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

According to our current data, Fiji Airways ($1,202), Air Canada ($1,232), and United Airlines ($1,455) offers the cheapest pricing from St. Louis to Sydney. Fiji Airways is priced at 20% lower than the current average price of a flight leaving 3 months from now.

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

To fly one-way, consider booking your trip with Fiji Airways, which is currently one of the cheapest options available, starting at $600. Air Canada flights start at $716 while deals on United Airlines start at $809 one-way.

What are the most popular airlines that fly from St. Louis to Sydney?

Consider American Airlines, Air Canada or Delta when booking your flight. These represent the most popular airlines when flying from St. Louis to Sydney.

What is the cheapest day to fly round-trip from St. Louis to Sydney?

It’s generally more expensive to depart on a Tuesday, if you have to leave on this day you can still search on Cheapflights to find great options that meet your needs.

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

Find a great deal and save up to 76% by booking at least 61 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from St. Louis to Sydney within the next two weeks, with the cheapest ticket starting at $1,193.

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

Flights from St. Louis to Sydney lean towards being more expensive in December. Prices are generally better when you fly from St. Louis to Sydney in March, with the cheapest ticket starting at $934.

Most accurate provider : When it comes to deals on St. Louis-Sydney flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Sydney flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Sydney flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on St. Louis-Sydney flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-Sydney flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 vacation 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.

$462+ Flights from St. Louis to Sydney

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1. Tell us where you want to go

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

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

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The best prices from Lambert-St Louis to Sydney Kingsford Smith are usually found in March or January, booked 60 days in advance, depart on a Wednesday or Tuesday and return on a Wednesday

Cheap flight deals from St. Louis to Sydney

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$1,202 (oojo)
One-way from	$462 (Kiwi.com)
Popular in	December
Cheapest in	March
Average price	$1,980

Provider with most accurate pricing for Lambert-St Louis-Sydney Kingsford Smith flight deals.

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Provider most trusted by Cheapflights users for Lambert-St Louis-Sydney Kingsford Smith flights.

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From Lambert-St Louis to Sydney Kingsford Smith

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One-way flight from Lambert-St Louis to Sydney Kingsford Smith

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High demand for flights, 4% potential price rise

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Best time to find cheap flights, 2% potential price drop

Search Deals

Average for round-trip flights in December 2024

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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 December 22, 2024.

Mon 12/233:50 pmSTL - SYD

2 stops48h 45mAir Canada

Mon 12/3011:20 amSYD - STL

2 stops44h 46mAir Canada

Deal found 12/22

$1,310

Mon 12/234:43 pmSTL - SYD

2 stops45h 17mUnited Airlines

Mon 12/3011:50 amSYD - STL

1 stop27h 12mUnited Airlines

Deal found 12/22

$2,059

Wed 12/258:30 amSTL - SYD

2 stops31h 15mAir New Zealand

Fri 12/2712:10 pmSYD - STL

1 stop29h 18mAir New Zealand

Deal found 12/21

$2,350

Tue 12/241:44 pmSTL - SYD

2 stops26h 51mMultiple Airlines

Thu 12/265:25 pmSYD - STL

1 stop23h 02mMultiple Airlines

Deal found 12/21

$2,441

Wed 12/255:29 pmSTL - SYD

1 stop20h 06mQantas Airways

Fri 12/275:25 pmSYD - STL

1 stop23h 02mQantas Airways

Deal found 12/21

$2,630

Mon 12/305:17 pmSTL - SYD

2 stops55h 23mLATAM Airlines

Sat 1/411:40 amSYD - STL

3 stops38h 28mLATAM Airlines

Deal found 12/22

$4,763

Best flights from St. Louis to Sydney
Discover carefully curated flight deals from St. Louis to Sydney that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 22, 2024.

