IAD

$618 Find Cheap Flights to Washington Dulles Airport – Compare and Save

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Everything you should know

Cheapest return flight
$1,053
Typical prices: $1,669-$2,724
American Airlines
Mon 3/12Fri 7/12
SYD - IAD • 2 stops
Cheapest one-way flight
$618
Typical prices: $1,138-$2,002
Delta
Fri 16/2
SYD - IAD • 2 stops
Top airlines
Best reviews • 8.0 score
Airline reviews
Airline reviews
Top routes
Cheapest • 14% average savings
Most popular
Insights
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When to book
in advance
Our data shows that travellers who book at least 18 weeks in advance save around 14% compared to booking last minute.
Insights
Insights
When to travel
Cheapest • 24% price drop
Most popular
Good to know
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We hope you enjoy your trip to Washington, D.C. Dulles Intl Airport!
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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

Mon, 16 Nov - Mon, 7 Dec
American Airlines Logo
11:10 - 22:59SYD  Sydney Kingsford Smith-IAD Washington, D.C. Dulles Intl
27h 49m2 stops Los Angeles Charlotte Douglas
American Airlines Logo
07:14 - 09:00IAD  Washington, D.C. Dulles Intl-SYD Sydney Kingsford Smith
33h 46m2 stops Dallas/Fort Worth Los Angeles
$1,053American Airlines
Thu, 19 Nov - Sat, 5 Dec
American Airlines Logo
11:10 - 19:37SYD  Sydney Kingsford Smith-IAD Washington, D.C. Dulles Intl
24h 27m2 stops Los Angeles Charlotte Douglas
American Airlines Logo
19:14 - 09:00IAD  Washington, D.C. Dulles Intl-SYD Sydney Kingsford Smith
45h 46m2 stops Charlotte Douglas Los Angeles
$1,053American Airlines
Tue, 19 Jan - Wed, 3 Feb
Delta Logo
13:35 - 23:17SYD  Sydney Kingsford Smith-IAD Washington, D.C. Dulles Intl
25h 42m2 stops Los Angeles Detroit Metropolitan Wayne County
Delta Logo
12:53 - 08:30IAD  Washington, D.C. Dulles Intl-SYD Sydney Kingsford Smith
27h 37m2 stops Detroit Metropolitan Wayne County Los Angeles
$1,059Delta
Tue, 19 Jan - Mon, 1 Feb
Delta Logo
10:40 - 23:17SYD  Sydney Kingsford Smith-IAD Washington, D.C. Dulles Intl
28h 37m2 stops Los Angeles Detroit Metropolitan Wayne County
Delta Logo
07:17 - 08:30IAD  Washington, D.C. Dulles Intl-SYD Sydney Kingsford Smith
33h 13m2 stops Atlanta Hartsfield-Jackson Los Angeles
$1,059Delta
Sat, 6 Feb - Tue, 23 Feb
Qantas Airways Logo
14:05 - 22:55SYD  Sydney Kingsford Smith-IAD Washington, D.C. Dulles Intl
24h 50m1 stop Dallas/Fort Worth
Qantas Airways Logo
12:23 - 06:55IAD  Washington, D.C. Dulles Intl-SYD Sydney Kingsford Smith
26h 32m1 stop Dallas/Fort Worth
$1,138Qantas Airways
Thu, 11 Feb - Sat, 20 Feb
Qantas Airways Logo
07:10 - 22:48MEL  Melbourne-IAD Washington, D.C. Dulles Intl
31h 38m2 stops Sydney Kingsford Smith Dallas/Fort Worth
Qantas Airways Logo
12:23 - 10:20IAD  Washington, D.C. Dulles Intl-MEL Melbourne
29h 57m2 stops Dallas/Fort Worth Sydney Kingsford Smith
$1,490Qantas Airways
Fri, 22 Jan - Fri, 19 Feb
Air New Zealand Logo
08:20 - 20:51BNE  Brisbane-IAD Washington, D.C. Dulles Intl
27h 31m2 stops Auckland Intl Houston George Bush Intcntl
Air New Zealand Logo
22:15 - 10:00IAD  Washington, D.C. Dulles Intl-BNE Brisbane
44h 45m2 stops Los Angeles Auckland Intl
$2,229Air New Zealand
Wed, 14 Apr - Wed, 5 May
Air New Zealand Logo
09:55 - 05:25SYD  Sydney Kingsford Smith-IAD Washington, D.C. Dulles Intl
33h 30m2 stops Auckland Intl Los Angeles
Air New Zealand Logo
17:55 - 08:45IAD  Washington, D.C. Dulles Intl-SYD Sydney Kingsford Smith
24h 50m2 stops San Francisco Auckland Intl
$2,434Air New Zealand
Mon, 18 Jan - Sat, 30 Jan
United Airlines Logo
11:50 - 16:06SYD  Sydney Kingsford Smith-IAD Washington, D.C. Dulles Intl
20h 16m1 stop San Francisco
United Airlines Logo
17:38 - 06:20IAD  Washington, D.C. Dulles Intl-SYD Sydney Kingsford Smith
44h 42m1 stop San Francisco
$2,616United Airlines
Mon, 18 Jan - Sun, 31 Jan
United Airlines Logo
13:20 - 19:05SYD  Sydney Kingsford Smith-IAD Washington, D.C. Dulles Intl
21h 45m1 stop San Francisco
United Airlines Logo
18:00 - 09:05IAD  Washington, D.C. Dulles Intl-SYD Sydney Kingsford Smith
23h 05m1 stop Los Angeles
$2,616United Airlines
Booking Insights

