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$401+ Cheap flights from Detroit (DTT) 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.
DTT — SYD
Aug 4 — Aug 111
Mon 8/4
Mon 8/11
1 adult, Economy
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Cheapflights Tip: The best prices from Detroit All airports to Sydney Kingsford Smith are usually found in February or March, booked 78 days in advance, depart on a Tuesday or Wednesday and return on a Monday

Cheap flight deals from Detroit to Sydney

Discover tips and strategies to find the most affordable flight options for your journey from Detroit (DTT) 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 July 30, 2025.

Round-trip from

$765
(lol.travel)

One-way from

$401
(American Airlines)

Popular in

September

Cheapest in

February

Average price

$1,085
From Detroit (DTT) to Sydney Kingsford Smith
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One-way flight from Detroit (DTT) to Sydney Kingsford Smith
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Highest demand for flights based on searches. 6% potential increase in price ($73 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($29 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find flight deals from Detroit to Sydney

Cheapest flights from Detroit to Sydney
Explore the most affordable flight options available from Detroit to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 30, 2025.

This lol.travel deal was found by Cheapflights users on 7/28. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/19:20 amDTW - SYD
2 stops31h 40mUnited Airlines
Sun 9/149:30 amSYD - DTW
2 stops26h 52mUnited Airlines
Deal found 7/28$765
This lol.travel deal was found by Cheapflights users on 7/28. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/17:44 pmDTW - SYD
1 stop21h 11mQantas Airways
Sun 9/1412:10 pmSYD - DTW
1 stop24h 23mQantas Airways
Deal found 7/28$781
This Air Canada deal was found by Cheapflights users on 7/28. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/99:55 amDTW - SYD
2 stops31h 25mAir Canada
Sun 8/249:20 amSYD - DTW
2 stops26h 06mAir Canada
Deal found 7/28$785
This Air Canada deal was found by Cheapflights users on 7/28. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/162:10 pmDTW - SYD
3 stops27h 10mMultiple Airlines
Sun 8/249:20 amSYD - DTW
2 stops26h 06mMultiple Airlines
Deal found 7/28$814
This Delta deal was found by Cheapflights users on 7/28. 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.
Wed 9/246:30 pmDTW - SYD
1 stop22h 05mDelta
Tue 10/710:25 amSYD - DTW
1 stop27h 30mDelta
Deal found 7/28$819
This American Airlines deal was found by Cheapflights users on 7/28. 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.
Sat 8/94:07 pmDTW - SYD
1 stop24h 48mAmerican Airlines
Sun 8/2412:10 pmSYD - DTW
1 stop24h 03mAmerican Airlines
Deal found 7/28$873

Cheapflights Fare Finder

 
Customize your flight search to find flights from Detroit 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 July 30, 2025.
Use the filters below to find and compare flights from Detroit to Sydney that are best for you.

