Cheap flights from Washington, D.C. Dulles Intl Airport to Sydney from $437
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 8/10. 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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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 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, April 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 $927. If you are unable to visit Sydney during the month of April, 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 $958.
What is the cheapest day to depart on your flight to Sydney?
The cheapest day to depart from Washington, D.C. Dulles Intl Airport to Sydney is on a Tuesday when prices can be found for as low as $1,353. The most expensive day to fly to Sydney is Friday, with ticket prices averaging around $1,485.
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 at noon. momondo users have found flights departing from Washington, D.C. Dulles Intl Airport to Sydney at noon for as low as $1,219. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to Sydney are more costly in the evening, with an average ticket price of $1,464. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.
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 weeks ahead of your departure date. In general, you can expect to find flights to Sydney for around $1,289 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 $1,098 on momondo.
Can stopping save me money on Washington, D.C. Dulles Intl Airport to Sydney flights?
You could potentially save up to 32% 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?
As of June 2025, prices for Washington, D.C. Dulles Intl Airport to Sydney flights are approximately 51% cheaper when compared to flights at the same time last year.
What is the cheapest airline that flies from Washington, D.C. Dulles Intl to Sydney Kingsford Smith?
Delta, Qantas Airways, and ANA are the most popular carriers operating from Washington, D.C. Dulles Intl to Sydney Kingsford Smith
What airlines fly to Sydney?
United Airlines, American Airlines and Air Canada 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 37% 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.
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
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 21h 57m 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 June 2025, 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 (34% of total bookings). The next most popular airlines are American Airlines (32%), Air Canada (15%), and Qantas Airways (12%).
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 | ||
|---|---|---|---|---|---|
| PriceFrom $827 | Free Cancellation | Rating 7.5 860 reviews | |||
| PriceFrom $830 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $852 | Free Cancellation | Rating 8.0 7,964 reviews | |||
| PriceFrom $1,015 | Free Cancellation | Rating 7.1 9,568 reviews | |||
| PriceFrom $1,200 | Free Cancellation | Rating 7.4 8,810 reviews | |||
| PriceFrom $1,294 | Free Cancellation | Rating 8.0 485 reviews | |||
| PriceFrom $1,370 | Free Cancellation | Rating 8.3 886 reviews |
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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.