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Cheap flights from St. Louis (STL) to Sydney (SYD) from $1,027

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 10/9. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
STL — SYD
May 7 — May 141
From?
To?
Tue 5/7
Tue 5/14
1 adult, Economy
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The best prices from Lambert-St Louis to Sydney Kingsford Smith are usually found in November or October, booked 47 days in advance, depart on a Sunday or Saturday and return on a Monday

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 May 2, 2024.

Popular in

December

Cheapest in

November

Round-trip from

$1,114

One-way from

$1,030
High demand for flights, 34% potential price rise
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Best time to find cheap flights, 24% potential price drop
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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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What is the cheapest day to fly round-trip from St. Louis to Sydney?

It’s generally more expensive to depart on a Saturday, 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 81% by booking at least 48 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 $2,362.

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 November, with the cheapest ticket starting at $1,218.

When is the cheapest time to fly from St. Louis to Sydney (STL - SYD)?

It’s optimal to fly from St. Louis to Sydney in the morning. By choosing this option you can save up to 10% on the cost of your flight, compared to a flight in the evening.

Cheap Air New Zealand flights from St. Louis to Sydney

Explore cheap flight options specifically provided by Air New Zealand for the route between St. Louis and Sydney. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,899,487 searches. Data last updated May 2, 2024.
Peruse some of the lowest-priced Air New Zealand flights we've found from St. Louis to Sydney. It's recommended that users confirm their flight details before booking.
Sat 9/75:01 pmSTL - SYD
2 stops26h 34mAir New Zealand
Sat 9/146:10 pmSYD - STL
2 stops61h 53mAir New Zealand
Deal found 4/30$1,397
Thu 8/86:20 amSTL - SYD
2 stops35h 25mAir New Zealand
Thu 8/1511:50 amSYD - STL
2 stops25h 24mAir New Zealand
Deal found 5/1$1,495
Mon 10/284:17 pmSTL - SYD
2 stops24h 28mAir New Zealand
Fri 11/87:15 pmSYD - STL
2 stops42h 06mAir New Zealand
Deal found 5/1$1,541
Sat 9/75:01 pmSTL - SYD
2 stops26h 34mAir New Zealand
Sat 9/1410:20 amSYD - STL
1 stop21h 43mAir New Zealand
Deal found 4/30$1,559
Mon 10/284:17 pmSTL - SYD
2 stops28h 13mAir New Zealand
Fri 11/82:00 pmSYD - STL
1 stop20h 03mAir New Zealand
Deal found 5/1$1,572
Sat 9/1411:05 amSTL - SYD
2 stops30h 40mAir New Zealand
Sat 9/218:45 amSYD - STL
2 stops28h 28mAir New Zealand
Deal found 4/30$1,735
Sat 9/145:01 pmSTL - SYD
2 stops24h 44mAir New Zealand
Sat 9/2110:20 amSYD - STL
1 stop21h 43mAir New Zealand
Deal found 4/30$1,736
Tue 10/155:01 pmSTL - SYD
2 stops23h 44mAir New Zealand
Sun 10/2011:20 amSYD - STL
1 stop29h 10mAir New Zealand
Deal found 5/1$1,834
Mon 6/34:55 pmSTL - SYD
2 stops24h 50mAir New Zealand
Sun 6/169:55 amSYD - STL
2 stops27h 20mAir New Zealand
Deal found 5/1$1,858

