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 15/2. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SYD
20 Dec — 27 Dec1
Return
1 adult
Economy
Return
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Denver Intl to Sydney Kingsford Smith are usually found in April or May, booked 84 days in advance, depart on a Wednesday or Saturday and return on a Monday
Cheap flight deals from Denver to Sydney
Discover tips and strategies to find the most affordable flight options for your journey from Denver (DEN) 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 20 November 2025.
Explore the most affordable flight options available from Denver to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 November 2025.
Sat 6/1209:30DEN - SYD
2 stops27h 55mMultiple Airlines
Fri 16/111:20SYD - DEN
1 stop30h 45mMultiple Airlines
Deal found 17/11$1,548
Sun 30/1110:00DEN - SYD
2 stops32h 35mMultiple Airlines
Sun 7/1206:00SYD - DEN
2 stops36h 17mMultiple Airlines
Deal found 20/11$1,635
Thu 4/1206:00DEN - SYD
2 stops31h 25mMultiple Airlines
Wed 10/1211:20SYD - DEN
2 stops29h 09mMultiple Airlines
Deal found 19/11$1,641
Wed 3/1217:01DEN - SYD
1 stop20h 24mMultiple Airlines
Sat 6/1211:20SYD - DEN
1 stop23h 21mMultiple Airlines
Deal found 19/11$1,647
Sun 7/1206:00DEN - SYD
1 stop31h 25mMultiple Airlines
Wed 14/106:00SYD - DEN
2 stops29h 24mMultiple Airlines
Deal found 17/11$1,816
Sun 7/1206:00DEN - SYD
1 stop31h 25mMultiple Airlines
Sun 21/1217:45SYD - DEN
2 stops22h 54mMultiple Airlines
Deal found 19/11$1,817
Sun 7/1206:00DEN - SYD
1 stop31h 25mMultiple Airlines
Sat 17/116:55SYD - DEN
2 stops34h 35mMultiple Airlines
Deal found 17/11$1,825
Best flights from Denver to Sydney
Discover carefully curated flight deals from Denver to Sydney that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 20 November 2025.
Wed 3/1210:05DEN - SYD
2 stops63h 40mAlaska Airlines
Thu 15/121:40SYD - DEN
2 stops31h 58mAlaska Airlines
Deal found 17/11$2,100
Sat 9/521:25DEN - SYD
1 stop41h 35mUnited Airlines
Sun 17/510:20SYD - DEN
1 stop23h 58mUnited Airlines
Deal found 18/11$2,117
Fri 30/112:53DEN - SYD
1 stop26h 07mQantas Airways
Tue 10/211:20SYD - DEN
1 stop25h 33mQantas Airways
Deal found 18/11$2,159
Fri 8/518:25DEN - SYD
2 stops20h 10mDelta
Mon 18/509:25SYD - DEN
2 stops21h 46mDelta
Deal found 18/11$2,188
Wed 3/1209:11DEN - SYD
2 stops41h 39mMultiple Airlines
Mon 8/1208:45SYD - DEN
2 stops45h 38mMultiple Airlines
Deal found 18/11$2,307
Wed 3/1210:05DEN - SYD
2 stops63h 40mAlaska Airlines
Sun 18/121:40SYD - DEN
2 stops31h 58mAlaska Airlines
Deal found 17/11$2,100
Fri 8/508:20DEN - SYD
2 stops43h 25mAlaska Airlines
Sat 16/521:40SYD - DEN
2 stops30h 20mAlaska Airlines
Deal found 18/11$2,149
Fri 8/508:20DEN - SYD
2 stops43h 25mAlaska Airlines
Tue 19/521:40SYD - DEN
2 stops32h 18mAlaska Airlines
Deal found 18/11$2,149
Fri 8/512:30DEN - SYD
2 stops39h 15mAlaska Airlines
Fri 15/521:40SYD - DEN
2 stops29h 54mAlaska Airlines
Deal found 18/11$2,149
Tue 9/1212:40DEN - SYD
2 stops37h 05mAlaska Airlines
Sun 18/121:40SYD - DEN
2 stops31h 58mAlaska Airlines
Deal found 17/11$2,231
Mon 8/1218:59DEN - SYD
2 stops54h 46mAlaska Airlines
Mon 19/121:40SYD - DEN
2 stops32h 58mAlaska Airlines
Deal found 17/11$2,304
Mon 8/1218:59DEN - SYD
2 stops54h 46mAlaska Airlines
Thu 15/121:40SYD - DEN
2 stops31h 58mAlaska Airlines
Deal found 17/11$2,312
Last-minute flights from Denver to Sydney
Discover last-minute flight deals from Denver to Sydney. Data last updated 20 November 2025 and is based on user searches.
