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$889+ Cheap flights to Denver

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 28/1. Fares are subject to change and may not be available on all flights or dates of travel.
— DEN
4 Jan — 11 Jan1
1 adult
1 adult, Economy, 0 bags

Flights to Denver in 2025

Enter your travel dates to find the best prices.

Cheapest flights to Denver
Explore the most affordable flight options available to Denver. Find the lowest fares based on data from user searches, with prices last updated on 5 December 2025.

Sun 14/1211:20SYD - DEN
1 stop21h 07mUnited Airlines
Sun 28/1215:55DEN - SYD
1 stop23h 10mUnited Airlines
Deal found 4/12$1,754
Fri 19/1214:00SYD - DEN
2 stops20h 37mUnited Airlines
Fri 2/105:00DEN - SYD
1 stop32h 00mUnited Airlines
Deal found 4/12$1,824
Sat 20/1206:30SYD - DEN
2 stops35h 54mMultiple Airlines
Fri 2/106:00DEN - SYD
2 stops40h 30mMultiple Airlines
Deal found 4/12$2,317
Wed 17/1211:20SYD - DEN
2 stops23h 16mUnited Airlines
Sat 3/121:05DEN - SYD
1 stop39h 55mUnited Airlines
Deal found 4/12$2,361
Mon 8/1212:10SYD - DEN
2 stops38h 10mUnited Airlines
Wed 10/1207:45DEN - SYD
1 stop29h 15mUnited Airlines
Deal found 4/12$2,367
Mon 8/1211:20SYD - DEN
1 stop18h 46mQantas Airways
Wed 10/1218:10DEN - SYD
1 stop20h 50mQantas Airways
Deal found 4/12$2,383
Mon 8/1211:20SYD - DEN
2 stops23h 00mAmerican Airlines
Wed 10/1214:19DEN - SYD
2 stops24h 41mAmerican Airlines
Deal found 4/12$2,397
Fri 19/1211:50SYD - DEN
1 stop20h 39mUnited Airlines
Sat 3/107:47DEN - SYD
1 stop28h 33mUnited Airlines
Deal found 2/12$2,453
Sat 20/1211:50SYD - DEN
1 stop24h 29mUnited Airlines
Sat 3/118:00DEN - SYD
1 stop43h 00mUnited Airlines
Deal found 3/12$2,464
Tue 16/1211:20SYD - DEN
2 stops29h 09mMultiple Airlines
Tue 6/121:45DEN - SYD
2 stops41h 15mMultiple Airlines
Deal found 3/12$2,483

Find flight deals to Denver

Find the latest flights to Denver in 2025, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 647,157 searches and data was last updated on 5 December 2025.

Return from

$1,447

One-way from

$889

Popular in

December

Cheapest in

February

Average price

$2,285
Air New Zealand
  • Air New Zealand
  • 27/4-12/5
  • 4 total stops
  • 49h 30m total
  • Sydney to Denver
Search Deals
28/1
  • 28/1
  • 3 total stops
  • 41h 25m total
  • Sydney to Denver
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($343 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($64 potential savings vs. average return price).
Search Deals
Average for return flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Locate flights to Denver that fit your budget, with regularly updated fares and availability. In the last 7 days, Cheapflights users made a total of 647,157 searches and data was last updated on 5 December 2025.
Use the filters below to find and compare flights to Denver that are best for you.