Tue 2/45:12 pmSTL - SYD

2 stops26h 18mFiji Airways

Tue 2/112:00 pmSYD - STL

2 stops22h 30mFiji Airways

Deal found 12/21

$1,202

Mon 2/33:50 pmSTL - SYD

2 stops48h 45mAir Canada

Sun 2/2311:20 amSYD - STL

2 stops44h 46mAir Canada

Deal found 12/22

$1,232

Fri 3/218:40 amSTL - SYD

1 stop30h 20mUnited Airlines

Mon 3/3111:20 amSYD - STL

1 stop21h 32mUnited Airlines

Deal found 12/20

$1,455

Tue 2/42:49 pmSTL - SYD

2 stops35h 56mAlaska Airlines

Tue 2/119:40 pmSYD - STL

2 stops43h 19mAlaska Airlines

Deal found 12/20

$1,471

Sat 2/14:36 pmSTL - SYD

2 stops23h 09mAir New Zealand

Sat 2/1512:10 pmSYD - STL

1 stop23h 46mAir New Zealand

Deal found 12/22

$1,601

Fri 2/146:10 amSTL - SYD

1 stop33h 50mQantas Airways

Fri 2/2111:15 amSYD - STL

1 stop28h 53mQantas Airways

Deal found 12/21

$1,751

Sat 2/14:36 pmSTL - SYD

2 stops24h 49mMultiple Airlines

Sat 2/1511:45 amSYD - STL

3 stops25h 59mMultiple Airlines

Deal found 12/22

$1,890

Tue 2/45:30 pmSTL - SYD

3 stops56h 30mTurkish Airlines

Tue 2/119:00 pmSYD - STL

3 stops58h 36mTurkish Airlines

Deal found 12/21

$2,093

Fri 3/213:48 pmSTL - SYD

3 stops71h 07mBritish Airways

Mon 3/313:40 pmSYD - STL

3 stops46h 00mBritish Airways

Deal found 12/20

$3,950

Mon 12/305:17 pmSTL - SYD

2 stops55h 23mLATAM Airlines

Sat 1/411:40 amSYD - STL

3 stops38h 28mLATAM Airlines

Deal found 12/22

$4,763

Mon 3/101:05 pmSTL - SYD

2 stops29h 25mANA

Wed 3/1912:25 pmSYD - STL

2 stops42h 51mANA

Deal found 12/22

$6,079

Last-minute flights from St. Louis to Sydney
Discover last-minute flight deals from St. Louis to Sydney. Data last updated December 22, 2024 and is based on user searches.

