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$629 Find Cheap Flights to Washington Dulles Airport – Compare and Save

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Everything you should know

Cheapest return fare
$1,253
Typical prices: $1,511-$2,141
Multiple Airlines
Tue 20/10Tue 27/10
SYD - IAD • 3 stops
Cheapest one-way flight
$629
Typical prices: $864-$1,574
Multiple Airlines
Wed 28/10
SYD - IAD • 3 stops
Top routes
Insights
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Insights
When to travel
Cheapest • 17% price drop
Most popular
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Booking Insights
Flight Deals

Cheap Flights to Dulles Intl

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals to Dulles Intl

Tue, 20 Oct - Tue, 27 Oct
Multiple Airlines Logo
14:15 - 06:20SYD  Sydney Kingsford Smith-IAD Washington, D.C. Dulles Intl
31h 05m3 stops Nadi Los Angeles Los Angeles Las Vegas Harry Reid Intl
Multiple Airlines Logo
08:05 - 12:35IAD  Washington, D.C. Dulles Intl-SYD Sydney Kingsford Smith
37h 30m3 stops Atlanta Hartsfield-Jackson Los Angeles Los Angeles Nadi
$1,253Multiple Airlines
Tue, 20 Oct - Tue, 27 Oct
Multiple Airlines Logo
14:15 - 06:20SYD  Sydney Kingsford Smith-IAD Washington, D.C. Dulles Intl
31h 05m3 stops Nadi Los Angeles Los Angeles Las Vegas Harry Reid Intl
Multiple Airlines Logo
08:05 - 12:35IAD  Washington, D.C. Dulles Intl-SYD Sydney Kingsford Smith
37h 30m3 stops Atlanta Hartsfield-Jackson Los Angeles Los Angeles Nadi
$1,263Multiple Airlines
Tue, 20 Oct - Tue, 27 Oct
Air New Zealand Logo
09:55 - 01:06SYD  Sydney Kingsford Smith-IAD Washington, D.C. Dulles Intl
30h 11m2 stops Auckland Intl San Francisco
Air New Zealand Logo
08:34 - 08:35IAD  Washington, D.C. Dulles Intl-SYD Sydney Kingsford Smith
33h 01m2 stops Houston George Bush Intcntl Auckland Intl
$1,929Air New Zealand
Tue, 20 Oct - Tue, 27 Oct
Air New Zealand Logo
11:20 - 22:07BNE  Brisbane-IAD Washington, D.C. Dulles Intl
24h 47m2 stops Auckland Intl San Francisco
Air New Zealand Logo
14:38 - 10:00IAD  Washington, D.C. Dulles Intl-BNE Brisbane
29h 22m2 stops Houston George Bush Intcntl Auckland Intl
$1,990Air New Zealand
Mon, 5 Oct - Sun, 18 Oct
American Airlines Logo
13:00 - 18:23SYD  Sydney Kingsford Smith-IAD Washington, D.C. Dulles Intl
20h 23m1 stop Dallas/Fort Worth
American Airlines Logo
06:00 - 08:05IAD  Washington, D.C. Dulles Intl-SYD Sydney Kingsford Smith
35h 05m1 stop Los Angeles Los Angeles
$2,116American Airlines
Thu, 5 Nov - Mon, 9 Nov
American Airlines Logo
11:10 - 05:38SYD  Sydney Kingsford Smith-IAD Washington, D.C. Dulles Intl
34h 28m1 stop Los Angeles Los Angeles
American Airlines Logo
10:44 - 06:55IAD  Washington, D.C. Dulles Intl-SYD Sydney Kingsford Smith
28h 11m2 stops Charlotte Douglas Dallas/Fort Worth
$2,122American Airlines
Mon, 19 Oct - Fri, 20 Nov
Qantas Airways Logo
13:00 - 23:23SYD  Sydney Kingsford Smith-IAD Washington, D.C. Dulles Intl
25h 23m1 stop Dallas/Fort Worth
Qantas Airways Logo
06:00 - 09:00IAD  Washington, D.C. Dulles Intl-SYD Sydney Kingsford Smith
35h 00m1 stop Los Angeles Los Angeles
$2,276Qantas Airways
Mon, 30 Nov - Tue, 29 Dec
Air Canada Logo
11:20 - 11:48SYD  Sydney Kingsford Smith-IAD Washington, D.C. Dulles Intl
40h 28m2 stops Vancouver Intl Ottawa
Air Canada Logo
09:55 - 09:35IAD  Washington, D.C. Dulles Intl-SYD Sydney Kingsford Smith
31h 40m2 stops Montreal Pierre Elliott Trudeau Intl Vancouver Intl
$2,605Air Canada
Thu, 3 Dec - Tue, 29 Dec
Air Canada Logo
16:00 - 15:53SYD  Sydney Kingsford Smith-IAD Washington, D.C. Dulles Intl
39h 53m2 stops Vancouver Intl Ottawa
Air Canada Logo
09:55 - 09:35IAD  Washington, D.C. Dulles Intl-SYD Sydney Kingsford Smith
31h 40m2 stops Montreal Pierre Elliott Trudeau Intl Vancouver Intl
$2,605Air Canada
Fri, 18 Dec - Tue, 9 Feb
Qantas Airways Logo
06:05 - 17:00SYD  Sydney Kingsford Smith-IAD Washington, D.C. Dulles Intl
26h 55m2 stops Brisbane Dallas/Fort Worth
Qantas Airways Logo
11:45 - 06:55IAD  Washington, D.C. Dulles Intl-SYD Sydney Kingsford Smith
27h 10m1 stop Dallas/Fort Worth
$3,205Qantas Airways
Booking Insights

