$700 Find Cheap Flights from Washington Dulles Airport to Australia

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 Australia departing on 5/12. 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

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Cheap Flights from Dulles Intl to Australia

Cheapest return prices found by our users on KAYAK in the last 72 hours
Sydney
Sydney2 stops$1,645
Brisbane
Brisbane2 stops$1,165
Coolangatta
Coolangatta2 stops$2,427
Cairns
Cairns2 stops$2,485
Canberra
Canberra2 stops$2,176
Darwin
Darwin2 stops$2,886
Alice Springs
Alice Springs2 stops$3,464
Sydney
Sydney2 stops$1,645
Brisbane
Brisbane2 stops$1,165
Coolangatta
Coolangatta2 stops$2,427
Cairns
Cairns2 stops$2,485
Canberra
Canberra2 stops$2,176
Darwin
Darwin2 stops$2,886
Alice Springs
Alice Springs2 stops$3,464

Book Cheap Dulles Intl to Australia Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Dulles Intl to Australia 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 return flight deals from Dulles Intl to Australia

Tue, 25 Nov - Tue, 2 Dec
Air Canada Logo
09:45 - 08:45IAD-BNE
32h 00m2 stops
Air Canada Logo
10:45 - 11:23BNE-IAD
39h 38m2 stops
$1,165Air Canada
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Thu, 26 Feb - Sun, 8 Mar
Air Canada Logo
09:45 - 08:45IAD-BNE
32h 00m2 stops
Air Canada Logo
10:45 - 19:29BNE-IAD
23h 44m2 stops
$1,179Air Canada
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Wed, 26 Nov - Wed, 3 Dec
Multiple Airlines Logo
22:11 - 14:05IAD-ADL
48h 24m3 stops
Multiple Airlines Logo
19:55 - 11:45ADL-IAD
55h 20m3 stops
$1,485Multiple Airlines
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Wed, 25 Feb - Wed, 11 Mar
Multiple Airlines Logo
09:45 - 09:35IAD-SYD
31h 50m2 stops
Multiple Airlines Logo
10:20 - 18:46SYD-IAD
23h 26m2 stops
$1,670Multiple Airlines
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Tue, 28 Apr - Wed, 13 May
ANA Logo
15:30 - 19:15IAD-SYD
37h 45m2 stops
ANA Logo
20:55 - 10:05SYD-IAD
27h 10m1 stop
$1,674ANA
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Tue, 28 Apr - Wed, 13 May
ANA Logo
15:30 - 19:15IAD-SYD
37h 45m2 stops
ANA Logo
20:55 - 14:03SYD-IAD
31h 08m2 stops
$1,687ANA
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Tue, 25 Nov - Tue, 2 Dec
Qantas Airways Logo
17:03 - 06:30IAD-BNE
22h 27m1 stop
Qantas Airways Logo
09:40 - 22:41BNE-IAD
28h 01m1 stop
$1,861Qantas Airways
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Sun, 16 Nov - Sun, 23 Nov
United Airlines Logo
18:03 - 07:30IAD-BNE
22h 27m1 stop
United Airlines Logo
11:40 - 00:56BNE-IAD
28h 16m1 stop
$1,917United Airlines
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Wed, 3 Dec - Sun, 21 Dec
United Airlines Logo
16:00 - 07:30IAD-BNE
24h 30m2 stops
United Airlines Logo
11:40 - 01:07BNE-IAD
28h 27m1 stop
$1,923United Airlines
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Sat, 7 Mar - Sun, 22 Mar
Qantas Airways Logo
17:37 - 06:30IAD-BNE
21h 53m1 stop
Qantas Airways Logo
08:40 - 22:15BNE-IAD
27h 35m1 stop
$1,931Qantas Airways
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Booking Insights

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

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

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

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 Australia, 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 Australia is February, when tickets cost $1,401 (return) on average. On the other hand, the most expensive months are December and January, when the average cost of return tickets is $2,803 and $2,377 respectively.

What’s the cheapest day of the week to fly from Washington Dulles Airport to Australia?

The average price of all round-trip flights from Washington, D.C. Dulles Intl Airport to Australia clicked on KAYAK for each day over the last 12 months.

When flying from Washington Dulles Airport to Australia, you should consider leaving on a Wednesday and avoid Thursdays if you are looking for the best rates. For your return to Washington Dulles Airport, you’ll find the best rates on Fridays and the most expensive ones on Saturdays.

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

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 Australia, 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 a flight from Washington, D.C. Dulles Intl Airport to Australia, you should book around 3 weeks before departure, which saves you about 37% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 26 weeks before departure.

