DEN - SYD

$524 Find Cheap Flights from Denver to Sydney - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Denver to Sydney departing on 8/31. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$936
Typical prices: $1,009-$1,469
Multiple Airlines
Wed 9/9Wed 9/23
DEN - SYD • 2 stops
Cheapest one-way
$524
Typical prices: $703-$973
Multiple Airlines
Mon 8/31
DEN - SYD • 3 stops
Nonstop flights
Not available
There are currently no direct flights between Denver and Sydney. You'll need at least 1 connection.
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Top layover airports
Cheapest • Avg $1,139 (round-trip)
Shortest trip • 19h 29m (one-way)
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When to book
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 37% compared to booking last minute.
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When to travel
Cheapest • 13% price drop
Most popular
Good to know
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Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Denver to Sydney (DEN-SYD)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Denver to Sydney that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Denver to Sydney

Wed, Sep 9 - Wed, Sep 23
Multiple Airlines Logo
12:42 pm - 11:50 am
DEN
-
SYD
31h 08m
2 stops
Multiple Airlines Logo
1:15 pm - 11:44 pm
SYD
-
DEN
26h 29m
3 stops
$936Multiple Airlines
Mon, Sep 14 - Mon, Sep 28
Multiple Airlines Logo
1:10 pm - 11:50 am
DEN
-
SYD
30h 40m
2 stops
Multiple Airlines Logo
1:15 pm - 12:46 pm
SYD
-
DEN
39h 31m
3 stops
$949Multiple Airlines
Mon, Oct 26 - Wed, Nov 11
Air New Zealand Logo
9:50 am - 8:05 am
DEN
-
SYD
29h 15m
1 stop
Air New Zealand Logo
11:50 am - 4:12 pm
SYD
-
DEN
22h 22m
2 stops
$1,461Air New Zealand
Sun, Oct 18 - Wed, Oct 28
Air New Zealand Logo
11:45 am - 8:45 am
DEN
-
SYD
28h 00m
2 stops
Air New Zealand Logo
10:20 am - 4:12 pm
SYD
-
DEN
22h 52m
1 stop
$1,461Air New Zealand
Mon, Oct 5 - Tue, Oct 20
Air Canada Logo
7:50 pm - 8:20 am
DEN
-
SYD
19h 30m
1 stop
Air Canada Logo
10:20 am - 4:58 pm
SYD
-
DEN
23h 38m
1 stop
$1,490Air Canada
Wed, Oct 21 - Wed, Nov 4
Air Canada Logo
7:50 pm - 8:20 am
DEN
-
SYD
19h 30m
1 stop
Air Canada Logo
11:20 am - 12:38 pm
SYD
-
DEN
19h 18m
1 stop
$1,490Air Canada
Sun, Sep 20 - Sun, Oct 4
Delta Logo
10:45 am - 6:50 am
DEN
-
SYD
28h 05m
2 stops
Delta Logo
10:15 am - 7:40 pm
SYD
-
DEN
26h 25m
2 stops
$1,600Delta
Fri, Nov 20 - Sun, Dec 6
Delta Logo
7:49 pm - 8:30 am
DEN
-
SYD
18h 41m
1 stop
Delta Logo
10:40 am - 6:54 pm
SYD
-
DEN
26h 14m
1 stop
$1,646Delta
Sat, Jan 23 - Mon, Feb 8
American Airlines Logo
12:53 pm - 9:00 am
DEN
-
SYD
26h 07m
1 stop
American Airlines Logo
11:15 am - 6:53 pm
SYD
-
DEN
25h 38m
1 stop
$1,713American Airlines
Thu, Oct 1 - Sun, Oct 11
American Airlines Logo
10:47 am - 6:55 am
DEN
-
SYD
28h 08m
1 stop
American Airlines Logo
10:10 am - 11:21 am
SYD
-
DEN
18h 11m
1 stop
$1,753American Airlines
Booking Insights

KAYAK's insights & trends for Denver to Sydney flights

Get data-powered insights and trends into flights from Denver to Sydney to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Denver to Sydney?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Denver to Sydney departing in September.

Flight prices are below average for this route right now.

Flights to Sydney from Denver usually cost between $1,110 and $1,802 in September.
The lowest price found in the past 5 days was $936 on Multiple Airlines (Sep 9-Sep 23).