KAYAK's insights & trends for flights to Dulles Intl

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

What is the cheapest flight to Washington Dulles Airport?

In the last 5 days, the cheapest flight deal to Washington Dulles Airport was found on the route from Sydney, at $1,253 return. The most popular connection is from Melbourne to Washington Dulles Airport, while KAYAK users have found return deals for as low as $1,605 in the last 5 days.

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

The cheapest month for flights to Washington, D.C. Dulles Intl Airport is October, where tickets cost $1,551 on average for return flights. On the other hand, the most expensive months are April and September, where the average cost of tickets from Australia is $2,312 and $2,252 respectively. For one-way flights, the best month to travel is September with an average price of $951.

Good to know – Book Cheap Washington, D.C. Dulles Intl Airport Plane Tickets

Low season

August

Cheapest flight

$629
Best time to beat the crowds but there is an average 2% increase in price.
Most popular time to fly (8% more expensive on average)
Flight from Sydney to Washington Dulles Airport

When to book flights to Dulles Intl

Are your dates flexible? Find out the best times to travel to Dulles Intl based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price

FAQs - booking Washington Dulles Airport flights

  • What is the cheapest flight to Washington Dulles Airport?

    In the last 5 days, the cheapest flight deal to Washington Dulles Airport was found on the route from Sydney, at $1,253 return. The most popular connection is from Melbourne to Washington Dulles Airport, while KAYAK users have found return deals for as low as $1,605 in the last 5 days.

  • How far is Washington, D.C. Dulles Intl Airport from central Washington, D.C.?

    The distance between Washington, D.C. Dulles Intl Airport and the city centre of Washington, D.C. is 36 km.

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

    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 to Washington Dulles Airport.

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

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

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

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Washington Dulles Airport 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 to Washington Dulles Airport?

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

Top tips for finding cheap flights to Washington Dulles Airport

  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Washington Dulles Airport flight deals.

Reviews of the top 5 airlines flying to Dulles Intl

 
Need help choosing which airline to fly with to Dulles Intl? 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 668 reviews
7.4Food
8.2Boarding
8.5Crew
7.4Entertainment
7.9Comfort
Airline reviews

mechanical issue, so delayed take-off (hence the low boarding rating) and made a number of people miss their connecting flight. Also took a long time to get our checked baggage. I luckily made mine with 5 minutes to spare, but it was nerve-racking.

8.0 ExcellentAnonymous, Aug 2026
Read more Air New Zealand reviews

mechanical issue, so delayed take-off (hence the low boarding rating) and made a number of people miss their connecting flight. Also took a long time to get our checked baggage. I luckily made mine with 5 minutes to spare, but it was nerve-racking.

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

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.

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.

The Premium Economy seats were very comfortable and the food was quite tasty. I did not use the entertainment system, but I was able to charge my phone and tablet with the seatback connection.

We had difficulty checking in as United didn’t recognize the confirmation number and the agent was not helpful. We went to the United Assistance desk where the agent was able to process our reservation. We also weren’t allowed to choose seats in advance.

Air New Zealand over sold our flight and tried to bump us to yesterday. After several calls we got booked to United about 6 hrs before our original flight. No apologies!

