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

Our cheapest airline available from St. Louis to Sydney is Air Canada. Our recent data shows that you can find tickets from as low as $1,959 on this airline. Additional options worth looking into are Fiji Airways and United Airlines, starting at $2,226 and $2,550 round-trip. Air Canada is 17% cheaper than the average price of flights available within the next 90 days to this destination. Find deals

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

The cheapest airline one-way is Fiji Airways, with whom users have recently found tickets for as low as $953. However, be on the lookout for offers from Air Canada and United Airlines, as they are both options that can get you from St. Louis to Sydney for a low price. Find deals

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

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 61 days in advance, which can save you up to 76% on flights from St. Louis to Sydney compared to booking the week you need them. Waiting 61 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $1,894. For sooner than that we have options available in the next 3 days from $2,761.

What is the cheapest month to fly from St. Louis to Sydney?

The best pricing can be found in the month of March. Prices to Sydney from St. Louis average $2,385. You can even find prices in March for less than $2,385, as users have found deals to Sydney from as low as $1,483. The month of December appears to be one of the more expensive times to travel to Sydney from St. Louis. Flying in the targeted month can save you up to 31%.

What is the cheapest time of day to fly from STL to SYD?

A simple way to save on the total cost of your ticket is to fly from St. Louis to Sydney at midday. If you’re flexible enough to do this you can expect to save up to 29% on your trip compared to booking a flight in the morning.

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.

$953+ Flights from St. Louis to Sydney

Cheap flight deals from St. Louis to Sydney

Round-trip from	$1,959
One-way from	$953
Popular in	December
Cheapest in	March
Average price	$3,143

Air Canada
1/2-25/5
4 total stops
93h 41m total
St. Louis to Sydney

Search Deals

Fiji Airways
25/2
2 total stops
25h 53m total
St. Louis to Sydney

Search Deals

High demand for flights, 4% potential price rise

Search Deals

Best time to find cheap flights, 3% potential price drop

Search Deals

Average for round-trip flights in December 2024

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 19 December 2024.

Mon 23/1215:50STL - SYD

2 stops48h 45mAir Canada

Mon 30/1211:20SYD - STL

2 stops44h 46mAir Canada

Deal found 18/12$2,558

Mon 30/1208:30STL - SYD

1 stop29h 30mUnited Airlines

Sun 12/112:10SYD - STL

1 stop23h 49mUnited Airlines

Deal found 18/12$3,266

Tue 31/1206:04STL - SYD

2 stops31h 46mDelta

Thu 9/111:05SYD - STL

2 stops39h 18mDelta

Deal found 18/12$3,367

Mon 23/1206:30STL - SYD

1 stop33h 30mQantas Airways

Mon 30/1211:15SYD - STL

1 stop29h 12mQantas Airways

Deal found 18/12$4,126

Tue 31/1211:36STL - SYD

2 stops31h 54mMultiple Airlines

Sat 11/114:30SYD - STL

2 stops25h 26mMultiple Airlines

Deal found 18/12$4,229

Thu 19/1208:50STL - SYD

1 stop31h 25mAir New Zealand

Thu 26/1213:55SYD - STL

2 stops27h 33mAir New Zealand

Deal found 18/12$4,586

Tue 31/1212:55STL - SYD

2 stops35h 45mLATAM Airlines

Sat 11/111:40SYD - STL

3 stops38h 43mLATAM Airlines

Deal found 18/12$6,063

Mon 30/1218:23STL - SYD

3 stops43h 32mBritish Airways

Sat 11/116:20SYD - STL

3 stops46h 49mBritish Airways

Deal found 18/12$27,461

Best flights from St. Louis to Sydney
Discover carefully curated flight deals from St. Louis to Sydney that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 19 December 2024.