Fly from

Sydney

Route

Depart

Return

Price

SydneyDenver

SYD - DEN

SYDDEN

Sydney Kingsford Smith

Sun 18/1

14:05-18:13

1 stop22h 08m

Denver Intl

Sun 25/1

19:23-09:00

1 stop19h 37m

$1,624

SydneyDenver

SYD - DEN

SYDDEN

Sydney Kingsford Smith

Sun 26/4

11:55-22:30

2 stops26h 35m

Denver Intl

Mon 11/5

17:30-18:10

2 stops32h 40m

$1,748

SydneyDenver

SYD - DEN

SYDDEN

Sydney Kingsford Smith

Sun 14/12

11:20-14:27

1 stop21h 07m

Denver Intl

Sun 28/12

15:55-09:05

1 stop23h 10m

$1,754

SydneyDenver

SYD - DEN

SYDDEN

Sydney Kingsford Smith

Mon 27/4

09:20-12:38

1 stop19h 18m

Denver Intl

Tue 12/5

15:58-07:20

2 stops23h 22m

$1,818

SydneyDenver

SYD - DEN

SYDDEN

Sydney Kingsford Smith

Fri 19/12

11:20-12:18

1 stop18h 58m

Denver Intl

Fri 2/1

05:00-07:00

1 stop32h 00m

$1,824

SydneyDenver

SYD - DEN

SYDDEN

Sydney Kingsford Smith

Sun 18/1

14:00-10:12

2 stops38h 12m

Denver Intl

Mon 26/1

06:05-07:25

1 stop31h 20m

$1,913

SydneyDenver

SYD - DEN

SYDDEN

Sydney Kingsford Smith

Sat 21/3

10:20-12:28

1 stop19h 08m

Denver Intl

Wed 1/4

16:11-08:20

1 stop23h 09m

$1,961

SydneyDenver

SYD - DEN

SYDDEN

Sydney Kingsford Smith

Sun 26/4

09:10-16:04

1 stop22h 54m

Denver Intl

Mon 11/5

20:19-07:05

1 stop18h 46m

$1,996

SydneyDenver

SYD - DEN

SYDDEN

Sydney Kingsford Smith

Sun 26/4

12:00-15:46

1 stop19h 46m

Denver Intl

Mon 11/5

18:48-07:05

2 stops20h 17m

$2,016

SydneyDenver

SYD - DEN

SYDDEN

Sydney Kingsford Smith

Tue 3/3

11:20-17:44

1 stop24h 24m

Denver Intl

Sat 7/3

20:59-08:35

1 stop41h 36m

$2,022

Flights are sorted by cheapest return flights first.

Deals found on 3/12

Showing 1-10 of 21 results
1
2
3

Best time to book a flight to Denver

Have a flexible travel schedule? Discover the best time to fly to 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 to Denver

When is the best time to book a flight to Denver?

Use this chart to determine the optimal time to book a return flight from Sydney to Denver. Price data was last updated on 28 November 2025.

Booking 46 days in advance of your planned departure date is, on average, the best time to get cheap flights to Denver. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Reviews of airlines servicing Denver

Get insights into the airlines that provide service to Denver. 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 Denver. Reviews last updated 5 December 2025.
Read reviews from past customers who have flown Air New Zealand, Qantas Airways, andUnited Airlines to the United States. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Air New Zealand
8.0
Very Good
544 reviews
Check prices

Comfort

8.0

Overall

8.0

Boarding

8.2

Crew

8.6

Food

7.4

Entertainment

7.5

Reviews

1 / 20
6.0
Good

Annabel,Dec 2025

WRE - AKL

Both my flights from Whangarei to Auckland and Auckland to Vancouver where late by an hour... That created a lot of anxiety that I would make it between flights, and had my husband waiting many hours for me in Vancouver to pick me up. Can there not be another plane on standby for when delays happen. The weather was not stormy, whatever the reason for the delay it happens a lot! Talking to local kiwis. No one is happy about it. The planes are also quite cold. I realise there is a belief that the cold helps one sleep, but that's a myth. It really doesn't. There is a certain warm temperature maybe a touch below body heat that is cosy to sleep. I dressed extra warm, with a t-shit, sweater and feather winter coat, still using the blanket for my legs, to stay warm on the flight back to Vancouver. It was uncomfortable in economy class. Not much room to stretch between two people. Everything else was lovely, the attendants, the food. I wish that there were more signs at the Auckland airport, knowing where to go would have been nice too. When I first landed in Auckland and had to go to domestic, it was my first time after 30 years. I asked someone where do I go? they said follow the line. They didn't say there was a bus, there were no signs saying free bus to and from domestic. It was pouring with rain, my plane again had arrived late from Brisbane, that time, air NZ all the way and I followed the line, hoping it was around the next corner, and the next corner, and the next... arriving soaked! With a few mins to spare to my auckland to whangarei flight. High anxiety that day too. When I went from Vancouver-Auckland-Brisbane. I again was confused with the signs to go international. And walking through the shops, would never have guest that was the way to go. I realise Auckland airport is getting construction done, maybe that will solve the way people go with better signs then. but for now its very confusing. Plus I saw someone purchase maple syrup at customs before their flight, and it was confiscated when they had their carry on bag checked. That doesn't seem right, made not want to purchase anything at customs. If its going to be confiscated. my recharger battery to use on the go to power charge my ipad and phone was confiscated that was over $100, would like my money back. It went from vancouver to brisbane to auckland and whangarei, then whangarei to auckland. but auckland to vancouver my luggage had the lock broken and a note saying they took it. kinda feel violated. Could customs not have called me over and asked me about it, and i could have carried it on in my carryon bag, because it seemed ok when i had it on my carry on, just not my suitcase. I ipad and phone have lithium batteries, didn't seem right. It was for charging when i was up north of newzealand on the beach. taking lots of photos needed it to recharge divices when there was no electricity driving in the car. anyway that was annoying. live and learn.
Air New Zealand
8.0
Very Good
544 reviews
Air New Zealand
8.0
Very Good
544 reviews
Check prices

