$496+ Cheap flights from Colorado to Sydney (SYD)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/20. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — SYD
Oct 21 — Oct 281
Round-trip
1 adult, Economy
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Find cheap flights from Colorado to Sydney with Cheapflights
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Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Cheapest flights from Colorado to SydneyExplore the most affordable flight options available from Colorado to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 21, 2026.
Explore the most affordable flight options available from Colorado to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 21, 2026.
This Trip.com deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/269:00 am -
2 stops34h 35m
Mon 11/92:00 pm -
3 stops46h 10m
Deal found 9/19![Multiple Airlines logo]()
$1,021
This Trip.com deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/21:10 pm -
2 stops29h 25m
Mon 11/92:00 pm -
3 stops40h 42m
Deal found 9/18![Multiple Airlines logo]()
$1,028
This Trip.com deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/279:10 am -
1 stop30h 50m
Wed 11/1811:10 am -
1 stop22h 01m
Deal found 9/19![Multiple Airlines logo]()
$1,111
This Trip.com deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/201:10 pm -
1 stop25h 20m
Tue 10/2711:10 am -
1 stop21h 01m
Deal found 9/20![Multiple Airlines logo]()
$1,127
This oojo deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/264:05 pm -
2 stops25h 30m
Wed 11/119:55 am -
2 stops26h 05m
Deal found 9/17![Air New Zealand logo]()
$1,138
This FlightHub deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/2311:32 am -
2 stops31h 18m
Wed 1/272:05 pm -
2 stops23h 25m
Deal found 9/16![Air New Zealand logo]()
$1,139
This Trip.com deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/39:10 am -
1 stop27h 15m
Tue 11/1011:10 am -
1 stop24h 25m
Deal found 9/19![Multiple Airlines logo]()
$1,141
This oojo deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/219:18 pm -
2 stops41h 17m
Mon 12/711:50 am -
2 stops22h 20m
Deal found 9/16![Air New Zealand logo]()
$1,147
This United Airlines deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/175:05 pm -
2 stops22h 15m
Wed 12/169:15 am -
2 stops23h 19m
Deal found 9/18![United Airlines logo]()
$1,299
This United Airlines deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/171:20 pm -
2 stops25h 45m
Tue 12/151:20 pm -
2 stops21h 04m
Deal found 9/17![United Airlines logo]()
$1,301
This United Airlines deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/25:05 pm -
2 stops22h 15m
Mon 11/99:15 am -
1 stop20h 04m
Deal found 9/18![United Airlines logo]()
$1,309
This United Airlines deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1812:05 pm -
2 stops27h 15m
Wed 12/911:50 am -
2 stops28h 13m
Deal found 9/17![United Airlines logo]()
$1,314
Best flights from Colorado to SydneyDiscover carefully curated flight deals from Colorado to Sydney that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 21, 2026.
Discover carefully curated flight deals from Colorado to Sydney that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 21, 2026.
