What airlines fly to Sydney?

United Airlines, Qantas Airways and Air New Zealand are the top three most popular airlines that fly to Sydney from Washington, D.C. Dulles Intl Airport according to our data. United Airlines is the first choice among our users, with 63% of people opting to fly with this airline when traveling to Sydney. Keep in mind that there are 7 different airlines that fly to Sydney on a routine basis, so you have a few additional options to choose from.

Which layover airport has the shortest connection time from Washington, D.C. Dulles Intl Airport to Sydney?

Atlanta (ATL) has the shortest average layover time for this route: 1h 39m.

Which layover airport offers the lowest fares from Washington, D.C. Dulles Intl Airport to Sydney?

Flights via Atlanta (ATL) offer the lowest average round-trip price of $516.

What is the cheapest airline that flies from Washington, D.C. Dulles Intl to Sydney Kingsford Smith?

Delta, Turkish Airlines, and Alaska Airlines are the most popular carriers operating from Washington, D.C. Dulles Intl to Sydney Kingsford Smith

Which layover airport has the shortest travel time from Washington, D.C. Dulles Intl Airport to Sydney?

Flights connecting via Atlanta (ATL) have the shortest average one-way travel time: 8h 40m.

Which airport is the most popular layover for flights between Washington, D.C. Dulles Intl Airport and Sydney?

Dallas (DFW) was the most common stop: 62% of momondo users choosing 1-stop flights on this route connected there.

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 are updated daily.

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

As of May 2026, there are 7 operators available to choose from for flights 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 travel and health documents required for your trip to Sydney Kingsford Smith Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Sydney Kingsford Smith Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$541 Cheap Flights from Washington, D.C. Dulles Intl Airport to Sydney in 2026

Q: What is the typical price of a round-trip flight between Washington, D.C. Dulles Intl Airport and Sydney?

Prices are currently low for flights on this route. Typical prices usually range from $2,082 to $1,148. The lowest price recently found on this route was $1,015.

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

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One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

