Cheap flights from Washington, D.C. Reagan-National Airport to Sydney from $864

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 31/10. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — SYD
15 Oct — 22 Oct1
1 adult
1 adult, Economy

Cheap flight deals from Reagan-National to Sydney

Discover tips and strategies to find the most affordable flight options for your journey from Reagan-National (DCA) to Sydney (SYD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 15 September 2025.

Round-trip from

$1,784

One-way from

$864

Popular in

January

Cheapest in

March

Average price

$1,401
Alaska Airlines
  • Alaska Airlines
  • 27/11-23/12
  • 4 total stops
  • 78h 12m total
  • Washington, D.C. to Sydney
31/10
  • 31/10
  • 2 total stops
  • 34h 00m total
  • Washington, D.C. to Sydney
Highest demand for flights based on searches. 12% potential increase in price ($380 potential increase over avg. return price).
Cheapest flight prices on average. 4% potential price decrease ($113 potential savings vs. average return price).
Average for round-trip flights in September 2025

Find flight deals from Reagan-National to Sydney

Cheapest flights from Reagan-National to Sydney
Explore the most affordable flight options available from Reagan-National to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 September 2025.

Thu 27/1108:00DCA - SYD
2 stops43h 45mAlaska Airlines
Mon 22/1221:40SYD - DCA
2 stops40h 19mAlaska Airlines
Deal found 13/9$1,784
Wed 26/1117:00DCA - SYD
2 stops58h 45mAlaska Airlines
Tue 23/1221:40SYD - DCA
2 stops34h 27mAlaska Airlines
Deal found 13/9$1,787
Thu 13/1108:00DCA - SYD
2 stops43h 45mAlaska Airlines
Sat 22/1121:40SYD - DCA
2 stops40h 19mAlaska Airlines
Deal found 14/9$1,834
Tue 25/1108:00DCA - SYD
2 stops43h 45mAlaska Airlines
Wed 24/1221:40SYD - DCA
2 stops34h 27mAlaska Airlines
Deal found 13/9$1,850
Tue 11/1117:00DCA - SYD
2 stops34h 45mAlaska Airlines
Sat 22/1121:40SYD - DCA
2 stops40h 19mAlaska Airlines
Deal found 14/9$1,862
Tue 28/1017:00DCA - SYD
2 stops35h 45mAlaska Airlines
Tue 4/1121:40SYD - DCA
2 stops35h 13mAlaska Airlines
Deal found 13/9$1,884
Thu 13/1108:00DCA - SYD
2 stops43h 45mAlaska Airlines
Fri 21/1121:40SYD - DCA
2 stops34h 26mAlaska Airlines
Deal found 14/9$1,903
Tue 28/1017:00DCA - SYD
2 stops35h 45mAlaska Airlines
Sat 8/1121:40SYD - DCA
2 stops35h 13mAlaska Airlines
Deal found 14/9$1,918
Tue 16/919:35DCA - SYD
2 stops36h 35mFiji Airways
Tue 23/906:00SYD - DCA
2 stops31h 00mFiji Airways
Deal found 15/9$1,927
Tue 11/1117:00DCA - SYD
2 stops34h 45mAlaska Airlines
Fri 21/1121:40SYD - DCA
2 stops34h 26mAlaska Airlines
Deal found 14/9$1,932
Sun 2/1112:50DCA - SYD
2 stops27h 55mAir New Zealand
Mon 17/1109:55SYD - DCA
2 stops26h 50mAir New Zealand
Deal found 12/9$1,942

Cheapflights Fare Finder

 
Customise your flight search to find flights from Reagan-National to Sydney that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 647,157 searches. Data last updated 15 September 2025.
Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport to Sydney that are best for you.