Very quick flight so no time for refreshments. We took off. Then landed. The end. Seats were too tight. Very cramped Grateful for the short flight cos moving around wasn’t possible

Couldn’t request a vegan meal somehow but I noticed other people getting them

Overall, it was a very good experience. I would have given it a 10/10, especially based on our flight from SFO to Melbourne. The cabin crew on that flight were wonderful and incredibly attentive. They took extra care when setting up our beds so we could sleep comfortably without being disturbed. Dinner was served promptly and smoothly. I woke up quite late, when the flight was already preparing for landing, and the crew still made sure I was taken care of. They brought me English tea in a proper cup, and when it was time to prepare the cabin for landing, they thoughtfully transferred it into a takeaway cup so I could continue enjoying it along with some breakfast. Those small, thoughtful gestures made the long flight feel much more comfortable and special. The service from the SFO to Melbourne crew was truly excellent.

Great food and good entertainment options for the long flight.

Loved the food and beverages available, spacious economy class, excellent entertainment

Very good overall. Highly recommend for all flying to Australia

We had bulkhead seats in a A380 in the upper deck in seats 31 D and E. Storage was very limited other than in overhead bin - which is not within reach when in seat. Yet paying same price as others in premium economy who have a lot more storage within arm’s reach. Seems very unfair.

Good check in and helpful staff. Delayed for 1 hour. Took about 45 Mins to get baggage’s at DFW . Food was average ( Hindu meal ) . Overall it was good experience

When I originally booked this flight, I was expecting to travel on Qantas. When the itinerary changed and the long-haul segment was operated by American Airlines, we were disappointed but remained open-minded. Unfortunately, the overall service experience fell far short of expectations. This was a long-haul international flight. Getting up periodically to use the restroom or stretch is inevitable, especially on flights of this duration. However, each time we stood up, we felt as though we were inconveniencing the crew. The tone and body language often suggested that we were in the way or disrupting something simply by moving about the cabin. As a result, I avoided getting up as often as I needed to and was physically very sore upon arrival. Meal service was similarly impersonal. The options were presented in single words “beef or veggie,” “pasta or beef” without any description of what was actually being served. There was little engagement or courtesy beyond that. Even simple expressions of gratitude were often not acknowledged. I am accustomed to no-frills travel and do not expect luxury. What was disappointing was not the absence of extras, but the absence of basic warmth and professionalism. On a long-haul international flight, small moments of courtesy and humanity make a significant difference. In this case, the experience felt transactional and dismissive rather than welcoming. I hope this feedback is taken constructively, as there is a meaningful difference between efficient service and indifferent service.

Business seats not as comfortable or private as most competitors (e.g. Qantas was outstanding), and movie selection was much more limited than Qantas or United has been recently

Hard to move and get out of my seat when the passenger in front is in recline position.

Seats to cramped. Food served needs better selection and more taste. Even though it was economy class a little upgrade in food would be a big plus in choosing Alaska Airlines again and more seat room. Thank You.

Great Brasilia aircraft - not a Boeing 757 like the next part of the flight. Flight from MCI to IAD was great, on-time, comfortable, did I mention that? The flight from IAD to EDI was painful. One of the reasons I won't fly United again? Boeing 757, with a seat pitch and material that was horrendous. Worst aircraft ever, made worse by United sardine-can tight seating. Oh, and the connection window, 45 minutes, really? At IAD, in different concourses? What idiot came up with that flight scenario? Happily, (for me and my travel insurance people) the flight was late (reminiscent of American Airlines). The crew was professional and courteous.

great starting with the business Class that's was Amazing . thank you United Airlines and brussels Airlines

Best flight in years. Pre-boarding because of my mobility issues. Good food and beverage from beginning to end. Excellent choice of films. Good service by stewardesses. Comfortable seats. I could lie down!

No drink service but there was no N/A as an option to choose. Seats were extremely tight. I am under 5.5 and I bumped my knees have no idea how taller people could manage.

Bad check in experience. Dirty ancient aircraft. Truly awful food and this in Business/ First class.

I truely appreciate all services. I was highly impressed and will not hesitate to recommend United Airlines to friends and family. The AVML was perfect.

Very kind Lufthansa agent somehow gave us all no charge extra business class seats and helped us get home rested and happy.

The lounge was not accessible because it was located before the passport control, and backtracking was impossible.

The flight to America was freezing. The overnight flight back to the UK was boiling hot and the cabin stank of toilet or occasionally perfume, even though I was several rows back from either bathroom. Food was tiny portions. Two small pieces of tough and dry beef in random gravy with pretend mashed potato raking up most of it. Very little veg. Salad was ok. Wooden cutlery broke within minutes of using. Lots of old films for entertainment. Some new ones. Generally a bit rubbish.

