$944 Cheap United flights from Denver to Sydney (DEN to SYD)

Find The Best Day To Fly from Denver to Sydney

Amazing United DEN to SYD Flight Deals

The cheapest flights to Kingsford Smith Intl. found within the past 7 days were $1,365 round trip and $944 one way. Prices and availability subject to change. Additional terms may apply.

Wed, Feb 4 - Wed, Feb 11
DEN
Denver
SYD
Sydney
$1,365 Roundtrip, found 3 days ago
$1,365
Roundtrip
found 3 days ago
Select United flight, departing Wed, Feb 4 from Denver to Sydney, returning Wed, Feb 11, priced at $1,365 found 3 days ago

SYD From DEN Economy Coach Packages on Similar Airlines

Price found within the past 48 hours. Click for updated prices.
APX Darling Harbour

APX Darling Harbour

3.5 out of 5
Price was $2,349, price is now $1,954 per person
$1,954
per person
Feb 15 - Feb 20
found 16 hours ago
Roundtrip non-stop flight included
Denver (DEN) to Sydney (SYD)
YEHS Hotel Sydney Harbour Suites

YEHS Hotel Sydney Harbour Suites

4 out of 5
Price was $2,682, price is now $2,072 per person
$2,072
per person
Feb 15 - Feb 20
found 16 hours ago
Roundtrip non-stop flight included
Denver (DEN) to Sydney (SYD)
Don't see what you're looking for?
See all available trips from Denver Intl. to Kingsford Smith Intl.
View all trips

Frequently asked questions

Can I catch a flight from Denver Intl. Airport (DEN) to Kingsford Smith Intl. Airport (SYD) right now?
It's always wise to learn about any travel advice reports and quarantine requirements in place in your destination. Ensure you visit the Covid-19 Travel Advisor for up-to-date information on booking a flight to Sydney Airport from Denver Intl. Airport (DEN).
What terminal is United Airlines at Denver Airport?
As soon as you get your ticket for your United Airlines flight from Denver Intl. Airport (DEN) to Sydney Airport, check if the terminal details are printed on it. If not, consult your air carrier. They'll be able to advise exactly where you'll be flying in and out of.
Are there United Airlines non-stop flights from DEN to SYD?
There aren't any direct flights with United Airlines from Denver Airport to Kingsford Smith Intl. Airport (SYD). You will have at least one stopover, so use the time to wander around and stretch those legs before catching your next flight.
How long is a United Airlines flight from DEN to SYD?
If you're jetting from DEN to SYD with United Airlines, settle in and make yourself comfortable. This long-haul flight takes around 17 hours and 57 minutes, so try to get some shut-eye if you want to avoid jet lag.
How many direct and indirect flights does United Airlines fly from DEN to SYD?
During each week, you'll find roughly 7 United Airlines flights connecting DEN and SYD.
If I am not able to travel due to COVID-19, can I change my booking to a later date?
For more info about changing your flight to SYD, please visit our Customer Service Portal.
What is the best day to buy a plane ticket?
This just in! Airfares offered on Thursdays tend to be the cheapest, according to flight demand on Travelocity in 2021. Tuesday and Wednesday prices are also good, but you may want to prepare your budget if booking during the weekend, as data shows that is when prices are generally at their highest.
What are the cheapest days to fly?
Frequent travelers may already know this, but earlier in the week can be the cheapest time to fly. In 2021, flights departing on a Monday were generally the cheapest of the week, whereas you may pay a premium for weekend flights when demand is usually high. On average, tickets were most expensive for Saturday departures, so if you need to fly out on a weekend, you might look for deals ahead of time.
How far in advance can you book a flight?
Trying to figure out how early you should book your flight? It's possible to start comparing international airfares on Travelocity up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 0-2 weeks prior to their travel dates.*According to flight demand on Travelocity.com from January to December 2021. Savings are subject to change based on departure location, date and destination.

Discover our best United flight from Denver DEN to Sydney SYD 

To find the best deals on flights to Denver from Sydney with United, just enter your travel dates, filter by United, and hit search. You’ll find flights to choose from and can sort by price, flight duration, and arrival or departure time.  

 

Return flights from Denver DEN to Sydney SYD with United 

If you’re planning a round trip, booking return flights with United is usually the most cost-effective option. With airfares ranging from $1,365 to $1,365, it’s easy to find a flight that suits your budget. Prices and availability subject to change. Additional terms may apply. 

