DEN - SYD

$563 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 9/11. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Sydney

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Denver to Sydney.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Denver to Sydney.
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Everything you should know

Cheapest round-trip
$1,183
Typical prices: $1,502-$905
Multiple Airlines
Tue 7/21Tue 8/25
DEN - SYD • 2 stops
Cheapest one-way
$563
Typical prices: $576-$823
Multiple Airlines
Fri 9/11
DEN - SYD • 2 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 $1,269 (round-trip)
Shortest trip • 19h 45m (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 25% compared to booking last minute.
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When to travel
Cheapest • 19% price drop
Most popular
Good to know
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

Tue, Jul 21 - Tue, Aug 25
Multiple Airlines Logo
7:25 am - 11:50 am
DEN
-
SYD
36h 25m
2 stops
Multiple Airlines Logo
1:15 pm - 3:58 am
SYD
-
DEN
30h 43m
3 stops
$1,183Multiple Airlines
Sat, Aug 15 - Sun, Aug 23
Multiple Airlines Logo
7:00 am - 7:30 am
DEN
-
SYD
32h 30m
1 stop
Multiple Airlines Logo
5:50 pm - 10:02 am
SYD
-
DEN
32h 12m
1 stop
$1,184Multiple Airlines
Thu, Oct 22 - Thu, Nov 5
Multiple Airlines Logo
12:17 pm - 7:30 am
DEN
-
SYD
26h 13m
1 stop
Multiple Airlines Logo
11:15 am - 12:25 am
SYD
-
DEN
31h 10m
1 stop
$1,192Multiple Airlines
Tue, Aug 4 - Wed, Aug 19
Multiple Airlines Logo
10:39 pm - 7:30 am
DEN
-
SYD
40h 51m
1 stop
Multiple Airlines Logo
5:50 pm - 10:02 am
SYD
-
DEN
32h 12m
1 stop
$1,199Multiple Airlines
Thu, Aug 6 - Wed, Aug 19
Multiple Airlines Logo
10:39 pm - 10:30 am
DEN
-
SYD
43h 51m
2 stops
Multiple Airlines Logo
5:50 pm - 10:02 am
SYD
-
DEN
32h 12m
1 stop
$1,202Multiple Airlines
Mon, Aug 3 - Wed, Aug 19
Multiple Airlines Logo
4:20 pm - 7:30 am
DEN
-
SYD
23h 10m
1 stop
Multiple Airlines Logo
5:50 pm - 10:02 am
SYD
-
DEN
32h 12m
1 stop
$1,203Multiple Airlines
Thu, Oct 22 - Thu, Nov 5
Multiple Airlines Logo
10:29 pm - 9:45 am
DEN
-
SYD
42h 16m
2 stops
Multiple Airlines Logo
11:15 am - 2:37 pm
SYD
-
DEN
21h 22m
1 stop
$1,207Multiple Airlines
Mon, Oct 5 - Mon, Oct 19
Multiple Airlines Logo
10:29 pm - 7:30 am
DEN
-
SYD
40h 01m
1 stop
Multiple Airlines Logo
6:50 pm - 9:40 am
SYD
-
DEN
31h 50m
1 stop
$1,210Multiple Airlines
Tue, Aug 4 - Tue, Aug 18
Multiple Airlines Logo
10:39 pm - 7:30 am
DEN
-
SYD
40h 51m
1 stop
Multiple Airlines Logo
5:50 pm - 10:02 am
SYD
-
DEN
32h 12m
1 stop
$1,218Multiple Airlines
Fri, Aug 7 - Wed, Aug 19
Multiple Airlines Logo
4:20 pm - 10:30 am
DEN
-
SYD
26h 10m
2 stops
Multiple Airlines Logo
5:50 pm - 10:02 am
SYD
-
DEN
32h 12m
1 stop
$1,221Multiple 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 July.

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 September, where tickets cost $1,071 (return) on average. On the other hand, the most expensive months are December and January, where the average cost of round-trip tickets is $1,791 and $1,545 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 25% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 22 weeks before departure.

Good to know

Low seasonApril
Cheapest flight$563
Best time to beat the crowds with an average 11% drop in price.
Most popular time to fly with an average 35% 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 $563 for a one-way ticket and $1,183 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, Fiji Airways or Air New Zealand?

