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Cheap flights from Sydney to St. Louis from $2,033

This is the cheapest return flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 13/11. 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.
SYD — STL
24 Apr — 1 May1
1 adult
Wed 24/4
Wed 1/5

The best prices from Sydney Kingsford Smith to Lambert-St Louis are usually found in September or October, booked 25 days in advance, depart on a Wednesday or Friday and return on a Monday

Cheap flight deals from Sydney to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Sydney (SYD) to St. Louis (STL). 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 19 April 2024.

Popular in

December

Cheapest in

September

Average price

$2,883

Round-trip from

$1,922
High demand for flights, 39% potential price rise
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Best time to find cheap flights, 21% potential price drop
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Average for round-trip flights in April 2024
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From Sydney Kingsford Smith to Lambert-St Louis
Search Deals

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

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 Sydney to St. Louis?

Travellers have found it’s best to book a flight 25 days in advance to save up to 64% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 25 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Sydney to St. Louis 1-2 weeks in advance for as low as $2,259, or $3,787 for flights within the next 24 hours.

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

September can be a great time to fly to St. Louis from Sydney with a flight ticket averaging about $2,963. Cheapflights users have found deals in the month of September for as cheap as $1,541. The most expensive prices can be found in the month of December.

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

It’s typically best to fly out from Sydney to St. Louis at midday. Doing so could potentially save you 10% on the flight price compared to flying in the afternoon, which is usually more expensive.

Cheap Japan Airlines flights from Sydney to St. Louis

Explore cheap flight options specifically provided by Japan Airlines for the route between Sydney and St. Louis. 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 595,970 searches. Data last updated 19 April 2024.
Check out some of the cheapest Japan Airlines flights we've come across from Sydney to St. Louis. It's recommended that users confirm their flight details before booking.
Mon 20/508:15SYD - STL
2 stops30h 02mJapan Airlines
Tue 20/809:56STL - SYD
2 stops29h 14mJapan Airlines
Deal found 17/4$4,099
Wed 22/508:15SYD - STL
2 stops45h 20mJapan Airlines
Thu 22/809:56STL - SYD
2 stops29h 14mJapan Airlines
Deal found 17/4$7,250
Mon 20/508:15SYD - STL
2 stops30h 02mJapan Airlines
Tue 20/806:26STL - SYD
2 stops32h 44mJapan Airlines
Deal found 17/4$7,798
Mon 20/508:15SYD - STL
2 stops30h 02mJapan Airlines
Mon 19/809:56STL - SYD
2 stops29h 14mJapan Airlines
Deal found 17/4$7,845
Tue 21/508:15SYD - STL
2 stops54h 02mJapan Airlines
Wed 21/806:26STL - SYD
2 stops32h 44mJapan Airlines
Deal found 17/4$8,131
Fri 17/508:15SYD - STL
2 stops45h 20mJapan Airlines
Thu 22/809:56STL - SYD
2 stops29h 14mJapan Airlines
Deal found 17/4$8,395
Fri 17/508:15SYD - STL
2 stops45h 20mJapan Airlines
Sat 17/807:44STL - SYD
2 stops31h 26mJapan Airlines
Deal found 17/4$8,542

Cheap Delta flights from Sydney to St. Louis

Explore cheap flight options specifically provided by Delta for the route between Sydney and St. Louis. 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 595,970 searches. Data last updated 19 April 2024.
Some of the best deals we've found on Delta flights travelling from Sydney to St. Louis. Ensure the flight price, dates, time, and airline match your criteria before you book.
Mon 20/509:25SYD - STL
2 stops30h 21mDelta
Mon 19/814:20STL - SYD
2 stops25h 15mDelta
Deal found 17/4$4,214
Mon 20/509:25SYD - STL
2 stops22h 21mDelta
Fri 23/814:20STL - SYD
2 stops25h 15mDelta
Deal found 17/4$4,264

