What is the cheapest airline that flies from Colorado to Sydney Kingsford Smith?

Alaska Airlines, United Airlines, and Air Canada are the most popular carriers operating from Colorado to Sydney Kingsford Smith

What airlines fly to Sydney?

Qantas Airways, Air Canada and United Airlines are the top three most popular airlines that fly to Sydney from Colorado according to our data. Qantas Airways is the first choice among our users, with 36% of people opting to fly with this airline when traveling to Sydney. Keep in mind that there are 7 different airlines that fly to Sydney on a routine basis, so you have a few additional options to choose from.

How long does it take to fly to Sydney?

Flight times from Colorado to Sydney vary, but if you’re flying out of Denver and flying into Sydney (one of the most popular routes), then the duration is 18h 39m on average. Another popular route from Colorado to Sydney is flying from Aspen to Sydney, which will take roughly 19h 48m. Keep in mind that layovers or delays could extend your travel time.

When did momondo last update prices for flights from Colorado to Sydney Kingsford Smith Airport?

Prices for flights from Colorado to Sydney Kingsford Smith Airport are refreshed on a daily basis.

How many operators does momondo search for flights from Colorado to Sydney Kingsford Smith Airport?

As of September 2026, there are 7 operators available to choose from for flights from Colorado to Sydney Kingsford Smith Airport.

How old do you have to be to fly from Colorado to Sydney Kingsford Smith 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 layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Colorado to Sydney Kingsford Smith Airport.

What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?

The required travel and health documents for your Sydney Kingsford Smith Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Sydney Kingsford Smith Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$494 Cheap Flights from Colorado to Sydney in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Colorado to Sydney