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Good to know

Low seasonJuly
Cheapest flight$700
Best time to beat the crowds but there is an average 11% increase in price.
Most popular time to fly (23% more expensive on average)
Flight from Washington Dulles Airport to Sydney

FAQs - booking Australia flights

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

    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 Australia.

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

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

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

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly from Washington Dulles Airport to Australia with an airline and back with another airline.

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

    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 from Washington Dulles Airport to Australia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Australia?

    The cheapest time of day to fly to Australia is generally in the morning, when retur flights cost $2,074 on average. Morning departures are around 6% cheaper than evening flights, on average. The most expensive time of day to fly to Australia is generally at night, which is peak travel time and where the average cost of a ticket is $3,060.

Reviews of the top airline flying from Dulles Intl to Australia

 
Need help choosing which airline to fly with from Dulles Intl to Australia? 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.
7.4
United AirlinesOverall score based on 8998 reviews
7.3Comfort
7.1Entertainment
8.1Crew
7.7Boarding
6.6Food
Airline reviews

During booking, I kept trying submitting my payment from the Mexican website and it didn't work. After I had the idea to change it to the Canadian website, it worked but I had to be charged the equivalent of 50 CAD more. I received the clear instruction that I would only be able to check-in at the airport and that it was impossible to select a seat 24 hours before departure, that I had to pay 144 CAD to do so, although not only was I able to check-in 24 hours before departure, but I could have selected my seats for free then. All in all, I almost threw $200 out the window due to misleading information. Besides, the app kept crashing, the information to get to the gate on the app was inaccurate, my gate was switched and I was only informed once in the air (luckily I had noticed the departure pannel), I was not addressed in my language beforehand and even if I tried I was immediately answered in English (which meant the crew understood but didn't want to answer accordingly), there was only one snack & beverage service on my medium haul flight and no beverage service on my short haul flight. To be fair, the planes were comfortable, the crew apart from the language issue was helpful, dynamic and engaging, the plane was clean and the directions were clear and direct. United has a lot of potential to be one of my favourite airlines, but the devil is in the details and a lot of them missed the target.

8.0 ExcellentMonsieur, Oct 2025IAD - EWR
Read more United Airlines reviews

During booking, I kept trying submitting my payment from the Mexican website and it didn't work. After I had the idea to change it to the Canadian website, it worked but I had to be charged the equivalent of 50 CAD more. I received the clear instruction that I would only be able to check-in at the airport and that it was impossible to select a seat 24 hours before departure, that I had to pay 144 CAD to do so, although not only was I able to check-in 24 hours before departure, but I could have selected my seats for free then. All in all, I almost threw $200 out the window due to misleading information. Besides, the app kept crashing, the information to get to the gate on the app was inaccurate, my gate was switched and I was only informed once in the air (luckily I had noticed the departure pannel), I was not addressed in my language beforehand and even if I tried I was immediately answered in English (which meant the crew understood but didn't want to answer accordingly), there was only one snack & beverage service on my medium haul flight and no beverage service on my short haul flight. To be fair, the planes were comfortable, the crew apart from the language issue was helpful, dynamic and engaging, the plane was clean and the directions were clear and direct. United has a lot of potential to be one of my favourite airlines, but the devil is in the details and a lot of them missed the target.

Better WiFi. I cannot understand that in 2025, United is so behind on a technology that is now a necessity and still painfully unreliable, slow and keeps disconnecting.

Great service on board. Boarding a bit slow due to process. Food was pretty average.

Very small cramped plane for an international flight. Everything else was good, but it was maybe the smallest comfort-wise I've ever been on for longer than 3-4 hours and the trip was 7.5

Flight was delayed 3 hours. No food and drink vouchers was provided. They offered a mini pretzel bag and water .

Staff was rude. Didn’t give water for 2 hours. Worst service

Was on time until within 1 hour of flight-how does that happen? Staff very friendly.

I liked the choice of lemon ginger tea. I think stewardesses can be more considerate of older people needs.

We were given vouchers we couldn’t use with a 5.5 hour delay

I fly UAL 7-8 times per year. This flight was not up to snuff because it boarded very late "due to unexpected delays in restocking the plane" and yet Flight Aware showed the plane had landed some 10 hours earlier--so I think they could have planned accordingly. The FA's were nice but harried. The video system had to be rebooted 3-4 times. The food service was rather abrupt; they forgot my row and when I asked for my meal, they brought it with some impatience. Overall, the flight was fine, but the little details made it feel somewhat mundane and hurried.

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

Information on your arrival and departure airports

Washington Dulles Airport (IAD)

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