 

Book one-way United flights from Denver DEN to Sydney SYD 

A one-way ticket gives you much greater flexibility—allowing you to choose your return date, destination, and time whenever you’re ready. By booking in advance you can find great deals on one-way tickets too. Right now, a one-way United flight from Denver to Sydney costs from $944. Prices and availability subject to change. Additional terms may apply. 

 

The easy way to find cheap flights to Sydney SYD from  Denver DEN with United 

To find a cheap United flight from Denver DEN to Sydney SYD, sort your search results by price or filter by budget. Thanks to Travelocity’s Price Match Promise, if you find a better airfare deal anywhere else within 24 hours, we’ll credit or refund the difference. 

 

How to find our best airfare deals on United flights from Denver DEN to Sydney SYD 

If you’re looking for cheap flights, it helps to be flexible when it comes to your travel dates. You’ll usually find lower cost tickets when you travel during quieter months such as February, or if you book a flight with a stopover. 

 

Find nonstop flights from Denver DEN to Sydney SYD with United 

If you’re keen to be on Sydney soil fast, don’t waste time with a stopover—filter your search results to show direct United flights only. The journey takes around hour(s) min(s) – so you’ll be there before you know it. 

 

Flexible airline tickets for United flights from Denver DEN to Sydney SYD 

Make sure you’re not out of pocket if plans change by choosing a flexible ticket with penalty-free amendment and cancellation options. Use our ‘no change fee’ filter to see which flights have this option.  

 

There are a lot of reasons to book your flights to Sydney SYD from  Denver DEN with United on Travelocity 

At Travelocity our vast and up-to-the-minute inventory puts all of our best flight deals in one place. So, whether you’re traveling on business or jetting off with friends and family, you can trust Travelocity to get you there.

United Airports
Hop on a(n) United flight today by flying to many destinations out of these domestic and international airports:
Airport code
Country
Airport name
Number of flights
ORDUSAO'Hare Intl.227
DENUSADenver Intl.226
IAHUSAGeorge Bush Intercontinental136
IADUSAWashington Dulles Intl.100
SFOUSASan Francisco Intl.64
LAXUSALos Angeles Intl.23
EWRUSALiberty Intl.20
FRADEUFrankfurt Intl.19
NRTJPNNarita Intl.19
PEKCHNCapital Intl.16

Travelers ❤️ these 🏨 after their flight to Sydney

Rydges Sydney Airport Hotel

Rydges Sydney Airport Hotel

4 out of 5
8 Arrival Court Mascot NSW
This smoke-free hotel's 2 restaurants, 2 bars/lounges, and 24-hour gym are some of the featured amenities. Traveling on business? Take advantage of the 24-hour ...
8.6/10 Excellent! (3,045 reviews)
Clean room and self checkin

Reviewed on Jan 22, 2026

Rydges Sydney Airport Hotel
Silkari Urban CKS Sydney Airport Hotel

Silkari Urban CKS Sydney Airport Hotel

4 out of 5
35 Levey Street Wolli Creek NSW
A restaurant, self parking, and a 24-hour front desk are among this hotel's amenities. WiFi in public areas is free. A business center, express check-out, and ...
7.8/10 Good! (1,131 reviews)
Only half breakfast included if your booking says breakfast included. You have to pay more to access the hot menu. Airport transfers ($13) are good & on time.

Reviewed on Jan 19, 2026

Silkari Urban CKS Sydney Airport Hotel
ibis budget Sydney Airport

ibis budget Sydney Airport

2.5 out of 5
5 Ross Smith Avenue Mascot NSW
This hotel features free WiFi in public areas, laundry facilities, and self parking. Express check-out, a computer station, and luggage storage are also on ...
7.2/10 Good! (2,393 reviews)
Due to our flight being cancelled at last minute, we then had to look for a room near to the airport. Price was cheap for 1 night and it was 5 mins from airport. Rooms are basic but clean and it's all you need to get your head down . We went next door to the Mantra for drinks and breakfast the next ...

Reviewed on Jan 20, 2026

ibis budget Sydney Airport
Lowest nightly price found within the past 24 hours based on a 1 night stay for 2 adults. Prices and availability subject to change. Additional terms may apply.

Explore More Ways to Travel with Travelocity

*Price based on the lowest price found within past 24 hours and based upon one night stay for two adults over the next thirty days. Prices and availability subject to change. Additional terms may apply.