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

American Airlines, United Airlines, and Air New Zealand are the most popular carriers operating from Colorado to Sydney Kingsford Smith

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 19h 24m on average. Another popular route from Colorado to Sydney is flying from Colorado Springs to Sydney, which will take roughly 25h 25m. Keep in mind that layovers or delays could extend your travel time.

What airlines fly to Sydney?

Qantas Airways, United Airlines and Air Canada 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 8 different airlines that fly to Sydney on a routine basis, so you have a few additional options to choose from.

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 May 2026, there are 8 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.

$485 Cheap Flights from Colorado to Sydney in 2026

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6:08 pm - 7:05 am

DEN

SYD

20h 57m

1 stop

9:10 am - 11:01 am

SYD

DEN

17h 51m

1 stop

$1,007American Airlines

Tue, Jun 2 - Tue, Jun 16

6:30 pm - 6:50 am

DEN

SYD

20h 20m

1 stop

9:15 am - 12:19 pm

SYD

DEN

19h 04m

1 stop

$1,010Delta

Wed, May 20 - Mon, May 25

6:08 pm - 7:05 am

DEN

SYD

20h 57m

1 stop

9:10 am - 5:20 pm

SYD

DEN

24h 10m

2 stops

$1,011American Airlines

Tue, Jun 2 - Tue, Jun 16

7:55 am - 6:50 am

DEN

SYD

30h 55m

2 stops

9:15 am - 5:35 pm

SYD

DEN

24h 20m

1 stop

$1,015Delta

Wed, May 20 - Mon, May 25

6:19 pm - 9:20 am

DEN

SYD

23h 01m

2 stops

9:10 am - 11:01 am

SYD

DEN

17h 51m

1 stop

$1,029American Airlines

Tue, May 19 - Wed, Jun 3

6:19 pm - 9:20 am

DEN

SYD

23h 01m

2 stops

9:10 am - 6:16 pm

SYD

DEN

25h 06m

2 stops

$1,033American Airlines

Tue, May 19 - Wed, Jun 3

6:58 pm - 7:00 am

ASE

SYD

20h 02m

1 stop

10:20 am - 7:57 pm

SYD

ASE

25h 37m

1 stop

$1,259Air New Zealand

Thu, Aug 13 - Sat, Aug 22

9:40 am - 6:55 am

ASE

SYD

29h 15m

1 stop

9:30 am - 1:34 pm

SYD

ASE

20h 04m

1 stop

$1,260Air New Zealand

Thu, Aug 13 - Sat, Aug 22

3:25 pm - 7:00 am

ASE

SYD

23h 35m

2 stops

9:30 am - 2:23 pm

SYD

ASE

20h 53m

2 stops

$1,265United Airlines

Thu, Aug 13 - Sat, Aug 22

3:25 pm - 7:00 am

ASE

SYD

23h 35m

2 stops

9:30 am - 1:36 pm

SYD

ASE

20h 06m

1 stop

$1,266United Airlines

Thu, Aug 13 - Sat, Aug 22

Qantas Airways flights from Colorado to Sydney

Our best Qantas Airways deals on Colorado to Sydney flight tickets

Qantas Airways

May 16

DEN8:35 pmDenver Intl

51h 25m

2 stops

SYD4:00 pmSydney Kingsford Smith

May 31

SYD9:10 amSydney Kingsford Smith

24h 27m

1 stop

DEN5:37 pmDenver Intl

$1,227

Qantas Airways

May 13

DEN12:41 pmDenver Intl

26h 24m

1 stop

SYD7:05 amSydney Kingsford Smith

May 22

SYD9:10 amSydney Kingsford Smith

17h 51m

1 stop

DEN11:01 amDenver Intl

$1,256

Qantas Airways

May 16

DEN8:35 pmDenver Intl

51h 25m

2 stops

SYD4:00 pmSydney Kingsford Smith

May 31

SYD9:55 amSydney Kingsford Smith

41h 06m

2 stops

DEN11:01 amDenver Intl

$1,258

United Airlines flights from Colorado to Sydney

Our best United Airlines deals on Colorado to Sydney flight tickets

United Airlines

Aug 13

ASE3:25 pmAspen Pitkin County

23h 35m

2 stops

SYD7:00 amSydney Kingsford Smith

Aug 22

SYD9:30 amSydney Kingsford Smith

20h 53m

2 stops

ASE2:23 pmAspen Pitkin County

$1,265

United Airlines

Aug 13

ASE3:25 pmAspen Pitkin County

23h 35m

2 stops

SYD7:00 amSydney Kingsford Smith

Aug 22

SYD9:30 amSydney Kingsford Smith

20h 06m

1 stop

ASE1:36 pmAspen Pitkin County

$1,266

United Airlines

Aug 13

ASE6:58 pmAspen Pitkin County

20h 02m

1 stop

SYD7:00 amSydney Kingsford Smith

Aug 22

SYD10:20 amSydney Kingsford Smith

25h 37m

1 stop

ASE7:57 pmAspen Pitkin County

$1,340

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Tue 6/2

6:08 pm-7:05 am

1 stop20h 57m

Sydney Kingsford Smith

Tue 6/16

9:10 am-11:01 am

