$446 Find Cheap Flights from Denver to Australia

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 Australia departing on 9/23. 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

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Cheap Flights from Denver to Australia

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Sydney
Sydney1 stop$910
Melbourne
Melbourne2 stops$951
Brisbane
Brisbane2 stops$895
Perth
Perth2 stops$1,246
Cairns
Cairns2 stops$1,228
Adelaide
Adelaide2 stops$1,163
Coolangatta
Coolangatta2 stops$1,890
Canberra
Canberra2 stops$1,313
Darwin
Darwin3 stops$1,738
Sydney
Sydney1 stop$910
Melbourne
Melbourne2 stops$951
Brisbane
Brisbane2 stops$895
Perth
Perth2 stops$1,246
Cairns
Cairns2 stops$1,228
Adelaide
Adelaide2 stops$1,163
Coolangatta
Coolangatta2 stops$1,890
Canberra
Canberra2 stops$1,313
Darwin
Darwin3 stops$1,738
Booking Insights

KAYAK's insights & trends for Denver to Australia flights

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Denver to Australia, 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 Australia is April, when tickets cost $872 (return) on average. On the other hand, the most expensive months are December and July, when the average cost of round-trip tickets is $1,422 and $1,238 respectively.

What’s the cheapest day of the week to fly from Denver to Australia?

The average price of all round-trip flights from Denver to Australia clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to Australia on a Tuesday and more expensive on a Thursday. On your return trip to Denver, you should consider flying back on a Tuesday, and avoid Fridays for better deals.

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

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 Australia, 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 Australia, you should book around 7 weeks before departure, which saves you about 29% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 13 weeks before departure.

Good to know

Low seasonAugust
Cheapest flight$446
Best time to beat the crowds but there is an average 4% increase in price.
Most popular time to fly with an average 19% increase in price.
Flight from Denver to Sydney

FAQs - booking Australia flights

  • Does Denver Airport have a military lounge?

    Yes. Located airside in Concourse A on Level 4, the USO offers its services and facilities free of charge to active-duty or retired US military personnel and their families. Some amenities of the USO at DEN include refreshments, hot coffee, flight time boards, and comfortable seating.

  • Does the Denver Airport have a hotel?

    Yes. The Westin Denver International Airport Hotel is connected to DEN at the Jeppesen terminal. If your plane is not departing from Jeppesen, you can get a free shuttle from the hotel to a different terminal. Other features of this upscale hotel include a pool, a fitness center, a restaurant and bar, room service, and much more.

  • What documentation do I need in order to fly to Australia?

    To enter Australia, you need a valid passport that has at least one blank page for an entry stamp. You will also need a valid visa and a filled-out Incoming Passenger Card that you have signed. You will receive an Incoming Passenger Card from your airline during your flight to Australia.

  • Can I rent a car in Australia?

    In order to rent a car in Australia, ideally, you should be 25, but usually for an extra fee, you can rent a car if you are between the ages of 21 and 24. You need to have a valid driver's license that you've had for at least a year. You also need to have insurance on the car and you cannot take a rental car on ferries.

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

    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 Australia.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Denver to Australia 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 Australia?

    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 from Denver to Australia with an airline and back with another airline.

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

    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 from Denver to Australia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Australia?

    The cheapest time of day to fly to Australia is generally in the afternoon, when round-trip flights cost $933 on average. Morning departures are around 12% cheaper than evening flights, on average. The most expensive time of day to fly to Australia is generally at night, which is peak travel time and where the average cost of a ticket is $1,292.

Top tips for finding cheap flights to Australia

  • Located on the edge of the Rocky Mountains in Colorado, the Denver International Airport (DEN) serves as a hub for United, Southwest, Frontier, and other airlines. When you book your ticket from Denver to Australia through KAYAK, you will have many choices of airline, airport, layover locations, and prices in order to find the flight that's right for you.
  • Brisbane is in the center of the eastern coast of Australia on the banks of the Brisbane River and on the shores of Moreton Bay in the Coral Sea. You can find flights from Denver to the Brisbane Airport (BNE) on airways such as Qantas, United, Alaska Airlines, American, and Air Canada. Popular layover locations include Vancouver and Los Angeles. You can find flights with two stops on American, Fiji Airways, Air New Zealand, and others.
  • Located in the southeast corner of Australia, Sydney is built around Sydney Harbor, on the shores of the Tasman Sea. Flights on United, American, Delta, and Qantas offer flights with one stop between DEN and the Sydney Kingsford Smith Airport (SYD) These flights often stop in Los Angeles. Delta, Fiji Airways, Air New Zealand, Alaska Airlines, and more offer two-stop flights between Denver and Sydney with many different layover locations.
  • Located on the banks of the Swan River and the shores of the Indian Ocean, Perth is in the southwest corner of Australia. When you fly from Denver to the Perth Airport (PER), you're unlikely to find a flight with fewer than two stops. Air New Zealand and Alaska Airlines, among others, have flights from Denver to Perth that stop in places such as Los Angeles, Hong Kong, Auckland, Brisbane, Singapore, and Fiji .
  • Located southwest of Sydney, Canberra is not only the largest inland city in Australia, but it is also Australia's capital. To find the best prices on a ticket from Denver to the Canberra Airport (CBR), you'll most likely be booking a flight on several airlines with at least three stops. For instance, a flight on Alaska Airlines, Fiji Airways, and Jetstar that stops in Los Angles, Fiji, and Brisbane is a competitively-priced ticket.