Sun 30/1110:00DEN - SYD
2 stops32h 35mMultiple Airlines
Sun 7/1206:00SYD - DEN
2 stops36h 17mMultiple Airlines
Deal found 20/11$1,635
Wed 3/1217:01DEN - SYD
1 stop20h 24mMultiple Airlines
Sat 6/1211:20SYD - DEN
1 stop23h 21mMultiple Airlines
Deal found 19/11$1,647
Thu 4/1206:00DEN - SYD
2 stops31h 25mMultiple Airlines
Wed 10/1211:20SYD - DEN
2 stops29h 09mMultiple Airlines
Deal found 19/11$1,641
Sat 6/1209:30DEN - SYD
2 stops27h 55mMultiple Airlines
Fri 16/111:20SYD - DEN
1 stop30h 45mMultiple Airlines
Deal found 17/11$1,548
Sun 7/1206:00DEN - SYD
1 stop31h 25mMultiple Airlines
Wed 14/106:00SYD - DEN
2 stops29h 24mMultiple Airlines
Deal found 17/11$1,816
Sun 7/1206:00DEN - SYD
1 stop31h 25mMultiple Airlines
Sun 21/1217:45SYD - DEN
2 stops22h 54mMultiple Airlines
Deal found 19/11$1,817
Sun 7/1206:00DEN - SYD
1 stop31h 25mMultiple Airlines
Sat 17/116:55SYD - DEN
2 stops34h 35mMultiple Airlines
Deal found 17/11$1,825
One-way flights from Denver to Sydney
Search for one-way flight options from Denver to Sydney. Find affordable one-way fares based on user searches. Data last updated 20 November 2025.
Sun 15/207:10DEN - SYD
2 stops35h 25mMultiple Airlines
Deal found 18/11$788
Mon 1/1222:29DEN - SYD
2 stops37h 41mMultiple Airlines
Deal found 19/11$888
Fri 5/1206:00DEN - SYD
1 stop31h 25mMultiple Airlines
Deal found 18/11$905
Sat 6/1206:00DEN - SYD
2 stops31h 25mMultiple Airlines
Deal found 19/11$935
Sun 7/1222:50DEN - SYD
1 stop38h 35mMultiple Airlines
Deal found 19/11$939
Tue 7/406:30DEN - SYD
2 stops34h 30mChina Eastern
Deal found 19/11$1,143
Cheapflights Fare Finder
Customise your flight search to find flights from Denver 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 20 November 2025.
Use the filters below to find and compare flights from Denver to Sydney that are best for you.
Fly from
Denver
Fly to
Sydney
Route
Depart
Return
Price
DenverSydney
DEN - SYD
DENSYD
Denver Intl
Wed 3/12
10:05-19:45
2 stops63h 40m
Sydney Kingsford Smith
Thu 15/1
21:40-11:38
2 stops31h 58m
$2,100
DenverSydney
DEN - SYD
DENSYD
Denver Intl
Wed 3/12
10:05-19:45
2 stops63h 40m
Sydney Kingsford Smith
Sun 18/1
21:40-11:38
2 stops31h 58m
$2,100
DenverSydney
DEN - SYD
DENSYD
Denver Intl
Sat 9/5
21:25-07:00
1 stop41h 35m
Sydney Kingsford Smith
Sun 17/5
10:20-18:18
1 stop23h 58m
$2,117
DenverSydney
DEN - SYD
DENSYD
Denver Intl
Fri 8/5
08:20-19:45
2 stops43h 25m
Sydney Kingsford Smith
Sat 16/5
21:40-12:00
2 stops30h 20m
$2,149
DenverSydney
DEN - SYD
DENSYD
Denver Intl
Fri 8/5
08:20-19:45
2 stops43h 25m
Sydney Kingsford Smith
Tue 19/5
21:40-13:58
2 stops32h 18m
$2,149
DenverSydney
DEN - SYD
DENSYD
Denver Intl
Fri 8/5
12:30-19:45
2 stops39h 15m
Sydney Kingsford Smith
Fri 15/5
21:40-11:34
2 stops29h 54m
$2,149
DenverSydney
DEN - SYD
DENSYD
Denver Intl
Fri 30/1
12:53-09:00
1 stop26h 07m
Sydney Kingsford Smith
Tue 10/2
11:20-18:53
1 stop25h 33m
$2,159
DenverSydney
DEN - SYD
DENSYD
Denver Intl
Fri 8/5
18:25-06:35
2 stops20h 10m
Sydney Kingsford Smith
Mon 18/5
09:25-15:11
2 stops21h 46m
$2,188
DenverSydney
DEN - SYD
DENSYD
Denver Intl
Tue 9/12
12:40-19:45
2 stops37h 05m
Sydney Kingsford Smith
Sun 18/1
21:40-11:38
2 stops31h 58m
$2,231
DenverSydney
DEN - SYD
DENSYD
Denver Intl
Mon 8/12
18:59-19:45
2 stops54h 46m
Sydney Kingsford Smith
Mon 19/1
21:40-12:38
2 stops32h 58m
$2,304
Flights are sorted by cheapest return flights first.
