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

United Airlines, Delta, and Turkish Airlines are the most popular carriers operating from Colorado to Sydney Kingsford Smith

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 35% 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.

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 23h 20m on average. Another popular route from Colorado to Sydney is flying from Colorado Springs to Sydney, which will take roughly 25h 52m. 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 June 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.

$430 Cheap Flights from Colorado to Sydney in 2026

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Round-trip

One-way

Last minute

Cheap round-trip flights

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7:25 am - 11:50 am

DEN

SYD

36h 25m

2 stops

5:50 pm - 10:03 am

SYD

DEN

32h 13m

1 stop

$1,072Multiple Airlines

Tue, Aug 11 - Tue, Aug 18

7:00 am - 11:50 am

DEN

SYD

36h 50m

2 stops

5:50 pm - 12:44 am

SYD

DEN

22h 54m

1 stop

$1,088Multiple Airlines

Thu, Aug 13 - Sat, Sep 5

6:30 am - 12:50 pm

DEN

SYD

37h 20m

2 stops

6:50 pm - 9:40 am

SYD

DEN

31h 50m

1 stop

$1,092Multiple Airlines

Tue, Oct 13 - Tue, Oct 20

1:30 pm - 7:00 am

COS

SYD

25h 30m

2 stops

10:20 am - 6:47 pm

SYD

COS

24h 27m

2 stops

$1,192United Airlines

Wed, Aug 5 - Wed, Aug 12

11:53 am - 8:45 am

ASE

SYD

28h 52m

2 stops

7:20 pm - 7:52 pm

SYD

ASE

40h 32m

2 stops

$1,285Air New Zealand

Thu, Aug 13 - Sat, Aug 22

9:40 am - 6:55 am

ASE

SYD

29h 15m

1 stop

10:20 am - 7:52 pm

SYD

ASE

25h 32m

1 stop

$1,286United Airlines

Thu, Aug 13 - Sat, Aug 22

7:00 am - 7:20 am

COS

SYD

32h 20m

3 stops

9:20 am - 8:40 am

SYD

COS

39h 20m

2 stops

$1,896Air Canada

Thu, Aug 13 - Mon, Aug 17

3:51 pm - 6:55 am

COS

SYD

23h 04m

1 stop

12:00 pm - 6:40 pm

SYD

COS

22h 40m

1 stop

$1,982Qantas Airways

Wed, Aug 5 - Wed, Aug 12

7:45 am - 7:20 am

COS

SYD

31h 35m

3 stops

9:20 am - 8:40 am

SYD

COS

39h 20m

2 stops

$2,154Air Canada

Thu, Aug 13 - Mon, Aug 17

5:13 pm - 6:55 am

COS

SYD

21h 42m

1 stop

12:00 pm - 6:40 pm

SYD

COS

22h 40m

1 stop

$2,507Qantas Airways

Thu, Aug 13 - Mon, Aug 17

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United Airlines flights from Colorado to Sydney