Price, demand, and travel trends for flights to Washington, D.C. Dulles Intl Airport

Use KAYAK data on prices, travel dates, airlines, and seasonal trends to compare options and book flights with more confidence.

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

Sydney to Washington, D.C. Dulles Intl Airport is the cheapest route at $1,053 return, found in the past 5 days on KAYAK. KAYAK data shows this is also the most popular route.

How much is a flight to Washington, D.C. Dulles Intl Airport?

On average, a return flight from Australia to Washington, D.C. Dulles Intl Airport costs $2,084, based on KAYAK data over the past 12 months. Return fares from Sydney average $1,954, while Brisbane runs a bit higher at $2,010.

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

Tuesday is the cheapest day to fly to Washington, D.C. Dulles Intl Airport at $1,977 return on average over the past 12 months on KAYAK. Monday is the most expensive at $2,386.

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

•November is the cheapest month to fly to Washington, D.C. Dulles Intl Airport with an average price of $1,588 return.
•September ($2,701) and June ($2,612) are the most expensive.

Based on KAYAK data over the past 12 months.

What is the cheapest time of day to fly to Washington, D.C. Dulles Intl Airport?

Evening flights to Washington, D.C. Dulles Intl Airport are the cheapest at $1,828 return on average. Night flights are the most expensive at $2,712.

What is a good deal for flights to Washington, D.C. Dulles Intl Airport?

Flights under $1,669 are considered a good deal. 25% of KAYAK users found return flights to Washington, D.C. Dulles Intl Airport at or below these prices, with the lowest fares from:
•Sydney $1,588
•Brisbane $1,650.

When are flights to Washington, D.C. Dulles Intl Airport the cheapest?

Flights to Washington, D.C. Dulles Intl Airport are cheapest 18 weeks before departure. Booking in this window typically costs about 14% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Key details for flights to Washington, D.C. Dulles Intl Airport

Low season

March

Cheapest flight

$618
Beat the crowds with an average 44% drop in travellers.
The most popular month to fly with an average 49% increase in travellers.
One-way flight from Sydney to Washington, D.C. Dulles Intl 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

Your questions about flights to Washington, D.C. Dulles Intl Airport, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines, and booking questions.

  • How do I know if a flight to Washington, D.C. Dulles Intl Airport is a good deal?

    A good deal on a flight to Washington, D.C. Dulles Intl Airport is around $1,669 return. This fare is in the lowest 25% of return flight prices searched on KAYAK, averaged across the cities most often searched as origins by KAYAK users.

