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$475+ 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 12/4. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — SYD
Nov 21 — Nov 281
Fri 11/21
Fri 11/28
1 adult, Economy
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1. Tell us where you want to go

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Cheapflights Tip: The best prices from Baltimore/Washington to Sydney Kingsford Smith are usually found in September or February, booked 65 days in advance, depart on a Sunday or Thursday and return on a Tuesday

Cheap 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 October 22, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,144
(Qantas Airways)

One-way from

$475
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$1,598
Provider with most accurate pricing for Baltimore/Washington-Sydney Kingsford Smith flight deals.
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Provider most trusted by Cheapflights users for Baltimore/Washington-Sydney Kingsford Smith flights.
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From Baltimore/Washington to Sydney Kingsford Smith
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One-way flight from Baltimore/Washington to Sydney Kingsford Smith
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Highest demand for flights based on searches. 15% potential increase in price ($279 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($38 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find 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 October 22, 2025.

This Mytrip deal was found by Cheapflights users on 10/19. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1710:22 amBWI - SYD
2 stops29h 03mMultiple Airlines
Mon 11/245:45 pmSYD - BWI
2 stops31h 46mMultiple Airlines
Deal found 10/19$1,185
This Cheapflightsfares deal was found by Cheapflights users on 10/22. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/23:07 pmBWI - SYD
1 stop23h 48mQantas Airways
Wed 1/142:05 pmSYD - BWI
1 stop25h 03mQantas Airways
Deal found 10/22$1,234
This American Airlines deal was found by Cheapflights users on 10/20. 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 10/291:27 pmBWI - SYD
1 stop26h 28mAmerican Airlines
Wed 11/192:05 pmSYD - BWI
1 stop24h 57mAmerican Airlines
Deal found 10/20$1,275
This American Airlines deal was found by Cheapflights users on 10/20. 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.
Tue 10/211:27 pmBWI - SYD
2 stops27h 38mAmerican Airlines
Wed 2/1111:20 amSYD - BWI
2 stops27h 48mAmerican Airlines
Deal found 10/20$1,278
This American Airlines deal was found by Cheapflights users on 10/22. 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.
Tue 12/23:07 pmBWI - SYD
1 stop23h 48mAmerican Airlines
Wed 1/142:05 pmSYD - BWI
2 stops23h 18mAmerican Airlines
Deal found 10/22$1,280
This Cheapflightsfares deal was found by Cheapflights users on 10/22. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/143:23 pmBWI - SYD
1 stop23h 32mQantas Airways
Sun 12/72:05 pmSYD - BWI
1 stop24h 49mQantas Airways
Deal found 10/22$1,281
This United Airlines deal was found by Cheapflights users on 10/21. 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 12/16:00 amBWI - SYD
1 stop33h 00mUnited Airlines
Wed 12/312:00 pmSYD - BWI
1 stop23h 54mUnited Airlines
Deal found 10/21$1,291
This American Airlines deal was found by Cheapflights users on 10/19. 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.
Tue 11/113:23 pmBWI - SYD
1 stop23h 32mAmerican Airlines
Wed 12/107:20 amSYD - BWI
2 stops23h 08mAmerican Airlines
Deal found 10/19$1,299
This United Airlines deal was found by Cheapflights users on 10/19. 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.
Sat 11/86:16 pmBWI - SYD
1 stop44h 44mUnited Airlines
Sun 11/2311:50 amSYD - BWI
1 stop26h 51mUnited Airlines
Deal found 10/19$1,300

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 October 22, 2025.
Use the filters below to find and compare flights from Baltimore to Sydney that are best for you.