Our best United Airlines deals on Colorado to Sydney flight tickets

United Airlines

Aug 5

COS1:30 pmColorado Springs

25h 30m

2 stops

SYD7:00 amSydney Kingsford Smith

Aug 12

SYD10:20 amSydney Kingsford Smith

24h 27m

2 stops

COS6:47 pmColorado Springs

$1,192

United Airlines

Aug 13

ASE9:40 amAspen Pitkin County

29h 15m

1 stop

SYD6:55 amSydney Kingsford Smith

Aug 22

SYD10:20 amSydney Kingsford Smith

25h 32m

1 stop

ASE7:52 pmAspen Pitkin County

$1,286

United Airlines

Aug 13

ASE9:40 amAspen Pitkin County

29h 15m

1 stop

SYD6:55 amSydney Kingsford Smith

Aug 22

SYD10:20 amSydney Kingsford Smith

25h 32m

1 stop

ASE7:52 pmAspen Pitkin County

$1,287

Qantas Airways flights from Colorado to Sydney

Our best Qantas Airways deals on Colorado to Sydney flight tickets

Qantas Airways

Aug 5

COS3:51 pmColorado Springs

23h 04m

1 stop

SYD6:55 amSydney Kingsford Smith

Aug 12

SYD12:00 pmSydney Kingsford Smith

22h 40m

1 stop

COS6:40 pmColorado Springs

$1,982

Qantas Airways

Aug 13

COS5:13 pmColorado Springs

21h 42m

1 stop

SYD6:55 amSydney Kingsford Smith

Aug 17

SYD12:00 pmSydney Kingsford Smith

22h 40m

1 stop

COS6:40 pmColorado Springs

$2,507

Qantas Airways

Aug 13

COS5:13 pmColorado Springs

21h 42m

1 stop

SYD6:55 amSydney Kingsford Smith

Aug 17

SYD12:00 pmSydney Kingsford Smith

18h 54m

1 stop

COS2:54 pmColorado Springs

$2,657

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Tue 8/11

7:25 am-11:50 am

2 stops36h 25m

Sydney Kingsford Smith

Tue 8/18

5:50 pm-10:03 am

1 stop32h 13m

$1,072

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Thu 8/13

7:00 am-11:50 am

2 stops36h 50m

Sydney Kingsford Smith

Sat 9/5

5:50 pm-12:44 am

1 stop22h 54m

$1,088

DenverSydney

DEN - SYD

DENSYD

Denver Intl

Tue 10/13

6:30 am-12:50 pm

2 stops37h 20m

Sydney Kingsford Smith

Tue 10/20

6:50 pm-9:40 am

1 stop31h 50m

$1,092

Colorado SpringsSydney

COS - SYD

COSSYD

Colorado Springs

Wed 8/5

1:30 pm-7:00 am

2 stops25h 30m

Sydney Kingsford Smith

Wed 8/12

10:20 am-6:47 pm

2 stops24h 27m

$1,192

AspenSydney

ASE - SYD

ASESYD

Aspen Pitkin County

Thu 8/13

11:53 am-8:45 am

2 stops28h 52m

Sydney Kingsford Smith

Sat 8/22

7:20 pm-7:52 pm

2 stops40h 32m

$1,285

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

10:20 am-7:52 pm

1 stop25h 32m

$1,286

Colorado SpringsSydney

COS - SYD

COSSYD

Colorado Springs

Thu 8/13

7:00 am-7:20 am

3 stops32h 20m

Sydney Kingsford Smith

Mon 8/17

9:20 am-8:40 am

2 stops39h 20m

$1,896

Colorado SpringsSydney

COS - SYD

COSSYD

Colorado Springs

Wed 8/5

3:51 pm-6:55 am

1 stop23h 04m

Sydney Kingsford Smith

Wed 8/12

12:00 pm-6:40 pm

1 stop22h 40m

$1,982

Colorado SpringsSydney

COS - SYD

COSSYD

Colorado Springs

Thu 8/13

7:45 am-7:20 am

3 stops31h 35m

Sydney Kingsford Smith

Mon 8/17

9:20 am-8:40 am

2 stops39h 20m

$2,154

Quickest round-trip

Colorado SpringsSydney

COS - SYD

COSSYD

Colorado Springs

Thu 8/13

5:13 pm-6:55 am

1 stop21h 42m

Sydney Kingsford Smith

Mon 8/17

12:00 pm-6:40 pm

1 stop22h 40m

$2,507

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

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Other information

What is the cheapest month to fly to Sydney?

In general, September 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 $73. If you are unable to visit Sydney during the month of September, then departing from Colorado during the month February is also very affordable. Most momondo users find prices during this month for around $113.

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 $1,318 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 $1,158 on momondo.

Can stopping save me money on Colorado to Sydney flights?

You could potentially save up to 5% 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	23h 20m
Direct flights	None

The fastest flight from Colorado to Sydney takes 23h 20m

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 June 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 7.8 8,445 reviews	Search Delta flights
Fiji Airways	PriceFrom $684	Free Cancellation	Rating 8.1 245 reviews	Search Fiji Airways flights
Alaska Airlines	PriceFrom $745	Free Cancellation	Rating 7.9 12,577 reviews	Search Alaska Airlines flights
Qantas Airways	PriceFrom $800	Free Cancellation	Rating 7.5 1,050 reviews	Search Qantas Airways flights
American Airlines	PriceFrom $844	Free Cancellation	Rating 7.1 11,768 reviews	Search American Airlines flights
United Airlines	PriceFrom $853	Free Cancellation	Rating 7.4 9,891 reviews	Search United Airlines flights
Air Canada	PriceFrom $1,009	Free Cancellation	Rating 7.1 11,260 reviews	Search Air Canada flights
Air New Zealand	PriceFrom $1,144	Free Cancellation	Rating 8.0 646 reviews	Search Air New Zealand flights

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Lithgow

Manly

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Cronulla

Terrigal

Charlestown

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 $430

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 8/8. 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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How to get the cheapest flight ticket from Colorado to Sydney

What is the cheapest month to fly to Sydney?

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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?

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An easier way to manage your Sydney trip

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