Fly from

Reagan-National

Fly to

Sydney

Route

Depart

Return

Price

Washington, D.C.Sydney

DCA - SYD

DCASYD

Washington, D.C. Reagan-National

Thu 27/11

08:00-19:45

2 stops43h 45m

Sydney Kingsford Smith

Wed 24/12

21:40-16:07

2 stops34h 27m

$1,784

Washington, D.C.Sydney

DCA - SYD

DCASYD

Washington, D.C. Reagan-National

Mon 19/1

17:30-19:45

2 stops34h 15m

Sydney Kingsford Smith

Fri 6/2

21:40-16:15

2 stops34h 35m

$1,792

Washington, D.C.Sydney

DCA - SYD

DCASYD

Washington, D.C. Reagan-National

Tue 24/2

17:30-19:45

2 stops34h 15m

Sydney Kingsford Smith

Fri 6/3

21:40-21:55

2 stops40h 15m

$1,805

Washington, D.C.Sydney

DCA - SYD

DCASYD

Washington, D.C. Reagan-National

Sun 16/11

08:00-19:45

2 stops43h 45m

Sydney Kingsford Smith

Fri 21/11

21:40-16:06

2 stops34h 26m

$1,903

Washington, D.C.Sydney

DCA - SYD

DCASYD

Washington, D.C. Reagan-National

Tue 28/10

17:00-19:45

2 stops35h 45m

Sydney Kingsford Smith

Sat 8/11

21:40-16:53

2 stops35h 13m

$1,918

Washington, D.C.Sydney

DCA - SYD

DCASYD

Washington, D.C. Reagan-National

Tue 11/11

17:00-19:45

2 stops34h 45m

Sydney Kingsford Smith

Fri 21/11

21:40-16:06

2 stops34h 26m

$1,932

Washington, D.C.Sydney

DCA - SYD

DCASYD

Washington, D.C. Reagan-National

Fri 31/10

17:00-19:45

2 stops35h 45m

Sydney Kingsford Smith

Sun 16/11

21:40-16:53

2 stops35h 13m

$2,002

Washington, D.C.Sydney

DCA - SYD

DCASYD

Washington, D.C. Reagan-National

Sat 28/2

17:10-12:30

2 stops27h 20m

Sydney Kingsford Smith

Tue 24/3

14:10-23:00

2 stops23h 50m

$2,041

Washington, D.C.Sydney

DCA - SYD

DCASYD

Washington, D.C. Reagan-National

Sat 28/2

17:10-12:30

2 stops27h 20m

Sydney Kingsford Smith

Thu 12/3

14:10-23:00

2 stops23h 50m

$2,041

Washington, D.C.Sydney

DCA - SYD

DCASYD

Washington, D.C. Reagan-National

Tue 27/1

17:11-12:30

2 stops27h 19m

Sydney Kingsford Smith

Thu 5/2

14:10-20:59

2 stops22h 49m

$2,105

Flights are sorted by cheapest return flights first.

Deals found on 13/9

Showing 1-10 of 20 results
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Best time to book a flight from Reagan-National to Sydney

Have a flexible travel schedule? Discover the best time to fly to Sydney from Reagan-National with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. Reagan-National Airport to Sydney

How far ahead should I book a flight from Washington, D.C. Reagan-National Airport to Sydney?

Use this chart to determine the optimal time to book a return flight from Reagan-National to Sydney. Price data was last updated on 12 September 2025.

To ensure you get the cheapest price possible for a flight from Washington, D.C. Reagan-National Airport to Sydney, you should look to book at least 11 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Washington, D.C. Reagan-National Airport to Sydney?

Currently, May is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to Sydney (average of $129). Flying from Washington, D.C. Reagan-National Airport to Sydney in October is currently the most expensive (average of $171). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from Reagan-National to Sydney. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What airport do you fly into for flights to Sydney from Washington, D.C. Reagan-National?

    Located just 7.5 km from the city centre, Sydney Kingsford Smith is the airport most travellers will use when flying to Sydney from Washington, D.C. Reagan-National. Booking flights from Washington, D.C. Reagan-National to Kingsford Smith (SYD) should be relatively easy as there are 0 daily inbound flights from Washington, D.C. Reagan-National from 0 different airlines.

  • How long is the flight from Washington, D.C. Reagan-National Airport to Sydney?

    There are many flights that can get you from Washington, D.C. Reagan-National Airport to Sydney in 27h 20m. Fly via Alaska Airlines or Fiji Airways to get the fastest option. Airlines will cover a distance of 15704 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • Can I find deals for flights from Reagan-National to Sydney that include hotel bookings?

    Yes. In addition to deals on Reagan-National to Sydney flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Reagan-National to Sydney?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Reagan-National to Sydney.

  • Can I find deals for business class flights from Reagan-National to Sydney?

    Yes. Cheapflights offers flight deals from Reagan-National to Sydney by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Washington, D.C. Reagan-National Airport to Sydney?

    Currently, May is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to Sydney (average of $129). Flying from Washington, D.C. Reagan-National Airport to Sydney in October is currently the most expensive (average of $171). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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