IAD - SYD

$527 Find Cheap Flights from Washington Dulles Airport to Sydney

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Dulles Intl to Sydney departing on 8/31. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Sydney

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Sydney.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Sydney.
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Everything you should know

Cheapest round-trip
$1,058
Typical prices: $2,007-$1,343
Multiple Airlines
Wed 5/27Wed 6/3
IAD - SYD • 3 stops
Cheapest one-way
$527
Typical prices: $899-$1,036
Multiple Airlines
Mon 8/31
IAD - SYD • 2 stops
Top airlines
Cheapest • from $1,441 (round-trip)
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
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Airline reviews
Airline reviews
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Nonstop flights
Not available
There are currently no direct flights between Dulles Intl and Sydney. You'll need at least 1 connection.
Insights
Insights
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Insights
Top layover airports
Cheapest • Avg $300 (round-trip)
Shortest trip • 7h 58m (one-way)
Insights
Insights
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Insights
When to book
in advance
Our data shows that travelers who book at least 7 weeks in advance save around 34% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 8% price drop
Most popular
Good to know
Good to know
+1
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Good to know
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Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Dulles Intl to Sydney (IAD-SYD)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Dulles Intl to Sydney that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Dulles Intl to Sydney

Wed, May 27 - Wed, Jun 3
Multiple Airlines Logo
11:07 am - 11:50 am
IAD
-
SYD
34h 43m
3 stops
Multiple Airlines Logo
1:20 pm - 8:12 am
SYD
-
IAD
32h 52m
3 stops
$1,058Multiple Airlines
Wed, May 13 - Mon, May 25
Multiple Airlines Logo
7:40 am - 11:50 am
IAD
-
SYD
38h 10m
3 stops
Multiple Airlines Logo
1:15 pm - 10:12 am
SYD
-
IAD
34h 57m
3 stops
$1,230Multiple Airlines
Wed, May 27 - Wed, Jun 3
Multiple Airlines Logo
11:07 am - 7:05 am
IAD
-
SYD
29h 58m
2 stops
Multiple Airlines Logo
9:10 am - 8:12 am
SYD
-
IAD
37h 02m
2 stops
$1,365Multiple Airlines
Tue, Sep 22 - Tue, Oct 6
Turkish Airlines Logo
1:20 pm - 7:10 pm
IAD
-
SYD
39h 50m
2 stops
Turkish Airlines Logo
10:05 pm - 11:35 am
SYD
-
IAD
52h 30m
2 stops
$1,441Turkish Airlines
Tue, Sep 22 - Tue, Oct 6
Turkish Airlines Logo
1:20 pm - 7:10 pm
IAD
-
SYD
39h 50m
2 stops
Turkish Airlines Logo
10:05 pm - 11:35 am
SYD
-
IAD
52h 30m
2 stops
$1,442Turkish Airlines
Tue, Sep 22 - Tue, Oct 6
Turkish Airlines Logo
1:20 pm - 7:10 pm
IAD
-
SYD
39h 50m
2 stops
Turkish Airlines Logo
10:05 pm - 7:50 pm
SYD
-
IAD
36h 45m
2 stops
$1,443Turkish Airlines
Tue, Sep 8 - Tue, Sep 15
Turkish Airlines Logo
1:20 pm - 7:10 pm
IAD
-
SYD
39h 50m
2 stops
Turkish Airlines Logo
9:05 pm - 11:35 am
SYD
-
IAD
52h 30m
2 stops
$1,444Turkish Airlines
Tue, Sep 22 - Tue, Oct 6
Turkish Airlines Logo
9:45 pm - 7:10 pm
IAD
-
SYD
31h 25m
2 stops
Turkish Airlines Logo
10:05 pm - 7:50 pm
SYD
-
IAD
36h 45m
2 stops
$1,458Turkish Airlines
Wed, Sep 9 - Fri, Sep 25
Turkish Airlines Logo
9:45 pm - 7:10 pm
IAD
-
SYD
31h 25m
2 stops
Turkish Airlines Logo
9:05 pm - 11:35 am
SYD
-
IAD
52h 30m
2 stops
$1,479Turkish Airlines
Mon, Aug 31 - Thu, Sep 10
Turkish Airlines Logo
1:20 pm - 7:10 pm
IAD
-
SYD
39h 50m
2 stops
Turkish Airlines Logo
9:05 pm - 7:50 pm
SYD
-
IAD
36h 45m
2 stops
$1,482Turkish Airlines
Booking Insights