This United Airlines deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/17:40 am -
2 stops31h 25m
Tue 12/811:20 am -
2 stops23h 59m
Deal found 9/18![United Airlines logo]()
$1,314
This Delta deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/81:17 pm -
2 stops25h 13m
Wed 12/2310:40 am -
1 stop24h 45m
Deal found 9/21![Delta logo]()
$1,515
This United Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1811:34 am -
2 stops27h 31m
Wed 12/911:50 am -
2 stops23h 29m
Deal found 9/16![United Airlines logo]()
$1,314
This United Airlines deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/235:10 pm -
2 stops21h 55m
Thu 12/1711:50 am -
2 stops22h 40m
Deal found 9/17![United Airlines logo]()
$1,351
This Delta deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/512:52 pm -
1 stop25h 38m
Mon 12/2810:40 am -
1 stop18h 52m
Deal found 9/19![Delta logo]()
$1,560
This China Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/16:35 pm -
3 stops48h 10m
Thu 10/1510:10 pm -
2 stops39h 10m
Deal found 9/16![Multiple Airlines logo]()
$3,255
This United Airlines deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/175:05 pm -
2 stops22h 15m
Tue 12/159:15 am -
1 stop20h 06m
Deal found 9/20![United Airlines logo]()
$1,404
This British Airways deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/172:27 pm -
3 stops46h 28m
Tue 12/14:20 pm -
2 stops40h 50m
Deal found 9/16![British Airways logo]()
$3,492
This Delta deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/11:40 pm -
2 stops25h 10m
Thu 10/1510:15 am -
2 stops26h 19m
Deal found 9/17![Delta logo]()
$1,615
This United Airlines deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/215:05 pm -
2 stops22h 00m
Mon 12/149:15 am -
1 stop20h 06m
Deal found 9/20![United Airlines logo]()
$1,404
This United Airlines deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/175:05 pm -
2 stops22h 15m
Wed 12/169:15 am -
2 stops23h 19m
Deal found 9/20![United Airlines logo]()
$1,404
This Delta deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/281:19 pm -
1 stop25h 11m
Fri 12/1810:40 am -
1 stop31h 22m
Deal found 9/20![Delta logo]()
$1,707
This United Airlines deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/221:20 pm -
2 stops26h 00m
Tue 12/159:15 am -
1 stop20h 06m
Deal found 9/20![United Airlines logo]()
$1,404
This United Airlines deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/191:20 pm -
2 stops25h 45m
Mon 12/149:15 am -
1 stop20h 06m
Deal found 9/19![United Airlines logo]()
$1,409
This United Airlines deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/177:35 am -
1 stop29h 25m
Sun 12/139:15 am -
1 stop20h 06m
Deal found 9/20![United Airlines logo]()
$1,454
This United Airlines deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/87:35 am -
1 stop29h 25m
Thu 11/129:10 am -
1 stop20h 09m
Deal found 9/20![United Airlines logo]()
$1,529
This British Airways deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1112:24 pm -
3 stops48h 31m
Sun 12/64:20 pm -
2 stops40h 50m
Deal found 9/18![British Airways logo]()
$3,546
This United Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/287:35 am -
1 stop30h 25m
Sun 11/19:15 am -
1 stop20h 04m
Deal found 9/16![United Airlines logo]()
$1,529
This United Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/217:12 pm -
1 stop19h 48m
Sun 10/2510:30 am -
1 stop20h 06m
Deal found 9/16![United Airlines logo]()
$1,529
This United Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/79:52 am -
1 stop29h 13m
Wed 2/2411:50 am -
1 stop20h 42m
Deal found 9/16![United Airlines logo]()
$1,659
This United Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/1111:15 am -
1 stop28h 05m
Wed 2/2411:50 am -
1 stop22h 38m
Deal found 9/16![United Airlines logo]()
$1,709
This United Airlines deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/171:32 pm -
1 stop25h 33m
Fri 1/89:20 am -
1 stop22h 55m
Deal found 9/21![United Airlines logo]()
$2,785
Last-minute flights from Colorado to SydneyDiscover last-minute flight deals from Colorado to Sydney. Data last updated September 21, 2026 and is based on user searches.
Discover last-minute flight deals from Colorado to Sydney. Data last updated September 21, 2026 and is based on user searches.
