$730 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 27/10. 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

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

Travellers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 21% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Free to useThere are no hidden charges or fees.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Dulles Intl to Australia

Cheapest return prices found by our users on KAYAK in the last 72 hours
Sydney
Sydney2 stops$1,442
Brisbane
Brisbane2 stops$1,932
Coolangatta
Coolangatta2 stops$1,930
Cairns
Cairns3 stops$2,719
Canberra
Canberra2 stops$2,108
Darwin
Darwin2 stops$2,396
Alice Springs
Alice Springs2 stops$3,693
Sydney
Sydney2 stops$1,442
Brisbane
Brisbane2 stops$1,932
Coolangatta
Coolangatta2 stops$1,930
Cairns
Cairns3 stops$2,719
Canberra
Canberra2 stops$2,108
Darwin
Darwin2 stops$2,396
Alice Springs
Alice Springs2 stops$3,693

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

Sat, 25 Oct - Sat, 1 Nov
Logo
07:15 - 07:00IAD-SYD
32h 45m2 stops
Logo
11:50 - 23:55SYD-IAD
27h 05m2 stops
$1,442
Find Deal
Mon, 20 Oct - Fri, 31 Oct
Logo
06:15 - 08:05IAD-SYD
34h 50m2 stops
Logo
13:05 - 23:29SYD-IAD
25h 24m2 stops
$1,491
Find Deal
Mon, 19 Jan - Fri, 30 Jan
Alaska Airlines Logo
18:55 - 19:45IAD-SYD
32h 50m2 stops
Alaska Airlines Logo
21:40 - 17:55SYD-IAD
36h 15m2 stops
$1,712Alaska Airlines
Find Deal
Thu, 6 Nov - Thu, 13 Nov
Alaska Airlines Logo
18:13 - 19:45IAD-SYD
33h 32m2 stops
Alaska Airlines Logo
21:40 - 06:23SYD-IAD
24h 43m2 stops
$1,740Alaska Airlines
Find Deal
Wed, 11 Feb - Wed, 18 Feb
Air New Zealand Logo
15:19 - 09:55IAD-BNE
27h 36m2 stops
Air New Zealand Logo
11:10 - 00:31BNE-IAD
28h 21m2 stops
$1,932Air New Zealand
Find Deal
Sun, 1 Mar - Tue, 31 Mar
Air New Zealand Logo
06:00 - 07:00IAD-BNE
34h 00m2 stops
Air New Zealand Logo
11:15 - 22:36BNE-IAD
25h 21m2 stops
$1,933Air New Zealand
Find Deal
Mon, 16 Feb - Mon, 2 Mar
Air Canada Logo
09:00 - 13:35IAD-MEL
36h 35m3 stops
Air Canada Logo
08:00 - 20:29MEL-IAD
28h 29m3 stops
$2,113Air Canada
Find Deal
Tue, 3 Feb - Tue, 17 Feb
Air Canada Logo
22:06 - 13:35IAD-MEL
47h 29m3 stops
Air Canada Logo
07:45 - 21:05MEL-IAD
29h 20m3 stops
$2,164Air Canada
Find Deal
Wed, 18 Feb - Mon, 2 Mar
United Airlines Logo
14:15 - 10:00IAD-MEL
27h 45m1 stop
United Airlines Logo
13:00 - 21:04MEL-IAD
24h 04m1 stop
$2,345United Airlines
Find Deal
Sun, 9 Nov - Tue, 18 Nov
United Airlines Logo
18:39 - 07:30IAD-BNE
21h 51m1 stop
United Airlines Logo
11:40 - 19:26BNE-IAD
22h 46m1 stop
$2,348United Airlines
Find Deal
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 April, when tickets cost $1,398 (return) on average. On the other hand, the most expensive months are December and September, when the average cost of return tickets is $2,713 and $2,348 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 40% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 14 weeks before departure.

Find deals

Good to know

Low seasonJuly
Cheapest flight$730
Best time to beat the crowds but there is an average 9% increase in price.
Most popular time to fly (21% 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 $1,362 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 $2,010.

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 8937 reviews
7.3Comfort
7.1Entertainment
6.6Food
8.1Crew
7.7Boarding
Airline reviews

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

8.0 ExcellentTim, Aug 2025IAD - MUC
Read more United Airlines reviews

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.

I didn’t get on plane. Passport being processed by consulate with visa application. Tried to cancel through underpricer after purchasing cacelling for any reason. No dice, they are thieves.

When I booked it on Kayak it aaid that I wasn't allowed hamd luggage. I called United Airlines and it took them 6 minutes to figure out if I was allowed free hand luggage. Surely something that simple they should be able to tell me instantly.

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

Information on your arrival and departure airports

Washington Dulles Airport (IAD)

Not what you’re looking for? Find thousands of other hotels, flights, car hires and package deals with KAYAK.