KAYAK's insights & trends for Dulles Intl to Sydney flights

Get data-powered insights and trends into flights from Dulles Intl to Sydney to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Washington, D.C. Dulles Intl Airport to Sydney?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Washington, D.C. Dulles Intl Airport to Sydney departing in May.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Washington, D.C. Dulles Intl Airport to Sydney, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Washington, D.C. Dulles Intl Airport to Sydney is November, where tickets cost $1,510 (return) on average. On the other hand, the most expensive months are December and July, where the average cost of round-trip tickets is $2,258 and $1,657 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Washington, D.C. Dulles Intl Airport to Sydney, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Washington, D.C. Dulles Intl Airport to Sydney, you should book around 7 weeks before departure, which saves you about 34% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 26 weeks before departure.

Good to know

Low seasonApril
Cheapest flight$527
Best time to beat the crowds with an average 5% drop in price.
Most popular time to fly and prices are also 5% lower on average.
Flight from Washington Dulles Airport to Sydney

When to book flights from Dulles Intl to Sydney

Are your dates flexible? Find out the best times to travel from Dulles Intl to Sydney based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Washington Dulles Airport to Sydney flights

  • Which airlines are suitable for families flying from Washington Dulles Airport to Sydney?

    Families with children traveling from Washington Dulles Airport to Sydney should consider traveling with Qantas Airways. They provide activity packs filled with games, puzzles, coloring books, and other fun items to keep young passengers entertained during the flight. Qantas Airways also offers a dedicated children's inflight entertainment section featuring a variety of movies, TV shows, and music suitable for different age groups.

  • Which airline should I book for an unaccompanied minor flying from Washington Dulles Airport to Sydney?

    United Airlines is a great option for an unaccompanied kid traveling from Washington Dulles Airport to Sydney. According to United Airlines regulation, a child between the ages of 5 and 15 are permitted to fly alone as long as they have parental or guardian consent and can show identification. A passport or a driver's license with a current photo is required from parents or guardians. In addition, parents or guardians must complete the Unaccompanied Minors Form in person at the airport of departure.

  • Which airline from Washington Dulles Airport to Sydney is ideal for persons with special needs?

    If you have special needs and require extra assistance, fly on Qantas Airways from Washington Dulles Airport to Sydney. The airline assists passengers who require mobility aid, including wheelchair assistance, during boarding and disembarkation. They provide accessible seating options and priority boarding for passengers who need extra time or assistance. Passengers with visual impairments can request assistance with Braille safety cards and cabin announcements.

  • Which airlines offer business and first-class flights from Washington Dulles Airport to Sydney?

    Business and first-class flights are available from Washington Dulles Airport to Sydney on United Airlines and Qantas Airways. United Airlines provides pre-departure refreshments, premium entertainment, and bedding from Saks Fifth Avenue. Qantas Airways offers first-class, business-class, and premium economy flights with great service, gourmet meals, and an extensive wine list.

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

    In the last 3 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to Sydney was $527 for a one-way ticket and $1,058 for a round-trip.

  • Do I need a passport to fly between Washington Dulles Airport and Sydney?

    Yes, you'll most likely have to show a valid passport before boarding the plane in Washington Dulles Airport and on arrival in Sydney.

  • Which airports will I be using when flying from Washington Dulles Airport to Sydney?

    When flying out of Washington Dulles Airport you will be using Washington, D.C. Dulles Intl. You will be landing at Sydney, also known as Sydney Kingsford Smith.

  • Which aircraft models fly most regularly from Washington Dulles Airport to Sydney?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Washington Dulles Airport to Sydney?

    SkyTeam, oneworld, and Star Alliance are the airline alliances operating flights between Washington Dulles Airport and Sydney, with SkyTeam being the most commonly used for this route.

  • What is the most popular layover when flying to Sydney from Washington Dulles Airport?