10:16 am - 6:50 am

IAD

SYD

30h 34m

2 stops

9:15 am - 12:44 am

SYD

IAD

29h 29m

2 stops

$1,015Delta

Mon, Jun 15 - Mon, Jun 29

11:15 am - 6:50 am

IAD

SYD

29h 35m

2 stops

9:15 am - 6:42 pm

SYD

IAD

23h 27m

2 stops

$1,016Delta

Mon, Jun 1 - Sun, Jun 7

11:15 am - 6:50 am

IAD

SYD

29h 35m

2 stops

9:15 am - 6:04 pm

SYD

IAD

22h 49m

2 stops

$1,065Delta

Mon, Jun 1 - Thu, Jul 23

8:28 am - 6:50 am

IAD

SYD

32h 22m

2 stops

9:15 am - 6:15 pm

SYD

IAD

23h 00m

2 stops

$1,066Delta

Fri, Aug 21 - Sun, Aug 30

7:10 am - 6:50 am

IAD

SYD

57h 40m

2 stops

9:15 am - 11:25 pm

SYD

IAD

28h 10m

2 stops

$1,081Delta

Sat, Jun 13 - Fri, Jun 19

10:11 am - 6:50 am

IAD

SYD

30h 39m

2 stops

9:15 am - 11:14 pm

SYD

IAD

27h 59m

2 stops

$1,115Delta

Fri, Jun 5 - Fri, Jun 12

7:15 am - 6:50 am

IAD

SYD

33h 35m

2 stops

9:15 am - 11:25 pm

SYD

IAD

28h 10m

2 stops

$1,116Delta

Fri, Jun 12 - Fri, Jun 19

11:07 am - 7:05 am

IAD

SYD

29h 58m

2 stops

12:00 pm - 11:17 pm

SYD

IAD

25h 17m

2 stops

$1,393Multiple Airlines

Wed, Jun 3 - Wed, Jun 10

8:28 am - 6:50 am

IAD

SYD

32h 22m

2 stops

9:15 am - 10:59 pm

SYD

IAD

27h 44m

2 stops

$1,415Delta

Wed, Aug 26 - Tue, Sep 8

11:10 am - 6:50 am

IAD

SYD

29h 40m

2 stops

9:15 am - 9:18 pm

SYD

IAD

26h 03m

2 stops

$1,416Delta

Wed, Aug 26 - Sun, Sep 27

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

Jun 15

IAD10:16 amWashington, D.C. Dulles Intl

30h 34m

2 stops

SYD6:50 amSydney Kingsford Smith

Jun 30

SYD9:15 amSydney Kingsford Smith

24h 20m

2 stops

IAD7:35 pmWashington, D.C. Dulles Intl

$1,015

Delta

Jun 1

IAD11:15 amWashington, D.C. Dulles Intl

29h 35m

2 stops

SYD6:50 amSydney Kingsford Smith

Jun 7

SYD9:15 amSydney Kingsford Smith

23h 27m

2 stops

IAD6:42 pmWashington, D.C. Dulles Intl

$1,016

Delta

Jun 1

IAD12:40 pmWashington, D.C. Dulles Intl

28h 10m

2 stops

SYD6:50 amSydney Kingsford Smith

Jul 25

SYD9:15 amSydney Kingsford Smith

27h 58m

2 stops

IAD11:13 pmWashington, D.C. Dulles Intl

$1,065

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

Our best Air Canada deals on Washington, D.C. Dulles Intl Airport to Sydney flight tickets

Air Canada

Jun 24

IAD3:45 pmWashington, D.C. Dulles Intl

25h 35m

2 stops

SYD7:20 amSydney Kingsford Smith

Jul 15

SYD9:20 amSydney Kingsford Smith

23h 41m

2 stops

IAD7:01 pmWashington, D.C. Dulles Intl

$1,417

Air Canada

Sep 22

IAD9:45 amWashington, D.C. Dulles Intl

31h 35m

2 stops

SYD7:20 amSydney Kingsford Smith

Oct 4

SYD10:20 amSydney Kingsford Smith

23h 40m

2 stops

IAD7:00 pmWashington, D.C. Dulles Intl

$1,482

Air Canada

Jun 3

IAD12:35 pmWashington, D.C. Dulles Intl

28h 45m

2 stops

SYD7:20 amSydney Kingsford Smith

Jun 10

SYD9:20 amSydney Kingsford Smith

25h 53m

2 stops

IAD9:13 pmWashington, D.C. Dulles Intl

$1,484

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Mon 6/15

10:16 am-6:50 am

2 stops30h 34m

Sydney Kingsford Smith

Mon 6/29

9:15 am-12:44 am

2 stops29h 29m

$1,015

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Mon 6/1

11:15 am-6:50 am

2 stops29h 35m

Sydney Kingsford Smith

Sun 6/7

9:15 am-6:42 pm

2 stops23h 27m

$1,016

Quickest round-trip

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Mon 6/1

11:15 am-6:50 am

2 stops29h 35m

Sydney Kingsford Smith

Thu 7/23

9:15 am-6:04 pm

2 stops22h 49m

$1,065

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Fri 8/21

8:28 am-6:50 am

2 stops32h 22m

Sydney Kingsford Smith

Sun 8/30

9:15 am-6:15 pm

2 stops23h 00m

$1,066

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Sat 6/13

7:10 am-6:50 am

2 stops57h 40m

Sydney Kingsford Smith

Fri 6/19

9:15 am-11:25 pm

2 stops28h 10m

$1,081

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Fri 6/5

10:11 am-6:50 am

2 stops30h 39m

Sydney Kingsford Smith

Fri 6/12

9:15 am-11:14 pm

2 stops27h 59m

$1,115

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Fri 6/12

7:15 am-6:50 am

2 stops33h 35m

Sydney Kingsford Smith

Fri 6/19

9:15 am-11:25 pm

2 stops28h 10m

$1,116

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Wed 6/3

11:07 am-7:05 am

2 stops29h 58m

Sydney Kingsford Smith

Wed 6/10

12:00 pm-11:17 pm

2 stops25h 17m

$1,393

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Wed 8/26

8:28 am-6:50 am

2 stops32h 22m

Sydney Kingsford Smith

Tue 9/8

9:15 am-10:59 pm

2 stops27h 44m

$1,415

Washington, D.C.Sydney

IAD - SYD

IADSYD

Washington, D.C. Dulles Intl

Wed 8/26

11:10 am-6:50 am

2 stops29h 40m

Sydney Kingsford Smith

Sun 9/27

9:15 am-9:18 pm

2 stops26h 03m

$1,416

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

Layovers

What is the typical price of a round-trip flight between Washington, D.C. Dulles Intl Airport and Sydney?