What is the cheapest month to fly from Denver to Sydney?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Denver to Sydney, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Denver to Sydney is April, where tickets cost $1,183 (return) on average. On the other hand, the most expensive months are December and January, where the average cost of round-trip tickets is $1,797 and $1,595 respectively.

How far in advance should I book a flight from Denver to Sydney?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Denver to Sydney, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Denver to Sydney, you should book around 2 weeks before departure, which saves you about 37% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 16 weeks before departure.

Good to know

Low season

April

Cheapest flight

$524
Best time to beat the crowds with an average 14% drop in price.
Most popular time to fly with an average 31% increase in price.
Flight from Denver to Sydney

When to book flights from Denver to Sydney

Are your dates flexible? Find out the best times to travel from Denver to Sydney based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Denver to Sydney

  • Where can I sleep at Sydney Airport?

    Book your stay at Mantra Hotel Sydney Airport, Rydges Sydney Airport, or Ibis Budget Sydney Airport. All three establishments are at the airport, with the first being a short walk from terminals 1 and 2. They offer both day rooms and overnight stays. Rydges Sydney Airport is in the international terminal and offers shuttle services from the domestic terminal. Ibis Budget Sydney Airport is located in the domestic terminal and has a paid shuttle service.

  • What family-friendly facilities are available at Sydney Airport?

    SYD has provided baby care facilities throughout the airport. In terminal 1, there's a nursing lounge with a sink and microwave around the baggage claim area. In terminal 2, the Parents' Rooms can be found both before and after security. If you're traveling with slightly older kids, take them to the children's play areas at SYD. The play areas are around gates 50, 10, and 53. The airport also has a kids' cinema, a kid-friendly place where kids can sit and watch TV shows. The children's cinema is near Gate 33.

  • How do I get to downtown Sydney from Sydney Airport?

    The train is the most efficient way of getting downtown from SYD. You can take the train from both terminals and tickets are available at the train stations. The public bus also serves the airport, Sydney Bus route 400 connects SYD to downtown Sydney. The bus has stops on the arrivals level of terminals 1 and 3. Shuttles are another great option - Redy2Go and Mozio offer door-to-door shuttle services from SYD to downtown and the surrounding areas. You can request these services from the SYD Travel Desk in the arrivals halls. Sheltered taxi lines are available in each terminal and car rental companies have counters in the arrivals halls of both terminals.

  • Is Denver International Airport suitable for disabled passengers?

    DEN offers wheelchair assistance to passengers with limited mobility visiting the airport. This service must be booked through your airline. There are also reserved parking spots, fast-track services, and accessible restrooms available. Barrier-free access is provided in the form of elevators and ramps. Low-vision passengers will find Aira services and deaf passengers have visual paging services and TDD telephones.

  • What is the cheapest flight from Denver to Sydney?

    In the last 5 days, the lowest price for a flight from Denver to Sydney was $524 for a one-way ticket and $936 for a round-trip.

  • Do I need a passport to fly between Denver and Sydney?

    Yes, you'll most likely have to show a valid passport before boarding the plane in Denver and on arrival in Sydney.

  • Which airports will I be using when flying from Denver to Sydney?

    Denver airport is called Denver Intl and the only airport in Sydney is Sydney Kingsford Smith.

  • Which aircraft models fly most regularly from Denver to Sydney?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Denver to Sydney?

    SkyTeam, oneworld, and Star Alliance are the airline alliances operating flights between Denver and Sydney, with SkyTeam being the most commonly used for this route.

  • What is the most popular layover when flying to Sydney from Denver?

    Los Angeles is the most popular layover city among KAYAK users traveling from Denver to Sydney.

  • Which is the best airline for flights from Denver to Sydney, Air New Zealand or Fiji Airways?

    The two airlines most popular with KAYAK users for flights from Denver to Sydney are Air New Zealand and Fiji Airways. With an average price for the route of $1,288 and an overall rating of 8.0, Air New Zealand is the most popular choice. Fiji Airways is also a great choice for the route, with an average price of $772 and an overall rating of 8.0.

