Which airlines fly to Denver?

When flying to Denver from Australia, momondo travellers will most often fly with one of these popular airlines: Qantas Airways, Air Canada, United Airlines or Air New Zealand. Depending on what airport in Australia you fly from, you may be able to find flights with any of these popular airlines.

Air New Zealand Flights to Denver

Air New Zealand is a popular choice for users travelling to Denver. It operates 74 flights every week to Denver, most often flying from Houston George Bush Intcntl. Air New Zealand ticket prices will depend on when and where you need to fly from - deals as low as $1,290 (from Adelaide) have been found by momondo users. In 505 reviews, momondo users have rated Air New Zealand at an average score of 8.0/10.

Qantas Airways Flights to Denver

Qantas Airways (7.5/10, 907 reviews) is also a popular choice for flights to Denver, with deals from as low as $972 from Adelaide, return. With 19 Qantas Airways flights to Denver on average each week, prices can vary significantly by origin and availability.

How long does it take to fly to Denver?

The flight from Australia to Denver depends on which airports you’re departing from and arriving to, and whether or not you have a layover. If you fly from Sydney Kingsford Smith (a popular airport in Australia) to Denver Intl (the most popular airport in Denver), then the flight time is 18h 43m on average. If you fly from Melbourne (another popular airport in Australia) to Denver Intl, then the average flight time is 21h 54m.

$708 Cheap Flights to Denver in 2025/26

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Find the cheapest flights from Australia to Denver

