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 12/2. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SYD
10 Jan — 17 Jan1
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 41 days in advance, depart on a Wednesday or Saturday and return on a Monday
Cheap flight deals from Denver to Sydney
Enter your travel dates to find the best prices.
Cheapest flights from Denver to Sydney
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 11 December 2025.
Mon 29/1206:35DEN - SYD
2 stops30h 50mMultiple Airlines
Thu 22/117:45SYD - DEN
1 stop23h 46mMultiple Airlines
Deal found 9/12$1,706
Sun 28/1222:51DEN - SYD
1 stop38h 34mMultiple Airlines
Fri 16/117:00SYD - DEN
2 stops35h 40mMultiple Airlines
Deal found 9/12$1,925
Sun 28/1222:51DEN - SYD
1 stop38h 34mMultiple Airlines
Thu 22/121:30SYD - DEN
2 stops55h 00mMultiple Airlines
Deal found 9/12$1,939
Sun 28/1222:51DEN - SYD
1 stop38h 34mMultiple Airlines
Wed 21/117:00SYD - DEN
2 stops34h 59mMultiple Airlines
Deal found 9/12$1,942
Sun 28/1222:51DEN - SYD
1 stop38h 34mMultiple Airlines
Tue 20/114:00SYD - DEN
2 stops38h 30mMultiple Airlines
Deal found 9/12$1,964
Mon 29/1206:00DEN - SYD
1 stop31h 25mMultiple Airlines
Fri 16/117:00SYD - DEN
2 stops35h 40mMultiple Airlines
Deal found 9/12$1,981
Mon 29/1206:00DEN - SYD
1 stop31h 25mMultiple Airlines
Wed 21/117:00SYD - DEN
2 stops34h 59mMultiple Airlines
Deal found 9/12$1,997
Mon 29/1206:00DEN - SYD
1 stop31h 25mMultiple Airlines
Tue 20/114:00SYD - DEN
2 stops38h 30mMultiple Airlines
Deal found 9/12$2,018
Fri 26/1206:00DEN - SYD
1 stop31h 25mMultiple Airlines
Thu 22/117:45SYD - DEN
1 stop23h 46mMultiple Airlines
Deal found 9/12$2,041
Sun 28/1222:51DEN - SYD
1 stop38h 34mMultiple Airlines
Mon 19/117:30SYD - DEN
2 stops35h 00mMultiple Airlines
Deal found 9/12$2,057
Tue 30/1219:05DEN - SYD
1 stop20h 30mAir Canada
Mon 19/111:20SYD - DEN
1 stop19h 17mAir Canada
Deal found 9/12$2,088
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 11 December 2025.
Thu 14/511:21DEN - SYD
2 stops27h 59mAir Canada
Tue 26/509:20SYD - DEN
2 stops24h 44mAir Canada
Deal found 10/12$1,499
Tue 3/312:55DEN - SYD
1 stop23h 55mDelta
Mon 6/409:25SYD - DEN
1 stop18h 33mDelta
Deal found 8/12$1,749
Wed 14/117:37DEN - SYD
1 stop21h 28mUnited Airlines
Wed 21/111:50SYD - DEN
1 stop20h 34mUnited Airlines
Deal found 8/12$1,844
Sat 10/117:09DEN - SYD
2 stops32h 36mAlaska Airlines
Sat 24/121:40SYD - DEN
2 stops31h 58mAlaska Airlines
Deal found 8/12$2,167
Wed 4/318:12DEN - SYD
1 stop20h 18mDelta
Mon 6/409:25SYD - DEN
1 stop24h 35mDelta
Deal found 8/12$1,749
Thu 22/115:40DEN - SYD
2 stops22h 50mDelta
Thu 29/110:40SYD - DEN
2 stops26h 49mDelta
Deal found 8/12$1,906
Wed 24/1217:42DEN - SYD
1 stop21h 23mUnited Airlines
Wed 21/114:00SYD - DEN
1 stop22h 23mUnited Airlines
Deal found 9/12$2,501
Wed 24/1215:57DEN - SYD
1 stop20h 23mUnited Airlines
Sun 11/111:20SYD - DEN
1 stop21h 10mUnited Airlines
Deal found 8/12$2,501
Sun 28/1218:25DEN - SYD
1 stop18h 25mDelta
Mon 12/114:15SYD - DEN
1 stop26h 56mDelta
Deal found 8/12$2,501
Tue 30/1218:25DEN - SYD
1 stop20h 05mDelta
Tue 13/110:40SYD - DEN
1 stop25h 30mDelta
Deal found 8/12$2,501
Last-minute flights from Denver to Sydney
Discover last-minute flight deals from Denver to Sydney. Data last updated 11 December 2025 and is based on user searches.
Sat 17/119:05DEN - SYD
2 stops32h 40mAir Canada
Tue 10/211:20SYD - DEN
1 stop23h 10mAir Canada
Deal found 8/12$1,582
Fri 23/119:05DEN - SYD
2 stops25h 35mMultiple Airlines
Mon 2/211:20SYD - DEN
1 stop19h 06mMultiple Airlines
Deal found 8/12$1,522
Fri 23/115:53DEN - SYD
2 stops28h 47mAir Canada
Mon 2/211:20SYD - DEN
1 stop19h 06mAir Canada
Deal found 8/12$1,528
Fri 23/115:53DEN - SYD
2 stops28h 47mAir Canada
Mon 26/119:15SYD - DEN
2 stops35h 22mAir Canada
Deal found 9/12$1,614
Sat 31/121:05DEN - SYD
2 stops42h 30mMultiple Airlines
Sat 14/221:55SYD - DEN
2 stops32h 42mMultiple Airlines
Deal found 9/12$1,492
Sat 31/119:05DEN - SYD
2 stops27h 35mAir Canada
Thu 12/211:20SYD - DEN
1 stop19h 08mAir Canada
Deal found 8/12$1,591
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 11 December 2025.
