How long is the flight from Sydney to Washington, D.C. Dulles Intl Airport?

A quick flight from Sydney to Washington, D.C. Dulles Intl Airport can take about 21h 06m. Air Canada provides one of the quickest options available for as low as $1,063. Airlines will cover a distance of 9737 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

What is the cheapest airline to fly from Sydney to Washington, D.C. Dulles Intl Airport round-trip?

Flying on United Airlines is currently your cheapest option to Washington, D.C. Dulles Intl Airport, with prices starting at $885. This flight start at 31% lower than the current average price 3 months from now.

What is the cheapest day to fly from Sydney to Washington, D.C. Dulles Intl Airport?

Travelers seeking maximum savings on their Sydney to Washington, D.C. Dulles Intl Airport flight should consider departing on Tuesday mornings when fares are most often at their lowest. Friday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. Dulles Intl Airport when rainfall is around 2.6 in.

If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

What is the cheapest day to fly round-trip from Sydney to Washington, D.C. Dulles Intl Airport?

Departing on a Monday is a good option for securing a great price. You can expect to save up to 89% when planning your travel around this day of the week.

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

February can be a great time to fly to Washington, D.C. Dulles Intl Airport from Sydney with a flight ticket averaging about $1,270. Cheapflights users have found deals in the month of February for as cheap as $641. The most expensive prices can be found in the month of December.

What is the cheapest time of day to fly from SYD to IAD?

When flying from Sydney to Washington, D.C. Dulles Intl Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 10% versus a flight at noon.

What airport do you fly from for flights from Sydney to Washington, D.C. Dulles Intl?

Located just 4.6 mi from the city center, Sydney Kingsford Smith is the airport most travelers will use when flying to Washington, D.C. Dulles Intl from Sydney. Booking flights from Kingsford Smith (SYD) to Washington, D.C. Dulles Intl should be relatively easy as there are 0 daily outbound flights to Washington, D.C. Dulles Intl from 1 airline.

Can I find deals for flights from Sydney to Dulles Intl that include hotel bookings?

Yes. In addition to deals on Sydney to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Sydney to Dulles Intl?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Sydney to Dulles Intl.

Can I find deals for business class flights from Sydney to Dulles Intl?

Yes. Cheapflights offers flight deals from Sydney to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$475+ Flights from Sydney to Washington, D.C. Dulles Intl Airport

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

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 48 days in advance, which can save you up to 9% on flights from Sydney to Washington, D.C. Dulles Intl Airport compared to booking the week you need them. Waiting 48 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $887. For sooner than that we have options available in the next 3 days from $887.

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1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

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Cheapflights Tip: The best prices from Sydney Kingsford Smith to Washington, D.C. Dulles Intl are usually found in March or August, booked 27 days in advance, depart on a Tuesday or Monday and return on a Tuesday

Cheap flight deals from Sydney to Dulles Intl

Round-trip from	$812 (Booking.com)
One-way from	$475 (Kiwi.com)
Popular in	December
Cheapest in	March
Average price	$1,184

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

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One-way flight from Sydney Kingsford Smith to Washington, D.C. Dulles Intl

Search Deals

Highest demand for flights based on searches. 9% potential increase in price ($128 potential increase over avg. RT price).

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Cheapest flight prices on average. 2% potential price decrease ($29 potential savings vs. average RT price).

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Average for round-trip flights in September 2025

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Find flight deals from Sydney to Dulles Intl

Cheapest flights from Sydney to Dulles Intl
Explore the most affordable flight options available from Sydney to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