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

Find cheap flight options from Sydney to St. Louis specifically for the months of April and May 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 595,970 searches. Prices were last updated on 19 April 2024.
Check out some of the best flight deals from Sydney to St. Louis in 2024. More deals are always being added, so be sure to check back regularly.
Mon 20/508:15SYD - STL
2 stops30h 02mJapan Airlines
Tue 20/809:56STL - SYD
2 stops29h 14mJapan Airlines
Deal found 17/4$4,099
Mon 20/509:25SYD - STL
2 stops23h 20mDelta
Wed 21/814:05STL - SYD
2 stops25h 30mDelta
Deal found 17/4$4,214
Mon 20/509:25SYD - STL
2 stops22h 21mDelta
Fri 23/814:20STL - SYD
2 stops25h 15mDelta
Deal found 17/4$4,264
Mon 20/509:15SYD - STL
1 stop29h 02mQantas Airways
Tue 20/817:30STL - SYD
1 stop23h 40mQantas Airways
Deal found 17/4$4,861
Mon 20/509:20SYD - STL
2 stops50h 45mAir Canada
Tue 20/812:00STL - SYD
3 stops52h 20mAir Canada
Deal found 17/4$5,028
Mon 20/508:05SYD - STL
2 stops30h 12mQantas Airways
Tue 20/817:30STL - SYD
1 stop23h 40mQantas Airways
Deal found 17/4$5,159
Mon 20/508:00SYD - STL
2 stops30h 17mMultiple Airlines
Wed 21/817:30STL - SYD
1 stop23h 40mMultiple Airlines
Deal found 17/4$5,600
Mon 20/508:05SYD - STL
2 stops30h 12mQantas Airways
Thu 22/817:30STL - SYD
1 stop23h 40mQantas Airways
Deal found 17/4$5,650
Mon 20/507:35SYD - STL
2 stops30h 42mMultiple Airlines
Sun 18/817:30STL - SYD
3 stops46h 55mMultiple Airlines
Deal found 17/4$6,930

Sydney to St. Louis 2024 flight deals

Discover exclusive flight deals for travel between Sydney and St. Louis in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 595,970 searches. Data last updated 19 April 2024.
Check out some of the best flight deals from Sydney to St. Louis in 2024. More deals are always being added, so be sure to check back regularly.
Wed 13/1109:15SYD - STL
2 stops30h 45mJapan Airlines
Sun 17/1106:22STL - SYD
2 stops30h 58mJapan Airlines
Deal found 17/4$2,033
Wed 13/1109:15SYD - STL
2 stops30h 45mJapan Airlines
Sun 17/1106:22STL - SYD
2 stops30h 58mJapan Airlines
Deal found 18/4$2,037
Wed 13/1111:20SYD - STL
2 stops22h 54mUnited Airlines
Sun 17/1116:17STL - SYD
1 stop21h 43mUnited Airlines
Deal found 18/4$2,944
Wed 13/1111:15SYD - STL
1 stop28h 45mQantas Airways
Sun 17/1119:23STL - SYD
1 stop20h 37mQantas Airways
Deal found 17/4$2,956
Wed 13/1117:30SYD - STL
1 stop22h 30mQantas Airways
Sun 17/1111:58STL - SYD
2 stops27h 57mQantas Airways
Deal found 17/4$2,961
Wed 13/1116:50SYD - STL
1 stop18h 26mQantas Airways
Sun 17/1119:23STL - SYD
1 stop20h 37mQantas Airways
Deal found 18/4$2,962
Mon 20/508:15SYD - STL
2 stops30h 02mJapan Airlines
Tue 20/809:56STL - SYD
2 stops29h 14mJapan Airlines
Deal found 17/4$4,099
Mon 20/509:25SYD - STL
2 stops30h 21mDelta
Mon 19/814:20STL - SYD
2 stops25h 15mDelta
Deal found 17/4$4,214
Mon 20/509:25SYD - STL
2 stops22h 21mDelta
Thu 22/814:05STL - SYD
2 stops25h 30mDelta
Deal found 17/4$4,264

Find flights from Sydney to St. Louis within your budget

Customise your flight search to find flights from Sydney to St. Louis 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 595,970 searches. Data last updated 19 April 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$4,099 - $7,980

