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Cheap flights from Washington, D.C. Dulles Intl Airport to Sydney from $788

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 2/8. 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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Find the cheapest flights from Washington, D.C. Dulles Intl Airport to Sydney

Cheap return flights

These are some of the best return flight deals from Washington, D.C. Dulles Intl Airport to Sydney that have been recently found on momondo from popular airlines, departing in the coming months.
Delta Logo
15:00 - 06:35IAD-SYD
25h 35m2 stops
Delta Logo
10:25 - 21:13SYD-IAD
25h 48m2 stops
$1,465Delta
Find Deal
Tue, 23 Sep - Sun, 12 Oct
Delta Logo
13:00 - 06:35IAD-SYD
27h 35m2 stops
Delta Logo
09:25 - 18:24SYD-IAD
22h 59m2 stops
$1,788Delta
Find Deal
Fri, 20 Jun - Wed, 9 Jul
Air New Zealand Logo
17:53 - 10:35IAD-SYD
26h 42m2 stops
Air New Zealand Logo
11:50 - 06:53SYD-IAD
33h 03m2 stops
$1,972Air New Zealand
Find Deal
Mon, 28 Jul - Sat, 9 Aug
ANA Logo
12:15 - 09:25IAD-SYD
31h 10m1 stop
ANA Logo
20:55 - 15:35SYD-IAD
32h 40m1 stop
$2,003ANA
Find Deal
Tue, 26 Aug - Tue, 9 Sep
Air New Zealand Logo
08:45 - 08:45IAD-SYD
34h 00m2 stops
Air New Zealand Logo
09:55 - 22:18SYD-IAD
26h 23m2 stops
$2,005Air New Zealand
Find Deal
Mon, 4 Aug - Wed, 13 Aug
ANA Logo
15:39 - 19:15IAD-SYD
37h 36m2 stops
ANA Logo
20:55 - 15:45SYD-IAD
32h 50m1 stop
$2,009ANA
Find Deal
Sun, 6 Jul - Sat, 19 Jul
Air Canada Logo
09:55 - 08:35IAD-SYD
31h 40m3 stops
Air Canada Logo
11:20 - 07:35SYD-IAD
36h 15m2 stops
$2,228Air Canada
Find Deal
Sun, 26 Oct - Mon, 10 Nov
Air Canada Logo
09:45 - 07:20IAD-SYD
31h 35m2 stops
Air Canada Logo
09:20 - 21:05SYD-IAD
25h 45m2 stops
$2,278Air Canada
Find Deal
Sun, 21 Sep - Sat, 4 Oct
United Airlines Logo
17:45 - 07:00IAD-SYD
23h 15m1 stop
United Airlines Logo
09:30 - 20:55SYD-IAD
25h 25m1 stop
$2,433United Airlines
Find Deal
Wed, 9 Jul - Tue, 5 Aug
United Airlines Logo
17:45 - 07:00IAD-SYD
23h 15m1 stop
United Airlines Logo
09:30 - 18:52SYD-IAD
23h 22m2 stops
$2,439United Airlines
Find Deal
Wed, 9 Jul - Mon, 4 Aug

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

Our best Delta deals on Washington, D.C. Dulles Intl Airport to Sydney flight tickets
Delta
23 Sept
IAD15:00Washington, D.C. Dulles Intl
25h 35m
2 stops
SYD06:35Sydney Kingsford Smith
12 Oct
SYD10:25Sydney Kingsford Smith
25h 48m
2 stops
IAD21:13Washington, D.C. Dulles Intl
Delta
20 June
IAD13:00Washington, D.C. Dulles Intl
27h 35m
2 stops
SYD06:35Sydney Kingsford Smith
9 July
SYD09:25Sydney Kingsford Smith
22h 59m
2 stops
IAD18:24Washington, D.C. Dulles Intl
Delta
9 June
IAD06:20Washington, D.C. Dulles Intl
34h 15m
2 stops
SYD06:35Sydney Kingsford Smith
2 July
SYD09:25Sydney Kingsford Smith
27h 54m
2 stops
IAD23:19Washington, D.C. Dulles Intl