    The two airlines most popular with KAYAK users for flights from Denver to Sydney are Fiji Airways and Air New Zealand. With an average price for the route of $836 and an overall rating of 8.1, Fiji Airways is the most popular choice. Air New Zealand is also a great choice for the route, with an average price of $1,295 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.
7.9
DeltaOverall score based on 8397 reviews
7.8Comfort
8.1Boarding
7.2Food
7.8Entertainment
8.5Crew
Airline reviews

Original flight was delayed, then cancelled and the gate staff did not expedite rebooking. Also, no instructions were given that a ticket number was needed before being called to facilitate rebooking. This could have been much more organized.

2.0 MediocreBen, Jun 2026
ATL - HSV
Read more Delta reviews

Original flight was delayed, then cancelled and the gate staff did not expedite rebooking. Also, no instructions were given that a ticket number was needed before being called to facilitate rebooking. This could have been much more organized.

Be on time? When not on time a circling for over an hour offer more than 1 bag of chips to the passengers? It was a 7 hour flight by the time we got done.

Five hour delays every hour, I wish it were all at once

Flight delayed four separate times. I’m now one hour hours late to landing.

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

Should never have had to go to Detroit from Orlando back to Tennessee!

Got rerouted from a straight flight from Orlando to Atlanta to Knoxville to a flight from Orlando to Detroit to Knoxville! Seriously!! Flight delay out of Detroit! Long day for what should have been a pretty easy travel day!

Two delays on two separate planes with parts they could not easily find and replace.

Checkin was good, fllight ws good. Onlly complaint is lack of foot on 6 hour flight from Seattle to Boston. Snacks were flimsy - chips and cookies. could have offered something more substantial for such a long flight. I know you can buy food in airport but for the price you pay for a ticket, they should step up for the passengers.

Only beverages were offered to first class and I thought the flight attendant could have also served the Delta Comfort as well instead of sitting down and staring at her phone and walking past all of us to the back of the plane to charge her phone more. There was a complete lack of turbulence and was safe enough for flights attendant to walk around in the front of the plane, collect trash and serve a few people water and turn off the seat belt light. Also didn’t enforce people putting their seats into the upright position and allowed two passengers to remain reclined during landing. They seemed out to lunch completely. Usually my experience on Delta is much better.

Boarding was effortless, the food was outstanding, the seats in Premium Economy were extremely comfortable, and the staff and crew were excellent.

I never flew with alliance. Kayak is a joke and none of the flights or times were correct. Won’t ever use kayak again

I missed my flight due to unforeseen circumstances It was, however , an excellent price !

We had a medical emergency, needing to get to an emergency room upon landing at LAX. I let the back flight attendants know the situation. One, David, contacted the pilot, who made arrangements for EMT's to be there when we got off the plane. They went above and beyond for us. We didn't have to go through customs, as a customs person came to us and checked us right at the exit of the jet way. Another wonderful woman, a United employee at LAX, perhaps a customer service liaison, took care of our luggage situation, as we weren't going to make our connection to Bozeman. When we came back to LAX to see when we could get a flight to Bozeman, the personnel are very accommodating and booked us on the next flight out, and assigned good seats. It was a horrible flight, physically, from Sydney to LAX, , but the professionalism of all involved was excellent! We are very grateful fir the way they all stepped in and helped during a very unpleasant medical situation. Thank you!!

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.

Very good overall. However, your choices of free movies was limited and there was no music Channel???

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

This was the worst flight I’ve been on. Getting on the plane where is was 30 degrees outside was hotter on board cabin must’ve been 33 degrees. This is a health hazard. They cannot be doing this to save on fuel. People could die from this!!. Fans and a/c was, off entertainment was off. Poor excuse given. Crew made the excuse that the system didn’t have enough power. They basically were operating on one engine to save on jet fuel till 3 hours later on cruising altitude and they then started the second engine. And finally the cabin was cooled. On a 7hour red eye flight this made it so uncomfortable and impossible to sleep.

I liked boarding the plane. The staff were rude, the food was appalling and the chairs the most uncomfortable I have ever experienced

an hour late, then had to disembark on back stairs and take 4 flights up to get to main airport. No warning, and difficulty for those with canes and poor knees.

The entertainment they offer could use some games, and maybe they could add some cookies to the snack menu. And the automated messages are a bit repetitive. But it was comfortable temperature wise and the seats were comfortable. The crew is very polite and helpful

This planes staff was top tier. Everything went great and had a great flight home.

Destroyed my suitcase. Tired of talking about it. Cancelling my unite mileage plus account.

