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$1,049+ Cheap flights from St. Louis (STL) to Sydney, NS (YQY)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/4. Fares are subject to change and may not be available on all flights or dates of travel.
STL — YQY
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
1 adult, Economy
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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 (YQY). 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 February 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,049
(United)
Provider with most accurate pricing for Lambert-St Louis-Sydney flight deals.
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Provider most trusted by Cheapflights users for Lambert-St Louis-Sydney flights.
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From Lambert-St Louis to Sydney
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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 February 20, 2025.

This United deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/45:19 pmSTL - YQY
2 stops20h 28mMultiple Airlines
Mon 7/74:30 pmYQY - STL
3 stops25h 12mMultiple Airlines
Deal found 2/19$1,049
This Air Canada deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/44:05 pmSTL - YQY
1 stop5h 48mAir Canada
Mon 7/74:30 pmYQY - STL
2 stops8h 15mAir Canada
Deal found 2/19$1,075

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 2,558,603 searches. Data last updated February 20, 2025.

Fly from

St. Louis

Fly to

Sydney

Route

Depart

Return

Price

St. LouisSydney

STL - YQY

STLYQY

Lambert-St Louis

Fri 7/4

5:19 pm-3:47 pm

2 stops20h 28m

Sydney

Mon 7/7

4:30 pm-3:42 pm

3 stops25h 12m

$1,049

St. LouisSydney

STL - YQY

STLYQY

Lambert-St Louis

Fri 7/4

4:05 pm-11:53 pm

1 stop5h 48m

Sydney

Mon 7/7

4:30 pm-10:45 pm

2 stops8h 15m

$1,075

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/19

  • Most accurate provider: When it comes to deals on St. Louis-Sydney, Nova Scotia 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, Nova Scotia flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Sydney, Nova Scotia flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on St. Louis-Sydney, Nova Scotia 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, Nova Scotia 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.

Rainfall in Sydney by month

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

In terms of precipitation, rainfall in Sydney, Nova Scotia ranges from 3.5 - 6.6 inches per month. December is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit Sydney, Nova Scotia when rainfall is around 3.5 in.

Temperature in Sydney by month

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

If weather is an important factor for your trip to Sydney, Nova Scotia, 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 64.4 F. Travelers looking to avoid the cold should look outside of February, when temperatures are typically at their lowest (around 21.2 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 February 20, 2025.
Air Canada
7.0
Good
8,748 reviews

Entertainment

6.8

Crew

7.8

Food

6.2

Comfort

7.0

Boarding

7.3

Overall

7.0

Reviews

1 / 20

2.0
Mediocre

Anonymous,Nov 2024

YYT - YHZ

No leg room plane was so small no room to move no room to sit squat in your seat my legs were so swollen up at the end of flight

Air Canada
7.0
Good
8,748 reviews
Air Canada
7.0
Good
8,748 reviews

Entertainment

6.8

Crew

7.8

Food

6.2

Comfort

7.0

Boarding

7.3

Overall

7.0

Reviews

1 / 20

2.0
Mediocre

Anonymous,Nov 2024

YYT - YHZ

No leg room plane was so small no room to move no room to sit squat in your seat my legs were so swollen up at the end of flight

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 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.

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