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Cheap flights from St. Louis to Sydney from $903

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 26/11. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SYD
26 Nov — 3 Dec1
1 adult

Cheap flight deals from St. Louis to Sydney

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) 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 21 November 2024.

Round-trip from

$1,853

One-way from

$903

Popular in

December

Cheapest in

March
United Airlines
  • United Airlines
  • 14/3-22/3
  • 4 total stops
  • 50h 54m total
  • St. Louis to Sydney
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26/11
  • 26/11
  • 2 total stops
  • 52h 28m total
  • St. Louis to Sydney
Search Deals
High demand for flights, 20% potential price rise
Search Deals
Best time to find cheap flights, 13% potential price drop
Search Deals

Find flight deals from St. Louis to Sydney

Cheapest flights from St. Louis to Sydney
Explore the most affordable flight options available from St. Louis to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 November 2024.

Thu 12/1206:30STL - SYD
2 stops33h 05mDelta
Fri 27/1211:05SYD - STL
2 stops27h 30mDelta
Deal found 19/11$2,796
Tue 3/1215:50STL - SYD
2 stops48h 45mAir Canada
Mon 16/1211:20SYD - STL
2 stops44h 46mAir Canada
Deal found 20/11$2,830
Sun 24/1111:05STL - SYD
2 stops28h 40mAir New Zealand
Tue 26/1112:10SYD - STL
1 stop21h 46mAir New Zealand
Deal found 20/11$2,991
Thu 21/1119:00STL - SYD
1 stop21h 15mUnited Airlines
Thu 28/1112:10SYD - STL
1 stop21h 46mUnited Airlines
Deal found 20/11$3,315
Sun 24/1113:39STL - SYD
3 stops26h 06mMultiple Airlines
Tue 26/1111:45SYD - STL
3 stops28h 45mMultiple Airlines
Deal found 20/11$3,378
Sun 24/1106:17STL - SYD
1 stop33h 43mQantas Airways
Tue 26/1111:15SYD - STL
1 stop29h 42mQantas Airways
Deal found 20/11$3,747

Find flights from St. Louis to Sydney within your budget

Customise your flight search to find flights from St. Louis 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 719,399 searches. Data last updated 21 November 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Fri 14/3

15:35-09:05

2 stops25h 30m

Sydney Kingsford Smith

Sat 22/3

12:10-21:34

2 stops25h 24m

$1,853

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Fri 25/4

15:50-07:20

2 stops48h 30m

Sydney Kingsford Smith

Wed 7/5

09:20-15:21

2 stops45h 01m

$1,863

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Fri 25/4

06:30-06:35

2 stops33h 05m

Sydney Kingsford Smith

Wed 7/5

09:25-18:01

2 stops23h 36m

$1,867

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Fri 14/3

19:04-09:00

1 stop21h 56m

Sydney Kingsford Smith

Sat 22/3

11:15-23:50

1 stop28h 35m

$2,669

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sat 4/1

17:29-14:20

2 stops27h 51m

Sydney Kingsford Smith

Sat 11/1

14:30-10:48

2 stops37h 18m

$2,852

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Tue 3/12

07:00-10:25

2 stops34h 25m

Sydney Kingsford Smith

Mon 16/12

12:10-17:56

1 stop22h 46m

$3,127

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sun 23/3

19:04-20:50

2 stops33h 46m

Sydney Kingsford Smith

Thu 17/4

07:35-22:54

2 stops30h 19m

$5,453

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Fri 14/3

07:20-09:25

3 stops58h 05m

Sydney Kingsford Smith

Sat 22/3

11:40-23:38

3 stops51h 58m

$5,653

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Mon 10/3

13:05-10:30

2 stops29h 25m

Sydney Kingsford Smith

Wed 19/3

21:45-12:12

2 stops30h 27m

$7,924

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Tue 26/11

22:17-19:45

2 stops52h 28m

$903

Flights are sorted by cheapest return flights first.

Deals found on 19/11

Showing 1-10 of 13 results
1
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Best time to book a flight from St. Louis to Sydney

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

Travel insights for flights from St. Louis to Sydney

Get recent, data-driven insights about flights from St. Louis to Sydney including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from St. Louis to Sydney?

Use this chart to determine the optimal time to book a return flight from St. Louis to Sydney. Price data was last updated on 15 November 2024.

To ensure you get the cheapest price possible for a flight from St. Louis to Sydney, you should look to book at least 60 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.

What is the cheapest month to book a flight from St. Louis to Sydney?

Currently, May is the cheapest month in which you can book a flight from St. Louis to Sydney (average of $129). Flying from St. Louis to Sydney in October is currently the most expensive (average of $171). 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.