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

9:00 am - 12:35 pmDEN Denver Intl-SYD Sydney Kingsford Smith

34h 35m2 stops Los Angeles Nadi

2:00 pm - 6:10 pmSYD Sydney Kingsford Smith-DEN Denver Intl

46h 10m3 stops Nadi Los Angeles Las Vegas Harry Reid Intl

$1,021Multiple Airlines

Mon, Oct 26 - Mon, Nov 9

2:14 pm - 12:35 pmDEN Denver Intl-SYD Sydney Kingsford Smith

28h 21m3 stops Phoenix Sky Harbor Intl Los Angeles Nadi

2:00 pm - 9:48 amSYD Sydney Kingsford Smith-DEN Denver Intl

37h 48m3 stops Nadi Los Angeles Las Vegas Harry Reid Intl

$1,023Multiple Airlines

Mon, Nov 9 - Mon, Nov 16

7:45 am - 10:35 amDEN Denver Intl-SYD Sydney Kingsford Smith

32h 50m2 stops San Francisco Auckland Intl

11:50 am - 6:18 pmSYD Sydney Kingsford Smith-DEN Denver Intl

24h 28m2 stops Auckland Intl San Francisco

$1,138Air New Zealand

Mon, Feb 1 - Wed, Feb 10

3:58 pm - 10:35 amDEN Denver Intl-SYD Sydney Kingsford Smith

24h 37m2 stops San Francisco Auckland Intl

11:50 am - 5:50 pmSYD Sydney Kingsford Smith-DEN Denver Intl

23h 00m2 stops Auckland Intl Los Angeles

$1,138Air New Zealand

Tue, Feb 23 - Tue, Mar 16

7:35 am - 7:00 amCOS Colorado Springs-SYD Sydney Kingsford Smith

29h 25m1 stop Houston George Bush Intcntl

9:15 am - 11:21 amSYD Sydney Kingsford Smith-COS Colorado Springs

20h 06m1 stop Houston George Bush Intcntl

$1,309United Airlines

Wed, Nov 18 - Wed, Dec 9

2:55 pm - 9:05 amCOS Colorado Springs-SYD Sydney Kingsford Smith

24h 10m2 stops Denver Intl Los Angeles

11:50 am - 2:34 pmSYD Sydney Kingsford Smith-COS Colorado Springs

20h 44m2 stops San Francisco Denver Intl

$1,314United Airlines

Wed, Nov 18 - Wed, Dec 9

7:34 pm - 6:25 amASE Aspen Pitkin County-SYD Sydney Kingsford Smith

40h 51m1 stop Los Angeles

2:05 pm - 4:26 pmSYD Sydney Kingsford Smith-ASE Aspen Pitkin County

20h 21m1 stop Dallas/Fort Worth

$1,364Qantas Airways

Sat, Feb 13 - Tue, Feb 23

7:00 pm - 8:35 amDEN Denver Intl-SYD Sydney Kingsford Smith

20h 35m1 stop Vancouver Intl

11:20 am - 12:43 pmSYD Sydney Kingsford Smith-DEN Denver Intl

19h 23m1 stop Vancouver Intl

$1,401Air Canada

Sun, Oct 25 - Sun, Nov 8

7:00 pm - 8:35 amDEN Denver Intl-SYD Sydney Kingsford Smith

20h 35m1 stop Vancouver Intl

10:20 am - 6:17 pmSYD Sydney Kingsford Smith-DEN Denver Intl

24h 57m1 stop Vancouver Intl

$1,410Air Canada

Sun, Mar 14 - Tue, Mar 23

6:46 pm - 9:00 amDEN Denver Intl-SYD Sydney Kingsford Smith

20h 14m1 stop Los Angeles

11:10 am - 11:45 amSYD Sydney Kingsford Smith-DEN Denver Intl

18h 35m1 stop Los Angeles

$1,639Qantas Airways

Tue, Nov 17 - Tue, Dec 1

Cheap last minute flights

Enter your travel dates to find the best prices.

1:10 pm - 11:50 amDEN Denver Intl-SYD Sydney Kingsford Smith

30h 40m2 stops Los Angeles Nadi

2:00 pm - 11:49 pmSYD Sydney Kingsford Smith-DEN Denver Intl

27h 49m3 stops Nadi Los Angeles Las Vegas Harry Reid Intl

$1,044Multiple Airlines

Sat, Sep 26 - Tue, Nov 3

1:18 pm - 11:50 amDEN Denver Intl-SYD Sydney Kingsford Smith

30h 32m3 stops Phoenix Sky Harbor Intl Los Angeles Nadi

2:00 pm - 11:49 pmSYD Sydney Kingsford Smith-DEN Denver Intl

27h 49m3 stops Nadi Los Angeles Las Vegas Harry Reid Intl

$1,073Multiple Airlines

Sat, Sep 26 - Tue, Nov 3

3:39 pm - 6:55 amDEN Denver Intl-SYD Sydney Kingsford Smith

23h 16m1 stop San Francisco

11:55 am - 6:05 pmSYD Sydney Kingsford Smith-DEN Denver Intl

23h 10m2 stops Auckland Intl San Francisco

$1,497Air New Zealand

Tue, Sep 29 - Wed, Oct 14

12:25 pm - 6:50 amDEN Denver Intl-SYD Sydney Kingsford Smith

26h 25m1 stop Los Angeles

10:15 am - 6:09 pmSYD Sydney Kingsford Smith-DEN Denver Intl

24h 54m1 stop Los Angeles

$1,510Delta

Tue, Sep 29 - Wed, Oct 14

12:25 pm - 6:50 amDEN Denver Intl-SYD Sydney Kingsford Smith

26h 25m1 stop Los Angeles

10:15 am - 6:09 pmSYD Sydney Kingsford Smith-DEN Denver Intl

24h 54m1 stop Los Angeles

$1,510Delta

Mon, Sep 28 - Wed, Oct 21

5:40 pm - 7:00 amDEN Denver Intl-SYD Sydney Kingsford Smith

21h 20m1 stop Los Angeles

6:15 pm - 7:45 pmSYD Sydney Kingsford Smith-DEN Denver Intl

42h 30m2 stops Auckland Intl Los Angeles

$1,563Air New Zealand

Tue, Sep 29 - Thu, Oct 15

11:06 am - 7:05 amDEN Denver Intl-SYD Sydney Kingsford Smith

27h 59m1 stop Los Angeles

1:00 pm - 9:47 pmSYD Sydney Kingsford Smith-DEN Denver Intl

25h 47m1 stop Dallas/Fort Worth

$1,955American Airlines

Mon, Sep 28 - Wed, Oct 21

11:23 am - 7:20 amDEN Denver Intl-SYD Sydney Kingsford Smith

27h 57m2 stops Edmonton Vancouver Intl

10:20 am - 11:54 pmSYD Sydney Kingsford Smith-DEN Denver Intl

30h 34m3 stops Vancouver Intl Toronto Pearson Intl Chicago O'Hare Intl

$1,959Air Canada

Mon, Sep 28 - Wed, Oct 21

11:06 am - 7:05 amDEN Denver Intl-SYD Sydney Kingsford Smith

27h 59m1 stop Los Angeles

8:15 pm - 9:49 amSYD Sydney Kingsford Smith-DEN Denver Intl

30h 34m2 stops Honolulu Dallas/Fort Worth

$4,177Qantas Airways

Mon, Sep 28 - Sat, Oct 10

5:58 pm - 7:20 amDEN Denver Intl-SYD Sydney Kingsford Smith

45h 22m3 stops Atlanta Hartsfield-Jackson Toronto Pearson Intl Vancouver Intl

10:20 am - 8:17 pmSYD Sydney Kingsford Smith-DEN Denver Intl

26h 57m2 stops Vancouver Intl Toronto Pearson Intl

$17,036Air Canada

Tue, Sep 29 - Wed, Oct 14

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Delta flights from Colorado to Sydney