Tue 11/411:20 amSYD - IAD

2 stops49h 34mAir Canada

Mon 11/109:45 amIAD - SYD

2 stops55h 50mAir Canada

Deal found 9/9

$812

Thu 11/611:20 amSYD - IAD

2 stops25h 06mAir Canada

Tue 11/119:45 amIAD - SYD

2 stops31h 50mAir Canada

Deal found 9/11

$817

Sat 11/1511:20 amSYD - IAD

2 stops25h 34mAir Canada

Mon 12/810:11 pmIAD - SYD

2 stops43h 24mAir Canada

Deal found 9/10

$929

Sat 11/2911:20 amSYD - IAD

2 stops25h 40mAir Canada

Mon 12/810:11 pmIAD - SYD

2 stops43h 24mAir Canada

Deal found 9/10

$1,053

Thu 9/119:10 amSYD - IAD

2 stops24h 32mAmerican Airlines

Wed 9/2411:47 amIAD - SYD

2 stops29h 18mAmerican Airlines

Deal found 9/9

$1,057

Wed 9/1010:20 amSYD - IAD

2 stops25h 01mUnited Airlines

Sun 9/285:42 pmIAD - SYD

1 stop23h 18mUnited Airlines

Deal found 9/9

$1,060

Tue 11/411:20 amSYD - IAD

1 stop21h 06mUnited Airlines

Mon 11/1012:45 pmIAD - SYD

2 stops26h 15mUnited Airlines

Deal found 9/9

$1,063

Thu 11/611:20 amSYD - IAD

1 stop21h 06mUnited Airlines

Tue 11/116:03 pmIAD - SYD

1 stop23h 12mUnited Airlines

Deal found 9/11

$1,064

Thu 9/119:30 amSYD - IAD

1 stop25h 51mLufthansa

Wed 9/245:40 pmIAD - SYD

1 stop23h 20mLufthansa

Deal found 9/8

$1,073

Sun 10/2610:20 amSYD - IAD

2 stops44h 49mAir Canada

Sun 11/25:15 pmIAD - SYD

2 stops48h 20mAir Canada

Deal found 9/10

$1,096

Thu 9/119:55 amSYD - IAD

2 stops26h 20mAir New Zealand

Wed 9/244:10 pmIAD - SYD

2 stops28h 25mAir New Zealand

Deal found 9/8

$1,099

Best flights from Sydney to Dulles Intl
Discover carefully curated flight deals from Sydney to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 11, 2025.

Tue 11/411:20 amSYD - IAD

3 stops49h 34mAir Canada

Mon 11/109:45 amIAD - SYD

2 stops55h 50mAir Canada

Deal found 9/9

$867

Tue 11/411:20 amSYD - IAD

1 stop21h 06mUnited Airlines

Mon 11/1012:45 pmIAD - SYD

2 stops26h 15mUnited Airlines

Deal found 9/9

$1,063

Thu 10/29:30 amSYD - IAD

1 stop20h 53mLufthansa

Sat 10/1810:05 pmIAD - SYD

1 stop42h 50mLufthansa

Deal found 9/8

$1,073

Fri 1/3011:20 amSYD - IAD

2 stops25h 09mAir Canada

Fri 2/279:45 amIAD - SYD

2 stops31h 50mAir Canada

Deal found 9/10

$918

Wed 2/1812:10 pmSYD - IAD

1 stop20h 15mUnited Airlines

Sun 2/2210:05 pmIAD - SYD

1 stop43h 00mUnited Airlines

Deal found 9/9

$1,063

Thu 11/611:20 amSYD - IAD

1 stop21h 06mUnited Airlines

Tue 11/116:03 pmIAD - SYD

1 stop23h 12mUnited Airlines

Deal found 9/11

$1,064

Sun 10/2612:10 pmSYD - IAD

1 stop22h 16mUnited Airlines

Sun 11/26:39 pmIAD - SYD

1 stop22h 36mUnited Airlines

Deal found 9/10

$1,112

Last-minute flights from Sydney to Dulles Intl
Discover last-minute flight deals from Sydney to Dulles Intl. Data last updated September 11, 2025 and is based on user searches.

