WAS - SYD

$384 Find Cheap Flights from Washington, D.C. 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 Washington, D.C. to Sydney departing on 4/19. 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.
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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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Cheap Flight Deals from Washington, D.C. to Sydney (WAS-SYD)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Washington, D.C. 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.

Recent round-trip flight deals from Washington, D.C. to Sydney

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from Washington, D.C. to Sydney.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
8:00 am - 6:35 amDCA-SYD
32h 35m1 stop
5:35 pm - 8:52 pmSYD-DCA
41h 17m1 stop
$818British Airways
Find Deal
Tue, May 20 - Tue, May 27
6:18 am - 6:35 amIAD-SYD
34h 17m2 stops
5:35 pm - 4:23 pmSYD-IAD
36h 48m2 stops
$823American Airlines
Find Deal
Tue, Apr 15 - Mon, Apr 28
5:35 pm - 9:00 amDCA-SYD
24h 25m1 stop
11:50 am - 12:50 amSYD-DCA
28h 00m1 stop
$873Qantas Airways
Find Deal
Mon, Mar 17 - Fri, Mar 28
5:20 pm - 6:35 amIAD-SYD
22h 15m1 stop
11:50 am - 4:20 pmSYD-IAD
19h 30m1 stop
$874Qantas Airways
Find Deal
Mon, Mar 17 - Fri, Mar 28
5:10 pm - 7:45 amDCA-SYD
23h 35m1 stop
10:05 am - 4:00 pmSYD-DCA
20h 55m1 stop
$932Delta
Find Deal
Sun, Mar 16 - Mon, Mar 24
3:00 pm - 6:35 amIAD-SYD
25h 35m2 stops
9:25 am - 12:10 amSYD-IAD
28h 45m2 stops
$937Delta
Find Deal
Sun, Jun 22 - Tue, Jul 15
9:55 am - 7:20 amIAD-SYD
31h 25m2 stops
9:20 am - 4:27 pmSYD-IAD
21h 07m1 stop
$1,386Air Canada
Find Deal
Tue, Jul 1 - Tue, Jul 15
5:20 pm - 7:20 amIAD-SYD
24h 00m1 stop
9:20 am - 4:17 pmSYD-IAD
20h 57m1 stop
$1,387Air Canada
Find Deal
Sun, Jun 8 - Mon, Jun 30
6:05 pm - 7:00 amBWI-SYD
22h 55m1 stop
9:30 am - 4:47 pmSYD-BWI
21h 17m1 stop
$1,447United Airlines
Find Deal
Fri, Jun 20 - Sun, Jul 13
1:10 pm - 7:00 amBWI-SYD
27h 50m2 stops
10:20 am - 5:27 pmSYD-BWI
21h 07m1 stop
$1,452United Airlines
Find Deal
Mon, Jun 23 - Wed, Jul 16

Flights from Washington, D.C. to Sydney - Travel Insights & Trends

Get data-powered insights and trends into flights from Washington, D.C. to Sydney to help you find the cheapest flights, the best time to fly and much more.
Find cheap flights to Sydney
Find cheap flights to Sydney

Planning a trip from Washington, D.C. to Sydney? KAYAK’s data-powered insights will help you find cheap flights. Learn the best time to fly, how early to book your ticket, and other tips to secure great prices.

What’s the cheapest day of the week to fly from Washington, D.C. to Sydney?

The average price of all round-trip flights from Washington, D.C. to Sydney clicked on KAYAK for each day over the last 12 months.
If you are looking for a flight deal from Washington, D.C. to Sydney, look for departures on Tuesdays and avoid leaving on a Monday, as it's usually the priciest day. When flying back from Sydney, Tuesday is the cheapest day to fly and Friday is the most expensive.

What is the cheapest month to fly from Washington, D.C. 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. 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. to Sydney is February, where tickets cost $933 (return) on average. On the other hand, the most expensive months are December and January, where the average cost of round-trip tickets is $1,841 and $1,546 respectively.