Deals found on 18/11
Showing 1-10 of 20 results
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Best time to book a flight from Denver to Sydney
Have a flexible travel schedule? Discover the best time to fly to Sydney from Denver 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 Denver to Sydney
Prices
More
How far ahead should I book a flight from Denver to Sydney?
Use this chart to determine the optimal time to book a return flight from Denver to Sydney. Price data was last updated on 14 November 2025.
The best time to book flights from Denver to Sydney is 84 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 Denver to Sydney?
Currently, June is the cheapest month in which you can book a flight from Denver to Sydney (average of $1,034). Flying from Denver to Sydney in January is currently the most expensive (average of $1,329). 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 DEN to SYD?
Find hourly flight availability from Denver 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 20 November 2025.
When flying from Denver to Sydney, the time of day you fly usually plays a role in the price. Save by searching for a flight at midday, which can drop the price by up to 32% versus a flight in the evening.
What’s the top stopover airport for flights from Denver to Sydney?
Share of one-stop return flights from Denver to Sydney chosen by Cheapflights users in the past 12 months, using the same stopover each way.
Los Angeles (LAX) – chosen by Cheapflights users on 80% of one-stop itineraries from Denver to Sydney on Cheapflights.
What’s the cheapest stopover airport for flights from Denver to Sydney?
Average return fare for one-stop flights from Denver to Sydney, chosen by Cheapflights users in the past 12 months, with the same stopover each way.
Vancouver (YVR) is the most affordable one-stop option, with an average return flight price of $2,320.
What’s the fastest stopover option from Denver to Sydney?
Shortest average travel time for one-stop one-way flights from Denver to Sydney, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.
Flights via Vancouver (YVR) have the shortest average one-way travel time for one-stop routes: 20h 36m.
Which airport typically offers the quickest stopover for flights from Denver to Sydney?
Average stopover duration for one-stop one-way flights from Denver to Sydney, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Vancouver (YVR) offer the fastest connection on this route, with an average stopover time of 3h 25m.
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 20 November 2025.
See what other customers who have flown with Qantas Airways and American Airlines from Denver to Sydney have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Smooth flight, good onboard staff who were very caring when I didn’t feel very well.
Related info for your journey
Find useful and relevant information for your journey from Denver 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 Denver to Sydney?
Alaska Airlines and United Airlines can get you from Denver to Sydney in just under 41h 35m. Your travel time can differ by up to 22h 05m. There are 13435 km between Denver and Sydney. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.
What are the cheapest airlines flying from Denver to Sydney round-trip?
According to our current data, American Airlines ($308), and Qantas Airways ($1,022) offers the cheapest pricing from Denver to Sydney. American Airlines is 80% cheaper than the average price of flights available within the next 90 days to this destination.
Can I find deals for business class flights from Denver to Sydney?
Yes. Cheapflights offers flight deals from Denver 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 Denver to Sydney?
Currently, June is the cheapest month in which you can book a flight from Denver to Sydney (average of $1,034). Flying from Denver to Sydney in January is currently the most expensive (average of $1,329). 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.
Explore flights to Sydney departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 20 November 2025.
Discover the top 2 airlines that operate flights from Denver 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 647,157 searches. Data last updated 20 November 2025.
Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.
How does Cheapflights help users find flights from Denver to Sydney?
Deals for Denver to Sydney flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.
Why should you use Cheapflights to find cheap flight tickets from Denver to Sydney?
It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Denver to Sydney.
Can Cheapflights find flights from Denver to Sydney with no change fees?
Need flexible booking options for your flight to Sydney from Denver? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.
Can Cheapflights notify me if prices for flights from Denver to Sydney become cheaper?
Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Sydney from Denver today and book when prices fit your budget.
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