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

    Washington, D.C. Dulles Intl is 36.0 km from Washington, D.C. Dulles Intl Airport city centre.

  • Which city has the cheapest flights to Washington, D.C. Dulles Intl Airport?

    Based on fares booked in the past 5 days, the cheapest flights to Washington, D.C. Dulles Intl Airport are from Melbourne, starting at $1,490 return.

  • How expensive are last-minute flights to Washington, D.C. Dulles Intl Airport?

    Last-minute fares to Washington, D.C. Dulles Intl Airport (booked within two weeks of departure) are typically 16% lower than the average return fare of $2,084. Booking late can sometimes save money, but availability is limited.

  • What is the difference between the most popular and the most frequent airline at Washington, D.C. Dulles Intl Airport?

    United Airlines operates the most flights from Australia to Washington, D.C. Dulles Intl Airport at 0 per week, while Air New Zealand is the airline most often selected by KAYAK users searching for flights from Australia to Washington, D.C. Dulles Intl Airport. The two are often different because flight volume reflects an airline's schedule, while popularity reflects traveller choice.

  • Which airports serve Washington, D.C. and the surrounding area?

    Flights to Washington, D.C. can arrive at several major airports serving the metro area, including Washington, D.C. Reagan-National (DCA) and Washington, D.C. Dulles Intl (IAD). Nearby alternatives within 80.5 km of Washington, D.C. include Washington, D.C. Reagan-National (DCA), Fort Meade Tipton (FME) and Baltimore/Washington (BWI). These airports are not in Washington, D.C. itself but may be useful depending on your route, airline, and onward travel plans.

Your guide to booking Washington, D.C. Dulles Intl Airport flights

From booking to airport arrival, find tips to help you plan your flight with more confidence.
  • For the best chance at a low fare to Washington, D.C. Dulles Intl Airport, book around 18 weeks before departure. Based on KAYAK data from the last 12 months, fares are historically about 14% lower during this window than last-minute fares.
  • For flights to Washington, D.C. Dulles Intl Airport, a good return fare is around $1,669. If you find a fare below that, you're getting a strong deal.
  • If your travel dates are flexible, consider flying to Washington, D.C. Dulles Intl Airport in November. Return fares historically average $1,588, making November the cheapest month to travel based on KAYAK data from the last 12 months.
  • Before you book:

    • Check the route's typical price range so you can spot a deal.
    • Confirm baggage fees and seat selection costs on budget carriers.
    • Verify whether you need any travel documents beyond an ID.
    • Pick a departure airport, since your nearest may not be the cheapest origin.
  • Shift your departure to afternoon to save up to $884 on a return flight. Afternoon flights to Washington, D.C. Dulles Intl Airport average $1,828 compared to $2,712 for evening flights.
  • Once you arrive in Washington, D.C. Dulles Intl Airport, a few great places to start are Grand Hyatt Washington, Walter E. Washington Convention Center, and JW Marriott Washington, DC. These are popular with first-time visitors and can give you a good feel for the area.

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
Fiji AirwaysOverall score based on 262 reviews
7.4Entertainment
7.5Food
8.0Comfort
8.0Boarding
8.5Crew
Airline reviews

The flight was delayed and it was delayed on my trip from Seattle to San Francisco also, my luggage didn’t get to me 5 days later after my arrival.

2.0 MediocreAnonymous, Sept 2026
Read more Fiji Airways reviews

The flight was delayed and it was delayed on my trip from Seattle to San Francisco also, my luggage didn’t get to me 5 days later after my arrival.

Poor food options for vegi folks n not enough food quantity. Fiji really needs to improve on it. Flight crew is very warm and respectful but don’t know how to cater towards vegi folks n items despite so many Indians staying in Fiji

I thought Fiji and Fiji Airways was great. Looking forward to the next trip. Baggage claim at the end went to sh...t

Left on time , arrived on time. Staff was awesome!!!!! Great flight!!!!

