Cheap flights from Sydney to Washington, D.C. Dulles Intl Airport from $845

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 15/10. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — IAD
3 Sep — 10 Sep1
1 adult

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 Friday or Tuesday and return on a Tuesday

Cheap flight deals from Sydney to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Sydney (SYD) to Dulles Intl (IAD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 29 August 2025.

Round-trip from

$1,102

One-way from

$845

Popular in

December

Cheapest in

March

Average price

$1,741
Air Canada
  • Air Canada
  • 15/9-23/9
  • 4 total stops
  • 57h 30m total
  • Sydney to Washington, D.C.
15/10
  • 15/10
  • 3 total stops
  • 54h 49m total
  • Sydney to Washington, D.C.
Highest demand for flights based on searches. 8% potential increase in price ($299 potential increase over avg. return price).
Cheapest flight prices on average. 2% potential price decrease ($67 potential savings vs. average return price).
Average for round-trip flights in August 2025

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 29 August 2025.

Mon 15/909:20SYD - IAD
2 stops25h 45mAir Canada
Tue 23/909:35IAD - SYD
2 stops31h 45mAir Canada
Deal found 26/8$1,102
Mon 8/909:30SYD - IAD
1 stop29h 00mUnited Airlines
Wed 24/912:45IAD - SYD
1 stop28h 15mUnited Airlines
Deal found 29/8$1,260
Sat 25/1010:20SYD - IAD
2 stops44h 34mAir Canada
Thu 30/1009:00IAD - SYD
2 stops32h 35mAir Canada
Deal found 27/8$1,268
Wed 15/1010:30SYD - IAD
1 stop20h 53mUnited Airlines
Wed 22/1013:20IAD - SYD
2 stops27h 35mUnited Airlines
Deal found 28/8$1,275
Mon 13/1010:30SYD - IAD
2 stops26h 58mUnited Airlines
Mon 20/1018:58IAD - SYD
1 stop21h 57mUnited Airlines
Deal found 29/8$1,281
Tue 16/910:20SYD - IAD
1 stop22h 32mLufthansa
Wed 24/917:40IAD - SYD
1 stop23h 20mLufthansa
Deal found 27/8$1,295
Sun 12/1010:20SYD - IAD
2 stops25h 45mAir Canada
Sun 19/1009:35IAD - SYD
2 stops55h 45mAir Canada
Deal found 28/8$1,312
Wed 15/1010:20SYD - IAD
2 stops26h 05mAir Canada
Wed 22/1010:20IAD - SYD
2 stops31h 00mAir Canada
Deal found 28/8$1,314

Cheapflights Fare Finder

 
Customise your flight search to find flights from Sydney to Dulles Intl 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, Cheapflights users made 647,157 searches. Data last updated 29 August 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

Sydney

Fly to

Dulles Intl

Route

Depart

Return

Price

SydneyWashington, D.C.

SYD - IAD

SYDIAD

Sydney Kingsford Smith

Mon 15/9

09:20-21:05

2 stops25h 45m

Washington, D.C. Dulles Intl

Tue 23/9

09:35-07:20

2 stops31h 45m

$1,102

SydneyWashington, D.C.

SYD - IAD

SYDIAD

Sydney Kingsford Smith

Tue 4/11

11:20-20:54

2 stops25h 34m

Washington, D.C. Dulles Intl

Tue 18/11

09:45-09:35

2 stops31h 50m

$1,102

SydneyWashington, D.C.

SYD - IAD

SYDIAD

Sydney Kingsford Smith

Thu 23/10

10:20-21:05

2 stops49h 45m

Washington, D.C. Dulles Intl

Thu 30/10

09:45-08:35

2 stops31h 50m

$1,102

SydneyWashington, D.C.

SYD - IAD

SYDIAD

Sydney Kingsford Smith

Mon 8/9

09:30-00:30

1 stop29h 00m

Washington, D.C. Dulles Intl

Wed 24/9

12:45-07:00

1 stop28h 15m

$1,260

SydneyWashington, D.C.