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

Our best Qantas Airways deals on Washington, D.C. Dulles Intl Airport to Sydney flight tickets
Qantas Airways
21 Sept
IAD17:36Washington, D.C. Dulles Intl
23h 19m
1 stop
SYD06:55Sydney Kingsford Smith
6 Oct
SYD13:10Sydney Kingsford Smith
24h 12m
1 stop
IAD22:22Washington, D.C. Dulles Intl
Qantas Airways
3 Aug
IAD08:10Washington, D.C. Dulles Intl
31h 55m
1 stop
SYD06:05Sydney Kingsford Smith
20 Aug
SYD12:10Sydney Kingsford Smith
20h 46m
1 stop
IAD18:56Washington, D.C. Dulles Intl
Qantas Airways
1 Sept
IAD18:04Washington, D.C. Dulles Intl
22h 51m
1 stop
SYD06:55Sydney Kingsford Smith
30 Sept
SYD12:10Sydney Kingsford Smith
24h 20m
1 stop
IAD22:30Washington, D.C. Dulles Intl

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 cheapest month to fly to Sydney?

The month of February is, on average, the cheapest month to fly to Sydney from Washington, D.C. Dulles Intl Airport, with most prices found around $1,436. If you aren’t able to travel to Sydney during the month of February, then flying in April is also cheap. Prices for this month can be found on momondo for an average of $1,447.

What is the cheapest day to depart on your flight to Sydney?

Our data shows that Tuesday is the least expensive day to fly to Sydney. Tickets to fly out on this day can be as low as $2,151. The most expensive day to fly to Sydney is Thursday, with ticket prices averaging around $2,401.

What is the cheapest time of day to depart on your flight to Sydney?

According to our data, the cheapest time of day to fly to Sydney is in the morning. momondo users have found flights departing from Washington, D.C. Dulles Intl Airport to Sydney in the morning for as low as $2,180. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are $3,023 on average. Flights to Sydney from Washington, D.C. Dulles Intl Airport in the evening are generally more expensive because this time of day is more convenient for travellers’ schedules.

How far in advance should I book a flight to Sydney?

You are more likely to see cheaper flights to Sydney from Washington, D.C. Dulles Intl Airport when booking 19 weeks ahead of your departure date. In general, you can expect to find flights to Sydney for around $2,039 when searching 19 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 $1,705 on momondo.

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

As of April 2025, prices for Washington, D.C. Dulles Intl Airport to Sydney flights are approximately 50% cheaper when compared to flights at the same time last year.

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 return 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

Best price found

$788

Fastest flight time

21h 38m

Direct flights

None

Airports in Sydney

1 airport
The best one-way flight to Sydney from Washington, D.C. Dulles Intl Airport in the past 72 hours is $788. The best return flight deal from Washington, D.C. Dulles Intl Airport to Sydney found on momondo in the last 72 hours is $1,465.
The fastest flight from Washington, D.C. Dulles Intl Airport to Sydney takes 21h 38m
There are no direct flights from Washington, D.C. Dulles Intl Airport to Sydney. Popular non-direct route for this connection is Washington, D.C. Dulles Intl Airport - Sydney Kingsford Smith Airport.
There is 1 airport near Sydney: Sydney Kingsford Smith (SYD)

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

    There are 15665.3 km between Washington, D.C. Dulles Intl and Sydney Kingsford Smith. Flights usually cover this in 21h 38m, depending on flying conditions and air traffic around both airports.

  • 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 refresh 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 offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and stopovers. It is recommended that you verify 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 necessary travel and health documents for your Sydney Kingsford Smith Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's licence and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • 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
Air CanadaPriceFrom $1,871Free cancellationRating
7.0
9,244 reviews
Search Air Canada flights
United AirlinesPriceFrom $2,240Free cancellationRating
7.4
8,696 reviews
Search United Airlines flights

Travelling to a place near Sydney?

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

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Washington, D.C. to Sydney for you.

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

Yes. All flights to Sydney from Washington, D.C. on momondo can be compared and filtered by various policies on offer, including flexible booking.

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?

Price alerts on flights to Sydney from Washington, D.C. are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.


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