Mon 12/233:50 pmSTL - SYD

2 stops48h 45mAir Canada

Mon 12/3011:20 amSYD - STL

2 stops44h 46mAir Canada

Deal found 12/22

$1,310

Wed 12/255:29 pmSTL - SYD

1 stop20h 06mQantas Airways

Fri 12/275:25 pmSYD - STL

1 stop23h 02mQantas Airways

Deal found 12/21

$2,630

Mon 12/306:00 amSTL - SYD

2 stops35h 25mAir New Zealand

Sat 1/47:15 pmSYD - STL

2 stops45h 44mAir New Zealand

Deal found 12/22

$3,257

Mon 12/305:17 pmSTL - SYD

2 stops55h 23mLATAM Airlines

Sat 1/411:40 amSYD - STL

3 stops38h 28mLATAM Airlines

Deal found 12/22

$4,763

Wed 1/18:50 amSTL - SYD

1 stop31h 25mUnited Airlines

Fri 1/1012:10 pmSYD - STL

1 stop22h 59mUnited Airlines

Deal found 12/22

$2,105

Wed 1/18:35 amSTL - SYD

3 stops31h 10mMultiple Airlines

Fri 1/109:55 amSYD - STL

3 stops27h 48mMultiple Airlines

Deal found 12/22

$2,744

Sun 1/122:49 pmSTL - SYD

3 stops35h 56mAlaska Airlines

Sat 1/189:40 pmSYD - STL

2 stops33h 13mAlaska Airlines

Deal found 12/21

$1,863

Sun 1/127:00 amSTL - SYD

1 stop33h 15mAir New Zealand

Sat 1/187:15 pmSYD - STL

2 stops40h 44mAir New Zealand

Deal found 12/21

$2,168

Sun 1/191:45 pmSTL - SYD

2 stops26h 20mUnited Airlines

Sun 1/2611:50 amSYD - STL

1 stop19h 47mUnited Airlines

Deal found 12/21

$1,558

Tue 1/215:12 pmSTL - SYD

2 stops26h 18mFiji Airways

Tue 1/282:00 pmSYD - STL

2 stops22h 30mFiji Airways

Deal found 12/22

$1,436

Tue 1/215:12 pmSTL - SYD

2 stops26h 18mMultiple Airlines

Tue 1/286:25 amSYD - STL

3 stops28h 11mMultiple Airlines

Deal found 12/22

$1,965

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 December 22, 2024.

Sun 2/237:00 amSTL - SYD

2 stops39h 35mMultiple Airlines

Deal found 12/22

$462

Tue 2/255:37 pmSTL - SYD

2 stops25h 53mFiji Airways

Deal found 12/22

$600

Sun 2/163:50 pmSTL - SYD

2 stops48h 45mAir Canada

Deal found 12/22

$716

Mon 2/179:00 amSTL - SYD

1 stop31h 15mUnited Airlines

Deal found 12/20

$809

Thu 12/266:30 amSTL - SYD

1 stop33h 30mAmerican Airlines

Deal found 12/22

$2,013

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

Tue 2/4

5:12 pm-12:30 pm

2 stops26h 18m

Sydney Kingsford Smith

Tue 2/11

2:00 pm-7:30 pm

2 stops22h 30m

$1,202

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sun 6/1

1:30 pm-7:20 am

2 stops26h 50m

Sydney Kingsford Smith

Wed 6/11

9:20 am-3:16 pm

2 stops44h 56m

$1,227

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Thu 5/8

7:55 pm-12:15 pm

2 stops25h 20m

Sydney Kingsford Smith

Sat 5/17

1:45 pm-10:24 pm

2 stops23h 39m

$1,300

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Mon 5/5

7:14 pm-6:55 am

1 stop20h 41m

Sydney Kingsford Smith

Sun 5/18

10:20 am-5:59 pm

1 stop22h 39m

$1,405

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Tue 2/4

2:49 pm-7:45 pm

2 stops35h 56m

Sydney Kingsford Smith

Tue 2/11

9:40 pm-11:59 pm

2 stops43h 19m

$1,471

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sat 5/3

7:14 pm-6:55 am

1 stop20h 41m

Sydney Kingsford Smith

Wed 5/21

11:50 am-8:21 pm

2 stops23h 31m

$1,591

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sun 6/1

6:19 pm-6:35 am

1 stop21h 16m

Sydney Kingsford Smith

Wed 6/11

5:35 pm-10:58 pm

1 stop20h 23m

$1,648

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Tue 2/4

5:30 pm-7:00 pm

3 stops56h 30m

Sydney Kingsford Smith

Tue 2/11

9:00 pm-2:36 pm

3 stops58h 36m

$2,093

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sun 6/1

5:40 pm-9:35 am

3 stops48h 55m

Sydney Kingsford Smith

Wed 6/11

11:50 am-8:51 am

3 stops36h 01m

$3,242

St. LouisSydney

STL - SYD

STLSYD

Lambert-St Louis

Sun 3/23

6:15 am-8:50 pm

2 stops46h 35m

Sydney Kingsford Smith

Thu 4/17

7:35 am-10:54 pm

2 stops30h 19m

$3,525

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/22

Showing 1-10 of 16 results

Compare providers for flights from St. Louis to Sydney

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Sydney in December.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
AranGrant	Price Accuracy3 stars	Trust Score*2 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on St. Louis-Sydney flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Sydney flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Sydney flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on St. Louis-Sydney flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-Sydney flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 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.