Our best Delta deals on Colorado to Sydney flight tickets

Delta

Sep 29

DEN12:25 pmDenver Intl

26h 25m

1 stop

SYD6:50 amSydney Kingsford Smith

Oct 13

SYD10:15 amSydney Kingsford Smith

18h 11m

1 stop

DEN11:26 amDenver Intl

$1,510

Delta

Sep 29

DEN12:25 pmDenver Intl

26h 25m

1 stop

SYD6:50 amSydney Kingsford Smith

Oct 14

SYD10:15 amSydney Kingsford Smith

24h 54m

1 stop

DEN6:09 pmDenver Intl

$1,511

Delta

Sep 29

DEN5:30 amDenver Intl

33h 20m

2 stops

SYD6:50 amSydney Kingsford Smith

Oct 14

SYD10:15 amSydney Kingsford Smith

23h 41m

2 stops

DEN4:56 pmDenver Intl

$1,515

Air New Zealand flights from Colorado to Sydney

Our best Air New Zealand deals on Colorado to Sydney flight tickets

Air New Zealand

Feb 1

DEN7:45 amDenver Intl

32h 50m

2 stops

SYD10:35 amSydney Kingsford Smith

Feb 10

SYD11:50 amSydney Kingsford Smith

24h 28m

2 stops

DEN6:18 pmDenver Intl

$1,138

Air New Zealand

Feb 23

DEN5:00 amDenver Intl

33h 35m

2 stops

SYD8:35 amSydney Kingsford Smith

Mar 16

SYD7:25 pmSydney Kingsford Smith

39h 25m

2 stops

DEN5:50 pmDenver Intl

$1,157

Air New Zealand

Oct 26

ASE2:17 pmAspen Pitkin County

25h 18m

2 stops

SYD8:35 amSydney Kingsford Smith

Nov 2

SYD9:55 amSydney Kingsford Smith

45h 41m

2 stops

ASE1:36 pmAspen Pitkin County

$1,161

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DenverSydney

DEN Denver Intl - SYD Sydney Kingsford Smith

DENSYD

Denver Intl

Mon 10/26

9:00 am-12:35 pm

2 stops34h 35m

Sydney Kingsford Smith

Mon 11/9

2:00 pm-6:10 pm

3 stops46h 10m

$1,021

DenverSydney

DEN Denver Intl - SYD Sydney Kingsford Smith

DENSYD

Denver Intl

Mon 11/9

2:14 pm-12:35 pm

3 stops28h 21m

Sydney Kingsford Smith

Mon 11/16

2:00 pm-9:48 am

3 stops37h 48m

$1,023

DenverSydney

DEN Denver Intl - SYD Sydney Kingsford Smith

DENSYD

Denver Intl

Mon 2/1

7:45 am-10:35 am

2 stops32h 50m

Sydney Kingsford Smith

Wed 2/10

11:50 am-6:18 pm

2 stops24h 28m

$1,138

DenverSydney

DEN Denver Intl - SYD Sydney Kingsford Smith

DENSYD

Denver Intl

Tue 2/23

3:58 pm-10:35 am

2 stops24h 37m

Sydney Kingsford Smith

Tue 3/16

11:50 am-5:50 pm

2 stops23h 00m

$1,138

Colorado SpringsSydney

COS Colorado Springs - SYD Sydney Kingsford Smith

COSSYD

Colorado Springs

Wed 11/18

7:35 am-7:00 am

1 stop29h 25m

Sydney Kingsford Smith

Wed 12/9

9:15 am-11:21 am

1 stop20h 06m

$1,309

Colorado SpringsSydney

COS Colorado Springs - SYD Sydney Kingsford Smith

COSSYD

Colorado Springs

Wed 11/18

2:55 pm-9:05 am

2 stops24h 10m

Sydney Kingsford Smith

Wed 12/9

11:50 am-2:34 pm

2 stops20h 44m

$1,314

AspenSydney

ASE Aspen Pitkin County - SYD Sydney Kingsford Smith

ASESYD

Aspen Pitkin County

Sat 2/13

7:34 pm-6:25 am

1 stop40h 51m

Sydney Kingsford Smith

Tue 2/23

2:05 pm-4:26 pm

1 stop20h 21m

$1,364

DenverSydney

DEN Denver Intl - SYD Sydney Kingsford Smith

DENSYD

Denver Intl

Sun 10/25

7:00 pm-8:35 am

1 stop20h 35m

Sydney Kingsford Smith

Sun 11/8

11:20 am-12:43 pm

1 stop19h 23m

$1,401

DenverSydney

DEN Denver Intl - SYD Sydney Kingsford Smith

DENSYD

Denver Intl

Sun 3/14

7:00 pm-8:35 am

1 stop20h 35m

Sydney Kingsford Smith

Tue 3/23

10:20 am-6:17 pm

1 stop24h 57m

$1,410

Quickest round-trip

DenverSydney

DEN Denver Intl - SYD Sydney Kingsford Smith

DENSYD

Denver Intl

Tue 11/17

6:46 pm-9:00 am

1 stop20h 14m

Sydney Kingsford Smith

Tue 12/1

11:10 am-11:45 am

1 stop18h 35m

$1,639

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Colorado to Sydney

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to Sydney?

