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Cheap flights from Denver to Sydney from $728

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Denver to Sydney departing on 10/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult

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Find the cheapest flights from Denver to Sydney

Cheap return flights

KAYAK's recommended return flight deals from the most popular airlines that fly from Denver to Sydney.
08:00 - 11:45DEN-SYD
35h 45m2 stops
13:45 - 22:12SYD-DEN
24h 27m2 stops
$1,404
Find Deal
Sat, 3 May - Sat, 17 May
06:00 - 11:45DEN-SYD
37h 45m2 stops
06:15 - 23:17SYD-DEN
33h 02m2 stops
$1,453
Find Deal
Tue, 29 Apr - Tue, 6 May
19:05 - 07:20DEN-SYD
20h 15m1 stop
09:20 - 18:04SYD-DEN
24h 44m2 stops
$1,649Air Canada
Find Deal
Mon, 1 Sep - Mon, 15 Sep
19:05 - 07:20DEN-SYD
20h 15m1 stop
10:20 - 18:04SYD-DEN
24h 44m2 stops
$1,665Air Canada
Find Deal
Mon, 22 Sep - Mon, 6 Oct
20:20 - 07:05DEN-SYD
18h 45m1 stop
09:10 - 16:00SYD-DEN
22h 50m1 stop
$2,015Qantas Airways
Find Deal
Tue, 27 May - Tue, 3 Jun
20:20 - 07:05DEN-SYD
18h 45m1 stop
17:45 - 23:09SYD-DEN
21h 24m1 stop
$2,090Qantas Airways
Find Deal
Tue, 27 May - Thu, 5 Jun
10:40 - 07:05DEN-SYD
28h 25m2 stops
17:45 - 21:44SYD-DEN
19h 59m2 stops
$2,099American Airlines
Find Deal
Tue, 22 Jul - Tue, 19 Aug
18:07 - 07:30DEN-SYD
21h 23m1 stop
17:45 - 23:09SYD-DEN
21h 24m1 stop
$2,102American Airlines
Find Deal
Mon, 14 Jul - Tue, 22 Jul
17:59 - 07:00DEN-SYD
21h 01m1 stop
09:30 - 20:47SYD-DEN
27h 17m1 stop
$2,156United Airlines
Find Deal
Mon, 21 Jul - Tue, 19 Aug
13:25 - 07:00DEN-SYD
25h 35m1 stop
09:30 - 08:24SYD-DEN
38h 54m1 stop
$2,218United Airlines
Find Deal
Fri, 27 Jun - Sun, 6 Jul

Qantas Airways flights from Denver to Sydney

Our best Qantas Airways deals on Denver to Sydney flight tickets
Qantas Airways
27 May
DEN20:20Denver Intl
18h 45m
1 stop
SYD07:05Sydney Kingsford Smith
3 June
SYD09:10Sydney Kingsford Smith
22h 50m
1 stop
DEN16:00Denver Intl
Qantas Airways
27 May
DEN20:20Denver Intl
18h 45m
1 stop
SYD07:05Sydney Kingsford Smith
5 June
SYD17:45Sydney Kingsford Smith
21h 24m
1 stop
DEN23:09Denver Intl
Qantas Airways
14 June
DEN17:33Denver Intl
21h 57m
1 stop
SYD07:30Sydney Kingsford Smith
21 June
SYD09:10Sydney Kingsford Smith
29h 59m
1 stop
DEN23:09Denver Intl

Fiji Airways flights from Denver to Sydney

Our best Fiji Airways deals on Denver to Sydney flight tickets
Fiji Airways
1 Apr
DEN18:32Denver Intl
34h 38m
2 stops
SYD22:10Sydney Kingsford Smith
29 Apr
SYD06:15Sydney Kingsford Smith
29h 35m
2 stops
DEN19:50Denver Intl
Fiji Airways
6 May
DEN18:33Denver Intl
35h 37m
2 stops
SYD22:10Sydney Kingsford Smith
13 May
SYD06:15Sydney Kingsford Smith
30h 01m
2 stops
DEN20:16Denver Intl
Fiji Airways
12 Apr
DEN16:46Denver Intl
26h 59m
2 stops
SYD11:45Sydney Kingsford Smith
19 Apr
SYD13:45Sydney Kingsford Smith
21h 53m
2 stops
DEN19:38Denver Intl

See travel insights to Sydney from

How to get the cheapest flight ticket from Denver 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

What is the cheapest month to fly to Sydney?