1 stop17h 51m

$1,007

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Wed 5/20

6:30 pm-6:50 am

1 stop20h 20m

Sydney Kingsford Smith

Mon 5/25

9:15 am-12:19 pm

1 stop19h 04m

$1,010

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Tue 6/2

6:08 pm-7:05 am

1 stop20h 57m

Sydney Kingsford Smith

Tue 6/16

9:10 am-5:20 pm

2 stops24h 10m

$1,011

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Wed 5/20

7:55 am-6:50 am

2 stops30h 55m

Sydney Kingsford Smith

Mon 5/25

9:15 am-5:35 pm

1 stop24h 20m

$1,015

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Tue 5/19

6:19 pm-9:20 am

2 stops23h 01m

Sydney Kingsford Smith

Wed 6/3

9:10 am-11:01 am

1 stop17h 51m

$1,029

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Tue 5/19

6:19 pm-9:20 am

2 stops23h 01m

Sydney Kingsford Smith

Wed 6/3

9:10 am-6:16 pm

2 stops25h 06m

$1,033

AspenSydney

ASE - SYD

ASESYD

Aspen Pitkin County

Thu 8/13

6:58 pm-7:00 am

1 stop20h 02m

Sydney Kingsford Smith

Sat 8/22

10:20 am-7:57 pm

1 stop25h 37m

$1,259

AspenSydney

ASE - SYD

ASESYD

Aspen Pitkin County

Thu 8/13

9:40 am-6:55 am

1 stop29h 15m

Sydney Kingsford Smith

Sat 8/22

9:30 am-1:34 pm

1 stop20h 04m

$1,260

AspenSydney

ASE - SYD

ASESYD

Aspen Pitkin County

Thu 8/13

3:25 pm-7:00 am

2 stops23h 35m

Sydney Kingsford Smith

Sat 8/22

9:30 am-2:23 pm

2 stops20h 53m

$1,265

AspenSydney

ASE - SYD

ASESYD

Aspen Pitkin County

Thu 8/13

3:25 pm-7:00 am

2 stops23h 35m

Sydney Kingsford Smith

Sat 8/22

9:30 am-1:36 pm

1 stop20h 06m

$1,266

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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

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Other information

What is the cheapest month to fly to Sydney?

In general, February 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 $113. If you are unable to visit Sydney during the month of February, then departing from Colorado during the month September is also very affordable. Most momondo users find prices during this month for around $145.

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 $1,332 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 $1,130 on momondo.

Can stopping save me money on Colorado to Sydney flights?

You could potentially save up to 30% 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

Fastest flight time	19h 24m
Direct flights	None

The fastest flight from Colorado to Sydney takes 19h 24m

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

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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 May 2026, there are 8 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 $253	Free Cancellation	Rating 7.9 8,451 reviews	Search Delta flights
Fiji Airways	PriceFrom $684	Free Cancellation	Rating 8.1 240 reviews	Search Fiji Airways flights
Alaska Airlines	PriceFrom $745	Free Cancellation	Rating 7.9 12,352 reviews	Search Alaska Airlines flights
Qantas Airways	PriceFrom $800	Free Cancellation	Rating 7.5 1,034 reviews	Search Qantas Airways flights
American Airlines	PriceFrom $844	Free Cancellation	Rating 7.1 11,667 reviews	Search American Airlines flights
United Airlines	PriceFrom $853	Free Cancellation	Rating 7.4 9,699 reviews	Search United Airlines flights
Air Canada	PriceFrom $1,009	Free Cancellation	Rating 7.1 11,017 reviews	Search Air Canada flights
Air New Zealand	PriceFrom $1,144	Free Cancellation	Rating 8.0 640 reviews	Search Air New Zealand flights

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Manly

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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 $485

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 7/25. 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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An easier way to manage your Sydney trip

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