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$515+ Cheap flights from Baltimore (BWI) to Sydney (SYD)

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 9/30. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — SYD
Jul 28 — Aug 41
Tue 7/28
Tue 8/4
1 adult, Economy
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Cheap flight deals from Baltimore to Sydney

Cheapest flights from Baltimore to Sydney
Explore the most affordable flight options available from Baltimore to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 28, 2026.

This United Airlines deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/286:59 pm
BWI
-
SYD
1 stop21h 56m
United Airlines
Sun 7/1210:20 am
SYD
-
BWI
1 stop21h 37m
United Airlines
Deal found 6/25$1,173
This American Airlines deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/103:55 pm
BWI
-
SYD
1 stop25h 00m
American Airlines
Mon 8/179:10 am
SYD
-
BWI
2 stops25h 39m
American Airlines
Deal found 6/25$1,174
This United Airlines deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/103:03 pm
BWI
-
SYD
2 stops25h 57m
United Airlines
Mon 9/2810:20 am
SYD
-
BWI
1 stop21h 19m
United Airlines
Deal found 6/26$1,186
This United Airlines deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/103:03 pm
BWI
-
SYD
2 stops25h 57m
United Airlines
Mon 8/1710:20 am
SYD
-
BWI
1 stop21h 23m
United Airlines
Deal found 6/24$1,187
This American Airlines deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/53:55 pm
BWI
-
SYD
2 stops25h 10m
American Airlines
Wed 8/1912:00 pm
SYD
-
BWI
2 stops23h 52m
American Airlines
Deal found 6/24$1,188
This United Airlines deal was found by Cheapflights users on 6/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/114:18 pm
BWI
-
SYD
2 stops24h 42m
United Airlines
Mon 9/2810:20 am
SYD
-
BWI
2 stops24h 42m
United Airlines
Deal found 6/26$1,190
This United Airlines deal was found by Cheapflights users on 6/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/96:38 am
BWI
-
SYD
2 stops34h 22m
United Airlines
Sun 8/169:30 am
SYD
-
BWI
3 stops40h 15m
United Airlines
Deal found 6/25$1,191
This Delta deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1012:03 pm
BWI
-
SYD
2 stops28h 47m
Delta
Mon 8/249:15 am
SYD
-
BWI
2 stops28h 03m
Delta
Deal found 6/23$1,192
This oojo deal was found by Cheapflights users on 6/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/307:27 am
BWI
-
SYD
1 stop33h 28m
Qantas Airways
Tue 7/1412:00 pm
SYD
-
BWI
1 stop21h 24m
Qantas Airways
Deal found 6/24$1,200

Find flight deals from Baltimore to Sydney

Discover tips and strategies to find the most affordable flight options for your journey from Baltimore (BWI) 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 June 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,174
(American Airlines)

One-way from

$515
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$1,370
Provider with most accurate pricing for Baltimore/Washington-Sydney Kingsford Smith flight deals.
Search Deals
Provider most trusted by Cheapflights users for Baltimore/Washington-Sydney Kingsford Smith flights.
Search Deals
From Baltimore/Washington to Sydney Kingsford Smith
Search Deals
One-way flight from Baltimore/Washington to Sydney Kingsford Smith
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($98 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($37 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Baltimore 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 2,558,603 searches. Data last updated June 28, 2026.
Use the filters below to find and compare flights from Baltimore to Sydney that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Sun 7/26