  • How does KAYAK find such low prices on flights from Denver to Sydney?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Denver to Sydney.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Denver to Sydney?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Sydney from Denver is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Denver to Sydney?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Sydney with an airline and back to Denver with another airline. Booking your flights between Denver and SYD can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Denver to Sydney?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Sydney from Denver up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Denver to Sydney

  • Denver International Airport (DEN) has a hub and spoke layout with one main terminal and three concourses. You can get around the airport using the walkways or the underground train that runs every 10 minutes.
  • Unwind with a relaxing massage, pedicure, or manicure before your flight at XpresSpa at DEN. XpresSpa offers express spa services taking less than 30 minutes at DEN, and they are available inside security at gate C30 and in the center core.
  • There are no non-stop flights from Denver to Sydney. If you're on a single-layover flight on this route, the most common layover cities are San Francisco and Los Angeles.
  • Around 3,868 kg of carbon is emitted on flights from Denver to Sydney. Fly more sustainably with Delta Airlines - they offer a flight emitting 40% less carbon per passenger on this route.
  • If you need banking services as soon as you land at Sydney Airport (SYD), ANZ Bank runs a full-service branch at the airport that offers banking and currency exchange services. The bank is in the international terminal on level 2 near check-in counter J.

Reviews of the top 5 airlines serving from Denver to Sydney

 
See real verified KAYAK customer reviews for airlines flying from Denver to Sydney. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Denver to Sydney? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
Air New ZealandOverall score based on 657 reviews
8.2Boarding
7.4Entertainment
7.5Food
8.5Crew
7.9Comfort
Airline reviews

Great airline service by the staff. I highly recommend it

10.0 ExcellentManish, Apr 2026
SFO - AKL
Read more Air New Zealand reviews

Great airline service by the staff. I highly recommend it

Needed more leg room. Leg rest and entertainment system box took up a lot of space and I'm not tall. Breakfast was good. Poor quality of the entertainment options.

Aircon set too high so VERY warm and VERY uncomfortable.

Great! Flight was delayed by 30 mins but all was great. Thanks.

Arriving at Coolangatta, rows 20 forward, took the airbridge across to the terminal. It was suggested to those from rows 21 back, that we take the rear stairs and to be careful crossing the tarmac. That was all well and good. However, when we got across to the terminal we then had to climb three large flights of stairs to meet up with those coming across the airbridge. No elevator! There were people carrying babies and elderly carrying hand luggage that needed assistance from others.. There was no option to turn back.

Flew premium economy, well worth the extra. Much better seat size & space. Meals & snacks were lovely. Crew really pleasant. Internet is not great, not really useful for anything. Couldn't even send messages.

Overall, a great experience from food and crew. The only setback was that this was the Second flight from Air New Zealand within a week that was an hour late for boarding.

The air New Zealand employees who assisted us with wheelchair aid on Auckland made our transfer from flight to the next seamless. Also were amazing in helping with our luggage and customs in Brisbane.

Overall good. We had to transfer to Bradly terminal. We had requested wheelchair assistance. The bus that picked us up had to wait for other passengers. The wait was long. Then, at the Bradly terminal we had to wait an extended period of time for the wheel chair assistance. These delays caused tension at checked in and resulted in arriving at the gate as passengers were boarding.

All was good, the only thing was it didn't run on time.

First flight was delayed which resulted in missing our connecting. As a result class was downgraded to economy on a later flight.

Unprepared to rebook a flight of people. Uncommunicative. When I received updates in the app it was well after the announcement in the hold room. Offered a single $12 meal voucher, not enough for a sandwich at DEN, for a 17 hour delay. No one was able to explain their meal or hotel reimbursement policy for this cancellation, just handed a card to call the Help desk. My previous flight went through several delays and was finally cancelled, without explanation. The customer help desk closed while there was a long line. I then waited in line for a gate agent almost an hour while simultaneously on hold and trying to text with a remote Delta agent. Communicating with the text agent was almost impossible; they could not find any flights that got me back to my original city before the following evening. Kept offering itineraries that did not get me back to my origin airport or involved additional layovers. In 50 minutes on hold, never got through to an agent by phone. Finally spoke to one of the gate agents who was able to rebook on a red eye that had only one stop and got me back in the afternoon the next day, rather than late evening. Later by email, Delta offered 10,000 loyalty points for the inconvenience of the cancellation. The crew on the red eye flight were delightful. I don’t remember any food or entertainment on that flight.