This Trip.com deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/221:10 pm -
1 stop25h 55m
Tue 9/299:10 am -
1 stop24h 22m
Deal found 9/17![Multiple Airlines logo]()
$1,218
This Cathay Pacific deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/245:13 pm -
3 stops46h 17m
Thu 10/19:55 pm -
2 stops41h 00m
Deal found 9/17![Multiple Airlines logo]()
$2,251
This lastminute.com deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/245:13 pm -
1 stop21h 42m
Thu 10/112:00 pm -
1 stop20h 43m
Deal found 9/17![Qantas Airways logo]()
$3,521
This Trip.com deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/201:10 pm -
1 stop25h 20m
Tue 10/2711:10 am -
1 stop21h 01m
Deal found 9/20![Multiple Airlines logo]()
$1,127
This United Airlines deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/217:12 pm -
1 stop19h 48m
Sun 10/2510:30 am -
1 stop20h 06m
Deal found 9/20![United Airlines logo]()
$1,529
This Trip.com deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/269:00 am -
2 stops34h 35m
Mon 11/92:00 pm -
3 stops46h 10m
Deal found 9/19![Multiple Airlines logo]()
$1,021
This oojo deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/264:05 pm -
2 stops25h 30m
Wed 11/119:55 am -
2 stops26h 05m
Deal found 9/17![Air New Zealand logo]()
$1,138
This Trip.com deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/279:10 am -
1 stop30h 50m
Wed 11/1811:10 am -
1 stop22h 01m
Deal found 9/19![Multiple Airlines logo]()
$1,111
This oojo deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/281:30 pm -
2 stops26h 05m
Tue 11/37:30 am -
2 stops28h 26m
Deal found 9/16![Air New Zealand logo]()
$1,206
This United Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/287:35 am -
1 stop30h 25m
Sun 11/19:15 am -
1 stop20h 04m
Deal found 9/16![United Airlines logo]()
$1,529
This British Airways deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/285:21 pm -
3 stops44h 34m
Sun 11/14:20 pm -
3 stops48h 41m
Deal found 9/18![British Airways logo]()
$3,958
One-way flights from Colorado to SydneySearch for one-way flight options from Colorado to Sydney. Find affordable one-way fares based on user searches. Data last updated September 21, 2026.
Search for one-way flight options from Colorado to Sydney. Find affordable one-way fares based on user searches. Data last updated September 21, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2010:55 pm -
1 stop39h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/19![Multiple Airlines logo]()
$496
This Kiwi.com deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/302:22 pm -
1 stop22h 03m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/20![Multiple Airlines logo]()
$499
This Kiwi.com deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/311:10 pm -
1 stop24h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Multiple Airlines logo]()
$506
This Kiwi.com deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/101:10 pm -
1 stop23h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![Multiple Airlines logo]()
$509
This Kiwi.com deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/22:22 pm -
1 stop22h 03m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![Multiple Airlines logo]()
$511
This Kiwi.com deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/12:22 pm -
2 stops35h 53m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Multiple Airlines logo]()
$519
This Kiwi.com deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/292:22 pm -
1 stop22h 03m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/20![Multiple Airlines logo]()
$539
This United Airlines deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/47:35 am -
1 stop29h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/19![United Airlines logo]()
$758
This United Airlines deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/216:25 pm -
2 stops44h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/21![United Airlines logo]()
$778
This Cathay Pacific deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/45:17 pm -
3 stops45h 18m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/19![Multiple Airlines logo]()
$826
This United Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/2911:19 am -
2 stops28h 01m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![United Airlines logo]()
$944
This Cathay Pacific deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cathay Pacific is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/215:15 pm -
3 stops47h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/21![Multiple Airlines logo]()
$1,145
Find flight deals from Colorado to Sydney
Keep the following information in mind while searching for Colorado to Sydney flight deals. Data was last updated September 21, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,021 (Trip.com) |
One-way from | $496 (Kiwi.com) |
Popular in | December |
Cheapest in | May |
Average price | $1,185 |
Cheapflights Fare Finder
Customize your flight search to find flights from Colorado to Sydney that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 21, 2026.