Rainfall in Sydney by month

Plan your trip to Sydney by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Sydney ranges from 50.0 - 130.0 inches per month. March is typically the wettest month, when rainfall can reach 130.0 mm. September is typically the driest time to visit Sydney when rainfall is around 50.0 mm.

Temperature in Sydney by month

Plan your trip to Sydney by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Sydney, use this chart to help with planning. For those seeking warmer temperatures, January is the ideal time of year to visit, when temperatures reach an average of 22.0 C. Travellers hoping to avoid the cold should look outside of July, when temperatures are typically at their lowest (around 11.0 C).

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 21 November 2024.
ANA
8.4
Very Good
833 reviews
Check prices

Crew

8.7

Comfort

8.2

Overall

8.4

Entertainment

7.9

Food

7.7

Boarding

8.6

Reviews

1 / 10

I hate the assigned seat from Japan to Chicago it was a long flight and I was assigned in the most uncomfortable area, the worst is I can't check in online makes it more worse.

ANA
8.4
Very Good
833 reviews
ANA
8.4
Very Good
833 reviews
Check prices

Crew

8.7

Comfort

8.2

Overall

8.4

Entertainment

7.9

Food

7.7

Boarding

8.6

Reviews

1 / 10

I hate the assigned seat from Japan to Chicago it was a long flight and I was assigned in the most uncomfortable area, the worst is I can't check in online makes it more worse.

Air New Zealand
8.1
Very Good
531 reviews
ANA
8.4
Very Good
833 reviews
Check prices

Crew

8.7

Comfort

8.2

Overall

8.4

Entertainment

7.9

Food

7.7

Boarding

8.6

Reviews

1 / 10

I hate the assigned seat from Japan to Chicago it was a long flight and I was assigned in the most uncomfortable area, the worst is I can't check in online makes it more worse.

Delta
8.0
Very Good
8,756 reviews
ANA
8.4
Very Good
833 reviews
Check prices

Crew

8.7

Comfort

8.2

Overall

8.4

Entertainment

7.9

Food

7.7

Boarding

8.6

Reviews

1 / 10

I hate the assigned seat from Japan to Chicago it was a long flight and I was assigned in the most uncomfortable area, the worst is I can't check in online makes it more worse.

Qantas Airways
7.6
Good
820 reviews
ANA
8.4
Very Good
833 reviews
Check prices

Crew

8.7

Comfort

8.2

Overall

8.4

Entertainment

7.9

Food

7.7

Boarding

8.6

Reviews

1 / 10

I hate the assigned seat from Japan to Chicago it was a long flight and I was assigned in the most uncomfortable area, the worst is I can't check in online makes it more worse.

Cathay Pacific
7.6
Good
878 reviews
ANA
8.4
Very Good
833 reviews
Check prices

Crew

8.7

Comfort

8.2

Overall

8.4

Entertainment

7.9

Food

7.7

Boarding

8.6

Reviews

1 / 10

I hate the assigned seat from Japan to Chicago it was a long flight and I was assigned in the most uncomfortable area, the worst is I can't check in online makes it more worse.

Related info for your journey

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

  • What are the cheapest airlines flying from St. Louis to Sydney round-trip?

    Our cheapest airline available from St. Louis to Sydney is United Airlines. Our recent data shows that you can find tickets from as low as $1,853 on this airline. Additional options worth looking into are Air Canada and Delta, starting at $1,863 and $1,867 round-trip. United Airlines is 19% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from St. Louis to Sydney one-way?

    The cheapest airline one-way is Qantas Airways, with whom users have recently found tickets for as low as $1,691. However, be on the lookout for offers from Delta and United Airlines, as they are both options that can get you from St. Louis to Sydney for a low price.

  • Can I find deals for flights from St. Louis to Sydney that include hotel bookings?

    Yes. In addition to deals on St. Louis to Sydney flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Sydney?

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

  • Can I find deals for business class flights from St. Louis to Sydney?

    Yes. Cheapflights offers flight deals from St. Louis 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 St. Louis to Sydney?

    Currently, May is the cheapest month in which you can book a flight from St. Louis to Sydney (average of $129). Flying from St. Louis to Sydney in October is currently the most expensive (average of $171). 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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for St. Louis to Sydney

See prices for flight routes from nearby airports that may be better suited for you.
Kansas City to Sydney flights

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Why should you use Cheapflights to find cheap flight tickets from St. Louis to Sydney?

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Can Cheapflights find flights from St. Louis to Sydney with no change fees?

Need flexible booking options for your flight to Sydney from St. Louis? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from St. Louis to Sydney become cheaper?

Yes! Start tracking prices for St. Louis to Sydney flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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