    Dallas is the most popular layover city among KAYAK users traveling from Washington Dulles Airport to Sydney.

  • Which is the best airline for flights from Washington, D.C. to Sydney, Fiji Airways or Air New Zealand?

    The two airlines most popular with KAYAK users for flights from Washington, D.C. to Sydney are Fiji Airways and Air New Zealand. With an average price for the route of $768 and an overall rating of 8.1, Fiji Airways is the most popular choice. Air New Zealand is also a great choice for the route, with an average price of $1,874 and an overall rating of 8.0.

  • How does KAYAK find such low prices on flights from Washington Dulles Airport to Sydney?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington Dulles Airport to Sydney.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington Dulles Airport to Sydney?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Sydney from Washington Dulles Airport is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Washington Dulles Airport to Sydney?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Sydney with an airline and back to Washington Dulles Airport with another airline. Booking your flights between Washington Dulles Airport and SYD can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington Dulles Airport to Sydney?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Sydney from Washington Dulles Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Washington, D.C. Dulles Intl Airport to Sydney

  • Passengers flying from Washington Dulles Airport (IAD) to Sydney will land at Sydney Airport (SYD). Sydney Airport (SYD) is a base for Qantas Airways, which offers competitive prices and flexible travel policies for flights from IAD to SYD.
  • You can get flights from Washington Dulles Airport to Sydney with a layover en route. The layovers differ with your airline, with most stopping at their hubs or base of operation. United Airlines and American Airlines flights have a layover at Los Angeles (LAX) and San Francisco (SFO), respectively, while ANA flights stop in Tokyo (HND).
  • Qantas Airways provides sustainable flights to Sydney from Washington Dulles Airport. Qantas Airways prioritizes sustainability in its operations and invest in eco-friendly aircraft technology. The airline is committed to reducing greenhouse gas emissions, improving fuel efficiency, and investing in sustainable aviation fuels. They prioritize aircraft fleet renewal with more fuel-efficient and lower-emission planes.
  • United Airlines has pet-friendly policies for flights from Washington Dulles Airport to Sydney. Pets are permitted in the cabin or cargo hold in an authorized kennel or carrier. The kennel or carrier should be leak-proof, well-ventilated, and have enough space for the pet. The carrier's maximum size and weight limits are 17 x 12.5 x 7.5 inches and 17 lb, respectively.
  • Public transport options from SYD to downtown Sydney include the train and bus. Train T8 runs every 5 minutes from the airport station to downtown Sydney. Murrays Coaches operates a bus that runs every hour from the Terminal 1 bus stop to downtown Sydney.

Reviews of the top 5 airlines serving from Dulles Intl to Sydney

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to Sydney. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Dulles Intl to Sydney? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
Air New ZealandOverall score based on 638 reviews
7.4Entertainment
7.4Food
8.2Boarding
8.5Crew
7.9Comfort
Airline reviews

Great airline service by the staff. I highly recommend it

10.0 ExcellentManish, Apr 2026
SFO - AKL
Read more Air New Zealand reviews

Great airline service by the staff. I highly recommend it

Needed more leg room. Leg rest and entertainment system box took up a lot of space and I'm not tall. Breakfast was good. Poor quality of the entertainment options.

Time to upgrade those planes so you can provide first class.

My experience with Underpricer was not great. The representative assigned to me did not tell me beforehand that selecting seats, which i could not do through ANZ, WOULD ADD SIGNIFICANT cost to my ticket (all flight segments were reg economy seats. The seat selections for the ticket, MCI-AKL, AKL-PER, PER-MCI, cost $284 USD. I WAS NOT TOLD AHEAD OF SELECTING SEATS chosen by the rep OF THE COSTS and never received an itemized invoice of the seat selections.). The costs of seat selection, an option solicited as a service, with no mention of costs, should have been disclosed to me prior to seat selection and certaily should have been itemized. For all I know, the $284 was not referred from the airline but made up and taken directly by Underpricer. Next, when i checked in, united couldnt find my ticket. This is probably why i didnt get a seat selection on that flight and couldnt check in online, despite Underpricer prompts to do so a week before departure, or at the kiosk at the airport. I had to wait for special help at the counter, then was told that because the flight segment, MCI-IAH, operated by United Airlines via the ANZ. ticket, had changed schedule slightly since I BOOKED MY FLIGHT, the MCI-IAH segment had been decoupled from the rest of the ticket because the IAH layover was now 12.5 hrs AND DID NOT QUALIFY AS A THROUGH FLIGHT TO AKL.. This meant my checked bag could not be checked through to AKL and id have to pick it up at IAH, THEN WAIT MOST OF the long layover WITH the large checked bag until ANZ counter in IAH OPENED for checkING just prior to the flight. Apparently, although underpricer had notified me of schedule changes, they did not update the ANZ TICKET, leading to this problem. Finallly, although I RECHECKED TH BAG IN At IAH 3.5-4 hours before the scheduled departure and the IAH-AKL segment was a direct flight, ANZ LOST MY bag and it took 4 days to find it and get it to me. Not fun.