I have Precheck. Flew HPN to DEN and return this past weekend. Delta didn't attach my Precheck number to this trip. So it was waiting in general line especially in Denver. Unavailable.

worst flight ever from Delta, it got delayed and kept on delaying..

Terrible. Four hour delay because Delta could not find crew to man the aircraft. Terrible communication. Terrible insight into the delays. One of the worst flight experiences I’ve had.

Mechanic delay in addition to a 2 hour change in takeoff time was frustrating.

Boarding was organised and relaxed. Crew were fantastic! Seats were lacking padding causing butt pain and stiffness.

Flights on time. .Ride was as comfortable as can be expected in steerage. Luggage arrived at destination. Attendants were fairly friendly.

Bathrooms dirty sinks clogged. No one seemed to clean them. Plane very old

First, the flight was schedule to leave at 12:08. Delayed to 12:38. It is 12:58 and I am sitting at the gate. The staff are not communicating with us (just tell me it’s gonna be five hours if that’s the case, quit hufflepuffing around like you’re trying to board us when the plane isn’t even here and you don’t know where your crew are. I’m still waiting for any communication about the further delay. This is a rebooked flight from a cancelled flight yesterday, when the airline failed to fulfill its fiduciary responsibility to hotel and cover transport for overnight cancelations. Asking about the food on the flight? What food?!? Delta doesn’t serve meals unless you pay for them and you really want me to give delta a high rating for passing out processed snacks (fun size!)? Can we be for real. Delta is cementing itself in history as one of the cheap, stingy, outdated, glory days are over airlines, and it shows. I took this flight knowing delta was going to provide below level service but this is beyond burgers!! I can’t believe a multi billion or dollar company looked straight in my eyes yesterday and I told me this wasn’t their fault and there for the extra cost in hotel and hundreds of dollars in Ubers are MY RESPONSIBILITY. The only thing I am at fault for is believing delta is reputable company worthy of my dollars. I’m not even sure I want to be compensated unless it is cash because I would rather die never traveling again than to put money in their pockets.

PREMIUM ECONOMY - excellent !Brilliant new plane. Excellent tv catalogue. Good food. Good communication and service from all friend Australian crew. Good communication from captain. Best travel experience in years.

I couldn't hear all of the announcements. It was nice when they put them on the screen.

Loved the staff. The economy seats could have been bigger.

The food was terrible. And the flight attendants were very rude. One flight attendant wouldn’t help a passenger lift their carry-on. Another flight attendant wouldn’t give a man an extra blanket. And they walked by not even looking at the passengers to see if they needed a glass of water.

Delayed and missed connection, was not re-booked like other travelers so ended up being stuck for several hours due to no one handling my booking.

same as previous comments. i hate being on a plane that long. no problems w/anything else.

Much better than I expected for such a long flight.

Good - better than other airlines in terms of food and seat comfort.

Experience was great. My only advice is to have a pasta dish on the menu. Otherwise everything was excellent.

Flight LA to Sydney was first moved earlier by 2 hrs from 10:25 pm to 8:25pm roughly a week before departure. Then on actual departure date, it was delayed 2x, and needed up leaving close to 10 pm. Then entertainment for the whole flight wasn’t working for most of the seats including ours. The baby crib at the middle isle was being taped to the wall to keep it tacked in using a packing tape while passengers were walking by looking for their seats. Not projecting good confidence. After a few minutes after take off the whole crib fell off. Good the people seating next to it wast hit or got scared. At arrival at Sydney, crew handed the customs forms as we were getting out of the plane. So passengers had to scramble to find a place to fill up the forms along the corridor going to immigration. So no one is available to help from Qantas to fill up the entry forms. Not a very good experience for a flagship carrier.

The seats were very uncomfortable. I paid for the front economy. i swear they added a row of seats in there. It was so tight, that I could measure the distance between my seat and the one in front from my elbow to the tips of my fingers plus six inches. The seat cushion was completely worn out. The dinner was very good. Thank you for having a vegetarian option as a standard. But breakfast was nothing but sugar. that's not food. The crew was crabby and rude, especially in regards to coming to the back gallery. And the entertainment choice: why would you put violent movies on the choice? the Godfather? Some movies with black women being beaten over the head with clubs? What the heck? You know that when there is a movie on a plane, everyone gets to watch it. Why choose the most violent titles possible? The total number of movies were very limited, and the television, even more so. No games were available on the set. The wellness section was nice, thank you. I appreciated a galley in the middle where I could stand. The seats were unbearable.

