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$527+ Cheap flights from Knoxville (TYS) to Sydney (SYD)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/6. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — SYD
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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Cheap flight deals from Knoxville to Sydney

Discover tips and strategies to find the most affordable flight options for your journey from Knoxville (TYS) to Sydney (SYD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 17, 2025.

Round-trip from

$983
(United Airlines)

One-way from

$527
(United Airlines)

Popular in

October

Cheapest in

July

Average price

$931
From Knoxville McGhee Tyson to Sydney Kingsford Smith
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One-way flight from Knoxville McGhee Tyson to Sydney Kingsford Smith
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Highest demand for flights based on searches. 6% potential increase in price ($90 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($70 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Knoxville to Sydney

Cheapest flights from Knoxville to Sydney
Explore the most affordable flight options available from Knoxville to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2025.

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 12/74:59 pmTYS - SYD
1 stop22h 01mUnited Airlines
Wed 12/1711:50 amSYD - TYS
1 stop27h 54mUnited Airlines
Deal found 9/16$983
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 12/711:42 amTYS - SYD
1 stop27h 18mUnited Airlines
Thu 12/1811:20 amSYD - TYS
2 stops28h 22mUnited Airlines
Deal found 9/16$987
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 12/71:52 pmTYS - SYD
2 stops27h 13mUnited Airlines
Tue 12/2311:20 amSYD - TYS
2 stops43h 40mUnited Airlines
Deal found 9/16$1,002
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/214:37 pmTYS - SYD
1 stop24h 18mAmerican Airlines
Tue 9/239:30 pmSYD - TYS
2 stops26h 26mAmerican Airlines
Deal found 9/17$1,127
This American Airlines deal was found by Cheapflights users on 9/15. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/192:07 pmTYS - SYD
2 stops26h 58mAmerican Airlines
Sun 9/219:30 pmSYD - TYS
2 stops26h 26mAmerican Airlines
Deal found 9/15$1,176
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 12/79:10 amTYS - SYD
1 stop29h 50mUnited Airlines
Sun 12/2111:50 amSYD - TYS
1 stop27h 52mUnited Airlines
Deal found 9/16$1,223
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 12/104:30 pmTYS - SYD
2 stops24h 45mUnited Airlines
Wed 12/1711:20 amSYD - TYS
2 stops22h 49mUnited Airlines
Deal found 9/16$1,227
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 12/104:30 pmTYS - SYD
2 stops24h 45mUnited Airlines
Tue 12/2311:20 amSYD - TYS
2 stops38h 57mUnited Airlines
Deal found 9/16$1,242
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 12/1111:42 amTYS - SYD
2 stops29h 33mUnited Airlines
Mon 12/2211:50 amSYD - TYS
2 stops26h 49mUnited Airlines
Deal found 9/16$1,245
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 12/1111:42 amTYS - SYD
2 stops29h 33mUnited Airlines
Tue 12/2311:20 amSYD - TYS
2 stops38h 57mUnited Airlines
Deal found 9/16$1,260
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 12/3111:58 amTYS - SYD
2 stops26h 22mUnited Airlines
Tue 1/1311:50 amSYD - TYS
1 stop24h 00mUnited Airlines
Deal found 9/17$1,263
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 12/71:52 pmTYS - SYD
2 stops27h 13mUnited Airlines
Sat 12/2012:10 pmSYD - TYS
2 stops39h 01mUnited Airlines
Deal found 9/16$1,265

Cheapflights Fare Finder

 
Customize your flight search to find flights from Knoxville 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 2,558,603 searches. Data last updated September 17, 2025.
Use the filters below to find and compare flights from Knoxville to Sydney that are best for you.

