airlines
Mon, Jan 12 - Mon, Jan 26
United Airlines Logo
2:00 pm - 8:54 pm
SYD
-
IAD
22h 54m1 stop
United Airlines Logo
6:00 pm - 9:05 am
IAD
-
SYD
23h 05m1 stop
$1,190United Airlines
Mon, Jan 12 - Mon, Jan 26
Air China Logo
8:40 pm - 6:30 pm
SYD
-
IAD
37h 50m1 stop
Air China Logo
10:00 pm - 12:00 pm
IAD
-
SYD
46h 00m1 stop
$1,193Air China
Mon, Jan 12 - Fri, Jan 23
United Airlines Logo
12:10 pm - 4:45 pm
SYD
-
IAD
20h 35m1 stop
United Airlines Logo
7:45 pm - 6:20 am
IAD
-
SYD
42h 35m1 stop
$1,232United Airlines
Sun, Jan 18 - Sat, Jan 31
United Airlines Logo
11:20 am - 6:50 pm
SYD
-
IAD
23h 30m2 stops
United Airlines Logo
7:45 pm - 6:20 am
IAD
-
SYD
42h 35m1 stop
$1,233United Airlines
Sat, Dec 27 - Sat, Jan 10
Multiple Airlines Logo
8:40 pm - 6:30 pm
SYD
-
IAD
37h 50m1 stop
Multiple Airlines Logo
10:20 pm - 12:00 pm
IAD
-
SYD
45h 40m2 stops
$1,237Multiple Airlines
Mon, Jan 12 - Fri, Jan 23

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

Our best Air Canada deals on Sydney to Washington, D.C. Dulles Intl Airport flight tickets
Air Canada
Feb 2
SYD11:20 amSydney Kingsford Smith
25h 09m
2 stops
IAD8:29 pmWashington, D.C. Dulles Intl
Feb 19
IAD12:33 pmWashington, D.C. Dulles Intl
29h 02m
2 stops
SYD9:35 amSydney Kingsford Smith
$1,116
Find similar
Air Canada
May 5
SYD9:20 amSydney Kingsford Smith
40h 30m
2 stops
IAD11:50 amWashington, D.C. Dulles Intl
May 9
IAD10:05 pmWashington, D.C. Dulles Intl
43h 15m
2 stops
SYD7:20 amSydney Kingsford Smith
$1,495
Find similar
Air Canada
May 5
SYD9:20 amSydney Kingsford Smith
36h 30m
2 stops
IAD7:50 amWashington, D.C. Dulles Intl
May 9
IAD5:50 pmWashington, D.C. Dulles Intl
47h 30m
2 stops
SYD7:20 amSydney Kingsford Smith
$1,497
Find similar

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

Our best Delta deals on Sydney to Washington, D.C. Dulles Intl Airport flight tickets
Delta
Jan 26
SYD2:15 pmSydney Kingsford Smith
24h 51m
2 stops
IAD11:06 pmWashington, D.C. Dulles Intl
Feb 9
IAD3:42 pmWashington, D.C. Dulles Intl
24h 48m
2 stops
SYD8:30 amSydney Kingsford Smith
$1,182
Find similar
Delta
Jan 12
SYD2:15 pmSydney Kingsford Smith
25h 42m
2 stops
IAD11:57 pmWashington, D.C. Dulles Intl
Jan 26
IAD12:40 pmWashington, D.C. Dulles Intl
27h 50m
2 stops
SYD8:30 amSydney Kingsford Smith
$1,428
Find similar
Delta
Jan 12
SYD2:15 pmSydney Kingsford Smith
24h 51m
2 stops
IAD11:06 pmWashington, D.C. Dulles Intl
Jan 26
IAD3:42 pmWashington, D.C. Dulles Intl
24h 48m
2 stops
SYD8:30 amSydney Kingsford Smith
$1,578
Find similar

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 December 11, 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

Sun 1/25

1:55 pm-12:59 am

2 stops27h 04m

Washington, D.C. Dulles Intl

Sun 2/1

12:50 pm-8:45 am

2 stops27h 55m

$1,122

SydneyWashington, D.C.