Round-trip

One-way

Last minute

Cheap return flights

14:15 - 00:57SYD-DEN

27h 42m2 stops

06:30 - 12:30DEN-SYD

36h 00m2 stops

$1,135Multiple Airlines

Find Deal

Fri, 31 Oct - Fri, 7 Nov

11:05 - 19:00SYD-DEN

24h 55m1 stop

06:30 - 09:15DEN-SYD

56h 45m2 stops

$1,418Multiple Airlines

Find Deal

Fri, 31 Oct - Fri, 7 Nov

09:55 - 17:56SYD-DEN

26h 01m2 stops

16:05 - 08:45DEN-SYD

22h 40m2 stops

$1,518Air New Zealand

Find Deal

Wed, 5 Nov - Fri, 14 Nov

08:20 - 21:55BNE-DEN

29h 35m2 stops

06:00 - 07:00DEN-BNE

32h 00m2 stops

$1,536Air New Zealand

Find Deal

Fri, 31 Oct - Fri, 7 Nov

08:10 - 12:33MEL-DEN

22h 23m2 stops

19:05 - 14:15DEN-MEL

26h 10m2 stops

$1,566Air Canada

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Tue, 3 Mar - Wed, 11 Mar

08:00 - 12:38SYD-DEN

21h 38m2 stops

08:40 - 08:35DEN-SYD

30h 55m1 stop

$1,599Air Canada

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Thu, 9 Oct - Sat, 25 Oct

08:40 - 11:49BNE-DEN

19h 09m1 stop

14:49 - 06:30DEN-BNE

22h 41m1 stop

$1,707Qantas Airways

Find Deal

Fri, 31 Oct - Fri, 7 Nov

11:30 - 14:34MEL-DEN

21h 04m1 stop

17:33 - 09:30DEN-MEL

21h 57m1 stop

$1,722United Airlines

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Fri, 20 Feb - Fri, 27 Feb

08:50 - 15:53BNE-DEN

23h 03m2 stops

14:49 - 06:30DEN-BNE

22h 41m1 stop

$1,763Qantas Airways

Find Deal

Fri, 31 Oct - Fri, 7 Nov

11:30 - 14:29MEL-DEN

20h 59m1 stop

13:35 - 10:00DEN-MEL

26h 25m1 stop

$1,961United Airlines

Find Deal

Wed, 24 Dec - Mon, 19 Jan

Fly from

Route

Depart

Return

Price

SydneyDenver

SYD - DEN

SYDDEN

Sydney Kingsford Smith

Fri 31/10

14:15-00:57

2 stops27h 42m

Denver Intl

Fri 7/11

06:30-12:30

2 stops36h 00m

$1,135

SydneyDenver

SYD - DEN

SYDDEN

Sydney Kingsford Smith

Fri 31/10

11:05-19:00

1 stop24h 55m

Denver Intl

Fri 7/11

06:30-09:15

2 stops56h 45m

$1,418

SydneyDenver

SYD - DEN

SYDDEN

Sydney Kingsford Smith

Wed 5/11

09:55-17:56

2 stops26h 01m

Denver Intl

Fri 14/11

16:05-08:45

2 stops22h 40m

$1,518

BrisbaneDenver

BNE - DEN

BNEDEN

Brisbane

Fri 31/10

08:20-21:55

2 stops29h 35m

Denver Intl

Fri 7/11

06:00-07:00

2 stops32h 00m

$1,536

MelbourneDenver

MEL - DEN

MELDEN

Melbourne

Tue 3/3

08:10-12:33

2 stops22h 23m

Denver Intl

Wed 11/3

19:05-14:15

2 stops26h 10m

$1,566

SydneyDenver

SYD - DEN

SYDDEN

Sydney Kingsford Smith

Thu 9/10

08:00-12:38

2 stops21h 38m

Denver Intl

Sat 25/10

08:40-08:35

1 stop30h 55m

$1,599

BrisbaneDenver

BNE - DEN

BNEDEN

Brisbane

Fri 31/10

08:40-11:49

1 stop19h 09m

Denver Intl

Fri 7/11

14:49-06:30

1 stop22h 41m

$1,707

MelbourneDenver

MEL - DEN

MELDEN

Melbourne

Fri 20/2

11:30-14:34

1 stop21h 04m

Denver Intl

Fri 27/2

17:33-09:30

1 stop21h 57m

$1,722

BrisbaneDenver

BNE - DEN

BNEDEN

Brisbane

Fri 31/10

08:50-15:53

2 stops23h 03m

Denver Intl

Fri 7/11

14:49-06:30

1 stop22h 41m

$1,763

MelbourneDenver

MEL - DEN

MELDEN

Melbourne

Wed 24/12

11:30-14:29

1 stop20h 59m

Denver Intl

Mon 19/1

13:35-10:00

1 stop26h 25m

$1,961

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

Denver flights insights and trends

Explore insights for your Denver flight to craft the best travel plan

Prices

Other information

What is the cheapest month to fly to Denver?

In general, February is the cheapest month to fly from Australia to Denver. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $1,099. If you aren’t able to travel during the month of February, then book flights to Denver from Australia during March instead. Flights to Denver in March, while not as cheap as those in February, still average around $1,162.

What is the cheapest day to depart on your flight to Denver?

According to our data, Monday is the cheapest day to fly to Denver from Australia. The lowest ticket price found for a Monday departure recently was $1,775. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from Australia to Denver for around $2,364.

What is the cheapest time of day to depart on your flight to Denver?

According to our data, the cheapest time of day to fly to Denver is at midday. momondo users have found flights departing from Australia to Denver at midday for as low as $1,676. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In contrast, the most expensive time of day to depart to Denver is in the morning when prices are around $1,993.

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

You are more likely to see cheaper flights to Denver from Australia when booking weeks ahead of your departure date. In general, you can expect to find flights to Denver for around $1,605 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Denver from Australia for as low as $1,370 on momondo.

Cheapest flights to Denver Intl

Find the cheapest flights to Denver Intl from your nearest city or airport

Find flights from Sydney to Denver

CHEAPEST MONTH TO FLY TO DENVER FROM SYDNEY	February	32% cheaper	Flying from Sydney to Denver costs on average just $1,099 in February
MOST EXPENSIVE MONTH TO FLY TO DENVER FROM SYDNEY	December	49% more expensive	It costs about $2,403 for flights to Denver from Sydney in December
MOST POPULAR MONTH TO FLY TO DENVER FROM SYDNEY	December	704% more users visited	More momondo users searched in flights to Denver from Sydney in December than any other month

Cheap Denver flight deals and tips

Summary info about Denver flight prices, duration and airlines

Best One-Way Price	$708
Best Round-Trip Price	$1,135
Fastest flight time	21h 23m
Popular in	December

The best one-way flight price to Denver from Australia in the last 72 hours is $708 (Melbourne to Denver Intl).

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The best round-trip flight price to Denver from Australia in the last 72 hours is $1,135 (Sydney Kingsford Smith to Denver Intl).

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The fastest flight to Denver from Australia takes 21h 23m (Sydney Kingsford Smith to Denver Intl).

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December has the highest demand for flights to Denver, with a 9% price increase on average.

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Frequently asked questions about flying to Denver

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

The ideal time to book your flight to Denver is 46 days in advance, when prices tend to average $1,605. In the past 72 hours, momondo users found flights from Australia to Denver for as low as $699.

Is there an alternative airport near Denver?

Denver Rocky Mountain Metropolitan Airport, Denver Arapahoe Co Airport, Loveland Northern Colorado Airport, Colorado Springs Airport or Cheyenne Airport can be an alternative airport used for travel to Denver.

When did momondo last update prices for flights to Denver Intl Airport?

Prices for flights to Denver Intl Airport refresh daily.

How many operators does momondo search for flights to Denver Intl Airport?

The number of operators available for flights to Denver Intl Airport is 10 as of September 2025.

How old do you have to be to fly to Denver Intl Airport?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and stopovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel to Denver Intl Airport.

What documentation or ID do you need to fly to Denver Intl Airport?

The necessary travel and health documents for your Denver Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's licence and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

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Why should I use momondo to find a flight deal to Denver?

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Can I find flights to Denver with flexible booking policies on momondo?

momondo does allow users to show only those flights to Denver which offer a flexible booking policy as well as other useful filters and features.

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Once you have performed a search for flights to Denver, momondo helps you find the right flight by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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If you are not ready to book a flight to Denver now, use our insights above to find helpful tips or alternatively set up a price alert; this is where momondo will track prices on flights to Denver and let you know when they change.