How far in advance should I book a flight from Washington, D.C. 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. 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. to Sydney, you should book around 3 weeks before departure. For the absolute cheapest price, our data suggests you should book 19 weeks before departure.

Good to know

Low season

September

High season

June

Cheapest flight

$384
Best time to beat the crowds but there is an average 4% increase in price.
Most popular time to fly and prices are also 2% lower on average.
Flight from Reagan Washington National Airport to Sydney

When to book flights from Washington, D.C. to Sydney

Are your dates flexible? Find out the best times to travel from Washington, D.C. 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 flights from Washington, D.C. to Sydney

  • What are the popular layovers for flights from Washington, D.C. to Sydney?

    Airlines with stopover options on Washington, D.C. to Sydney route stop in one or more cities. However, flight routes and layover durations vary among airlines. For this reason, consider checking the flight route before booking to avoid extended layovers. Most airlines have a layover in major cities, including Dallas, San Francisco, Houston, Vancouver, Los Angeles, Honolulu, Tokyo, Seoul, Beijing, New Delhi, Abu Dhabi, Doha, and Dubai.

  • What is the carry-on and checked luggage allowance for economy on cheap flights from Washington, D.C. to Sydney?

    Your carry-on and checked luggage policy depends on your airline. For ANA, the maximum dimensions for your carry-on are 22 x 16 x 10 inches. You can also bring another bag weighing up to 50 lb. If you book Air New Zealand, your carry-on shouldn’t exceed 22 x 14 x 9 inches. Your additional bag should weigh 50 lb at most. However, your bags must fit in the overhead cabin or beneath your seat.

  • What airlines offer sustainable travel from Washington, D.C. to Sydney?

    Singapore Airlines offers an eco-friendly journey on this route. These airlines cut food waste to achieve net zero carbon emissions by 2050. Cathay Pacific is committed to ensuring a greener environment by using sustainable aviation fuel to lower its carbon footprint.

  • What’s the best way to travel from SYD airport to downtown Sydney?

    One way to travel from SYD airport to downtown Sydney is to take the T3 or T8 trains to arrive in the city in around 17 minutes. If you take the N20 or 438X buses, you get to the city in approximately 25 minutes. A taxi or rental car offers a quick journey, about 15 minutes to the city.

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

    In the last 3 days, the lowest price for a flight from Washington, D.C. to Sydney was $384 for a one-way ticket and $818 for a round-trip.

  • Do I need a passport to fly between Washington, D.C. and Sydney?

    Yes

  • Which airports will I be using when flying from Washington, D.C. to Sydney?

    There are 2 airports in Washington, D.C. (Washington, D.C. Reagan-National and Washington, D.C. Dulles Intl.) and only 1 airport in Sydney (Sydney Kingsford Smith). The cheapest flights are generally found on the Reagan Washington National Airport to Sydney Kingsford Smith flight route.

  • Which aircraft models fly most regularly from Washington, D.C. to Sydney?

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

  • Which airline alliances offer flights from Washington, D.C. to Sydney?

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

  • What is the most popular layover when flying to Sydney from Washington, D.C.?

    Los Angeles is the most popular layover city among KAYAK users traveling from Washington, D.C. to Sydney.

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

    The two airlines most popular with KAYAK users for flights from Washington, D.C. to Sydney are Delta and Air New Zealand. With an average price for the route of $1,119 and an overall rating of 8.0, Delta is the most popular choice. Air New Zealand is also a great choice for the route, with an average price of $1,538 and an overall rating of 7.9.