Great food, wonderful staff made a long flight seem short

We have had an absolutely horrific experience so far getting home from Australia on a $18,000 + flight we booked with you. The flight did not deplane in Dallas because there was no available gate or staircase. We sat in the plane for 3 hours waiting to deplane. As a result we missed our connecting flight to New York. American Airlines put us up in a hotel several miles away. We waited 45 minutes for a shuttle and The shuttle driver was horribly rude and unhelpful. They offered us $70 vouchers for food but actually there was no food left when we arrived minus some chicken nuggets and corn dogs. It was awful. Horrible way to end a vacation. There has to be accountability here.

A bit cramped in economy and the people in front wouldn’t put their seats up during meal service, crew did not help with that and I felt they could have done more about it.

The airline is ok, but it needs to improve it schedules.

In-flight entertainment options could use a refresh, Consider a tie-up with Spotify for more current music and with IMDB or other service for newer selections/movie ratings.

6 hour delay and they didnt try to make up any time during an over 10 hour flight

Premium economy seats and food we're very nice although the price could be more affordable so we can do it more often.

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!

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

Worst boarding experience, flight extremely delayed causing super tight connect and deplaning was a disaster as ppl were pushing and shoving to get off. Then after flying over 8 hours had to get off a job to next flight. Limited beverage service in Business class (water or white wine) no food. The plane was very cold (temperature) so uncomfortable

The business class service was very good. The crew was helpful and the food was enjoyable. Boarding was well organized.

Entertainment was great. Seats were good. They did not have my pre-ordered hot food product available but did comp me something cold in place of the item.

No water or beverage was provided. I had to ask for water. The sole flight attendant had more interest in selling the credit card. In addition when we got to Dulles the plane and gate were misaligned and it took at least 15 minutes to get off the plane.

Flight was delayed almost an hour because the cleaning crew broke one of the bathroom doors.

When we boarded we were treated with care and it never stopped. Got towels before breakfast and after snacks was a lovely touch!

The flight crew was the worst I've experienced. If they worked for me, I would fire them immediately. They never smiled, they seemed angry and avoided passengers as much as possible. The food was not edible, and my luggage was lost. I will never fly United again!!!

Fought with Lufthansa was poor, seats are uncomfortable, food was bad and luggage did not arrive to IA

Awful!!!. I do not recommend United. The flight staff are unhappy and don't attempt to make the passengers feel comfortable or welcome. The food is not edible, and the seats are miserable. My expensive luggage was destroyed, and the ticket prices are too much for the experience.

On time, easy boarding. Anytime you sit in an economy seat, it’s uncomfortable. New plane and the bathrooms were in the galley at the back of the plane which seemed odd.

I really liked that the pilot stay Ed touch with us during the flight, about bumpy weather coming up & during it. He spoke slowly enough we could hear him & it was comforting. The flight attendants had to take their seats a couple of times so it was nice to hear the pilot. The flight attendants were amazing. They all seem to work well together and to have good spirits when dealing with us. Much appreciated.

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

It took 1.5 hours for maintenance to sign off on a repair that was completed the night before. When we landed in DC we had to wait 20 mins for a gate. As a result I missed my connection. American seems to be reducing the number of ground ground crew and causing delays. This us not the first time.

The delays were not communicated well at all. I was in the airport for over 9 hours with little knowledge of if I was actually going to reach my destination.

Seats are very comfortable but WAY too small...i'm only 5'11" and 170 lbs but i barely fit in the chair! Food is just abysmal. I don't even bother eating. Staff were very professional, boarding was smooth, and plenty of room in overheads.

As per usual for my flights with American Airlines, One flight was very delayed and caused me to miss my connection and they moved my flight to another day. I called customer support and was moved back to my original day but different flights. My layover flight was delayed by an additional 30 minutes while the flight crew confirmed that the plane was airworthy. Ultimately, it is less hassle to drive 10 hours than to fly 6 hours with American Airlines. I recommend my friends and family to hitch hike over taking this terrible transit.

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

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.

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

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Alexandria
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Greenbelt
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Gettysburg
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Bowie
Harpers Ferry
Linthicum Heights
Hunt Valley
Annapolis
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Lexington Park
Charles Town
Laurel
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