Entertainment center did not work and no electric available at seat for 11 hour flight. Didn’t have access to overhead light or call button. Food was tasteless and had a high salt (27 %) of recommended daily salt intake

My flight was delayed close to 10 times over the course of the evening. I was originally scheduled to depart at 7:03 PM but did not leave until 12:33 AM, resulting in over 9 hours spent waiting at the airport. The only explanation provided was that the aircraft kept being swapped, with no clear reasoning as to why. Weather conditions at both DCA and Tampa were clear, so that was not a factor. The only accommodation offered was a $12 food voucher, which was entirely insufficient given the length of the delay. Overall, I was completely unsatisfied with this experience. A delay of this magnitude with no meaningful communication or accommodations is unacceptable, and I would have expected much more from American Airlines in terms of customer care.

if it's a mobile only entertainment experience, please provide a place to hold the device in the back of the seat.

My flight attendant was miserable. Bathroom filthy and the water soapy in the tea. I’d choose delta everytime.

DCA-LAX No screen on a 5 hour flight (almost) no food for sale on a 5 hour flight (practically) no wifi coverage or speed on a 5 hour flight I should have gotten my money back, shame on American

I had ridiculously long body search because I have knee and hip replacements

Flight was delayed 2.5 hours at the start. They kept saying mechanical issues and changed gates several times. Then when we landed, they kept us on the tarmac for 1 hr because they didnt have gate staff to pull out a bridge. Its insane that they cannot have 2-3 people to operate a bridge for a flight with 100 people? Then the baggage claim, bags took over 45 minutes to arrive. All in all, I was scheduled to arrive at 6:30 PM local time and I didn't leave the airport till 10:40 PM local time. Its a shame and makes me never want to fly American again.

My wife has a scooter and they where supposed to send from departure to destination and had it go to connecting flight,not good.Nobody has knowledge of the scooters or the battery's.

The flight was over an hour delayed. The problem was they had the wrong aircraft at the gate, Joe in the world does that happen?

On time departure & early arrival. Made a long day much better.

Concern Regarding Significant Gate Delay and Jet Bridge Issue Dear Customer Relations Team, I am writing to express my disappointment with the experience I had on my recent flight AA 2414 on Sunday January 18, 2026. What should have been a routine departure turned into a frustrating and avoidable delay due to an issue with the jet bridge at the gate. As a result, the flight was delayed by approximately 90 minutes while multiple gate changes were attempted. The lack of clear communication during this period made the situation even more challenging. Passengers were left uncertain about the cause of the delay, the expected timeline, and the next steps. This not only disrupted travel plans but also created unnecessary stress for everyone on board. I understand that operational issues can arise, but a malfunctioning jet bridge and the resulting extended delay suggest an area where procedures or equipment maintenance may need attention. I hope you will review this incident to prevent similar disruptions in the future. I would appreciate acknowledgment of this concern and consideration of appropriate compensation for the inconvenience and lost time caused by this delay. Thank you for taking the time to review my experience. I look forward to hearing from you. Sincerely, Dion Dillard

The flight was good. My luggage didn’t land with me when I arrived in Columbus. So grateful I was able to get my luggage back within the 2 hours😍👍.

Economy seats always cramped, no meal on international flight, no plugs for electronics, but we got there and cabin crew was excellent.

Pros: The airplane was new and had in-flight entertainment (tablet behind seats) with new movies instead of watching on personal devices. Cons: the flight time was changed without informing us. When I booked the flight, the time was 13:30pm (also in the email confirmation). However, when I reached the airport, the time was conveniently changed to 14:55pm. When I asked at the counter, they said the flight always took off at this time. The booking was made by Air Canada, but the flight was operated by United.

My flight got delayed 5 times and then got cancelled eventually, I had to get a hotel and uber and pay for food for an extra night without any plans. It was a horrible experience, instead of Air Canada, I was flying with United .

Super. Planes were clean. Flights were on time. boarding was smooth. Flight attendants were professional.

Flight was delayed by 45 min. No problems. Everyone took it in stride.

The Flight Attendant was particularly helpful to my wife, who was having a bad day.

We had no idea that you had to check in with United so we were waiting at a closed Air Canada window for about an hour before we found out we had to us United.

Boarding staff provided up-to-date flight information. They were professional and courteous. The flight was on-time and comfortable (adequate leg room). Early landing and orderly exited the aircraft. Ground baggage handlers were quick to offload carry-on bags. GREAT EXPERIENCE WITH HK EXPRESS

I appreciated the flight was on schedule but the crew told us that the flight would be delayed because of an air craft queue to take off. Instead of us arriving at 11.55pm, we were in Toronto at something past 2am which was a massive disadvantage on my part.

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