Cheap Air Canada flights from St. Louis to Sydney

Explore cheap flight options specifically provided by Air Canada for the route between St. Louis and Sydney. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,899,487 searches. Data last updated May 2, 2024.
Browse through some of the cheapest Air Canada flights traveling from St. Louis to Sydney. Check back soon if you're not seeing flights that suit your needs.
Wed 5/2211:00 amSTL - SYD
2 stops29h 20mAir Canada
Fri 5/319:20 amSYD - STL
2 stops26h 45mAir Canada
Deal found 5/1$1,485
Wed 5/2211:00 amSTL - SYD
2 stops29h 20mAir Canada
Wed 6/269:20 amSYD - STL
2 stops45h 01mAir Canada
Deal found 5/1$1,534
Wed 5/2211:00 amSTL - SYD
3 stops53h 20mAir Canada
Wed 6/269:20 amSYD - STL
2 stops45h 01mAir Canada
Deal found 5/1$1,582
Sun 6/99:50 amSTL - SYD
2 stops30h 30mAir Canada
Mon 7/299:20 amSYD - STL
2 stops25h 41mAir Canada
Deal found 5/1$1,842
Tue 10/1512:00 pmSTL - SYD
2 stops28h 20mAir Canada
Sun 10/2010:20 amSYD - STL
3 stops50h 45mAir Canada
Deal found 5/1$1,914
Tue 10/1512:00 pmSTL - SYD
3 stops52h 20mAir Canada
Sun 10/2010:20 amSYD - STL
3 stops50h 45mAir Canada
Deal found 5/1$1,920
Wed 5/2211:00 amSTL - SYD
3 stops53h 20mAir Canada
Sat 6/299:20 amSYD - STL
2 stops45h 01mAir Canada
Deal found 5/1$1,965
Mon 5/66:00 amSTL - SYD
2 stops34h 20mAir Canada
Mon 5/139:20 amSYD - STL
2 stops49h 41mAir Canada
Deal found 5/1$2,017
Mon 5/611:00 amSTL - SYD
3 stops29h 20mAir Canada
Mon 5/139:20 amSYD - STL
2 stops26h 45mAir Canada
Deal found 5/1$2,220

Cheap St. Louis to Sydney flights in May & June 2024

Find cheap flight options from St. Louis to Sydney specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,899,487 searches. Prices were last updated on May 2, 2024.
These are some of the best deals we've found on flights to Sydney in 2024 at this time. Check back soon for alternative fares.
Wed 5/2211:00 amSTL - SYD
2 stops29h 20mAir Canada
Fri 5/319:20 amSYD - STL
2 stops26h 45mAir Canada
Deal found 5/1$1,485
Wed 5/2210:10 amSTL - SYD
2 stops29h 45mUnited Airlines
Wed 6/2610:20 amSYD - STL
2 stops25h 29mUnited Airlines
Deal found 5/1$1,529
Wed 5/2211:00 amSTL - SYD
2 stops29h 20mAir Canada
Wed 6/269:20 amSYD - STL
2 stops45h 01mAir Canada
Deal found 5/1$1,534
Wed 5/227:55 amSTL - SYD
2 stops31h 40mDelta
Mon 7/19:25 amSYD - STL
2 stops30h 32mDelta
Deal found 5/1$1,552
Wed 5/226:02 pmSTL - SYD
1 stop22h 03mAmerican Airlines
Fri 5/319:15 amSYD - STL
1 stop29h 02mAmerican Airlines
Deal found 5/1$1,574
Wed 5/226:02 pmSTL - SYD
1 stop22h 03mAmerican Airlines
Fri 5/319:15 amSYD - STL
2 stops25h 15mAmerican Airlines
Deal found 5/1$1,577
Wed 5/224:51 pmSTL - SYD
2 stops23h 04mUnited Airlines
Thu 6/2710:20 amSYD - STL
2 stops26h 51mUnited Airlines
Deal found 5/1$1,579
Wed 5/2211:00 amSTL - SYD
3 stops53h 20mAir Canada
Wed 6/269:20 amSYD - STL
2 stops45h 01mAir Canada
Deal found 5/1$1,582
Wed 5/224:51 pmSTL - SYD
2 stops23h 04mUnited Airlines
Sat 6/2910:20 amSYD - STL
2 stops38h 41mUnited Airlines
Deal found 5/1$1,600