Sat 1/215:50STL - SYD

2 stops48h 45mAir Canada

Sun 25/509:20SYD - STL

2 stops44h 56mAir Canada

Deal found 18/12$1,959

Sat 18/117:12STL - SYD

2 stops35h 38mMultiple Airlines

Fri 24/117:25SYD - STL

2 stops23h 34mMultiple Airlines

Deal found 18/12$2,145

Sat 14/619:55STL - SYD

2 stops24h 50mFiji Airways

Sat 28/613:45SYD - STL

2 stops21h 31mFiji Airways

Deal found 18/12$2,226

Sat 1/216:36STL - SYD

1 stop21h 24mUnited Airlines

Sun 25/510:20SYD - STL

1 stop29h 07mUnited Airlines

Deal found 18/12$2,550

Sun 12/114:49STL - SYD

3 stops35h 56mAlaska Airlines

Sat 18/121:40SYD - STL

2 stops33h 13mAlaska Airlines

Deal found 18/12$3,078

Sat 14/618:10STL - SYD

1 stop21h 45mQantas Airways

Sat 28/617:35SYD - STL

1 stop20h 23mQantas Airways

Deal found 18/12$3,099

Tue 31/1206:04STL - SYD

2 stops31h 46mDelta

Thu 9/111:05SYD - STL

2 stops39h 18mDelta

Deal found 18/12$3,367

Sun 12/107:00STL - SYD

1 stop33h 15mAir New Zealand

Sat 18/118:25SYD - STL

2 stops44h 55mAir New Zealand

Deal found 18/12$3,447

Sat 18/106:03STL - SYD

1 stop33h 57mAmerican Airlines

Fri 24/111:15SYD - STL

1 stop28h 48mAmerican Airlines

Deal found 18/12$4,542

Wed 1/110:16STL - SYD

2 stops32h 44mCathay Pacific

Wed 8/122:20SYD - STL

2 stops35h 00mCathay Pacific

Deal found 18/12$5,353

Tue 31/1212:55STL - SYD

2 stops35h 45mLATAM Airlines

Sat 11/111:40SYD - STL

3 stops38h 43mLATAM Airlines

Deal found 18/12$6,063

Sun 16/208:05STL - SYD

2 stops33h 25mANA

Thu 27/221:45SYD - STL

2 stops34h 26mANA

Deal found 18/12$9,558

Last-minute flights from St. Louis to Sydney
Discover last-minute flight deals from St. Louis to Sydney. Data last updated 19 December 2024 and is based on user searches.

Mon 23/1206:30STL - SYD

1 stop33h 30mQantas Airways

Mon 30/1211:15SYD - STL

1 stop29h 12mQantas Airways

Deal found 18/12$4,126

Fri 27/1206:00STL - SYD

1 stop32h 00mUnited Airlines

Sun 5/111:50SYD - STL

1 stop29h 09mUnited Airlines

Deal found 18/12$4,075

Fri 27/1206:25STL - SYD

2 stops44h 50mMultiple Airlines

Sun 5/111:40SYD - STL

3 stops38h 43mMultiple Airlines

Deal found 18/12$6,987

Mon 30/1218:23STL - SYD

3 stops43h 32mBritish Airways

Sat 11/116:20SYD - STL

3 stops46h 49mBritish Airways

Deal found 18/12$27,461

Tue 31/1206:04STL - SYD

2 stops31h 46mDelta

Thu 9/111:05SYD - STL

2 stops39h 18mDelta

Deal found 18/12$3,367

Tue 31/1212:55STL - SYD

2 stops35h 45mLATAM Airlines

Sat 11/111:40SYD - STL

3 stops38h 43mLATAM Airlines

Deal found 18/12$6,063

Wed 1/110:16STL - SYD

2 stops32h 44mCathay Pacific

Wed 8/122:20SYD - STL

2 stops35h 00mCathay Pacific

Deal found 18/12$5,353

Thu 2/117:29STL - SYD

2 stops27h 51mFiji Airways

Sun 12/115:20SYD - STL

2 stops24h 43mFiji Airways

Deal found 18/12$4,005

Sun 12/114:49STL - SYD

3 stops35h 56mAlaska Airlines

Sat 18/121:40SYD - STL

2 stops33h 13mAlaska Airlines

Deal found 18/12$3,078

Sun 12/107:00STL - SYD

1 stop33h 15mAir New Zealand

Sat 18/118:25SYD - STL

2 stops44h 55mAir New Zealand

Deal found 18/12$3,447

Sat 18/117:12STL - SYD

2 stops35h 38mMultiple Airlines

Fri 24/117:25SYD - STL

2 stops23h 34mMultiple Airlines

Deal found 18/12$2,145

Sat 18/106:03STL - SYD

1 stop33h 57mAmerican Airlines

Fri 24/111:15SYD - STL

1 stop28h 48mAmerican Airlines

Deal found 18/12$4,542

One-way flights from St. Louis to Sydney
Search for one-way flight options from St. Louis to Sydney. Find affordable one-way fares based on user searches. Data last updated 19 December 2024.