SYD - IAD

SYDIAD

Sydney Kingsford Smith

Tue 16/9

09:20-09:38

2 stops38h 18m

Washington, D.C. Dulles Intl

Wed 24/9

14:25-07:20

2 stops26h 55m

$1,260

SydneyWashington, D.C.

SYD - IAD

SYDIAD

Sydney Kingsford Smith

Sat 25/10

10:20-15:54

2 stops44h 34m

Washington, D.C. Dulles Intl

Thu 30/10

09:00-08:35

2 stops32h 35m

$1,268

SydneyWashington, D.C.

SYD - IAD

SYDIAD

Sydney Kingsford Smith

Mon 8/9

09:10-22:48

2 stops27h 38m

Washington, D.C. Dulles Intl

Wed 24/9

11:47-07:05

2 stops29h 18m

$1,275

SydneyWashington, D.C.

SYD - IAD

SYDIAD

Sydney Kingsford Smith

Wed 15/10

17:20-09:09

3 stops54h 49m

$845

SydneyWashington, D.C.

SYD - IAD

SYDIAD

Sydney Kingsford Smith

Tue 14/10

10:20-21:05

2 stops25h 45m

$892

SydneyWashington, D.C.

SYD - IAD

SYDIAD

Sydney Kingsford Smith

Wed 15/10

16:40-16:10

1 stop38h 30m

$953

Flights are sorted by cheapest return flights first.

Deals found on 28/8

Showing 1-10 of 15 results
1
2

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 return 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?

Use this chart to determine the optimal time to book a return flight from Sydney to Dulles Intl. Price data was last updated on 22 August 2025.

To ensure you get the cheapest price possible for a flight from Sydney to Washington, D.C. Dulles Intl Airport, you should look to book at least 27 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, February is the cheapest month in which you can book a flight from Sydney to Washington, D.C. Dulles Intl Airport (average of $1,013). Flying from Sydney to Washington, D.C. Dulles Intl Airport in December is currently the most expensive (average of $1,608). 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.

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

Find hourly flight availability from Sydney to Dulles Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 29 August 2025.

It’s typically best to fly out from Sydney to Washington, D.C. Dulles Intl Airport in the morning. Doing so could potentially save you 10% on the flight price compared to flying at midday, which is usually more expensive.

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

Use this chart to determine the cheapest time to fly return from Sydney to Dulles Intl. Price data was last updated on 16 December 2024.

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

How much does it cost for a return flight from Sydney to Washington, D.C. Dulles Intl Airport?

Reviews of airlines servicing Dulles Intl

Get insights into the airlines that provide service to Dulles Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Dulles Intl. Reviews last updated 29 August 2025.
Read reviews from past customers who have flown with Air New Zealand, Qantas Airways, andVirgin Australia from Sydney to Washington, D.C. Dulles Intl Airport. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Food

7.3

Overall

8.0

Boarding

8.2

Crew

8.5

Entertainment

7.4

Comfort

8.0

Reviews

1 / 20
6.0
Good

Anonymous,July 2025

AKL - SFO

Flight was delayed an hour. We had just flown Air NZ on a 12- hour flight from AKL so the extra delay on this connecting flight wasn’t welcomed.

Food

7.3

Overall

8.0

Boarding

8.2

Crew

8.5

Entertainment

7.4

Comfort

8.0

Reviews

1 / 20
6.0
Good

Anonymous,July 2025

AKL - SFO

Flight was delayed an hour. We had just flown Air NZ on a 12- hour flight from AKL so the extra delay on this connecting flight wasn’t welcomed.

Food

7.3

Overall

8.0

Boarding

8.2

Crew

8.5

Entertainment

7.4

Comfort

8.0

Reviews

1 / 20
6.0
Good

Anonymous,July 2025

AKL - SFO

Flight was delayed an hour. We had just flown Air NZ on a 12- hour flight from AKL so the extra delay on this connecting flight wasn’t welcomed.