St. Louis to Sydney 2024 flight deals

Discover exclusive flight deals for travel between St. Louis and Sydney in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,899,487 searches. Data last updated May 2, 2024.
These are some of the best deals we've found on flights to Sydney in 2024 at this time. Check back soon for alternative fares.
Sat 9/75:01 pmSTL - SYD
2 stops26h 34mAir New Zealand
Sat 9/146:10 pmSYD - STL
2 stops61h 53mAir New Zealand
Deal found 4/30$1,397
Wed 5/2211:00 amSTL - SYD
2 stops29h 20mAir Canada
Fri 5/319:20 amSYD - STL
2 stops26h 45mAir Canada
Deal found 5/1$1,485
Thu 8/86:20 amSTL - SYD
2 stops35h 25mAir New Zealand
Thu 8/1511:50 amSYD - STL
2 stops25h 24mAir New Zealand
Deal found 5/1$1,495
Sat 9/71:39 pmSTL - SYD
3 stops28h 06mMultiple Airlines
Sat 9/149:55 amSYD - STL
2 stops27h 18mMultiple Airlines
Deal found 4/30$1,515
Sat 9/71:39 pmSTL - SYD
3 stops28h 06mMultiple Airlines
Sat 9/148:45 amSYD - STL
3 stops27h 43mMultiple Airlines
Deal found 4/30$1,519
Wed 5/2210:10 amSTL - SYD
2 stops29h 45mUnited Airlines
Wed 6/2610:20 amSYD - STL
2 stops25h 29mUnited Airlines
Deal found 5/1$1,529
Wed 5/2211:00 amSTL - SYD
2 stops29h 20mAir Canada
Wed 6/269:20 amSYD - STL
2 stops45h 01mAir Canada
Deal found 5/1$1,534
Mon 10/284:17 pmSTL - SYD
2 stops24h 28mAir New Zealand
Fri 11/87:15 pmSYD - STL
2 stops42h 06mAir New Zealand
Deal found 5/1$1,541
Wed 5/227:55 amSTL - SYD
2 stops31h 40mDelta
Mon 7/19:25 amSYD - STL
2 stops30h 32mDelta
Deal found 5/1$1,552

St. Louis to Sydney flights leaving soon

Find last-minute flight options from St. Louis to Sydney for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 2,899,487 searches. Data last updated May 2, 2024.
Book one of these great deals on flights from St. Louis to Sydney. To prevent any unwanted surprises, users should verify their flight info before booking.
Mon 5/66:00 amSTL - SYD
2 stops34h 20mAir Canada
Mon 5/139:20 amSYD - STL
2 stops49h 41mAir Canada
Deal found 5/1$2,017
Mon 5/611:00 amSTL - SYD
3 stops29h 20mAir Canada
Mon 5/139:20 amSYD - STL
2 stops26h 45mAir Canada
Deal found 5/1$2,220
Mon 5/67:51 pmSTL - SYD
2 stops56h 54mMultiple Airlines
Mon 5/133:50 pmSYD - STL
1 stop18h 38mMultiple Airlines
Deal found 5/1$2,261
Mon 5/67:20 pmSTL - SYD
1 stop19h 55mQantas Airways
Mon 5/139:15 amSYD - STL
1 stop29h 02mQantas Airways
Deal found 5/1$2,555
Mon 5/65:08 pmSTL - SYD
3 stops45h 02mBritish Airways
Mon 5/132:45 pmSYD - STL
3 stops44h 01mBritish Airways
Deal found 5/1$10,648
Wed 5/86:02 pmSTL - SYD
1 stop22h 03mQantas Airways
Wed 5/159:15 amSYD - STL
1 stop29h 02mQantas Airways
Deal found 5/1$26,830
Wed 5/85:25 pmSTL - SYD
2 stops37h 40mEmirates
Wed 5/159:10 pmSYD - STL
2 stops37h 44mEmirates
Deal found 5/1$28,532

One-way flights to Sydney from St. Louis

Search for one-way flight options from St. Louis to Sydney. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 2,899,487 searches. Data last updated May 2, 2024.
Users traveling one-way from St. Louis to Sydney can select one of these great deals. Users needing a return flight from St. Louis to Sydney should utilize the search form above.
Wed 10/94:55 pmSTL - SYD
2 stops23h 05mUnited Airlines
Deal found 5/1$1,027
Fri 9/275:30 pmSTL - SYD
1 stop22h 35mQantas Airways
Deal found 5/1$1,030
Wed 10/92:05 pmSTL - SYD
3 stops27h 10mMultiple Airlines
Deal found 5/1$1,038
Fri 9/272:38 pmSTL - SYD
2 stops25h 27mAmerican Airlines
Deal found 5/1$1,091
Fri 9/276:05 pmSTL - SYD
1 stop21h 55mUnited Airlines
Deal found 5/1$1,092
Fri 5/314:55 pmSTL - SYD
2 stops24h 50mAir New Zealand
Deal found 5/1$1,202
Fri 9/2711:09 amSTL - SYD
3 stops29h 36mMultiple Airlines
Deal found 5/1$1,223
Fri 5/318:45 pmSTL - SYD
3 stops32h 00mMultiple Airlines
Deal found 5/1$1,273
Fri 5/316:02 pmSTL - SYD
1 stop22h 03mAmerican Airlines
Deal found 5/1$1,417