The flight was smooth and on time. Entertainment options were lacking and there was no food, other than some very boring snacks.

A better selection of entertainment would have been nice. I found nothing that appealed to me as a middle-aged traveler. The flight attendants were gracious, helpful, and attentive. It also would have been nice to have more bathrooms as the flight was full and the plane was big.

Appreciated the ability to get an earlier flight home after flying in from in from Japan. No problem with boarding or crew service. The limited choice of snacks, compared to previous years. Aircraft seats seem to be getting harder and more uncomfortable all the time. Overall, happy to be home

Both my wife and I thoroughly enjoyed our return home from Tokyo to Auckland and onwards to Palmerston North. We would recommend using the Premier Business class for long-haul travel, any day. Well worth the extra cost. Cabin staff were exceptional, Thank you

Great service. Food could be improved but overall a very good airline

This flight was the second leg of a trip that began in Auckland, New Zealand. I was unable to find a way to select seats in advance. The boarding passes we were given in Auckland did not have seat assignments for the second flight. There was no way to check on it until personnel showed up at the gate in Los Angeles, immediately before boarding time. The flight was overbooked by one, and since I was traveling with my sister, we needed two seats. We waited in considerable anxiety for everyone else to board and when one person did not show up, we had to take whatever was left. At least we finally got on the flight although we were the very last to board. We were not able to sit together, of course.

Seats in Delta Main are unbelievably close to the seat in front of. Hard to get a backpack under the seat.

The flight was operated by Latam. The aircraft had a technical issue and the flight was delayed for the next day. They grounded other passengers to get their airplane assigned to my flight. Most of he ground staff don't speak English (Orlando Airport), but were very polite.The crew on the other hand could speak English and Portuguese. On board service was good.

The agent at check in and at the gate were less than thrilled to be at work. I'm not a fan of Kayak's placement on the plane. I got put in the middle seat and none of my preferences were used.

In ATL they have two sets of departure screens. Follow what is on your airline's departure board - the ATL Airport Authority departure board had completely incorrect details about the gate assignment for my flight, which would have made me miss boarding.

Flight was delayed it was hot while sitting on the plane, one engine was working on the plane until they had to do some jimmy rigging down the runway in order for the other engine to charge up. It was ridiculous

The flight was very good and the staff was very friendly and helpful!

The only thing I would say is we tried to get on a standby earlier flight, but with our fair we couldn’t. That seems senseless to leave with open seats..

Very easy to use and convenient, you can perform any action within the same portal

In a world of delays, Delta was on time both ways! Boarding was fast and efficient. Staff was friendly. AND wifi worked.

WiFi didn’t work. Flight delayed 3 hours Crew members were illiterate Seat lean back did not work.

PREMIUM ECONOMY - excellent !Brilliant new plane. Excellent tv catalogue. Good food. Good communication and service from all friend Australian crew. Good communication from captain. Best travel experience in years.

Very good overall. However, your choices of free movies was limited and there was no music Channel???

I couldn't hear all of the announcements. It was nice when they put them on the screen.

This was the worst flight I’ve been on. Getting on the plane where is was 30 degrees outside was hotter on board cabin must’ve been 33 degrees. This is a health hazard. They cannot be doing this to save on fuel. People could die from this!!. Fans and a/c was, off entertainment was off. Poor excuse given. Crew made the excuse that the system didn’t have enough power. They basically were operating on one engine to save on jet fuel till 3 hours later on cruising altitude and they then started the second engine. And finally the cabin was cooled. On a 7hour red eye flight this made it so uncomfortable and impossible to sleep.

