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Cheap flights from Sydney to St. Louis from $1,720

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/5. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — STL
26 Feb — 5 Mar1
1 adult

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 21 February 2025.

Round-trip from

$1,720

Popular in

August

Cheapest in

March

Average price

$1,980
United Airlines
  • United Airlines
  • 12/5-31/5
  • 4 total stops
  • 97h 50m total
  • Sydney to St. Louis
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($361 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($149 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 2025
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Find flight deals from Sydney to St. Louis

Cheapest flights from Sydney to St. Louis
Explore the most affordable flight options available from Sydney to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 February 2025.

Mon 12/509:30SYD - STL
2 stops42h 15mUnited Airlines
Sat 31/508:25STL - SYD
2 stops55h 35mUnited Airlines
Deal found 20/2$1,720
Mon 12/509:20SYD - STL
2 stops42h 16mAir Canada
Sat 31/513:30STL - SYD
2 stops50h 50mAir Canada
Deal found 21/2$1,736
Tue 1/410:10SYD - STL
1 stop28h 59mAmerican Airlines
Mon 30/606:29STL - SYD
1 stop33h 36mAmerican Airlines
Deal found 20/2$2,518
Fri 11/409:10SYD - STL
1 stop29h 06mQantas Airways
Sun 27/406:15STL - SYD
1 stop33h 50mQantas Airways
Deal found 21/2$2,562
Mon 18/809:55SYD - STL
3 stops28h 44mMultiple Airlines
Sat 8/1113:30STL - SYD
3 stops26h 15mMultiple Airlines
Deal found 20/2$3,186
Tue 1/421:55SYD - STL
3 stops56h 47mTurkish Airlines
Mon 30/608:10STL - SYD
3 stops43h 50mTurkish Airlines
Deal found 20/2$4,007

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 647,157 searches. Data last updated 21 February 2025.

Fly from

Sydney

Fly to

St. Louis

Route

Depart

Return

Price

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 12/5

09:30-12:45

2 stops42h 15m

Lambert-St Louis

Sat 31/5

08:25-07:00

2 stops55h 35m

$1,720

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 12/5

09:20-12:36

2 stops42h 16m

Lambert-St Louis

Sat 31/5

13:30-07:20

2 stops50h 50m

$1,736

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Tue 1/4

10:10-23:09

1 stop28h 59m

Lambert-St Louis

Mon 30/6

06:29-07:05

1 stop33h 36m

$2,518

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Fri 11/4

09:10-23:16

1 stop29h 06m

Lambert-St Louis

Sun 27/4

06:15-07:05

1 stop33h 50m

$2,562

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Mon 18/8

09:55-23:39

3 stops28h 44m

Lambert-St Louis

Sat 8/11

13:30-08:45

3 stops26h 15m

$3,186

SydneySt. Louis

SYD - STL

SYDSTL

Sydney Kingsford Smith

Tue 1/4

21:55-14:42

3 stops56h 47m

Lambert-St Louis

Mon 30/6

08:10-19:00

3 stops43h 50m

$4,007

Flights are sorted by cheapest return flights first.

Deals found on 20/2

Best time to book a flight from Sydney to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Sydney 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 Sydney to St. Louis

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

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

Find hourly flight availability from Sydney to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 21 February 2025.

It’s typically best to fly out from Sydney to St. Louis in the morning. Doing so could potentially save you 32% on the flight price compared to flying in the afternoon, which is usually more expensive.

Rainfall in St. Louis by month

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

In terms of precipitation, rainfall in St. Louis ranges from 56.0 - 119.0 inches per month. May is typically the wettest month, when rainfall can reach 119.0 mm. February is typically the driest time to visit St. Louis when rainfall is around 56.0 mm.

Temperature in St. Louis by month

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

If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 27.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 0.0 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 21 February 2025.
Qantas Airways
7.4
Good
814 reviews
Check prices

Entertainment

7.1

Boarding

7.6

Food

6.9

Comfort

7.4

Overall

7.4

Crew

8.1

Reviews

1 / 20

6.0
Good

Anonymous,Feb 2025

SYD - DFW

They need to improve the check-in kiosks and the in-flight special meals. Never had a smooth boarding process with Qantas. The special meals look like they're prepared at the last minute without much thought.

Qantas Airways
7.4
Good
814 reviews
Qantas Airways
7.4
Good
814 reviews
Check prices

Entertainment

7.1

Boarding

7.6

Food

6.9

Comfort

7.4

Overall

7.4

Crew

8.1

Reviews

1 / 20

6.0
Good

Anonymous,Feb 2025

SYD - DFW

They need to improve the check-in kiosks and the in-flight special meals. Never had a smooth boarding process with Qantas. The special meals look like they're prepared at the last minute without much thought.

United Airlines
7.4
Good
8,759 reviews
Qantas Airways
7.4
Good
814 reviews
Check prices

Entertainment

7.1

Boarding

7.6

Food

6.9

Comfort

7.4

Overall

7.4

Crew

8.1

Reviews

1 / 20

6.0
Good

Anonymous,Feb 2025

SYD - DFW

They need to improve the check-in kiosks and the in-flight special meals. Never had a smooth boarding process with Qantas. The special meals look like they're prepared at the last minute without much thought.

Turkish Airlines
7.3
Good
3,832 reviews
Qantas Airways
7.4
Good
814 reviews
Check prices

Entertainment

7.1

Boarding

7.6

Food

6.9

Comfort

7.4

Overall

7.4

Crew

8.1

Reviews

1 / 20

6.0
Good

Anonymous,Feb 2025

SYD - DFW

They need to improve the check-in kiosks and the in-flight special meals. Never had a smooth boarding process with Qantas. The special meals look like they're prepared at the last minute without much thought.

American Airlines
7.2
Good
10,000 reviews
Qantas Airways
7.4
Good
814 reviews
Check prices

Entertainment

7.1

Boarding

7.6

Food

6.9

Comfort

7.4

Overall

7.4

Crew

8.1

Reviews

1 / 20

6.0
Good

Anonymous,Feb 2025

SYD - DFW

They need to improve the check-in kiosks and the in-flight special meals. Never had a smooth boarding process with Qantas. The special meals look like they're prepared at the last minute without much thought.

Air Canada
7.0
Good
8,756 reviews
Qantas Airways
7.4
Good
814 reviews
Check prices

Entertainment

7.1

Boarding

7.6

Food

6.9

Comfort

7.4

Overall

7.4

Crew

8.1

Reviews

1 / 20

6.0
Good

Anonymous,Feb 2025

SYD - DFW

They need to improve the check-in kiosks and the in-flight special meals. Never had a smooth boarding process with Qantas. The special meals look like they're prepared at the last minute without much thought.

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.

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

    Flying on United Airlines is currently your cheapest option to St. Louis, with prices starting at $1,720. Additional round-trip tickets that might be worth considering are offered by Air Canada and American Airlines, with the lowest prices starting at $1,736 and $2,518, respectively. Users have found that United Airlines is 22% cheaper than the other options available to this destination.

  • 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.

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.
Sydney to Kansas City flights

Top 4 airlines flying from Sydney to St. Louis

Discover the top 4 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 647,157 searches. Data last updated 21 February 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$1,500Average$2,476FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
American AirlinesCheapest$1,512Average$2,567FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Air CanadaCheapest$1,543Average$1,994FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Qantas AirwaysCheapest$1,767Average$2,278FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights

Fly with Cheapflights

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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?

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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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