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?

The best time to book flights from St. Louis to Sydney is 60 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, February is the cheapest month in which you can book a flight from St. Louis to Sydney (average of $1,051). Flying from St. Louis to Sydney in December is currently the most expensive (average of $1,643). 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.

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

It’s optimal to fly from St. Louis to Sydney in the evening. By choosing this option you can save up to 24% on the cost of your flight, compared to a flight at noon.

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

Travelers seeking maximum savings on their St. Louis to Sydney flight should consider departing on Monday mornings when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in Sydney by month

In terms of precipitation, rainfall in Sydney ranges from 2.0 - 5.1 inches per month. March is typically the wettest month, when rainfall can reach 5.1 in. September is typically the driest time to visit Sydney when rainfall is around 2.0 in.

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 71.6 F. Travelers looking to avoid the cold should look outside of July, when temperatures are typically at their lowest (around 51.8 F).

Reviews of airlines servicing Sydney

Get a feel of what it's like to fly with Air New Zealand and United Airlines from St. Louis to Sydney by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

ANA

8.4

Very good

844 reviews

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

844 reviews

ANA

8.4

Very good

844 reviews

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

844 reviews

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

9,537 reviews

ANA

8.4

Very good

844 reviews

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

493 reviews

ANA

8.4

Very good

844 reviews

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?

Qantas Airways

7.5

Good

806 reviews

ANA

8.4

Very good

844 reviews

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?
According to our current data, Fiji Airways ($1,202), Air Canada ($1,232), and United Airlines ($1,455) offers the cheapest pricing from St. Louis to Sydney. Fiji Airways is priced at 20% lower than the current average price of a flight leaving 3 months from now.
What are the cheapest airlines to fly from St. Louis to Sydney one-way?
To fly one-way, consider booking your trip with Fiji Airways, which is currently one of the cheapest options available, starting at $600. Air Canada flights start at $716 while deals on United Airlines start at $809 one-way.
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 vacation 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, February is the cheapest month in which you can book a flight from St. Louis to Sydney (average of $1,051). Flying from St. Louis to Sydney in December is currently the most expensive (average of $1,643). 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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Other flights to Sydney

Top 6 airlines flying from St. Louis to Sydney

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest$942	Average$1,551	FlexibilityNo cancel fee	On-timeN/A
Air Canada	Cheapest$962	Average$1,297	FlexibilityNo cancel fee	On-time67%
United Airlines	Cheapest$989	Average$1,429	FlexibilityNo cancel fee	On-time69%
American Airlines	Cheapest$1,134	Average$1,463	FlexibilityNo cancel fee	On-time71%
Qantas Airways	Cheapest$1,232	Average$1,599	FlexibilityNo cancel fee	On-time74%
Air New Zealand	Cheapest$1,401	Average$1,747	FlexibilityNo cancel fee	On-time78%

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$462+ Cheap flights from St. Louis (STL) 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 2/23. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from St. Louis to Sydney with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

The best prices from Lambert-St Louis to Sydney Kingsford Smith are usually found in March or January, booked 60 days in advance, depart on a Wednesday or Tuesday and return on a Wednesday

Cheap flight deals from St. Louis to Sydney

Most accurate provider

Most trusted provider

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 December 22, 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 December 22, 2024.

Find flights from St. Louis to Sydney within your budget

Compare providers for flights from St. Louis to Sydney

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Sydney in December.

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 round-trip flight from St. Louis to Sydney. Price data was last updated on December 20, 2024.

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

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

Find hourly flight availability from St. Louis to Sydney. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 22, 2024.

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

Use this chart to determine the cheapest time to fly round-trip from St. Louis to Sydney. Price data was last updated on December 16, 2024.

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

Get a feel of what it's like to fly with Air New Zealand and United Airlines from St. Louis to Sydney by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

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.

Top 6 airlines flying from St. Louis to Sydney

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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 December 22, 2024.