Comfort

8.0

Overall

8.0

Boarding

8.2

Crew

8.6

Food

7.4

Entertainment

7.5

Reviews

1 / 20
6.0
Good

Annabel,Dec 2025

WRE - AKL

Both my flights from Whangarei to Auckland and Auckland to Vancouver where late by an hour... That created a lot of anxiety that I would make it between flights, and had my husband waiting many hours for me in Vancouver to pick me up. Can there not be another plane on standby for when delays happen. The weather was not stormy, whatever the reason for the delay it happens a lot! Talking to local kiwis. No one is happy about it. The planes are also quite cold. I realise there is a belief that the cold helps one sleep, but that's a myth. It really doesn't. There is a certain warm temperature maybe a touch below body heat that is cosy to sleep. I dressed extra warm, with a t-shit, sweater and feather winter coat, still using the blanket for my legs, to stay warm on the flight back to Vancouver. It was uncomfortable in economy class. Not much room to stretch between two people. Everything else was lovely, the attendants, the food. I wish that there were more signs at the Auckland airport, knowing where to go would have been nice too. When I first landed in Auckland and had to go to domestic, it was my first time after 30 years. I asked someone where do I go? they said follow the line. They didn't say there was a bus, there were no signs saying free bus to and from domestic. It was pouring with rain, my plane again had arrived late from Brisbane, that time, air NZ all the way and I followed the line, hoping it was around the next corner, and the next corner, and the next... arriving soaked! With a few mins to spare to my auckland to whangarei flight. High anxiety that day too. When I went from Vancouver-Auckland-Brisbane. I again was confused with the signs to go international. And walking through the shops, would never have guest that was the way to go. I realise Auckland airport is getting construction done, maybe that will solve the way people go with better signs then. but for now its very confusing. Plus I saw someone purchase maple syrup at customs before their flight, and it was confiscated when they had their carry on bag checked. That doesn't seem right, made not want to purchase anything at customs. If its going to be confiscated. my recharger battery to use on the go to power charge my ipad and phone was confiscated that was over $100, would like my money back. It went from vancouver to brisbane to auckland and whangarei, then whangarei to auckland. but auckland to vancouver my luggage had the lock broken and a note saying they took it. kinda feel violated. Could customs not have called me over and asked me about it, and i could have carried it on in my carryon bag, because it seemed ok when i had it on my carry on, just not my suitcase. I ipad and phone have lithium batteries, didn't seem right. It was for charging when i was up north of newzealand on the beach. taking lots of photos needed it to recharge divices when there was no electricity driving in the car. anyway that was annoying. live and learn.
Qantas Airways
7.5
Good
947 reviews
Air New Zealand
8.0
Very Good
544 reviews
Check prices