Thu 9/119:10 amSYD - IAD

2 stops24h 32mAmerican Airlines

Wed 9/2411:47 amIAD - SYD

2 stops29h 18mAmerican Airlines

Deal found 9/9

$1,057

Thu 9/119:30 amSYD - IAD

2 stops25h 52mUnited Airlines

Wed 9/245:40 pmIAD - SYD

1 stop23h 20mUnited Airlines

Deal found 9/9

$1,060

Thu 9/119:30 amSYD - IAD

1 stop25h 51mLufthansa

Wed 9/245:40 pmIAD - SYD

1 stop23h 20mLufthansa

Deal found 9/8

$1,073

Thu 9/119:55 amSYD - IAD

2 stops26h 20mAir New Zealand

Wed 9/244:10 pmIAD - SYD

2 stops28h 25mAir New Zealand

Deal found 9/8

$1,099

Wed 9/249:20 amSYD - IAD

3 stops39h 53mAir Canada

Wed 10/89:35 amIAD - SYD

3 stops31h 45mAir Canada

Deal found 9/11

$1,122

Fri 10/241:10 pmSYD - IAD

1 stop24h 41mAmerican Airlines

Fri 10/3111:41 amIAD - SYD

1 stop28h 14mAmerican Airlines

Deal found 9/8

$1,155

Sat 10/2511:20 amSYD - IAD

2 stops24h 47mUnited Airlines

Sat 11/16:59 pmIAD - SYD

1 stop23h 06mUnited Airlines

Deal found 9/10

$1,161

Sun 10/2610:20 amSYD - IAD

2 stops44h 49mAir Canada

Sun 11/25:15 pmIAD - SYD

2 stops48h 20mAir Canada

Deal found 9/10

$1,096

Sun 10/2611:20 amSYD - IAD

2 stops27h 33mAmerican Airlines

Sun 11/21:58 pmIAD - SYD

2 stops27h 02mAmerican Airlines

Deal found 9/10

$1,105

Sun 10/2610:30 amSYD - IAD

1 stop23h 04mUnited Airlines

Sun 11/23:59 pmIAD - SYD

2 stops25h 06mUnited Airlines

Deal found 9/10

$1,112

Sun 10/269:40 pmSYD - IAD

2 stops47h 43mAlaska Airlines

Sun 11/26:13 pmIAD - SYD

2 stops33h 32mAlaska Airlines

Deal found 9/10

$1,127

One-way flights from Sydney to Dulles Intl
Search for one-way flight options from Sydney to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated September 11, 2025.

Wed 10/155:20 pmSYD - IAD

3 stops54h 49mMultiple Airlines

Deal found 9/9

$475

Wed 9/174:20 pmSYD - IAD

3 stops38h 32mMultiple Airlines

Deal found 9/10

$538

Wed 10/154:40 pmSYD - IAD

1 stop38h 30mEtihad Airways

Deal found 9/9

$628

Thu 10/239:30 pmSYD - IAD

1 stop33h 40mEtihad Airways

Deal found 9/10

$629

Mon 12/1512:10 pmSYD - IAD

2 stops24h 44mUnited Airlines

Deal found 9/9

$640

Sat 11/152:05 pmSYD - IAD

2 stops25h 50mMultiple Airlines

Deal found 9/10

$672

Mon 12/155:45 pmSYD - IAD

2 stops28h 30mMultiple Airlines

Deal found 9/11

$687

Sun 9/214:20 pmSYD - IAD

3 stops45h 55mMultiple Airlines

Deal found 9/10

$690

Thu 10/236:45 pmSYD - IAD

2 stops44h 38mMultiple Airlines

Deal found 9/10

$718

Cheapflights Fare Finder

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

Tue 11/4

11:20 am-8:54 pm

3 stops49h 34m

Washington, D.C. Dulles Intl

Mon 11/10

9:45 am-9:35 am

2 stops55h 50m

$867

SydneyWashington, D.C.

SYD - IAD

SYDIAD

Sydney Kingsford Smith

Fri 1/30

11:20 am-8:29 pm

2 stops25h 09m

Washington, D.C. Dulles Intl

Fri 2/27

9:45 am-9:35 am

2 stops31h 50m

$918

SydneyWashington, D.C.

SYD - IAD

SYDIAD

Sydney Kingsford Smith

Tue 11/4

11:20 am-4:26 pm

1 stop21h 06m

Washington, D.C. Dulles Intl

Mon 11/10

12:45 pm-7:00 am

2 stops26h 15m

$1,063

SydneyWashington, D.C.

SYD - IAD

SYDIAD

Sydney Kingsford Smith

Wed 2/18

12:10 pm-4:25 pm

1 stop20h 15m

Washington, D.C. Dulles Intl

Sun 2/22

10:05 pm-9:05 am

1 stop43h 00m

$1,063

SydneyWashington, D.C.

SYD - IAD

SYDIAD

Sydney Kingsford Smith

Thu 11/6

11:20 am-4:26 pm

1 stop21h 06m

Washington, D.C. Dulles Intl

Tue 11/11

6:03 pm-9:15 am

1 stop23h 12m

$1,064

SydneyWashington, D.C.

SYD - IAD

SYDIAD

Sydney Kingsford Smith

Thu 10/2

9:30 am-4:23 pm

1 stop20h 53m

Washington, D.C. Dulles Intl

Sat 10/18

10:05 pm-7:55 am

1 stop42h 50m

$1,073

SydneyWashington, D.C.

SYD - IAD

SYDIAD

Sydney Kingsford Smith

Sun 10/26

12:10 pm-7:26 pm

1 stop22h 16m

Washington, D.C. Dulles Intl

Sun 11/2

6:39 pm-9:15 am

1 stop22h 36m

$1,112

SydneyWashington, D.C.

SYD - IAD

SYDIAD

Sydney Kingsford Smith

Wed 10/15

5:20 pm-9:09 am

3 stops54h 49m

$475

SydneyWashington, D.C.

SYD - IAD

SYDIAD

Sydney Kingsford Smith

Wed 9/17

4:20 pm-4:52 pm

3 stops38h 32m

$538

SydneyWashington, D.C.

SYD - IAD

SYDIAD

Sydney Kingsford Smith

Mon 11/3

11:20 am-8:54 pm

2 stops25h 34m

$730

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

Showing 1-10 of 15 results

Best time to book a flight from Sydney to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Sydney with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Sydney to Washington, D.C. Dulles Intl Airport

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

Booking 27 days in advance of your planned departure date is, on average, the best time to get cheap flights from Sydney to Washington, D.C. Dulles Intl Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Sydney to Washington, D.C. Dulles Intl Airport?