Route

Depart

Return

Price

Sydney Kingsford SmithLambert-St Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 20/5

2 stops30h 02m

Lambert-St Louis

Tue 20/8

2 stops29h 14m

$4,099

Sydney Kingsford SmithLambert-St Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 20/5

2 stops30h 21m

Lambert-St Louis

Mon 19/8

2 stops25h 15m

$4,214

Sydney Kingsford SmithLambert-St Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 20/5

2 stops22h 21m

Lambert-St Louis

Fri 23/8

2 stops25h 15m

$4,264

Sydney Kingsford SmithLambert-St Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 20/5

1 stop29h 02m

Lambert-St Louis

Tue 20/8

1 stop23h 40m

$4,861

Sydney Kingsford SmithLambert-St Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 20/5

2 stops50h 45m

Lambert-St Louis

Tue 20/8

3 stops52h 20m

$5,028

Sydney Kingsford SmithLambert-St Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 20/5

2 stops30h 12m

Lambert-St Louis

Tue 20/8

1 stop23h 40m

$5,159

Sydney Kingsford SmithLambert-St Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 20/5

2 stops30h 17m

Lambert-St Louis

Wed 21/8

1 stop23h 40m

$5,600

Sydney Kingsford SmithLambert-St Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 20/5

2 stops30h 12m

Lambert-St Louis

Thu 22/8

1 stop23h 40m

$5,650

Sydney Kingsford SmithLambert-St Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Sun 19/5

2 stops37h 59m

Lambert-St Louis

Mon 19/8

2 stops29h 30m

$7,980

Flights are sorted by cheapest first

Deals found on 17/4

When is the best time to book a flight from Sydney to St. Louis?

Use this chart to determine the optimal time to book a return flight from Sydney to St. Louis. Price data was last updated on 28 January 2024.
The best time to book flights from Sydney to St. Louis is 24 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.
Search Deals

When is the cheapest time to fly from Sydney to St. Louis?

Use this chart to determine the cheapest time to fly return from Sydney to St. Louis. Price data was last updated on 14 April 2024.
Morning
Midday
Afternoon
Evening
All times are departure.
Travellers seeking maximum savings on their Sydney to St. Louis flight should consider departing on Wednesday mornings when fares are most often at their lowest. Thursday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

Average price of flights to St. Louis by month

Plan your trip from Sydney to St. Louis by taking into account the cheapest months to travel. The average price of a one-way flight from Sydney to St. Louis is currently $0 while a return flight costs $5,206. Price data was last updated on 14 April 2024.

Temperature and rainfall in St. Louis by month

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

STL

Temperature

0 - 27 °C

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. 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 St. Louis. Reviews last updated 19 April 2024.
To help decide which airline to fly from Sydney to St. Louis, see what other customers have to say about Japan Airlines, Delta and Qantas Airways. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
ANA
8.5
Very Good
951 reviews
Check prices

Entertainment

8.0

Crew

8.8

Food

7.8

Comfort

8.3

Boarding

8.6

Overall

8.5

Reviews

1 / 10

They’re so kind and professional on ANA, I ordered a special meal and they were lovely throughout. Always kind and efficient, felt cared for in the sky

ANA
8.5
Very Good
951 reviews
ANA
8.5
Very Good
951 reviews
Check prices

Entertainment

8.0

Crew

8.8

Food

7.8

Comfort

8.3

Boarding

8.6

Overall

8.5

Reviews

1 / 10

They’re so kind and professional on ANA, I ordered a special meal and they were lovely throughout. Always kind and efficient, felt cared for in the sky

Japan Airlines
8.3
Very Good
1,481 reviews
ANA
8.5
Very Good
951 reviews
Check prices

Entertainment

8.0

Crew

8.8

Food

7.8

Comfort

8.3

Boarding

8.6

Overall

8.5

Reviews

1 / 10

They’re so kind and professional on ANA, I ordered a special meal and they were lovely throughout. Always kind and efficient, felt cared for in the sky

