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$622 Find Cheap Flights to Washington Dulles Airport – Compare and Save

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Everything you should know

Cheapest return flight
$1,056
Typical prices: $1,686-$2,695
American Airlines
Mon 5/11Fri 9/11
SYD - IAD • 2 stops
Cheapest one-way flight
$622
Typical prices: $1,135-$1,960
Delta
Sun 18/11
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 12% compared to booking last minute.
Insights
Insights
When to travel
Cheapest • 21% 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

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
American Airlines Logo
14:42 - 09:00IAD  Washington, D.C. Dulles Intl-SYD Sydney Kingsford Smith
26h 18m2 stops Dallas/Fort Worth Los Angeles
$1,056American Airlines
Thu, 5 Nov - Mon, 9 Nov
American Airlines Logo
11:10 - 23:54SYD  Sydney Kingsford Smith-IAD Washington, D.C. Dulles Intl
28h 44m2 stops Los Angeles Charlotte Douglas
American Airlines Logo
10:44 - 09:00IAD  Washington, D.C. Dulles Intl-SYD Sydney Kingsford Smith
30h 16m2 stops Charlotte Douglas Los Angeles
$1,056American Airlines
Wed, 17 Mar - Sun, 21 Mar
Virgin Australia Logo
09:40 - 18:26SYD  Sydney Kingsford Smith-IAD Washington, D.C. Dulles Intl
23h 46m2 stops Los Angeles Atlanta Hartsfield-Jackson
Virgin Australia Logo
13:00 - 06:05IAD  Washington, D.C. Dulles Intl-SYD Sydney Kingsford Smith
26h 05m2 stops Atlanta Hartsfield-Jackson Los Angeles
$1,062Virgin Australia
Mon, 19 Oct - Wed, 28 Oct
Delta Logo
10:15 - 23:35SYD  Sydney Kingsford Smith-IAD Washington, D.C. Dulles Intl
28h 20m2 stops Los Angeles Salt Lake City
Delta Logo
10:14 - 07:20IAD  Washington, D.C. Dulles Intl-SYD Sydney Kingsford Smith
30h 06m2 stops Atlanta Hartsfield-Jackson Los Angeles
$1,065Delta
Mon, 16 Nov - Mon, 23 Nov
Air Canada Logo
10:45 - 11:48BNE  Brisbane-IAD Washington, D.C. Dulles Intl
40h 03m2 stops Vancouver Intl Ottawa
Air Canada Logo
17:37 - 08:45IAD  Washington, D.C. Dulles Intl-BNE Brisbane
48h 08m2 stops Ottawa Vancouver Intl
$1,427Air Canada
Wed, 18 Nov - Wed, 25 Nov
Air Canada Logo
10:45 - 20:23BNE  Brisbane-IAD Washington, D.C. Dulles Intl
24h 38m2 stops Vancouver Intl Montreal Pierre Elliott Trudeau Intl
Air Canada Logo
09:55 - 08:45IAD  Washington, D.C. Dulles Intl-BNE Brisbane
31h 50m2 stops Montreal Pierre Elliott Trudeau Intl Vancouver Intl
$1,444Air Canada
Wed, 17 Mar - Sun, 21 Mar
United Airlines Logo
10:20 - 07:19SYD  Sydney Kingsford Smith-IAD Washington, D.C. Dulles Intl
35h 59m2 stops Los Angeles Newark
United Airlines Logo
17:15 - 07:00IAD  Washington, D.C. Dulles Intl-SYD Sydney Kingsford Smith
22h 45m1 stop Houston George Bush Intcntl
$1,778United Airlines
Wed, 18 Nov - Sun, 17 Jan
United Airlines Logo
09:15 - 07:22SYD  Sydney Kingsford Smith-IAD Washington, D.C. Dulles Intl
38h 07m2 stops Houston George Bush Intcntl New York LaGuardia
United Airlines Logo
22:33 - 09:20IAD  Washington, D.C. Dulles Intl-SYD Sydney Kingsford Smith
42h 47m1 stop San Francisco
$1,783United Airlines
Wed, 10 Feb - Wed, 24 Feb
Etihad Airways Logo
18:20 - 09:00MEL  Melbourne-IAD Washington, D.C. Dulles Intl
30h 40m1 stop Abu Dhabi Zayed Intl
Etihad Airways Logo
14:25 - 16:45IAD  Washington, D.C. Dulles Intl-MEL Melbourne
34h 20m1 stop Abu Dhabi Zayed Intl
$1,895Etihad Airways
Mon, 21 Dec - Tue, 5 Jan
Virgin Australia Logo
07:10 - 00:59MEL  Melbourne-IAD Washington, D.C. Dulles Intl
33h 49m2 stops Brisbane San Francisco
Virgin Australia Logo
12:45 - 09:30IAD  Washington, D.C. Dulles Intl-MEL Melbourne
28h 45m1 stop Los Angeles
$3,370Virgin Australia
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 $1,056 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 $2,070, based on KAYAK data over the past 12 months. Return fares from Sydney average $1,960, while Brisbane runs a bit higher at $2,016.

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 $1,927 return on average over the past 12 months on KAYAK. Monday is the most expensive at $2,394.

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 $1,641 return.
•September ($2,612) and June ($2,581) 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 $2,028 return on average. Night flights are the most expensive at $2,598.

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

Flights under $1,686 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 $1,593
•Brisbane $1,655.

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 12% 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

$622
Beat the crowds with an average 33% drop in traveller numbers.
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 $1,686 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 $1,641 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 $2,070. 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?

    ANA 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 12% lower during this window than last-minute fares.
  • For flights to Washington, D.C. Dulles Intl Airport, a good return fare is around $1,686. 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 $1,641, 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 $570 on a return flight. Afternoon flights to Washington, D.C. Dulles Intl Airport average $2,028 compared to $2,598 for evening flights.
  • Once you arrive in Washington, D.C. Dulles Intl Airport, a few great places to start are Grand Hyatt Washington, JW Marriott Washington, DC, and Walter E. Washington Convention Center. 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 259 reviews
8.0Comfort
7.5Food
7.4Entertainment
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

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.

Did not like the check in guy quibbling over a couple pounds at the luggage weigh in

Just having a little bit more legroom would've been nice.

This is related to my second leg of the flight, from Washington DC to SFO. I understand things happen, but I got home at 3 am for a 12:59 am landing. I live 10 min from the airport. Bridge breaks when a few rows of the plane are off? Maintenance didn’t catch that?

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.

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

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.

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

Travelling to a place near Dulles Intl?

Book flights to Dulles Intl if you plan to visit one of these locations
Alexandria
Arlington
Greenbelt
Bethesda
Gettysburg
Easton
Bowie
Harpers Ferry
Linthicum Heights
Hunt Valley
Annapolis
Great Falls
Charles Town
Tysons
Laurel
Cambridge
Towson
Warrenton
Leesburg
Chantilly

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