Reviews of the top 5 airlines serving from Denver to Australia

 
Need help choosing which airline to fly with from Denver to Australia? 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
DeltaOverall score based on 7985 reviews
7.9Comfort
7.9Entertainment
7.3Food
8.5Crew
8.2Boarding
Airline reviews

Having to up charge for a seat assignment is not good. Delta can do better

8.0 ExcellentJacob, Aug 2025SLC - LWS
Read more Delta reviews

Having to up charge for a seat assignment is not good. Delta can do better

I liked the friendliness of the staff. The cleanliness of all 3 planes.

Was charged for my luggage despite having been on one ticket from an international flight. Too tired to argue after 15 hours on flight. Was charged for rechecking it at JFK airport. Not sure why those off Kenya Airways were required to do that.

De planning was an absolute mess. We were never told that we weren’t at the gate and that we had to go down unstable stairs and then hop on a bus. People were falling, we couldn’t tell who was in charge. Overall terrible communication that ended up leaving a bad impression at the very end of the experience.

My experience on any Delta flight is always overshadowed by the time Delta removed me from a flight for no apparent reason.

Delayed and took off even later than the scheduled delay time

For a 69 year old with health problems I had the worse experience, no wheelchair when I entered a lady told me to sit and wait while a gentleman told me I had to walk to the Delta station, which I did. I had a carry on and a bag, and I was traveling with my service dog, which was on his carrier and the lady charged me for my carry on luggage, beside all the waiting cause of the delay, I had to walk to get my luggage cause no wheelchair showed up, I am so disappointed. I will get in touch with the company. I got home at 3:00 am, not good for my health situation.

Only issue was with seating. The economy fare we purchased did say there was no guarantee the three people in our party would be seated together, and we were not. At the gate, the agent told us more specifically, the fare we purchased meant we would be seated in middle seats only. This should just be made more obvious.

Great experience on Delta. Staff from baggage check to flight attendants were very courteous and professional. My only issue was a personal preference for pretzels instead of the chips and cookies that were offered.

There was no problems, just a little uncomfortable with seats that do not lay back a little

Business class points redemption - good value for points paid, dubious value if out of your own pocket, domestic class business product okay for this length of flight. The flight left and arrived on time, crew were good, aircraft was a bit old and tired, but still miles ahead of their competitors in Virgin and Jetstar.

Airline running better than post Covid, proper boarding process now implemented, some aircraft feeling a bit old and tired, crew fine, online experience better.

Five hour flight instead of four hours due to westerly headwinds which wasn’t the fault of Qantas !

The wifi was out. Otherwise it was great flight. Richard, as CSM, was excellent.

Was bumped to a later flight because of inefficiency on part of the airline.

The Emerits/Qantas flight was cancelled to Wellington. We need a refund. Had to buy another airline ticket. How do we get the refund. Still not in Wellington.

Delayed QF59 flight once again, Qantas doesn't fail in maintaining there delayed departures and arrivals. USB points do not work nor do the power point sockets on the plane, Qantas staff admitted that on the flight. Don't expect to your charge devices. Saving grace, was the ice cream. Bottom line, if you expect to fly to HND and make it on time avoid Qantas and if you're interested in ice cream - visit 7/11.

Pretty excellent. I don’t know what the pilot could have done better with the bumping ( there was a storm) nor what happened to my ears coming down into bendigo. It doesn’t happen coming down into Sydney just the return flight. I wonder why?

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

Airport and crew experience was excellent. We had to queue for the runway - no one’s fault, but it did mean we were 30 minutes late leaving

Impressed with the service despite turbulence because of the weather. Both flights arrived before their scheduled times.

Great experience…left a bit behind schedule but made up fir that in the air and landed 10 minutes early 😁

The seat and leg room was not good. The food and beverage service was good.

For economy, it was very good. Staff was great, they even let some of us change seats for more leg room... Put an empty seat between us which was fantastic for a 12hr flight. Onboard entertainment was excellent, I think over 200 choices of movies/tv/etc The bad was the barely/nonfunctional wifi that cost either $16.99 or 1700 miles (full flight). It was atrocious... Definitely the worst of the last 3 long haul major airlines I was on the last few months.

Electric plugs didn't work. Entertainment system wasn't working

The design of the light switch on the arm rest is ridiculous.