Comfort

8.0

Overall

8.0

Boarding

8.2

Crew

8.6

Food

7.4

Entertainment

7.5

Reviews

1 / 20
6.0
Good

Annabel,Dec 2025

WRE - AKL

Both my flights from Whangarei to Auckland and Auckland to Vancouver where late by an hour... That created a lot of anxiety that I would make it between flights, and had my husband waiting many hours for me in Vancouver to pick me up. Can there not be another plane on standby for when delays happen. The weather was not stormy, whatever the reason for the delay it happens a lot! Talking to local kiwis. No one is happy about it. The planes are also quite cold. I realise there is a belief that the cold helps one sleep, but that's a myth. It really doesn't. There is a certain warm temperature maybe a touch below body heat that is cosy to sleep. I dressed extra warm, with a t-shit, sweater and feather winter coat, still using the blanket for my legs, to stay warm on the flight back to Vancouver. It was uncomfortable in economy class. Not much room to stretch between two people. Everything else was lovely, the attendants, the food. I wish that there were more signs at the Auckland airport, knowing where to go would have been nice too. When I first landed in Auckland and had to go to domestic, it was my first time after 30 years. I asked someone where do I go? they said follow the line. They didn't say there was a bus, there were no signs saying free bus to and from domestic. It was pouring with rain, my plane again had arrived late from Brisbane, that time, air NZ all the way and I followed the line, hoping it was around the next corner, and the next corner, and the next... arriving soaked! With a few mins to spare to my auckland to whangarei flight. High anxiety that day too. When I went from Vancouver-Auckland-Brisbane. I again was confused with the signs to go international. And walking through the shops, would never have guest that was the way to go. I realise Auckland airport is getting construction done, maybe that will solve the way people go with better signs then. but for now its very confusing. Plus I saw someone purchase maple syrup at customs before their flight, and it was confiscated when they had their carry on bag checked. That doesn't seem right, made not want to purchase anything at customs. If its going to be confiscated. my recharger battery to use on the go to power charge my ipad and phone was confiscated that was over $100, would like my money back. It went from vancouver to brisbane to auckland and whangarei, then whangarei to auckland. but auckland to vancouver my luggage had the lock broken and a note saying they took it. kinda feel violated. Could customs not have called me over and asked me about it, and i could have carried it on in my carryon bag, because it seemed ok when i had it on my carry on, just not my suitcase. I ipad and phone have lithium batteries, didn't seem right. It was for charging when i was up north of newzealand on the beach. taking lots of photos needed it to recharge divices when there was no electricity driving in the car. anyway that was annoying. live and learn.
United Airlines
7.4
Good
9,066 reviews
Air New Zealand
8.0
Very Good
544 reviews
Check prices

Comfort

8.0

Overall

8.0

Boarding

8.2

Crew

8.6

Food

7.4

Entertainment

7.5

Reviews

1 / 20
6.0
Good

Annabel,Dec 2025

WRE - AKL

Both my flights from Whangarei to Auckland and Auckland to Vancouver where late by an hour... That created a lot of anxiety that I would make it between flights, and had my husband waiting many hours for me in Vancouver to pick me up. Can there not be another plane on standby for when delays happen. The weather was not stormy, whatever the reason for the delay it happens a lot! Talking to local kiwis. No one is happy about it. The planes are also quite cold. I realise there is a belief that the cold helps one sleep, but that's a myth. It really doesn't. There is a certain warm temperature maybe a touch below body heat that is cosy to sleep. I dressed extra warm, with a t-shit, sweater and feather winter coat, still using the blanket for my legs, to stay warm on the flight back to Vancouver. It was uncomfortable in economy class. Not much room to stretch between two people. Everything else was lovely, the attendants, the food. I wish that there were more signs at the Auckland airport, knowing where to go would have been nice too. When I first landed in Auckland and had to go to domestic, it was my first time after 30 years. I asked someone where do I go? they said follow the line. They didn't say there was a bus, there were no signs saying free bus to and from domestic. It was pouring with rain, my plane again had arrived late from Brisbane, that time, air NZ all the way and I followed the line, hoping it was around the next corner, and the next corner, and the next... arriving soaked! With a few mins to spare to my auckland to whangarei flight. High anxiety that day too. When I went from Vancouver-Auckland-Brisbane. I again was confused with the signs to go international. And walking through the shops, would never have guest that was the way to go. I realise Auckland airport is getting construction done, maybe that will solve the way people go with better signs then. but for now its very confusing. Plus I saw someone purchase maple syrup at customs before their flight, and it was confiscated when they had their carry on bag checked. That doesn't seem right, made not want to purchase anything at customs. If its going to be confiscated. my recharger battery to use on the go to power charge my ipad and phone was confiscated that was over $100, would like my money back. It went from vancouver to brisbane to auckland and whangarei, then whangarei to auckland. but auckland to vancouver my luggage had the lock broken and a note saying they took it. kinda feel violated. Could customs not have called me over and asked me about it, and i could have carried it on in my carryon bag, because it seemed ok when i had it on my carry on, just not my suitcase. I ipad and phone have lithium batteries, didn't seem right. It was for charging when i was up north of newzealand on the beach. taking lots of photos needed it to recharge divices when there was no electricity driving in the car. anyway that was annoying. live and learn.
Air Canada
7.1
Good
10,500 reviews
Air New Zealand
8.0
Very Good
544 reviews
Check prices