Food

7.3

Overall

8.0

Boarding

8.2

Crew

8.5

Entertainment

7.4

Comfort

8.0

Reviews

1 / 20
6.0
Good

Anonymous,July 2025

AKL - SFO

Flight was delayed an hour. We had just flown Air NZ on a 12- hour flight from AKL so the extra delay on this connecting flight wasn’t welcomed.

Food

7.3

Overall

8.0

Boarding

8.2

Crew

8.5

Entertainment

7.4

Comfort

8.0

Reviews

1 / 20
6.0
Good

Anonymous,July 2025

AKL - SFO

Flight was delayed an hour. We had just flown Air NZ on a 12- hour flight from AKL so the extra delay on this connecting flight wasn’t welcomed.

Food

7.3

Overall

8.0

Boarding

8.2

Crew

8.5

Entertainment

7.4

Comfort

8.0

Reviews

1 / 20
6.0
Good

Anonymous,July 2025

AKL - SFO

Flight was delayed an hour. We had just flown Air NZ on a 12- hour flight from AKL so the extra delay on this connecting flight wasn’t welcomed.

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?

    Sydney Kingsford Smith (SYD), located 7.5 km from the city centre, is the airport you fly out of when you book flights from Sydney to Washington, D.C. Dulles Intl. 7 airlines have flights from Kingsford Smith to Washington, D.C. Dulles Intl on a regular basis. Booking flights from Sydney Kingsford Smith to Washington, D.C. Dulles Intl should not be difficult; the airport handles an average of 0 outbound flights to Washington, D.C. Dulles Intl per day.

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

    Departing from Sydney to Washington, D.C. Dulles Intl Airport will take you 25h 45m. The distance from Sydney to Washington, D.C. Dulles Intl Airport is about 15670 km.

  • What are the cheapest airlines flying from Sydney to Washington, D.C. Dulles Intl Airport round-trip?

    Our cheapest airline available from Sydney to Washington, D.C. Dulles Intl Airport is American Airlines. Our recent data shows that you can find tickets from as low as $628 on this airline. Additional options worth looking into are Qantas Airways and Air Canada, starting at $1,288 and $1,298 round-trip. American Airlines is currently priced 68% below the average price you’ll pay for this route.

  • 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 holiday 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, February is the cheapest month in which you can book a flight from Sydney to Washington, D.C. Dulles Intl Airport (average of $1,013). Flying from Sydney to Washington, D.C. Dulles Intl Airport in December is currently the most expensive (average of $1,608). 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

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

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Linthicum Heights

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Fly from Sydney to Dulles Intl on these airlines

Choose from the following airlines for your flight from Sydney to Dulles Intl. Flights are based on user searches made on Cheapflights and were last updated on 29 August 2025.

Top 7 airlines flying from Sydney to Dulles Intl

Discover the top 7 airlines that operate flights from Sydney to Dulles Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 647,157 searches. Data last updated 29 August 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$628Average$1,615FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Qantas AirwaysCheapest$1,288Average$1,630FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights
Air CanadaCheapest$1,298Average$1,832FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Air New ZealandCheapest$1,521Average$1,718FlexibilityNo cancel feeOn-time78%
Search Air New Zealand flights
United AirlinesCheapest$1,752Average$2,204FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
ANACheapest$1,891Average$2,069FlexibilityNo cancel feeOn-time80%
Search ANA flights
Virgin AustraliaCheapest$2,010Average$2,574FlexibilityNo cancel feeOn-time80%
Search Virgin Australia flights

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How does Cheapflights help users find flights from Sydney to Dulles Intl?

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Not ready to book yet? You can track prices for flights from Sydney to Dulles Intl on Cheapflights with our Price Alert feature and get notified when better prices are available.

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