Is United Airlines the cheapest airline to fly with from Sydney to Denver?

With an average price of $1,539 return, United Airlines is not the cheapest airline to fly from Sydney to Denver with. Instead, for the lowest price, our data suggests flying with Qantas Airways, where a return flight costs $939 on average.

Does United Airlines fly direct to Denver from Sydney?

No, United Airlines does not fly the route directly.

What’s the cheapest day of the week to fly from Sydney to Denver with United Airlines?

On average, the cheapest day of the week to fly from Sydney to Denver with United Airlines is Sunday, when prices are around $775. The most expensive day is generally Friday, when the average price is around $1,114.

What’s the cheapest month to fly from Sydney to Denver with United Airlines?

The cheapest month for United Airlines flights to Denver from Sydney is generally September, where plane tickets cost $764 on average. If possible, try to avoid the most expensive months of February and March, when tickets cost $3,791 and $3,910 respectively.

$1,432 Cheap United Airlines Flights from Sydney to Denver

Flight Deals

Cheap United Airlines Flight Deals from Sydney to Denver

Here are some of the best deals found on KAYAK recently from United Airlines for return flights from Sydney to Denver that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Recent return United Airlines flight deals from Sydney to Denver

Sat, 8 Nov - Sat, 8 Nov

12:10 - 14:38SYD-DEN

20h 28m2 stops

17:40 - 09:05DEN-SYD

21h 25m1 stop

$1,432United Airlines

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Wed, 15 Oct - Wed, 22 Oct

11:20 - 14:59SYD-DEN

20h 39m2 stops

10:14 - 08:00DEN-SYD

28h 46m1 stop

$2,291United Airlines

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Thu, 16 Oct - Thu, 23 Oct

11:20 - 18:13SYD-DEN

23h 53m1 stop

17:52 - 07:55DEN-SYD

21h 03m1 stop

$2,346United Airlines

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Sun, 14 Dec - Sun, 28 Dec

14:00 - 16:47SYD-DEN

20h 47m2 stops

05:00 - 07:00DEN-SYD

32h 00m1 stop

$2,418United Airlines

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Wed, 15 Oct - Wed, 22 Oct

10:30 - 16:17SYD-DEN

22h 47m1 stop

17:52 - 07:55DEN-SYD

21h 03m1 stop

$2,571United Airlines

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Wed, 17 Dec - Sat, 3 Jan

11:50 - 14:31SYD-DEN

20h 41m1 stop

21:11 - 09:15DEN-SYD

42h 04m1 stop

$2,606United Airlines

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Wed, 17 Dec - Sat, 3 Jan

11:50 - 16:17SYD-DEN

22h 27m1 stop

21:11 - 09:15DEN-SYD

42h 04m1 stop

$2,609United Airlines

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Fri, 19 Dec - Sat, 3 Jan

11:50 - 18:19SYD-DEN

24h 29m1 stop

21:11 - 09:15DEN-SYD

42h 04m1 stop

$2,719United Airlines

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Fri, 19 Dec - Fri, 2 Jan

12:10 - 12:23SYD-DEN

18h 13m1 stop

06:00 - 09:05DEN-SYD

33h 05m1 stop

$2,755United Airlines

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Tue, 23 Sep - Fri, 10 Oct

10:20 - 08:35SYD-DEN

38h 15m1 stop

11:28 - 07:55DEN-SYD

27h 27m2 stops

$2,970United Airlines

Find Deal

Useful Info

Low season	September
High season	December
Cheapest flight	$1,432
Average price round-trip	$1,801

Best time to beat the crowds but there is an average 9% increase in price.

Most popular time to fly (48% more expensive on average)

Flight from Sydney to Denver

(price for this month)

When to Book Flights with United Airlines from Sydney to Denver

Average price per month

Flight prices as travel date approaches

Is United Airlines the cheapest airline to fly with from Sydney to Denver?
With an average price of $1,539 return, United Airlines is not the cheapest airline to fly from Sydney to Denver with. Instead, for the lowest price, our data suggests flying with Qantas Airways, where a return flight costs $939 on average.
Does United Airlines fly direct to Denver from Sydney?
No, United Airlines does not fly the route directly.
What’s the cheapest day of the week to fly from Sydney to Denver with United Airlines?
On average, the cheapest day of the week to fly from Sydney to Denver with United Airlines is Sunday, when prices are around $775. The most expensive day is generally Friday, when the average price is around $1,114.
What’s the cheapest month to fly from Sydney to Denver with United Airlines?
The cheapest month for United Airlines flights to Denver from Sydney is generally September, where plane tickets cost $764 on average. If possible, try to avoid the most expensive months of February and March, when tickets cost $3,791 and $3,910 respectively.

7.4

Good8,937 verified ratings

7.1Entertainment

7.7Boarding

6.6Food

8.1Crew

7.3Comfort

Pros +

Cons -

Customer service was very poor. (in 236 reviews)

Show reviews that mention

10.0 Wonderful

Thomas, Aug 2025

CMH-IAD

IAD with the archaic people movers is just a place to be avoided.

6.0 Okay

CLEVELAND, Aug 2025

IAH-LFT

Tight

8.0 Very Good

CLEVELAND, Aug 2025

TPA-IAH

Professional and courteous in all aspects.

8.0 Very Good

Verified traveller, Aug 2025

BKK-NRT

Overall is good, food okay!

8.0 Very Good

Tim, Aug 2025

IAD-MUC

Great service on board. Boarding a bit slow due to process. Food was pretty average.

8.0 Very Good

Tim, Aug 2025

GSP-IAD

It was barebones, but it was expected.

6.0 Okay

Milos, Aug 2025

BOS-VIE

Tastless food and too obvious lack of enthusiasm for service in the economy vesus business class

10.0 Wonderful

Paulos, Aug 2025

YUL-IAD

Overall, it was good. I was seating next to a wonderful lady and did not notice how time flew. Thanks

10.0 Wonderful

Mark, Aug 2025

EWR-GSO

Everything was perfect. Flight attendant was so nice.

2.0 Poor

Verified traveller, Aug 2025

EWR-MCO

8 hour delay. Not happy

Everything you need to know for your flight from Sydney to Denver

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SYD - DEN

$1,432 Find Cheap United Airlines Flights from Sydney to Denver

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When to Book Flights with United Airlines from Sydney to Denver

FAQs for flying to Denver with United Airlines

Is United Airlines the cheapest airline to fly with from Sydney to Denver?

Does United Airlines fly direct to Denver from Sydney?

What’s the cheapest day of the week to fly from Sydney to Denver with United Airlines?

What’s the cheapest month to fly from Sydney to Denver with United Airlines?

United Airlines Customer Reviews

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Everything you need to know for your flight from Sydney to Denver

Other airlines flying from Sydney to Denver

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Cabin class types available on flights to Denver

Cabin classes available on flights to Sydney. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

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The most popular flights on KAYAK according to clicks in the last 2 weeks. Prices are the lowest found on KAYAK over the last 7 days. Price and availability are not guaranteed.

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The most popular destinations for flights with United Airlines according to clicks from KAYAK users. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.