Fly from

Baltimore

Fly to

Sydney

Route

Depart

Return

Price

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Tue 2/24

6:00 am-7:00 am

1 stop33h 00m

Sydney Kingsford Smith

Tue 3/10

11:50 am-10:29 pm

1 stop25h 39m

$1,291

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Mon 2/2

6:34 pm-9:15 am

1 stop22h 41m

Sydney Kingsford Smith

Wed 4/22

10:20 am-8:57 pm

2 stops24h 37m

$1,295

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Tue 2/3

12:25 pm-6:20 am

2 stops25h 55m

Sydney Kingsford Smith

Sun 4/19

9:30 am-4:47 pm

1 stop21h 17m

$1,295

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Tue 2/3

4:10 pm-9:15 am

2 stops25h 05m

Sydney Kingsford Smith

Mon 4/20

9:30 am-4:47 pm

1 stop21h 17m

$1,295

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Wed 2/4

10:05 am-6:20 am

2 stops28h 15m

Sydney Kingsford Smith

Mon 4/20

9:30 am-4:47 pm

1 stop21h 17m

$1,295

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Sun 2/1

12:25 pm-6:20 am

2 stops25h 55m

Sydney Kingsford Smith

Mon 4/20

10:20 am-8:57 pm

2 stops24h 37m

$1,295

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Mon 2/2

4:10 pm-9:05 am

2 stops24h 55m

Sydney Kingsford Smith

Mon 4/20

10:20 am-8:57 pm

2 stops24h 37m

$1,295

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Mon 2/2

12:25 pm-6:20 am

2 stops25h 55m

Sydney Kingsford Smith

Sun 4/19

9:30 am-8:57 pm

2 stops25h 27m

$1,295

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Sat 2/14

6:25 pm-6:20 am

1 stop43h 55m

Sydney Kingsford Smith

Tue 4/7

9:30 am-11:00 pm

2 stops27h 30m

$1,308

BaltimoreSydney

BWI - SYD

BWISYD

Baltimore/Washington

Fri 2/6

3:52 pm-7:00 am

1 stop23h 08m

Sydney Kingsford Smith

Mon 4/20

10:20 am-5:32 pm

1 stop21h 12m

$1,341

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/22

Showing 1-10 of 20 results
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 October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice 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?

Use this chart to determine the optimal time to book a round-trip flight from Baltimore to Sydney. Price data was last updated on October 17, 2025.

The best time to book flights from Baltimore to Sydney is 65 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, August is the cheapest month in which you can book a flight from Baltimore to Sydney (average of $137). Flying from Baltimore to Sydney in October is currently the most expensive (average of $839). 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.

What is the cheapest time of day to fly from BWI to SYD?

Find hourly flight availability from Baltimore to Sydney. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 22, 2025.

Unlike in the evening, when flights are generally more expensive, you can save up to 27% on flights from Baltimore to Sydney by exploring options for tickets in the morning.

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 October 22, 2025.
Read reviews from past customers who have flown Delta, Qantas Airways, and United 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
7.9
Good
7,979 reviews

Overall

7.9

Food

7.3

Comfort

7.9

Crew

8.5

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
Delta
7.9
Good
7,979 reviews
Delta
7.9
Good
7,979 reviews

Overall

7.9

Food

7.3

Comfort

7.9

Crew

8.5

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
Qantas Airways
7.5
Good
922 reviews
Delta
7.9
Good
7,979 reviews

Overall

7.9

Food

7.3

Comfort

7.9

Crew

8.5

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
United Airlines
7.4
Good
8,988 reviews
Delta
7.9
Good
7,979 reviews

Overall

7.9

Food

7.3

Comfort

7.9

Crew

8.5

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
American Airlines
7.2
Good
11,028 reviews
Delta
7.9
Good
7,979 reviews

Overall

7.9

Food

7.3

Comfort

7.9

Crew

8.5

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.

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 33h. 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 ($276), Qantas Airways ($787), and American Airlines ($858) offers the cheapest pricing from Baltimore to Sydney. You may be able to fly from Baltimore to Sydney for 81% 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, August is the cheapest month in which you can book a flight from Baltimore to Sydney (average of $137). Flying from Baltimore to Sydney in October is currently the most expensive (average of $839). 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
Manly
Coogee

Browse thousands of different options on Cheapflights for your next trip

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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 October 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$276Average$1,390FlexibilityNo cancel feeOn-timeN/A
Qantas AirwaysCheapest$787Average$1,481FlexibilityNo cancel feeOn-time74%
American AirlinesCheapest$858Average$1,438FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$1,180Average$1,565FlexibilityNo cancel feeOn-time69%

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