Fly from

Knoxville

Fly to

Sydney

Route

Depart

Return

Price

KnoxvilleSydney

TYS - SYD

TYSSYD

Knoxville McGhee Tyson

Sun 12/7

9:10 am-7:00 am

1 stop29h 50m

Sydney Kingsford Smith

Mon 12/22

11:50 am-6:10 pm

1 stop22h 20m

$983

KnoxvilleSydney

TYS - SYD

TYSSYD

Knoxville McGhee Tyson

Sat 2/7

11:40 am-7:00 am

1 stop27h 20m

Sydney Kingsford Smith

Mon 2/16

11:50 am-5:37 pm

1 stop21h 47m

$983

KnoxvilleSydney

TYS - SYD

TYSSYD

Knoxville McGhee Tyson

Tue 2/3

4:25 pm-9:15 am

2 stops24h 50m

Sydney Kingsford Smith

Tue 3/3

11:50 am-7:34 pm

1 stop23h 44m

$983

KnoxvilleSydney

TYS - SYD

TYSSYD

Knoxville McGhee Tyson

Fri 2/6

11:40 am-6:20 am

2 stops26h 40m

Sydney Kingsford Smith

Mon 2/16

11:50 am-9:07 pm

2 stops25h 17m

$987

KnoxvilleSydney

TYS - SYD

TYSSYD

Knoxville McGhee Tyson

Tue 12/9

4:59 pm-7:00 am

1 stop22h 01m

Sydney Kingsford Smith

Wed 12/17

11:20 am-11:44 pm

2 stops28h 24m

$987

KnoxvilleSydney

TYS - SYD

TYSSYD

Knoxville McGhee Tyson

Tue 12/9

11:42 am-9:15 am

2 stops29h 33m

Sydney Kingsford Smith

Thu 12/18

11:20 am-7:50 pm

2 stops24h 30m

$987

KnoxvilleSydney

TYS - SYD

TYSSYD

Knoxville McGhee Tyson

Sat 2/21

1:53 pm-9:05 am

2 stops27h 12m

$527

KnoxvilleSydney

TYS - SYD

TYSSYD

Knoxville McGhee Tyson

Fri 2/6

6:45 am-9:15 am

2 stops34h 30m

$527

KnoxvilleSydney

TYS - SYD

TYSSYD

Knoxville McGhee Tyson

Sat 2/21

4:33 pm-6:55 am

1 stop22h 22m

$774

KnoxvilleSydney

TYS - SYD

TYSSYD

Knoxville McGhee Tyson

Sat 2/21

9:24 pm-7:45 pm

3 stops54h 21m

$1,080

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/16

Showing 1-10 of 11 results
1
2

Best time to book a flight from Knoxville to Sydney

Have a flexible travel schedule? Discover the best time to fly to Sydney from Knoxville with our price prediction graph.
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 Knoxville to Sydney

What is the cheapest month to book a flight from Knoxville to Sydney?

Currently, March is the cheapest month in which you can book a flight from Knoxville to Sydney (average of $1,032). Flying from Knoxville to Sydney in December is currently the most expensive (average of $1,627). 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.

Reviews of airlines servicing Sydney

Get insights into the airlines that provide service to Sydney. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Sydney. Reviews last updated September 17, 2025.
See what other customers who have flown with United Airlines and American Airlines from Knoxville to Sydney have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,926 reviews

Overall

7.4

Comfort

7.3

Crew

8.1

Food

6.6

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
United Airlines
7.4
Good
8,926 reviews
United Airlines
7.4
Good
8,926 reviews

Overall

7.4

Comfort

7.3

Crew

8.1

Food

6.6

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
American Airlines
7.2
Good
10,000 reviews
United Airlines
7.4
Good
8,926 reviews

Overall

7.4

Comfort

7.3

Crew

8.1

Food

6.6

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Related info for your journey

Find useful and relevant information for your journey from Knoxville to Sydney. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Knoxville to Sydney?

    A quick flight from Knoxville to Sydney can take about 29h 50m. United Airlines provides one of the quickest options available for as low as $983. There are 9343 mi between Knoxville and Sydney.

  • What are the cheapest airlines flying from Knoxville to Sydney round-trip?

    Cheapflights users have booked flights from Knoxville to Sydney round-trip from $825. Another airline that can offer you cheap pricing is American Airlines. Users have found that United Airlines is 38% cheaper than the other options available to this destination.

  • Can I find deals for flights from Knoxville to Sydney that include hotel bookings?

    Yes. In addition to deals on Knoxville to Sydney flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Knoxville to Sydney?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Knoxville to Sydney.

  • Can I find deals for business class flights from Knoxville to Sydney?

    Yes. Cheapflights offers flight deals from Knoxville to Sydney by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Knoxville to Sydney?

    Currently, March is the cheapest month in which you can book a flight from Knoxville to Sydney (average of $1,032). Flying from Knoxville to Sydney in December is currently the most expensive (average of $1,627). 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.

See more FAQs

Traveling to a place near Sydney?

Book flights to Sydney if you plan to visit one of these locations
Parramatta
Wollongong
Manly
Coogee

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Alternative routes for Knoxville to Sydney

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Top 2 airlines flying from Knoxville to Sydney

Discover the top 2 airlines that operate flights from Knoxville 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 2,558,603 searches. Data last updated September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$825Average$1,205FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$901Average$1,114FlexibilityNo cancel feeOn-time71%

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