Easy of boarding, helpfully staff at check in, surprisingly comfortable seating

My flight time was changed without any notification to me which ruined my time sensitive plans so I ended up completely changing my travel plans and no reimbursement.

Terrible. Our first time back on United for 10 years, the seats in Polaris class are small and uncomfortable. They have squished too many people in to get more $$$. The staff are not friendly and not wanting to accommodate. I asked for two salads rather than a main meal and was advised no we wont do that. Then asked what I would like for breakfast and given something else anyway. I will not be flying United International anytime soon.

Food should be changed in menu Many muslims travels in this airlime they need to add one Halal meal

Smooth flight. As always dinner could have been more generous. Breakfast was great.

Moody attendants that can barely look up at the passengers. I’m all for people having an off day, but you can tell some Untied Airlines Employees have lost their zeal for their jobs

Great checkin experience and flight crew were very friendly and helpful

Staff did not care, and very clearly did not want to be serving passengers. Requests were ignored repeatedly. Toilets filthy. Bins were just trash bags hung around the place that were never emptied. It was a challenge to even get a glass of water on a 14 hour flight.

Got automatically assigned a middle seat, unless I fork out extra money for seat assigment.

Multiple delays and flight cancellations meant that I arrived five and a half hours late at my destination. There was limited communication from the airline. The airline left my checked bag at my departure city and stopped tracking it almost immediately. The airline has made no apparent effort to return my bag despite filing a report, and has provided no communication or ability to check on the status of the bag.

Food options were ok but the actual meal was terrible. On my way back, they simply said that there was no vegetarian option; somehow they struggled to get one meal and did not give me any breakfast at all which in my opinion was terrible. Never had such an experience in the recent years.

Not enough electronic outlets for charging in the Air Canada waiting to board area but the Most important thing….the plane was booked to only 40% capacity and my row of 2 other seats were empty. My row happened to be one of the few rows that did NOT have raising arm rests. The flight attendant made effort to seat me in a different row. I needed wheelchair assistance due to a cyst on my knee and struggled to move from seat to seat to get to the row. Those 2 empty seats tormented me the entire 15+ hour flight as I had to be upright the entire flight and was not able to elevate my knee. Lots of other passengers were laying down due to the arm rest being able to retract. It is a shame that he couldn’t be gracious and find a row that I could move to.

Terrible. My brother broke his leg and couldn’t board the flight and air Canada couldn’t do anything about rescheduling his flight. Poor customer service and help all around

I Teall staff was great and helpful and communicated needs and special care for my granddaughters and family as well as others. Well done

Terrible experience! All flights delayed, staff had no idea of what they were doing, and at the end luggage lost for 2 days!

Flight delayed 3 times and also delayed again and by the time I reached Sydney, I couldn't get my Virgin Air as my flight was delayed and I was asked to contact here and there and asked to go to this and that terminal and was told there's no other flight as flights are all full to Melbourne. Thank God, at the very last minute, I was put into Qantas and didn't arrive till 7.30 pm in Melbourne instead of 2 pm. Will never use Air Canada again. Besides, the sittings is so tight and can hardly stretch a bit and eat without elbowing my side passengers. It was indeed a very uncomfortable flight.

Crew helped to find more comfortable seats for passengers. We never got tea or coffee on this trip even when we asked. Not even with breakfast.

I could feel the knees of the person behind me in my lower back for 15 1/2 hours. The. Seats were small and space was tight. People were nice. Coffee in the morning was in a small cup and half full and they never came around again.

THEY LOST MY BAGS. I WILL NOT GET THEM BACK FOR 2 WEEKS. everything was delayed. boarding, take off, everything. it was horrible. i am now without luggage for 2 weeks and they have offered me 0 compensation or help. i will NEVER fly air canada again and i suggest you don’t either <3

Everything you need to know for your flight from Denver to Sydney

Information on your arrival and departure airports