The month of April is, on average, the cheapest month to fly to Sydney from Denver, with most prices found around $1,396. If you aren’t able to travel to Sydney during the month of April, then flying in March is also cheap. Prices for this month can be found on momondo for an average of $1,418.

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

Our data shows that Thursday is the least expensive day to fly to Sydney. Tickets to fly out on this day can be as low as $0. The most expensive day to fly to Sydney is Tuesday, with ticket prices averaging around $2,459.

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

According to our data, the cheapest time of day to fly to Sydney is at midday. momondo users have found flights departing from Denver to Sydney at midday for as low as $1,491. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are $2,221 on average. Flights to Sydney from Denver in the evening are generally more expensive because this time of day is more convenient for travellers’ schedules.

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

You are more likely to see cheaper flights to Sydney from Denver when booking 21 weeks ahead of your departure date. In general, you can expect to find flights to Sydney for around $1,824 when searching 21 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Sydney from Denver for as low as $1,482 on momondo.

How have Denver to Sydney flight prices changed over time?

As of March 2025, prices for Denver to Sydney flights are approximately 60% cheaper when compared to flights at the same time last year.

When to book flights from Denver to Sydney

Are you open to changing your travel dates? Check out the ideal times to fly from Denver to Sydney according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap Denver to Sydney (DEN to SYD) flight deals and tips

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

Best price found

$728

Fastest flight time

18h 37m

Direct flights

None

Airports in Sydney

1 airport
The best one-way flight to Sydney from Denver in the past 72 hours is $728. The best return flight deal from Denver to Sydney found on momondo in the last 72 hours is $1,404.
The fastest flight from Denver to Sydney takes 18h 37m
There are no direct flights from Denver to Sydney. Popular non-direct route for this connection is Denver Intl Airport - Sydney Kingsford Smith Airport.
There is 1 airport near Sydney: Sydney Kingsford Smith (SYD)

  • How far is Denver Intl to Sydney Kingsford Smith by plane?

    There are 13398.4 km between Denver Intl and Sydney Kingsford Smith. Flights usually cover this in 18h 45m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Denver Intl Airport to Sydney Kingsford Smith Airport?

    Prices for flights from Denver Intl Airport to Sydney Kingsford Smith Airport refresh daily.

  • How many operators does momondo search for flights from Denver Intl Airport to Sydney Kingsford Smith Airport?

  • How old do you have to be to fly from Denver Intl Airport to Sydney Kingsford Smith Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and stopovers. It is recommended that you verify with the airline you are booking with for travel from Denver Intl Airport to Sydney Kingsford Smith Airport.

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

    The travel and health documents you'll need for your trip to Sydney Kingsford Smith Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's licence and a passport that is valid for six months after your intended arrival at Sydney Kingsford Smith Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Denver to Sydney?


Best airlines flying from Denver to Sydney

Compare and see reviews for airlines that fly from Denver to Sydney with momondo
Airline
Rating
Free cancellation
Price
American AirlinesPriceFrom $1,025Free cancellationRating
7.2
10,000 reviews
Search American Airlines flights
Qantas AirwaysPriceFrom $1,308Free cancellationRating
7.5
813 reviews
Search Qantas Airways flights
United AirlinesPriceFrom $1,993Free cancellationRating
7.4
8,614 reviews
Search United Airlines flights

Travelling to a place near Sydney?

Book flights to Sydney if you plan to visit one of these locations
Parramatta
Wollongong
Katoomba
Terrigal
Lithgow
Penrith
Leura
Manly
Coogee
Cronulla
Bondi Beach
Randwick
Charlestown
Newport
Swansea

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Denver to Sydney for you.

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

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

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

Once you have performed a search for Denver to Sydney flights, momondo helps you find the right one 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.

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

Price alerts on flights to Sydney from Denver 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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