Currently, August is the cheapest month in which you can book a flight from Sydney to Washington, D.C. Dulles Intl Airport (average of $292). Flying from Sydney to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Dulles Intl

Peruse reviews from past customers who have flown with United Airlines from Sydney to Washington, D.C. Dulles Intl Airport to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

United Airlines

7.4

Good

8,937 reviews

Reviews

1 / 20

10.0

Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.

United Airlines

7.4

Good

8,937 reviews

United Airlines

7.4

Good

8,937 reviews

Reviews

1 / 20

10.0

Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.

Related info for your journey

What airport do you fly from for flights from Sydney to Washington, D.C. Dulles Intl?
Located just 4.6 mi from the city center, Sydney Kingsford Smith is the airport most travelers will use when flying to Washington, D.C. Dulles Intl from Sydney. Booking flights from Kingsford Smith (SYD) to Washington, D.C. Dulles Intl should be relatively easy as there are 0 daily outbound flights to Washington, D.C. Dulles Intl from 1 airline.
How long is the flight from Sydney to Washington, D.C. Dulles Intl Airport?
A quick flight from Sydney to Washington, D.C. Dulles Intl Airport can take about 21h 06m. Air Canada provides one of the quickest options available for as low as $1,063. Airlines will cover a distance of 9737 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.
What is the cheapest airline to fly from Sydney to Washington, D.C. Dulles Intl Airport round-trip?
Flying on United Airlines is currently your cheapest option to Washington, D.C. Dulles Intl Airport, with prices starting at $885. This flight start at 31% lower than the current average price 3 months from now.
Can I find deals for flights from Sydney to Dulles Intl that include hotel bookings?
Yes. In addition to deals on Sydney to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Sydney to Dulles Intl?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Sydney to Dulles Intl.
Can I find deals for business class flights from Sydney to Dulles Intl?
Yes. Cheapflights offers flight deals from Sydney to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Sydney to Washington, D.C. Dulles Intl Airport?
Currently, August is the cheapest month in which you can book a flight from Sydney to Washington, D.C. Dulles Intl Airport (average of $292). Flying from Sydney to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Woodbridge

Alexandria

Arlington

Tysons

Silver Spring

Springfield

Gaithersburg

Fredericksburg

Linthicum Heights

Fairfax

Falls Church

Owings Mills

Manassas

Rockville

Hanover

Oxon Hill

Laurel

Towson

Dundalk

National Harbor

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Top airline flying from Sydney to Dulles Intl

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$885	Average$1,473	FlexibilityNo cancel fee	On-time69%

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$475+ Cheap flights from Sydney (SYD) to Dulles Intl (IAD)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/15. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Sydney to Dulles Intl with Cheapflights

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3. Compare prices and book

Cheapflights Tip: The best prices from Sydney Kingsford Smith to Washington, D.C. Dulles Intl are usually found in March or August, booked 27 days in advance, depart on a Tuesday or Monday and return on a Tuesday

Cheap flight deals from Sydney to Dulles Intl

Round-trip from

One-way from

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Find flight deals from Sydney to Dulles Intl

Cheapest flights from Sydney to Dulles IntlExplore the most affordable flight options available from Sydney to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

Explore the most affordable flight options available from Sydney to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

Cheapflights Fare Finder

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

Best time to book a flight from Sydney to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Sydney with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Sydney to Washington, D.C. Dulles Intl Airport

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

What is the cheapest month to book a flight from Sydney to Washington, D.C. Dulles Intl Airport?

Reviews of airlines servicing Dulles Intl

Peruse reviews from past customers who have flown with United Airlines from Sydney to Washington, D.C. Dulles Intl Airport to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Sydney to Dulles Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly from for flights from Sydney to Washington, D.C. Dulles Intl?

How long is the flight from Sydney to Washington, D.C. Dulles Intl Airport?

What is the cheapest airline to fly from Sydney to Washington, D.C. Dulles Intl Airport round-trip?

Can I find deals for flights from Sydney to Dulles Intl that include hotel bookings?

How can I find direct flights from Sydney to Dulles Intl?

Can I find deals for business class flights from Sydney to Dulles Intl?

What is the cheapest month to book a flight from Sydney to Washington, D.C. Dulles Intl Airport?

Traveling to a place near Washington, D.C. Dulles Intl Airport?

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Sydney to Dulles Intl

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Top airline flying from Sydney to Dulles Intl

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Cheapest flights from Sydney to Dulles Intl
Explore the most affordable flight options available from Sydney to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.