New plane was lovely. Crew customer service is always lax but expected. Kraft on time and arrived safely.

It was a short flight so I was expecting too much

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

Had a one hour delay due to mechanical issue. I didn’t think I’d be able to make my connecting flight, but they waited for me and greeted me when I arrived to help things run smooth.

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.

O’hsre taxi and deboarding took 40 minutes. Needed 20 minutes extra time between connecting flights to avoid running through terminal.

Was great in general, try to respect time and excuses when slight changes have been made, appreciated!

Awfully rude American worker at door when we started boarding flight. Then, walk into a blazing hot airplane with no air conditioning until twenty minutes into the flight. Free entertainment was non existent! My husband, along with the fellow passenger in our row, and I could not get entertainment to work, no WIFI! Really?? Been flying American a long time. Was very disappointed.

Flight was delayed by 6 hours... the level of incompetence was truly astounding. I won't be flying American Airlines again. I don't care if AA is direct and there is a layover with another airline, I'll take the layover.

Leave on time. We waited on the plane for hour hours and it was hot and smelly

Two hours delay, probably one hour because they didn’t bring catering and they had to bring water in board. There a change of aircraft. But delays galore at CLT so it must be a CLT and/or AA operation issue. The 1 hr additional delays because nobody could bring 2 packs of water sooner is probably the best example of this airline operates

Flight was delayed 5 hours. Initial reason for delay was 'maintenance' - which makes sense. Then, the additional 2 hours continued to say it was maintenance - when I know EWR had a 2 hour delay. AA did not say that. Additionally, when boarding, there was only one agent at the counter for a long time - until another came to help. After boarding, we had to wait another 45 minutes due to 'no catering'. So while we waited for catering, AA continued to board additional passengers - which seemed odd - and raised questions about what really was going on. I sat in First Class. During the flight, the flight crew allowed a significant number of non-First Class passengers to use the front bathroom - which created a very crowded environment in First Class which was uncomfortable. This also delayed First Class passengers from using the bathroom. Overall, horrible experience.

The Charleston, WV airport was cute. Very good staff and small enough to feel comfortable. The plane had more leg room than bigger planes. Much more comfortable.

Another uncoordinated American experience. Always surprises me at DFW for them of all places. Have to take this flight as there are no other good time options. We knew from the start that something was wrong, but the pilot wouldn't tell us. I just watched my Kayak app grow the delay by 10 minutes as it went to 3.5 hours. They were uncoordinated with maintenance (as maintenance, when finally arriving, knew within 15 minutes the plane wasn't going. No 'sorry' or 'this is what is going on' comment. The pilot seemed unfazed / didn't care about the process we were going through.

The seats. The seat in front of me was awful and when the guy sat down, it flew back and hit my head when I was putting my backpack under the seat, It didn't make for a pleasant experience,

Luggage did not make it onto my plane. Business seats were economy with empty row seat. Just horrible experience. Why would the company allow for transfers that don’t give employees enough time to transfer luggages??

I’ve got 31F seat and window seat . My 2 co passengers was AA crew members and they were very rude attitude and when I was going to use bathroom their gestures was very different and awkward and the guy beside me completely occupied the hand rest and I was really uncomfortable

Flight was overbooked and seats assigned to multiple passengers. Delay 1 hour to sort out.

Good but I don’t received my bags yet is been 5days still no update

It was pretty straight forward, no glitches or hidden costs

It was a short flight so, everything went smoothly and we got to where we needed to be safely.

Didn’t make it on the flight. Delayed then had to be rebooked, which in turn had me waiting at the airport for another 8 hours before next flight

No TV on the flight. The charging outlet was not working. No food, even a sandwich. The served orange was poor quality.

Selected seats 5 months prior to date. Had email confirmation and seats were not honoured. Family did not sit together

Loved and was pleasantly surprised by the food!! Request Lufthansa to help transiting passengers at Munich (confusion whether to go thru passport control or not).

The flight was comfortable and the staff were helpful and friendly. However, we did not know we were flying PAL until we arrived in Canada, so it was a bit disconcerting. In addition, which port we were leaving from was confusing.

My original booking was through AirCanada and unbeknownst to me they altered flights and providers which caused a complete disaster for checking in for my flights and seat assignments. The original gate agent in Auckland had me basically doing gymnastics to get onto the future flights and have my luggage follow me.

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

Information on your arrival and departure airports