Find flights from St. Louis to Sydney within your budget

Customize 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 2,899,487 searches. Data last updated May 2, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$1,397 - $2,477

Route

Depart

Return

Price

Lambert-St LouisSydney Kingsford Smith

STL - SYD

STLSYD

Lambert-St Louis

Sat 9/7

2 stops26h 34m

Sydney Kingsford Smith

Sat 9/14

2 stops61h 53m

$1,397

Lambert-St LouisSydney Kingsford Smith

STL - SYD

STLSYD

Lambert-St Louis

Wed 5/22

2 stops29h 20m

Sydney Kingsford Smith

Fri 5/31

2 stops26h 45m

$1,485

Lambert-St LouisSydney Kingsford Smith

STL - SYD

STLSYD

Lambert-St Louis

Thu 8/8

2 stops35h 25m

Sydney Kingsford Smith

Thu 8/15

2 stops25h 24m

$1,495

Lambert-St LouisSydney Kingsford Smith

STL - SYD

STLSYD

Lambert-St Louis

Sat 9/7

3 stops28h 06m

Sydney Kingsford Smith

Sat 9/14

2 stops27h 18m

$1,515

Lambert-St LouisSydney Kingsford Smith

STL - SYD

STLSYD

Lambert-St Louis

Wed 5/22

2 stops29h 45m

Sydney Kingsford Smith

Wed 6/26

2 stops25h 29m

$1,529

Lambert-St LouisSydney Kingsford Smith

STL - SYD

STLSYD

Lambert-St Louis

Wed 5/22

2 stops32h 35m

Sydney Kingsford Smith

Sun 6/30

2 stops30h 33m

$1,552

Lambert-St LouisSydney Kingsford Smith

STL - SYD

STLSYD

Lambert-St Louis

Wed 5/22

1 stop22h 03m

Sydney Kingsford Smith

Fri 5/31

1 stop29h 02m

$1,574

Lambert-St LouisSydney Kingsford Smith

STL - SYD

STLSYD

Lambert-St Louis

Thu 8/8

1 stop33h 05m

Sydney Kingsford Smith

Thu 8/15

1 stop28h 27m

$1,721

Lambert-St LouisSydney Kingsford Smith

STL - SYD

STLSYD

Lambert-St Louis

Sun 7/21

2 stops37h 21m

Sydney Kingsford Smith

Thu 7/25

2 stops30h 32m

$2,477

Flights are sorted by cheapest first

Deals found on 4/30

When is the best time to 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 January 28, 2024.
The best time to book flights from St. Louis to Sydney is 47 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.
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When is the cheapest time 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 April 28, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
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. Wednesday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
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Average price of flights to Sydney by month

Plan your trip from St. Louis to Sydney by taking into account the cheapest months to travel. The average price of a one-way flight from St. Louis to Sydney is currently $1,155 while a round-trip flight costs $1,638. Price data was last updated on April 28, 2024.

Currently, February is the cheapest month in which you can book a flight from St. Louis to Sydney (average of $1,114). Flying from St. Louis to Sydney in July is currently the most expensive (average of $1,431). 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.

January

$1,298

February

$1,114

March

$1,132

April

$1,359

May

$1,370

June

$1,388

July

$1,431

August

$1,310

September

$1,279

October

$1,214

November

$1,271

December

$1,396

Temperature and rainfall in Sydney by month

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

SYD

Temperature

51.8 - 71.6 °F

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 May 2, 2024.
Get a feel of what it's like to fly with Air New Zealand, Air Canada 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.
Japan Airlines
8.3
Very good
1,487 reviews
Check prices

Food

7.9

Comfort

8.2

Crew

8.7

Overall

8.3

Boarding

8.4

Entertainment

7.8

Reviews

1 / 10

Good food. Great crew. Online access to upgrade to Economy Plus was confusing and difficult. Or possibly just sold out. JAL's English website is challenging.

Japan Airlines
8.3
Very good
1,487 reviews
Japan Airlines
8.3
Very good
1,487 reviews
Check prices

Food

7.9

Comfort

8.2

Crew

8.7

Overall

8.3

Boarding

8.4

Entertainment

7.8

Reviews

1 / 10

Good food. Great crew. Online access to upgrade to Economy Plus was confusing and difficult. Or possibly just sold out. JAL's English website is challenging.