Tue 25/217:37STL - SYD

2 stops25h 53mFiji Airways

Deal found 18/12$953

Tue 25/210:49STL - SYD

2 stops32h 41mMultiple Airlines

Deal found 18/12$1,040

Sun 23/215:50STL - SYD

2 stops48h 45mAir Canada

Deal found 17/12$1,137

Mon 17/206:15STL - SYD

1 stop31h 45mUnited Airlines

Deal found 18/12$1,284

Sat 1/206:03STL - SYD

1 stop33h 57mQantas Airways

Deal found 18/12$1,905

Tue 25/212:00STL - SYD

3 stops49h 55mBritish Airways

Deal found 18/12$13,702

Find flights from St. Louis to Sydney within your budget

Fly from

Fly to

Route

Depart

Return

Price

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sat 1/2

15:50-09:35

2 stops48h 45m

Sydney Kingsford Smith

Sun 25/5

09:20-15:16

2 stops44h 56m

$1,959

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sat 18/1

17:12-21:50

2 stops35h 38m

Sydney Kingsford Smith

Fri 24/1

17:25-23:59

2 stops23h 34m

$2,145

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sat 14/6

19:55-11:45

2 stops24h 50m

Sydney Kingsford Smith

Sat 28/6

13:45-20:16

2 stops21h 31m

$2,226

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sat 1/2

16:36-07:00

1 stop21h 24m

Sydney Kingsford Smith

Sun 25/5

10:20-00:27

1 stop29h 07m

$2,550

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sun 12/1

14:49-19:45

3 stops35h 56m

Sydney Kingsford Smith

Sat 18/1

21:40-13:53

2 stops33h 13m

$3,078

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sat 14/6

18:10-06:55

1 stop21h 45m

Sydney Kingsford Smith

Sat 28/6

17:35-22:58

1 stop20h 23m

$3,099

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Tue 31/12

06:04-06:50

2 stops31h 46m

Sydney Kingsford Smith

Thu 9/1

11:05-09:23

2 stops39h 18m

$3,367

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sun 12/1

07:00-09:15

1 stop33h 15m

Sydney Kingsford Smith

Sat 18/1

18:25-22:20

2 stops44h 55m

$3,447

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sat 18/1

06:03-09:00

1 stop33h 57m

Sydney Kingsford Smith

Fri 24/1

11:15-23:03

1 stop28h 48m

$4,542

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Wed 1/1

10:16-12:00

2 stops32h 44m

Sydney Kingsford Smith

Wed 8/1

22:20-16:20

2 stops35h 00m

$5,353

Flights are sorted by cheapest return flights first.

Deals found on 18/12

Showing 1-10 of 19 results

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?

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

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

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

ANA

8.4

Very Good

839 reviews

Check prices

Reviews

1 / 10

Your hospitality was excellent, very polite and kind. The meal was tasty and good. The buns were cold. Who likes cold buns?

ANA

8.4

Very Good

839 reviews

ANA

8.4

Very Good

839 reviews

Check prices

Reviews

1 / 10

Your hospitality was excellent, very polite and kind. The meal was tasty and good. The buns were cold. Who likes cold buns?

Fiji Airways

8.1

Very Good

191 reviews

ANA

8.4

Very Good

839 reviews

Check prices

Reviews

1 / 10

Your hospitality was excellent, very polite and kind. The meal was tasty and good. The buns were cold. Who likes cold buns?

Alaska Airlines

8.0

Very Good

9,552 reviews

ANA

8.4

Very Good

839 reviews

Check prices

Reviews

1 / 10

Your hospitality was excellent, very polite and kind. The meal was tasty and good. The buns were cold. Who likes cold buns?

Delta

8.0

Very Good

8,604 reviews

ANA

8.4

Very Good

839 reviews

Check prices

Reviews

1 / 10

Your hospitality was excellent, very polite and kind. The meal was tasty and good. The buns were cold. Who likes cold buns?

Air New Zealand

8.0

Very Good

497 reviews

ANA

8.4

Very Good

839 reviews

Check prices

Reviews

1 / 10

Your hospitality was excellent, very polite and kind. The meal was tasty and good. The buns were cold. Who likes cold buns?

Related info for your journey

What are the cheapest airlines flying from St. Louis to Sydney round-trip?
Our cheapest airline available from St. Louis to Sydney is Air Canada. Our recent data shows that you can find tickets from as low as $1,959 on this airline. Additional options worth looking into are Fiji Airways and United Airlines, starting at $2,226 and $2,550 round-trip. Air Canada is 17% 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 Fiji Airways, with whom users have recently found tickets for as low as $953. However, be on the lookout for offers from Air Canada 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

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Alternative routes for St. Louis to Sydney

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How does Cheapflights help users find flights from St. Louis to Sydney?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Sydney from St. Louis today with Cheapflights!

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

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Sydney from St. Louis.

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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Cheap flights from St. Louis to Sydney from $953

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 25/2. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from St. Louis to Sydney

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from St. Louis to Sydney

Cheapest flights from St. Louis to SydneyExplore 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 19 December 2024.

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 19 December 2024.

Find flights from St. Louis to Sydney within your budget

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.

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 13 December 2024.

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

Rainfall in Sydney by month

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

Temperature in Sydney by month

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

Reviews of airlines servicing Sydney

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?

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

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

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

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

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for St. Louis to Sydney

See prices for flight routes from nearby airports that may be better suited for you.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from St. Louis to Sydney?

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

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

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

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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 19 December 2024.