SYD - IAD

SYDIAD

Sydney Kingsford Smith

Mon 1/26

2:05 pm-9:17 pm

1 stop23h 12m

Washington, D.C. Dulles Intl

Mon 2/9

6:00 am-6:55 am

1 stop32h 55m

$1,177

SydneyWashington, D.C.

SYD - IAD

SYDIAD

Sydney Kingsford Smith

Mon 1/12

11:20 am-8:49 pm

2 stops25h 29m

Washington, D.C. Dulles Intl

Mon 1/26

4:10 pm-6:20 am

1 stop22h 10m

$1,181

SydneyWashington, D.C.

SYD - IAD

SYDIAD

Sydney Kingsford Smith

Mon 1/26

2:15 pm-11:06 pm

2 stops24h 51m

Washington, D.C. Dulles Intl

Mon 2/9

3:42 pm-8:30 am

2 stops24h 48m

$1,182

SydneyWashington, D.C.

SYD - IAD

SYDIAD

Sydney Kingsford Smith

Mon 1/12

2:00 pm-11:18 pm

2 stops25h 18m

Washington, D.C. Dulles Intl

Mon 1/26

4:10 pm-6:20 am

1 stop22h 10m

$1,183

SydneyWashington, D.C.

SYD - IAD

SYDIAD

Sydney Kingsford Smith

Mon 1/12

2:00 pm-8:54 pm

1 stop22h 54m

Washington, D.C. Dulles Intl

Mon 1/26

6:00 pm-9:05 am

1 stop23h 05m

$1,190

SydneyWashington, D.C.

SYD - IAD

SYDIAD

Sydney Kingsford Smith

Mon 1/12

8:40 pm-6:30 pm

1 stop37h 50m

Washington, D.C. Dulles Intl

Fri 1/23

10:00 pm-12:00 pm

1 stop46h 00m

$1,193

SydneyWashington, D.C.

SYD - IAD

SYDIAD

Sydney Kingsford Smith

Sun 1/18

12:10 pm-4:45 pm

1 stop20h 35m

Washington, D.C. Dulles Intl

Sat 1/31

7:45 pm-6:20 am

1 stop42h 35m

$1,232

SydneyWashington, D.C.

SYD - IAD

SYDIAD

Sydney Kingsford Smith

Sat 12/27

11:20 am-6:50 pm

2 stops23h 30m

Washington, D.C. Dulles Intl

Sat 1/10

7:45 pm-6:20 am

1 stop42h 35m

$1,233

SydneyWashington, D.C.

SYD - IAD

SYDIAD

Sydney Kingsford Smith

Mon 1/12

8:40 pm-6:30 pm

1 stop37h 50m

Washington, D.C. Dulles Intl

Fri 1/23

10:20 pm-12:00 pm

2 stops45h 40m

$1,237

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, November 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 $1,040. If you aren’t able to travel to Washington, D.C. Dulles Intl Airport during the month of November, then flying in March is also cheap. Prices for this month can be found on momondo for an average of $1,054.

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.

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 $1,249 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 $1,071 on momondo.

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

You could potentially save up to 49% 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 December 2025, prices for Sydney to Washington, D.C. Dulles Intl Airport flights are approximately 25% 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

Fastest flight time

21h 35m

Direct flights

None
The fastest flight from Sydney to Washington, D.C. Dulles Intl Airport takes 21h 35m
There are no direct flights from Sydney to Washington, D.C. Dulles Intl Airport. There are no popular flight routes from Sydney to 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 21h 35m.

  • 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 $885Free CancellationRating
7.4
9,095 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
Alexandria
National Harbor
Gettysburg
Arlington
Winchester
Woodbridge
Waldorf
Tysons
Laurel
Colonial Beach
Silver Spring
Fredericksburg
Towson
Harpers Ferry
Rockville
Gaithersburg
Reston
Manassas
Sterling
Fairfax

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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