6:59 pm-6:55 am

1 stop21h 56m

Sydney Kingsford Smith

Sun 8/16

10:20 am-5:43 pm

1 stop21h 23m

$1,186

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Mon 7/27

6:59 pm-6:55 am

1 stop21h 56m

Sydney Kingsford Smith

Mon 8/3

10:20 am-5:57 pm

1 stop21h 37m

$1,186

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Sun 8/9

7:23 pm-7:00 am

1 stop21h 37m

Sydney Kingsford Smith

Sun 8/16

10:20 am-5:43 pm

1 stop21h 23m

$1,186
Quickest round-trip

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Sun 8/9

7:23 pm-7:00 am

1 stop21h 37m

Sydney Kingsford Smith

Sun 8/23

9:30 am-4:35 pm

1 stop21h 05m

$1,186

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Thu 7/30

7:23 pm-7:00 am

1 stop21h 37m

Sydney Kingsford Smith

Wed 8/12

9:30 am-4:35 pm

1 stop21h 05m

$1,238

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Tue 9/1

8:30 am-6:55 am

2 stops32h 25m

Sydney Kingsford Smith

Sun 9/13

10:20 am-5:40 pm

1 stop21h 20m

$1,312

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Fri 10/23

1:00 pm-7:50 am

2 stops27h 50m

Sydney Kingsford Smith

Mon 11/9

10:40 am-6:07 pm

2 stops23h 27m

$1,362

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Sun 8/2

10:33 am-6:50 am

2 stops30h 17m

Sydney Kingsford Smith

Sun 8/23

9:15 am-11:18 pm

2 stops28h 03m

$1,422

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Mon 9/7

6:52 pm-6:55 am

1 stop22h 03m

Sydney Kingsford Smith

Mon 9/28

10:20 am-5:39 pm

1 stop21h 19m

$1,457

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Tue 10/13

4:13 pm-8:00 am

2 stops24h 47m

Sydney Kingsford Smith

Fri 11/6

9:15 am-4:20 pm

1 stop23h 05m

$1,512

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/27

Showing 1-10 of 18 resultsSorted by cheapest first
1
2

Compare providers for flights from Baltimore to Sydney

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Baltimore to Sydney in June.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Baltimore-Sydney flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Baltimore-Sydney flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Baltimore-Sydney flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Baltimore-Sydney flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Baltimore-Sydney flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Baltimore to Sydney

Have a flexible travel schedule? Discover the best time to fly to Sydney from Baltimore with our price prediction graph.
Estimated round-trip 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 Baltimore to Sydney

How far ahead should I book a flight from Baltimore to Sydney?

The best time to book flights from Baltimore to Sydney is 64 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Baltimore to Sydney?

Currently, September is the cheapest month in which you can book a flight from Baltimore to Sydney (average of $875). Flying from Baltimore to Sydney in December is currently the most expensive (average of $1,799). 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.

How much does it cost to fly round-trip from Baltimore to Sydney?

Reviews of airlines servicing Sydney

Get insights into the airlines that provide service to Sydney. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Sydney. Reviews last updated June 28, 2026.
Read reviews from past customers who have flown Delta,Qantas Airways, andUnited Airlines from Baltimore to Sydney. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.8
Good
8,456 reviews

Food

7.2

Overall

7.8

Comfort

7.8

Boarding

8.1

Crew

8.5

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
Delta
7.8
Good
8,456 reviews
Delta
7.8
Good
8,456 reviews

Food

7.2

Overall

7.8

Comfort

7.8

Boarding

8.1

Crew

8.5

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
Qantas Airways
7.5
Good
1,053 reviews
Delta
7.8
Good
8,456 reviews

Food

7.2

Overall

7.8

Comfort

7.8

Boarding

8.1

Crew

8.5

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
United Airlines
7.4
Good
9,901 reviews
Delta
7.8
Good
8,456 reviews

Food

7.2

Overall

7.8

Comfort

7.8

Boarding

8.1

Crew

8.5

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
American Airlines
7.1
Good
11,779 reviews
Delta
7.8
Good
8,456 reviews

Food

7.2

Overall

7.8

Comfort

7.8

Boarding

8.1

Crew

8.5

Entertainment

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional

Related info for your journey

Find useful and relevant information for your journey from Baltimore to Sydney. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Baltimore to Sydney?

    Airlines like United Airlines fly from Baltimore to Sydney in about 21h 56m. The time it takes to get you to your destination can typically vary by up to . There are 9781 mi between Baltimore and Sydney.

  • What are the cheapest airlines flying from Baltimore to Sydney round-trip?

    According to our current data, Delta ($282), Qantas Airways ($787), and United Airlines ($987) offers the cheapest pricing from Baltimore to Sydney. You may be able to fly from Baltimore to Sydney for 80% less than the average price by searching for these airlines.

  • Can I find deals for flights from Baltimore to Sydney that include hotel bookings?

    Yes. In addition to deals on Baltimore to Sydney flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Baltimore to Sydney?

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

  • Can I find deals for business class flights from Baltimore to Sydney?

    Yes. Cheapflights offers flight deals from Baltimore 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 Baltimore to Sydney?

    Currently, September is the cheapest month in which you can book a flight from Baltimore to Sydney (average of $875). Flying from Baltimore to Sydney in December is currently the most expensive (average of $1,799). 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

Traveling to a place near Sydney?

Book flights to Sydney if you plan to visit one of these locations
Parramatta
Wollongong
Coogee
Manly

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Baltimore to Sydney

See prices for flight routes from nearby airports that may be better suited for you.
Dulles Intl to Sydney flights
Reagan-National to Sydney flights
Philadelphia to Sydney flights

Top 4 airlines flying from Baltimore to Sydney

Discover the top 4 airlines that operate flights from Baltimore to Sydney. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 28, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$282Average$795FlexibilityNo cancel feeOn-timeN/A
Qantas AirwaysCheapest$787Average$1,291FlexibilityNo cancel feeOn-time74%
United AirlinesCheapest$987Average$1,466FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$1,233Average$1,549FlexibilityNo cancel feeOn-time71%

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