Delta
8.1
Very Good
11,094 reviews
ANA
8.5
Very Good
951 reviews
Check prices

Entertainment

8.0

Crew

8.8

Food

7.8

Comfort

8.3

Boarding

8.6

Overall

8.5

Reviews

1 / 10

They’re so kind and professional on ANA, I ordered a special meal and they were lovely throughout. Always kind and efficient, felt cared for in the sky

Qantas Airways
7.7
Good
1,017 reviews
ANA
8.5
Very Good
951 reviews
Check prices

Entertainment

8.0

Crew

8.8

Food

7.8

Comfort

8.3

Boarding

8.6

Overall

8.5

Reviews

1 / 10

They’re so kind and professional on ANA, I ordered a special meal and they were lovely throughout. Always kind and efficient, felt cared for in the sky

American Airlines
7.3
Good
14,954 reviews
ANA
8.5
Very Good
951 reviews
Check prices

Entertainment

8.0

Crew

8.8

Food

7.8

Comfort

8.3

Boarding

8.6

Overall

8.5

Reviews

1 / 10

They’re so kind and professional on ANA, I ordered a special meal and they were lovely throughout. Always kind and efficient, felt cared for in the sky

Related info for your journey

Find useful and relevant information for your journey from Sydney to St. Louis. 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 Sydney to St. Louis for under $4,100 on Cheapflights?

    Yes, there are multiple flights from Sydney to St. Louis for under $4,100. The cheapest flight booked recently is on Japan Airlines for just $4,099, but on average you can expect to pay $6,468.

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

    Flying on Japan Airlines is currently your cheapest option to St. Louis, with prices starting at $4,099. Additional round-trip tickets that might be worth considering are offered by Delta and Qantas Airways, with the lowest prices starting at $4,214 and $4,861, respectively.

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

    The most popular airlines flying from Sydney to St. Louis are American Airlines, Air Canada and Air New Zealand. Something to consider prior to booking your flight.

  • What does SYD to STL mean?

    Great question - SYD to STL just means Sydney Kingsford Smith Airport to Lambert-St Louis Airport. Now you’ll know what these unique codes when you look for flights!

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

    The amount of baggage you can bring on your Sydney to St. Louis 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 Sydney to St. Louis with specific airlines?

    Yes, Cheapflights allows you to browse and filter Sydney to St. Louis 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 Sydney to St. Louis that include hotel bookings?

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

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

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

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

    Yes. Cheapflights offers flight deals from Sydney to St. Louis 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 Sydney to St. Louis that allow pets onboard?

    Many airlines flying from Sydney to St. Louis 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 Sydney to St. Louis?

    Yes, you can often find last-minute deals on Sydney to St. Louis 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 Sydney to St. Louis flight deals updated?

    The Sydney to St. Louis flight deals you see on this page were last updated on 18/4.

See more FAQs

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Alternative routes for Sydney to St. Louis
See prices for flight routes from nearby airports that may be better suited for you.

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Top 5 airlines flying from Sydney to St. Louis

Discover the top 5 airlines that operate flights from Sydney to St. Louis. 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 595,970 searches. Data last updated 19 April 2024.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$1,498Average$2,125FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Air CanadaCheapest$1,694Average$1,904FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapest$1,775Average$2,464FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Qantas AirwaysCheapest$1,832Average$2,737FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights
Air New ZealandCheapest$2,115Average$2,668FlexibilityNo cancel feeOn-time78%
Search Air New Zealand flights
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Search flights from Sydney to St. Louis by cabin class

Find flights from Sydney to St. Louis, based on your preferred cabin class, be it economy, premium economy, business, or first class.
First Class
Business Class
Prem Econ Class
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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 Sydney to St. Louis?

When you search for this flight from Sydney to St. Louis, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

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

Cheapflights simply makes it quick and affordable to book flights from Sydney to St. Louis by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

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

Yes! Cheapflights helps users easily find flights from Sydney to St. Louis with no change fees.

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

Not ready to book yet? You can track prices for flights from Sydney to St. Louis on Cheapflights with our Price Alert feature and get notified when better prices are available.

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