Air New Zealand
8.3
Very good
643 reviews
Japan Airlines
8.3
Very good
1,487 reviews
Check prices

Food

7.9

Comfort

8.2

Crew

8.7

Overall

8.3

Boarding

8.4

Entertainment

7.8

Reviews

1 / 10

Good food. Great crew. Online access to upgrade to Economy Plus was confusing and difficult. Or possibly just sold out. JAL's English website is challenging.

Delta
8.1
Very good
10,874 reviews
Japan Airlines
8.3
Very good
1,487 reviews
Check prices

Food

7.9

Comfort

8.2

Crew

8.7

Overall

8.3

Boarding

8.4

Entertainment

7.8

Reviews

1 / 10

Good food. Great crew. Online access to upgrade to Economy Plus was confusing and difficult. Or possibly just sold out. JAL's English website is challenging.

Cathay Pacific
7.8
Good
1,114 reviews
Japan Airlines
8.3
Very good
1,487 reviews
Check prices

Food

7.9

Comfort

8.2

Crew

8.7

Overall

8.3

Boarding

8.4

Entertainment

7.8

Reviews

1 / 10

Good food. Great crew. Online access to upgrade to Economy Plus was confusing and difficult. Or possibly just sold out. JAL's English website is challenging.

Qantas Airways
7.7
Good
985 reviews
Japan Airlines
8.3
Very good
1,487 reviews
Check prices

Food

7.9

Comfort

8.2

Crew

8.7

Overall

8.3

Boarding

8.4

Entertainment

7.8

Reviews

1 / 10

Good food. Great crew. Online access to upgrade to Economy Plus was confusing and difficult. Or possibly just sold out. JAL's English website is challenging.

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.

  • Can I find flights from St. Louis to Sydney for under $1,400 on Cheapflights?

    Yes, there are multiple flights from St. Louis to Sydney for under $1,400. The cheapest flight booked recently is on Air New Zealand for just $1,397, but on average you can expect to pay $1,552.

  • Are there last-minute flights available from St. Louis to Sydney for under $2,100?

    There are currently 7+ open flights from St. Louis to Sydney within the next 7 days for less than $2,100.

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

    According to our current data, Air New Zealand ($1,397), Air Canada ($1,485), and United Airlines ($1,529) offers the cheapest pricing from St. Louis to Sydney. Air New Zealand is priced at 24% 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 United Airlines, which is currently one of the cheapest options available, starting at $1,027. Qantas Airways flights start at $1,030 while deals on American Airlines start at $1,091 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 does STL to SYD mean?

    These are just IATA (International Air Transport Association) codes. They are used in aviation to identify and differentiate airports. That’s why a Lambert-St Louis Airport to Sydney Kingsford Smith Airport flight would often be abbreviated as a STL to SYD flight.

  • Can I find deals for flights from St. Louis to Sydney that include extra baggage allowance?

    The amount of baggage you can bring on your St. Louis to Sydney flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from St. Louis to Sydney with specific airlines?

    Yes, Cheapflights allows you to browse and filter St. Louis to Sydney flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • 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.

  • Can I find deals for flights from St. Louis to Sydney that allow pets onboard?

    Many airlines flying from St. Louis to Sydney offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from St. Louis to Sydney?

    Yes, you can often find last-minute deals on St. Louis to Sydney flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the St. Louis to Sydney flight deals updated?

    The St. Louis to Sydney flight deals you see on this page were last updated on 5/1.

See more FAQs

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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
Columbia to Sydney flights

Top 6 airlines flying from St. Louis to Sydney

Discover the top 6 airlines that operate flights from St. Louis 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 2,899,487 searches. Data last updated May 2, 2024.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$986Average$1,364FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
DeltaCheapest$1,013Average$1,535FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Air CanadaCheapest$1,176Average$1,319FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
American AirlinesCheapest$1,214Average$1,564FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Qantas AirwaysCheapest$1,257Average$1,774FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights
Air New ZealandCheapest$1,423Average$1,602FlexibilityNo cancel feeOn-time78%
Search Air New Zealand flights
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Search flights from St. Louis to Sydney by cabin class

Find flights from St. Louis to Sydney, based on your preferred cabin class, be it economy, premium economy, business, or first class.
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