In general, May is the cheapest month to fly from Colorado to Sydney. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $1,180. If you are unable to visit Sydney during the month of May, then departing from Colorado during the month April is also very affordable. Most momondo users find prices during this month for around $1,183.

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

You are more likely to see cheaper flights to Sydney from Colorado when booking weeks ahead of your departure date. In general, you can expect to find flights to Sydney for around $1,367 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Sydney from Colorado for as low as $1,061 on momondo.

Can stopping save me money on Colorado to Sydney flights?

You could potentially save up to 10% on your flight if you consider stops on a Colorado to Sydney flight.

Cheap Colorado to Sydney flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Colorado to Sydney

Best Price Found	$494
Fastest flight time	18h 39m
Direct flights	None

The best one-way flight to Sydney from Colorado in the past 72 hours is $494. The best round-trip flight deal from Colorado to Sydney found on momondo in the last 72 hours is $1,021.

The fastest flight from Colorado to Sydney takes 18h 39m

There are no direct flights from Colorado to Sydney. There are no popular flight routes from Colorado to Sydney.

Search flight deals

Frequently asked questions about flying from Colorado to Sydney

When did momondo last update prices for flights from Colorado to Sydney Kingsford Smith Airport?
Prices for flights from Colorado to Sydney Kingsford Smith Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Colorado to Sydney Kingsford Smith Airport?
As of September 2026, there are 7 operators available to choose from for flights from Colorado to Sydney Kingsford Smith Airport.
How old do you have to be to fly from Colorado to Sydney Kingsford Smith 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 layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Colorado to Sydney Kingsford Smith Airport.
What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?
The required travel and health documents for your Sydney Kingsford Smith Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Sydney Kingsford Smith Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Colorado to Sydney

Compare and see reviews for airlines that fly from Colorado to Sydney with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $215	Free Cancellation	Rating 7.8 8,592 reviews	Search Delta flights
Fiji Airways	PriceFrom $684	Free Cancellation	Rating 8.0 259 reviews	Search Fiji Airways flights
American Airlines	PriceFrom $844	Free Cancellation	Rating 7.0 12,076 reviews	Search American Airlines flights
Qantas Airways	PriceFrom $847	Free Cancellation	Rating 7.5 1,101 reviews	Search Qantas Airways flights
United Airlines	PriceFrom $853	Free Cancellation	Rating 7.4 10,226 reviews	Search United Airlines flights
Air Canada	PriceFrom $1,050	Free Cancellation	Rating 7.1 11,668 reviews	Search Air Canada flights
Air New Zealand	PriceFrom $1,180	Free Cancellation	Rating 8.0 669 reviews	Search Air New Zealand flights

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Leura

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Manly

Terrigal

Lithgow

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Swansea

Why use momondo?

Why should I use momondo to find a flight deal from Colorado to Sydney?

Finding the right flight to Sydney from Colorado is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Sydney quick and easy, saving you time and money.

Can I find flights from Colorado to Sydney with flexible booking policies on momondo?

Yes. All flights to Sydney from Colorado on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Colorado to Sydney?

momondo helps you find the best flight between Colorado and Sydney by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Colorado to Sydney right now. Can momondo alert me if prices change?

Price alerts on flights to Sydney from Colorado are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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Cheap flights from Colorado to Sydney from $494

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Colorado to Sydney departing on 11/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Delta flights from Colorado to Sydney

Our best Delta deals on Colorado to Sydney flight tickets

Air New Zealand flights from Colorado to Sydney

Our best Air New Zealand deals on Colorado to Sydney flight tickets

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See travel insights to Sydney from

How to get the cheapest flight ticket from Colorado to Sydney

What is the cheapest month to fly to Sydney?

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

Can stopping save me money on Colorado to Sydney flights?

What is the cheapest airline that flies from Colorado to Sydney Kingsford Smith?

What airlines fly to Sydney?

How long does it take to fly to Sydney?

Cheap Colorado to Sydney flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying from Colorado to Sydney

Best airlines flying from Colorado to Sydney

Compare and see reviews for airlines that fly from Colorado to Sydney with momondo

Traveling to a place near Sydney?

Why use momondo?

An easier way to manage your Sydney trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

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Cabin classes currently available on flights to Sydney

List of cabin classes available on flights landing in Sydney. Availability may vary depending on flight origin and airline.

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