Thu 12/209:27DEN - SYD
2 stops50h 43mMultiple Airlines
Deal found 10/12$796
Sun 1/322:51DEN - SYD
2 stops40h 59mMultiple Airlines
Deal found 8/12$799
Sun 15/207:10DEN - SYD
1 stop30h 15mMultiple Airlines
Deal found 8/12$872
Mon 29/1206:35DEN - SYD
2 stops30h 50mMultiple Airlines
Deal found 9/12$893
Thu 25/1206:15DEN - SYD
3 stops53h 55mMultiple Airlines
Deal found 9/12$960
Sun 28/1222:51DEN - SYD
1 stop38h 34mMultiple Airlines
Deal found 9/12$976
Tue 30/1206:35DEN - SYD
2 stops30h 50mMultiple Airlines
Deal found 9/12$988
Thu 1/106:35DEN - SYD
2 stops30h 50mMultiple Airlines
Deal found 9/12$1,071
Find 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 11 December 2025.
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 11 December 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
Thu 14/5
11:21-07:20
2 stops27h 59m
Sydney Kingsford Smith
Tue 26/5
09:20-18:04
2 stops24h 44m
$1,499
DenverSydney
DEN - SYD
DENSYD
Denver Intl
Tue 3/3
12:55-06:50
1 stop23h 55m
Sydney Kingsford Smith
Mon 6/4
09:25-11:58
1 stop18h 33m
$1,749
DenverSydney
DEN - SYD
DENSYD
Denver Intl
Wed 4/3
18:12-08:30
1 stop20h 18m
Sydney Kingsford Smith
Mon 6/4
09:25-18:00
1 stop24h 35m
$1,749
DenverSydney
DEN - SYD
DENSYD
Denver Intl
Wed 14/1
17:37-09:05
1 stop21h 28m
Sydney Kingsford Smith
Wed 21/1
11:50-14:24
1 stop20h 34m
$1,844
DenverSydney
DEN - SYD
DENSYD
Denver Intl
Thu 22/1
15:40-08:30
2 stops22h 50m
Sydney Kingsford Smith
Thu 29/1
10:40-19:29
2 stops26h 49m
$1,906
DenverSydney
DEN - SYD
DENSYD
Denver Intl
Sat 10/1
17:09-19:45
2 stops32h 36m
Sydney Kingsford Smith
Sat 24/1
21:40-11:38
2 stops31h 58m
$2,167
DenverSydney
DEN - SYD
DENSYD
Denver Intl
Wed 24/12
17:42-09:05
1 stop21h 23m
Sydney Kingsford Smith
Wed 21/1
14:00-18:23
1 stop22h 23m
$2,501
DenverSydney
DEN - SYD
DENSYD
Denver Intl
Wed 24/12
15:57-06:20
1 stop20h 23m
Sydney Kingsford Smith
Sun 11/1
11:20-14:30
1 stop21h 10m
$2,501
DenverSydney
DEN - SYD
DENSYD
Denver Intl
Sun 28/12
18:25-06:50
1 stop18h 25m
Sydney Kingsford Smith
Mon 12/1
14:15-23:11
1 stop26h 56m
$2,501
DenverSydney
DEN - SYD
DENSYD
Denver Intl
Tue 30/12
18:25-08:30
1 stop20h 05m
Sydney Kingsford Smith
Tue 13/1
10:40-18:10
1 stop25h 30m
$2,501
Flights are sorted by cheapest return flights first.
Deals found on 10/12
Showing 1-10 of 18 results
1
2
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 5 December 2025.
The best time to book flights from Denver to Sydney is 41 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 $1,003). Flying from Denver to Sydney in January is currently the most expensive (average of $1,290). 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 11 December 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 $2,258.
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 11 December 2025.
See what other customers who have flown with Qantas Airways 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?
Air Canada, Delta, and United Airlines can get you from Denver to Sydney in just under 21h 28m. Your travel time can differ by up to 6h 31m. 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 is the cheapest airline to fly from Denver to Sydney round-trip?
According to our current data, Qantas Airways ($995), offers the cheapest pricing from Denver to Sydney. Qantas Airways is 38% 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 $1,003). Flying from Denver to Sydney in January is currently the most expensive (average of $1,290). 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 11 December 2025.
Discover the top airline 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 11 December 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.
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book With Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
We value your privacy
Cheapflights and its partners wish to use cookies or similar technologies to store and/or access information on and about your device and process personal data such as your IP address, device identifiers etc., in order to improve your experience on the site, to analyse navigation, to offer and measure personalised advertising, and to facilitate sharing on social networks. We also allow the use of third-party cookies (including those from our advertising partners) on our sites.
By clicking 'Accept', you consent to your data being processed by 0 vendors on this web site for the purposes described in this notice. You can review the vendors and their individual processing purposes on the .
To review individual processing purposes and cookie categories, please click ’Select individual purposes’. You can review your choices and withdraw your consent at any time by clicking the ’Privacy Preferences’ link in the page side navigation.