What is the cheapest month to fly to Sydney?

In general, November is the cheapest month to fly from Washington, D.C. Dulles Intl Airport to Sydney. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $1,510. If you are unable to visit Sydney during the month of November, then departing from Washington, D.C. Dulles Intl Airport during the month February is also very affordable. Most momondo users find prices during this month for around $1,553.

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

You are more likely to see cheaper flights to Sydney from Washington, D.C. Dulles Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Sydney for around $1,636 when searching 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 $758 on momondo.

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

You could potentially save up to 21% on your flight if you consider stops on a Washington, D.C. Dulles Intl Airport to Sydney flight.

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

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 round-trip 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

Fastest flight time	23h 07m
Direct flights	None

The fastest flight from Washington, D.C. Dulles Intl Airport to Sydney takes 23h 07m

There are no direct flights from Washington, D.C. Dulles Intl Airport to Sydney. There are no popular flight routes from Washington, D.C. Dulles Intl Airport to Sydney.

Search flight deals

Frequently asked questions about flying from Washington, D.C. Dulles Intl Airport to Sydney

How far is Washington, D.C. Dulles Intl to Sydney Kingsford Smith by plane?
The straight-line distance from Washington, D.C. Dulles Intl to Sydney Kingsford Smith is 9734.0 mi. Typically, this will take 23h 07m by plane in normal conditions.
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 are updated daily.
How many operators does momondo search for flights from Washington, D.C. Dulles Intl Airport to Sydney Kingsford Smith Airport?
As of May 2026, there are 7 operators available to choose from 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 that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check 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 travel and health documents required for your trip to Sydney Kingsford Smith Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Sydney Kingsford Smith Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular airline from Washington, D.C. Dulles Intl Airport to Sydney?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Washington, D.C. Dulles Intl Airport to Sydney is United Airlines (53% of total bookings). The next most popular airlines are Qantas Airways (13%), Air New Zealand (10%), and Air Canada (8%).

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
United Airlines	PriceFrom $377	Free Cancellation	Rating 7.4 9,694 reviews	Search United Airlines flights
Delta	PriceFrom $544	Free Cancellation	Rating 7.9 8,456 reviews	Search Delta flights
Fiji Airways	PriceFrom $719	Free Cancellation	Rating 8.1 240 reviews	Search Fiji Airways flights
Air Canada	PriceFrom $841	Free Cancellation	Rating 7.1 11,002 reviews	Search Air Canada flights
American Airlines	PriceFrom $855	Free Cancellation	Rating 7.1 11,667 reviews	Search American Airlines flights
Qantas Airways	PriceFrom $1,194	Free Cancellation	Rating 7.5 1,033 reviews	Search Qantas Airways flights
Air New Zealand	PriceFrom $1,285	Free Cancellation	Rating 8.0 640 reviews	Search Air New Zealand flights

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Why use momondo?

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

It is quick and easy to find Washington, D.C. to Sydney flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Sydney that suits you.

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

Yes. momondo enables you to select and highlight flights to Sydney from Washington, D.C. with this policy.

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?

If you are not ready to book a flight from Washington, D.C. to Sydney now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Sydney and let you know when they change.

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

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

What is the typical price of a round-trip flight between Washington, D.C. Dulles Intl Airport and Sydney?

What is the cheapest month to fly to Sydney?

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

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

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

What is the cheapest airline that flies from Washington, D.C. Dulles Intl to Sydney Kingsford Smith?

What airlines fly to Sydney?

Which airport is the most popular layover for flights between Washington, D.C. Dulles Intl Airport and Sydney?

Which layover airport offers the lowest fares from Washington, D.C. Dulles Intl Airport to Sydney?

Which layover airport has the shortest travel time from Washington, D.C. Dulles Intl Airport to Sydney?

Which layover airport has the shortest connection time from Washington, D.C. Dulles Intl Airport to Sydney?

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

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

Fastest flight time

Direct flights

Frequently asked questions about flying 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

Traveling to a place near Sydney?

Why use momondo?

An easier way to manage your Sydney trip

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