Use the filters below to find and compare flights from Colorado to Sydney that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
DenverSydney
DEN Denver Intl - SYD Sydney Kingsford Smith
DENSYD
Denver Intl
Tue 11/10
1:10 pm-6:25 am
1 stop23h 15m
Sydney Kingsford Smith
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$509
DenverSydney
DEN Denver Intl - SYD Sydney Kingsford Smith
DENSYD
Denver Intl
Mon 3/1
3:45 pm-8:15 pm
3 stops58h 30m
Sydney Kingsford Smith
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$586
DenverSydney
DEN Denver Intl - SYD Sydney Kingsford Smith
DENSYD
Denver Intl
Mon 11/30
10:29 pm-6:25 am
1 stop37h 56m
Sydney Kingsford Smith
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$603
DenverSydney
DEN Denver Intl - SYD Sydney Kingsford Smith
DENSYD
Denver Intl
Tue 2/2
7:00 am-6:25 am
2 stops29h 25m
Sydney Kingsford Smith
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$747
DenverSydney
DEN Denver Intl - SYD Sydney Kingsford Smith
DENSYD
Denver Intl
Sat 11/21
2:20 pm-6:25 am
1 stop22h 05m
Sydney Kingsford Smith
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$748
DenverSydney
DEN Denver Intl - SYD Sydney Kingsford Smith
DENSYD
Denver Intl
Fri 10/16
1:43 pm-9:00 am
3 stops50h 17m
Sydney Kingsford Smith
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$778
DenverSydney
DEN Denver Intl - SYD Sydney Kingsford Smith
DENSYD
Denver Intl
Sat 12/26
6:25 am-6:25 am
1 stop30h 00m
Sydney Kingsford Smith
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$781
Colorado SpringsSydney
COS Colorado Springs - SYD Sydney Kingsford Smith
COSSYD
Colorado Springs
Wed 11/4
5:17 pm-8:35 am
3 stops45h 18m
Sydney Kingsford Smith
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$826
Quickest round-trip
DenverSydney
DEN Denver Intl - SYD Sydney Kingsford Smith
DENSYD
Denver Intl
Tue 12/1
7:00 pm-9:35 am
1 stop20h 35m
Sydney Kingsford Smith
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$827
Colorado SpringsSydney
COS Colorado Springs - SYD Sydney Kingsford Smith
COSSYD
Colorado Springs
Tue 12/29
11:19 am-9:20 am
2 stops28h 01m
Sydney Kingsford Smith
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$944
Showing 1-10 of 35 resultsSorted by cheapest first
Best time to book a flight from Colorado to Sydney
Have a flexible travel schedule? Discover the best time to fly to Sydney from Colorado with our price prediction graph.
DEN-SYD
COS-SYD
ASE-SYD
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Colorado to Sydney
USCO-SYD
DEN-SYD
COS-SYD
ASE-SYD
What is the cheapest month to book a flight from Colorado to Sydney?
Currently, May is the cheapest month in which you can book a flight from Colorado to Sydney (average of $1,180). Flying from Colorado to Sydney in December is currently the most expensive (average of $1,797). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
How much does it cost to fly round-trip from Colorado to Sydney?
Airfare is below average for this route at the moment.
Colorado to Sydney flights typically cost between $1,102 and $1,524 in October.The cheapest round-trip price found within the last 5 days was $1,021 on Multiple Airlines (Oct 26-Nov 9).
How far ahead should I book a flight from Colorado to Sydney?
To ensure you get the cheapest price possible for a flight from Colorado to Sydney, you should look to book at least 13 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
Related info for your journey
Find useful and relevant information for your journey from Colorado to Sydney. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Sydney?
Book flights to Sydney if you plan to visit one of these locationsParramatta
Wollongong
Coogee
Manly
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Alternative routes for Colorado to Sydney
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Complete your trip
Complete your trip to Sydney by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Colorado to Sydney by cabin class
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Colorado and Sydney flights
Browse other Colorado and Sydney flight options. Last updated on September 21, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Other flights to Sydney
Explore flights to Sydney departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 21, 2026.
Colorado to Sydney flights
Consider these flights traveling from Colorado to Sydney.
Top 7 airlines flying from Colorado to Sydney
Discover the top 7 airlines that operate flights from Colorado to Sydney. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 21, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$215 | Average$1,258 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$684 | Average$781 | FlexibilityNo cancel fee | On-time74% | |
| Cheapest$844 | Average$1,595 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$847 | Average$1,350 | FlexibilityNo cancel fee | On-time74% | |
| Cheapest$853 | Average$1,460 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$1,050 | Average$1,453 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$1,180 | Average$1,362 | FlexibilityNo cancel fee | On-time78% |