Fly from

Detroit

Fly to

Sydney

Route

Depart

Return

Price

DetroitSydney

DTW - SYD

DTWSYD

Detroit Metropolitan Wayne County

Mon 9/1

9:20 am-7:00 am

2 stops31h 40m

Sydney Kingsford Smith

Sun 9/14

9:30 am-10:22 pm

2 stops26h 52m

$765

DetroitSydney

DTW - SYD

DTWSYD

Detroit Metropolitan Wayne County

Mon 9/1

7:44 pm-6:55 am

1 stop21h 11m

Sydney Kingsford Smith

Sun 9/14

12:10 pm-10:33 pm

1 stop24h 23m

$781

DetroitSydney

DTW - SYD

DTWSYD

Detroit Metropolitan Wayne County

Sat 8/9

9:55 am-7:20 am

2 stops31h 25m

Sydney Kingsford Smith

Sun 8/24

9:20 am-9:26 pm

2 stops26h 06m

$785

DetroitSydney

DTW - SYD

DTWSYD

Detroit Metropolitan Wayne County

Sat 8/16

2:10 pm-7:20 am

3 stops27h 10m

Sydney Kingsford Smith

Sun 8/24

9:20 am-9:26 pm

2 stops26h 06m

$814

DetroitSydney

DTW - SYD

DTWSYD

Detroit Metropolitan Wayne County

Wed 9/24

6:30 pm-6:35 am

1 stop22h 05m

Sydney Kingsford Smith

Tue 10/7

10:25 am-10:55 pm

1 stop27h 30m

$819

DetroitSydney

DTW - SYD

DTWSYD

Detroit Metropolitan Wayne County

Sat 8/9

4:07 pm-6:55 am

1 stop24h 48m

Sydney Kingsford Smith

Sun 8/24

12:10 pm-10:13 pm

1 stop24h 03m

$873

DetroitSydney

DTW - SYD

DTWSYD

Detroit Metropolitan Wayne County

Tue 9/30

3:14 pm-7:05 am

2 stops25h 51m

$401

DetroitSydney

DTW - SYD

DTWSYD

Detroit Metropolitan Wayne County

Sat 9/27

5:45 pm-6:55 am

1 stop23h 10m

$409

DetroitSydney

DTW - SYD

DTWSYD

Detroit Metropolitan Wayne County

Sun 8/3

7:40 pm-6:55 am

1 stop21h 15m

$450

DetroitSydney

DTW - SYD

DTWSYD

Detroit Metropolitan Wayne County

Fri 10/3

8:25 pm-6:35 am

2 stops44h 10m

$467

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Showing 1-10 of 14 results
1
2

Best time to book a flight from Detroit to Sydney

Have a flexible travel schedule? Discover the best time to fly to Sydney from Detroit 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 Detroit to Sydney

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

Use this chart to determine the optimal time to book a round-trip flight from Detroit to Sydney. Price data was last updated on July 25, 2025.

To ensure you get the cheapest price possible for a flight from Detroit to Sydney, you should look to book at least 77 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 Detroit to Sydney?

Currently, February is the cheapest month in which you can book a flight from Detroit to Sydney (average of $1,028). Flying from Detroit to Sydney in December is currently the most expensive (average of $1,619). 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 DTT to SYD?

Find hourly flight availability from Detroit 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 July 30, 2025.

It’s optimal to fly from Detroit to Sydney at noon. By choosing this option you can save up to 37% on the cost of your flight, compared to a flight in the afternoon.

What is the cheapest day to fly from Detroit to Sydney?

Use this chart to determine the cheapest time to fly round-trip from Detroit to Sydney. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Detroit to Sydney flight should consider departing on Tuesday mornings when fares are most often at their lowest. Thursday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

How much does it cost to fly round-trip from Detroit 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 July 30, 2025.
Peruse reviews from past customers who have flown with Delta, KLM, and Qantas Airways from Detroit to Sydney to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,980 reviews

Entertainment

7.9

Boarding

8.2

Overall

8.0

Food

7.3

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,980 reviews
Delta
8.0
Very good
7,980 reviews

Entertainment

7.9

Boarding

8.2

Overall

8.0

Food

7.3

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
KLM
7.8
Good
1,383 reviews
Delta
8.0
Very good
7,980 reviews

Entertainment

7.9

Boarding

8.2

Overall

8.0

Food

7.3

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Qantas Airways
7.5
Good
887 reviews
Delta
8.0
Very good
7,980 reviews

Entertainment

7.9

Boarding

8.2

Overall

8.0

Food

7.3

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
LATAM Airlines
7.5
Good
1,822 reviews
Delta
8.0
Very good
7,980 reviews

Entertainment

7.9

Boarding

8.2

Overall

8.0

Food

7.3

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,896 reviews
Delta
8.0
Very good
7,980 reviews

Entertainment

7.9

Boarding

8.2

Overall

8.0

Food

7.3

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

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

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

    According to our current data, United Airlines ($765), Qantas Airways ($781), and Air Canada ($785) offers the cheapest pricing from Detroit to Sydney. United Airlines is currently priced 28% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from Detroit to Sydney one-way?

    The cheapest airlines for a one-way flight from Detroit to Sydney are American Airlines ($401), United Airlines ($409), and Qantas Airways ($450).

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

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

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

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

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

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

    Currently, February is the cheapest month in which you can book a flight from Detroit to Sydney (average of $1,028). Flying from Detroit to Sydney in December is currently the most expensive (average of $1,619). 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
Wollongong
Parramatta
Manly
Coogee

Browse thousands of different options on Cheapflights for your next trip

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Top 6 airlines flying from Detroit to Sydney

Discover the top 6 airlines that operate flights from Detroit 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 July 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$723Average$1,251FlexibilityNo cancel feeOn-time67%
Qantas AirwaysCheapest$838Average$1,076FlexibilityNo cancel feeOn-time74%
American AirlinesCheapest$839Average$905FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$842Average$1,007FlexibilityNo cancel feeOn-time69%
DeltaCheapest$843Average$1,395FlexibilityNo cancel feeOn-timeN/A
Air New ZealandCheapest$864Average$1,385FlexibilityNo cancel feeOn-time78%

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