  • How does KAYAK find such low prices on flights from Washington, D.C. 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, D.C. to Sydney.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Sydney from Washington, D.C. 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, D.C. 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, D.C. with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington, D.C. 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, D.C. up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

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

  • Washington Dulles International Airport (IAD) is a hub for United Airlines. At the same time, Sydney Kingsford Smith International Airport (SYD) serves as a primary hub for Qantas. It’s also a secondary hub for Jetstar and Virgin Australia.
  • Japan Airlines offer an extensive array of special meals to meet passengers’ religious and health requirements. Those who need a special diet are required to order a meal at least 24h before take-off.
  • The Silver train offers a reliable journey from downtown via the subway to the airport in about 49 minutes. Another way to get to the airport from the city is taking the Virginia Breeze bus, which gets you to the airport terminal in around 1h 5min.
  • Suppose you upgrade to business class on cheap flights from Washington, D.C. to Sydney. In that case, you enjoy numerous amenities, including priority check-in and boarding, access to the VIP lounge, premium dining, complimentary snacks and drinks, inflight entertainment, amenity kits, and working space.
  • Besides Sydney, IAD airport serves several nearby cities. You can visit Botany to the east, Brighton-Le-Sands to the southwest, Wolli Creek to the northwest, and Rosebery to the northeast. You can board a public bus if you need a cheap way to get to these cities. Alternatively, you can rent a car at the airport to drive at your own pace.
See more tips

Top 5 airlines serving from Washington, D.C. 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 Washington, D.C. 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
DeltaOverall score based on 8220 reviews
8.2Boarding
8.5Crew
7.3Food
8.0Comfort
7.9Entertainment
Airline reviews

Boarding is, as it always is… horrible. Gate lice. Slow moving zones. Too many people with carry ons

10.0 ExcellentStephen, Feb 2025SFO - JFK
Read more Delta reviews

Boarding is, as it always is… horrible. Gate lice. Slow moving zones. Too many people with carry ons

I loved having a most black flight crew during Black History Month; rather by design or accident I appreciated the representation. ❤️

This was the second flight this week with flight attendant Marcus I’m not sure if his last name is Lane or Lang but this guy is awesome. He funny, attentive and his service is 5 stars. Marcus makes business travel more enjoyable !

Although the flight left late, we arrived early. It was one of the quickest boarding and off boarding experiences I’ve had. It was kind of annoying the only drinks they had were water, coffee, and tea. The flight was very smooth, temperature was just right, and flight attendants were friendly.

Rode in a smaller plane and short trip meant no snacks, no free wifi or tv. It was only 30min flight so honestly wasn’t a big deal to lack these items.

Lower number on this flight so spaced out passengers. Able to enjoy more room to relax during flight. It was lovely.

Kind staff. Snacks are small but that’s the new normal.

Overall, terrible. Flight from SFO was delayed due to “air traffic control issues”, and we were all mislead about connecting flights. Told “you have 20 minutes to catch your connection”. Reality was 5. We got to watch the plane sit at the bridge. Won’t fly Delta with a connection again.

The young man who was our flight attendant in first class was lazy and did not do his job well at all. Never offered drinks upon boarding - actually I take that back... said "are you okay with water" as if I do not want to get you anything else, only passed the snacks around once, got my drink order wrong and then never offered a second round of drinks. He was the worst I have ever seen on Delta and we fly a lot.

Great service. Great staff. Boarding was a little slow, but I think there was a service dog slowing things down.

It’s a two prop flight so I had problems with my ears on re- entering ! But otherwise fine

I love flying with Qantas. There was no onscreen entertaining on this flight, and only a snack provided (not a meal) but still better than Jetstar or Virgin (in my opinion) so still happy.

The food was terrible. And the flight attendants were very rude. One flight attendant wouldn’t help a passenger lift their carry-on. Another flight attendant wouldn’t give a man an extra blanket. And they walked by not even looking at the passengers to see if they needed a glass of water.

Wheelchair assistance to move through the terminals and to/from the plane door was excellent. No vegan snack on the flight, only something with salami and cheese in it.

I have flown Qantas multiple times in the past it seemed this flight the plane had less seat room or the seats were way less comfortable than before. Everything else was about the same. Thanks

The old Plane had not been cleaned properly in a long time.

I got upgraded from economy to business, and the experience was outstanding

Boarding was over 3 hrs late and we didn’t land until almost 1:30am

I disliked the fact that they forced people to put up their seats during meal service

Headphone jacks worked poorly, seat recline was broken. Planes were rundown.

Liked nothing. As per previous segment it was delay delay delay.