Comfort

8.0

Overall

8.0

Boarding

8.2

Crew

8.6

Food

7.4

Entertainment

7.5

Reviews

1 / 20
6.0
Good

Annabel,Dec 2025

WRE - AKL

Both my flights from Whangarei to Auckland and Auckland to Vancouver where late by an hour... That created a lot of anxiety that I would make it between flights, and had my husband waiting many hours for me in Vancouver to pick me up. Can there not be another plane on standby for when delays happen. The weather was not stormy, whatever the reason for the delay it happens a lot! Talking to local kiwis. No one is happy about it. The planes are also quite cold. I realise there is a belief that the cold helps one sleep, but that's a myth. It really doesn't. There is a certain warm temperature maybe a touch below body heat that is cosy to sleep. I dressed extra warm, with a t-shit, sweater and feather winter coat, still using the blanket for my legs, to stay warm on the flight back to Vancouver. It was uncomfortable in economy class. Not much room to stretch between two people. Everything else was lovely, the attendants, the food. I wish that there were more signs at the Auckland airport, knowing where to go would have been nice too. When I first landed in Auckland and had to go to domestic, it was my first time after 30 years. I asked someone where do I go? they said follow the line. They didn't say there was a bus, there were no signs saying free bus to and from domestic. It was pouring with rain, my plane again had arrived late from Brisbane, that time, air NZ all the way and I followed the line, hoping it was around the next corner, and the next corner, and the next... arriving soaked! With a few mins to spare to my auckland to whangarei flight. High anxiety that day too. When I went from Vancouver-Auckland-Brisbane. I again was confused with the signs to go international. And walking through the shops, would never have guest that was the way to go. I realise Auckland airport is getting construction done, maybe that will solve the way people go with better signs then. but for now its very confusing. Plus I saw someone purchase maple syrup at customs before their flight, and it was confiscated when they had their carry on bag checked. That doesn't seem right, made not want to purchase anything at customs. If its going to be confiscated. my recharger battery to use on the go to power charge my ipad and phone was confiscated that was over $100, would like my money back. It went from vancouver to brisbane to auckland and whangarei, then whangarei to auckland. but auckland to vancouver my luggage had the lock broken and a note saying they took it. kinda feel violated. Could customs not have called me over and asked me about it, and i could have carried it on in my carryon bag, because it seemed ok when i had it on my carry on, just not my suitcase. I ipad and phone have lithium batteries, didn't seem right. It was for charging when i was up north of newzealand on the beach. taking lots of photos needed it to recharge divices when there was no electricity driving in the car. anyway that was annoying. live and learn.

FAQs about flying to Denver

  • What airport do you fly into for flights to Denver?

    For a flight to Denver, you will be flying into Denver Intl. Denver Intl (DEN) is just 29.7 km from the centre of the city.

  • Can I find cheaper flights to Denver if I am willing to have stopovers?

    Yes, flights with stopovers are often cheaper than direct flights. Keep an eye out for flight deals to Denver on Cheapflights that require 1 or 2 stops for potential cost savings.

  • What is the best airline to fly to Denver?

    Based on reviews from Cheapflights users, Qantas Airways is rated the highest out of the airlines that fly to Denver.

  • What is the cheapest airport to fly to in Denver?

    Denver Intl is currently the cheapest airport to fly to in Denver. One-way flights to Denver Intl typically cost $45, while return flights cost around $259.

  • How much is a return flight to Denver?

    A return flight to Denver will typically cost around $505, however they can be found for as little as $259.

  • Where does the fastest flight to Denver depart from?

    For those looking to save time traveling to Denver, Sydney Kingsford Smith offers the quickest one-way flight (18 hours 8 minutes).

  • Does Denver Intl have car hire?

    Yes. Those touching down at Denver Intl can take advantage of the car hire services offered upon their arrival.

  • Are there hotels close to Denver Intl?

    Yes. Denver Intl has hotels nearby for those requiring accommodations. The Westin Denver International Airport is the closest property to Denver Intl (0.0 km away from Denver Intl).

See more FAQs

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