My experience was great overall. Tanya was particularly friendly and helpful the entire trip. I was very pleased with her customer service skills. The plane was an older aircraft but the entire way was comfortable with barely any turbulence at all. Qantas should speed up its fleet renovation. Totally recommend using this airline.

Qantas is always subpar beyond comfy chairs for a domestic flight

I liked boarding the plane. The staff were rude, the food was appalling and the chairs the most uncomfortable I have ever experienced

an hour late, then had to disembark on back stairs and take 4 flights up to get to main airport. No warning, and difficulty for those with canes and poor knees.

Well my expórtenle with Qantas it wasn’t that good KLM from Bs Aires was delay Santiago Chile Qantas QF 028 was still in the airport but the crew didn’t opened the door for me soo I lost my fly And I stuck in the airport 13 hrs waiting for next fly by Latam Arline My question is can I have my money back for business class

It was ok, the additional baggage charges were a bit excessive given winter is a time for skiing. To have to pay $600 extra for skis was tantamount to robbery. Airlines should consider sporting goods as baggage. Likewise, they should consider increasing the number of bags allowed on international flights to known ski destinations.

Vegetarian selection could be better. Bread was too hard to chew.

Crew was friendly and competent. Food, wine, and entertainment were excellent except the raw tuna on the flight to Split. Recommend against serving that - at least as the only option. Many medical conditions do not allow people to eat raw fish.

United didn’t even try to hold the flight for me. They knew I had a tight connection and when I arrived at the gate less than 10 mins after final boarding the flight had already gone. The gate agent wasn’t even notified that I was on my way. She was told I wasn’t at the airport

Good quick flight on a small but comfortable plane. I'm 6'3 and had plenty of space.

The flight was delayed so we were dead tired, and after that the turbulence was horrible. I was very scared.

Wifi took a while to kick in and we had a maintenance issue that took over 40 mins at the gate in Washington before pulling back

Terrible. Our first time back on United for 10 years, the seats in Polaris class are small and uncomfortable. They have squished too many people in to get more $$$. The staff are not friendly and not wanting to accommodate. I asked for two salads rather than a main meal and was advised no we wont do that. Then asked what I would like for breakfast and given something else anyway. I will not be flying United International anytime soon.

Very good. Because of the delays with my previous flight, I missed my connection, but I was able to book another flight through the United app easily.

Food should be changed in menu Many muslims travels in this airlime they need to add one Halal meal

Was happy we finally got upgraded in 1st class. The seat getting old. The cushiness need some improvement.

I did not like anything because the flight was cancelled yesterday and I did not get to arrive on time in Toronto as I was rebooked with another airline. This caused me to be really stressed out as I am an individual with back injury and to be forced to stay longer in an airport to accommodate a change of airline and the transfers associated with it Due to this I am probably not going to book through your website to eliminate this potentially chaos in the future

shittiest airline in the hemisphere. To improve - start thinking you're flying people, not cattle

Easy boarding, inflight refreshments came on time and comfortable seat

Flight home was delayed multiple times, did not get home until 2am

My original booking was through AirCanada and unbeknownst to me they altered flights and providers which caused a complete disaster for checking in for my flights and seat assignments. The original gate agent in Auckland had me basically doing gymnastics to get onto the future flights and have my luggage follow me.

I checked a bag and there was only one agent to assist all customers with any issues.

Super experience. Earlier than schedule departure and arrival. Baggage handling was very good

Plane left an hour late, I missed my connection and my bow case was never even loaded on the plane in VA. I deal with this type of nonsense everytime I fly air canada.

Check in agent was very helpful and polite. He helped me board the earlier flight back home instead of waiting 2 hours at the airport for the next flight

Our flight was canceled at the last minute. Someone on the flight said the exact same thing happened to her the day before. I will say they helped us book a flight on another airline so that we could still make our vacation with little delay.

Everything you need to know for your flight from Dulles Intl to Sydney

Information on your arrival and departure airports