Smooth flight. As always dinner could have been more generous. Breakfast was great.

I completely missed my flight because the first leg was longer than planned. I had to sleep overnight in the airport because no accommodation was provided and then sent to Trinidad in the morning with an anticipated 7 hour layover before my flight to Georgetown which was now with Caribbean Airlines. I tried twice with customer service to see if they could put me on an earlier flight which had seats available but was told it wasn’t possible.

First class felt like economy, seats were horrible, food was horrible, staff inattentive

EVen warmer in the plane it think it was 24+ degrees

The flying experience was great. The flight was on time with no boarding issues during a peak travel period. The short cut baggage drop and process was not smooth and efficient at Dulles.

Fast checkin with the self serve terminal, good communication at the boarding gate.

Very friendly staff. The flight was on time. Need a bit heavy covers/blankets. It can get colder with a thin blanket.

The plane was clean. The staff was excellent. The flight attendants were very good. Enjoyable flight. Overall. The seats in the back are too small but, will always be.

This was a 5 hour flight with no entertainment and with a snack being provided (pretzels and fruit bar), which are both high in carbs and sugar. Nuts would have been a better choice.

Delays on all NY flights. There was no communication on why but they didn’t say it was weather. Other carriers were not delayed.

The flights were terribly delayed and then cancelled which forced us booking another night at the hotel. Very poor management from American Airlines

Extraordinary service in business class, and very good breakfast and snacks. A really lovely flight.

Same as before being upgraded to business class made it perfect

I flew out of Reagan National. My flight was delayed, delayed, delayed, and then canceled ...THREE TIMES over TWO DAYS. Staff were seemingly not empowered to provide information on why the flights were screwed up. A real nightmare.

They cancelled our flight without warning OR a refund. Never doing business with American Airlines again! This is the second AA booked trip in a row that we've had challenges with.

Crew was late. Baggage was late. 2hs inside the plane waiting fro de-icing and traffic. A 3:30hs flight ended up being almost 6hs inside the airplane.

Flight delayed on both ends - have a gate ready at DCA, don't make us sit for 30min after being late to take off as well.

I had two wonderful flights - very relaxing and got me there early!

Cancelled and rebooked twice in one day with a drop in seat class. Not good at all.

I liked nothing about this flight nor the incredible lack of service and communication on this flight from the Captain to every staff member. Arrogant, entitled and lacking any kind of basic customer service

Terrible. My brother broke his leg and couldn’t board the flight and air Canada couldn’t do anything about rescheduling his flight. Poor customer service and help all around

Everything should be better, terrible flight and airport service. Delayed for 6 hours, flying around for 1 hr, and keeping us on a plane for another 2,5 -3hrs.

The plane was dirty. It appeared that Air Canada did not know vacuum cleaners had been invented. Second, the overhead bins were about 1/3 or 1/2 the size of "normal" bins. That was a problem. The worst was disembarking in the weather in Montreal. I have cold agglutinin disease. That means my red blood cells clump together and then are destroyed when exposed, even by breathing to cold air. A few seconds of exposure can be dangerous. I am now experiencing extreme fatigue caused by the anemia from that experience. I should have had more assistance descending a narrow ramp and then traversing, even if only a few feet, of icy pavement. The blowing snow penetrated my facial covering and has caused problems.

Good airport. Good entertainment on the big flight. Did not have a good way to prop up or mount my phone/ipad

I booked my flight ni November and was placed on standby? How does this happen. Flight was 1 1/2 hours late departure plane was switched to a smaller plane easy to tell this is a government run company they don’t care about anyone

Boarding was a disaster one person checking in 200 people took 25 min to check in zone 1&2.

Old, noisy plane, bad coffee, delayed. Flight attendant was very nice.

Boarding could be improved, no need to wait after a previous group is completed

We boarded 1.5 hours late. Long wait for the bags when we got to Mexico City. Long wait to get on plane with people mover truck. Friendly staff. They answered all questions as best the could. Such a long, long walk from the plane to customs. Thank you, Michael A. Burris Cambridge, Massachusetts USA

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