The gate attendant let me walk right by her with a bag too big for the overhead compartment

Overall, it was a good experience. Boarding was good and there was plenty of overhead bin space for everyone’s carryons (even when we boarded toward the end). Only improvement would be to offer trash service more regularly.

David went above and beyond to make our flight the best that it could be

No food service almost missed because of first flight delays

Crew should be nicer and emphatic with customers. Same cookies as the past 20 years. Seat are ok and the plane was clean though it was delayed.

Was not able to watch most shows on the entertainment site. They would not load

As smooth as you can expect. Some issues with boarding because the previous plane took forever to deplane but overall, a good experience.

On Wednesday, July 30 we were in mid flight from Manchester to Charlotte and we turned around because the right engine was malfunctioning. That was the last flight out of Manchester that night. I was rebooked for Thursday, which became a weather event Friday. There were no seats left on the flight from Manchester to Charlotte. Consequently I didn’t leave Manchester until Saturday morning and we flew to Chicago so to say the least my scheduled flight and return to Iowa was three days off and it messed with my business schedule. Consequently cash flow. I would like some sort of acknowledgment of this event.

There is no room, no gluten free options, or any free internet/entertainment. You have to bring your own tablet or smartphone because there are no screens.

Plane was delayed for 6 hours, at first by weather, which is understandable, but was further delayed with NO given reason for 2 1/2 hours more. We had no clue when we were going to depart actually until they opened the ramp. VERY POOR to ZERO COMMUNICATION!!!

Dreadful experience. Our flight was delayed more than 8 hours due to a maintenance issue and the assistance from rebooking was poor. I was travelling with a bad knee and needed assistance waited in one place more than 3 hours before someone came with a wheelchair. The woman next to me was a 91 year old great grandmother who had waited more than 4 hours. There were moments of support from the staff but it appeared as they were going against the direction of management. It was apathy, lack of ownership and dismissive responses with small moments of kindness and understanding typically from grey haired, female, veteran staff..

We had to turn around and head back to Manchester. Problem with a plane engine.

Flight was delayed. Staff at the gate effectively and proactively communicated about the delay.

Very poor delay in dfw was really bad n long

They could care less about you. Just under a 4 hour delay in Seattle, leading into a missed connection in Vancouver, which led to 2 more delays that added up to 3 more hours leaving us to have to sleep on the floor of the Toronto airport cause they don't help you find accomodations and they just book you on the next flight out. Took an additional 14 hours to get home. Always given the brush off to get rid of us. Worst airline ever

All good but I could barely get my arms and legs into the room in front of me. Have never been so cramped before. Plane left the gate on time, taxied very quickly and took off without waiting. Unique. Arrival on time. No problem

Both flights are delayed so I rate the whole experience as mediocre.

I booked my flight months ago, and checked-in online about 12 hours before the flight. I received an email confirmation of check-in. I had no subsequent communication from Air Canada after my original booking. After arriving at the airport three hours before the flight, as instructed, I waited 90 minutes for an agent to appear to check my bag. I was informed that my flight had been canceled many weeks before, and that flight was no longer being run!! I showed a copy of my check-in confirmation, but no explanation could be found. I was placed on standby for the next flight and the connection. Luckily, those flights were not full and I arrived at my destination. I double checked my email, but I received no update about the flight from Air Canada until the day of the flight.

I had a good experience. I liked being informed about the status of my luggage

Very bad service the way back we was on the way for r two days very bad condition and waiting for luggage till now

I was forcefully re-routed to another destination and was delayed a total of 8hours. I have still not received my bags, no one is taking responsibility. The agents at the airport lied to me that I will get to my destination same time as my previous flight where I was forcefully re-routed from.

Flight was delayed by 1.5hrs. Once inside, people had their small handbags on the storage. The crew (male guy) was not helpful in making some space in the storage. Instead, he asked few bags to be checked-in and it was not a great experience. No attempt to help but just followed the things with a straight face. People had their literally small bags and he wouldnt not move from one storage to another even if there was space and would not let us do i as well. Once flight was on, they ran out of Orange juice, really running out of orange juice when the temp were 32.degrees outside. didnt made the sense. Onasking for a extra snack, he made a face as if he was giving me out of his pocket. if the flight was delayed, there could have an attempt to provide something extra incase people did asked.

Our flight was canceled at the last minute. Someone on the flight said the exact same thing happened to her the day before. I will say they helped us book a flight on another airline so that we could still make our vacation with little delay.

We had a very long delay. First the inbound flight took a while, then maintenance, they “fixed it” to then do boarding and leave the gate, and waste a lot of time to have to go back to the gate and eventually deplane. Had to wait for a new aircraft, wait for a gate, and do the whole thing again. Instead of leaving at 9:50am we left until past 1. I could’ve not woken up at 5am, or spend some more time with my family if they gave more grace period of time between flights to give some time in case of any issues. But they have to make all and every dollar possible

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

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