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Cheap flights from Perth to St. Louis

PER — STL
15 ott — 22 ott1
1 adult
1 adult, Economy

Cheap flight deals from Perth to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Perth (PER) 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 15 settembre 2025.

Popular in

July

Cheapest in

August

Average price

$2,608
High demand for flights, 0% potential price rise
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Cheapest flight prices on average. 2% potential price decrease ($98 potential savings vs. average return price).
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Average for round-trip flights in September 2025
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Best time to book a flight from Perth to St. Louis

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

Cheapflights Insights

Everything you need to know about your flight from Perth to St. Louis

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

Find hourly flight availability from Perth 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 15 settembre 2025.

It’s optimal to fly from Perth to St. Louis in the morning. By choosing this option you can save up to 2% on the cost of your flight, compared to a flight at midday.

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 15 settembre 2025.
Check out reviews from past customers who have flown with Qantas Airways from Perth to St. Louis to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Qantas Airways
7.5
Good
905 reviews
Check prices

Comfort

7.5

Entertainment

7.2

Overall

7.5

Crew

8.2

Boarding

7.7

Food

6.9

Reviews

1 / 20
2.0
Mediocre

Anonymous,July 2025

MEL - SYD

Flight cancelled 2hours before take off after checking in. Booked by airline on flight 6 hours later. No compensation or vouchers till we asked just before the flight took off.
Qantas Airways
7.5
Good
905 reviews
Qantas Airways
7.5
Good
905 reviews
Check prices

Comfort

7.5

Entertainment

7.2

Overall

7.5

Crew

8.2

Boarding

7.7

Food

6.9

Reviews

1 / 20
2.0
Mediocre

Anonymous,July 2025

MEL - SYD

Flight cancelled 2hours before take off after checking in. Booked by airline on flight 6 hours later. No compensation or vouchers till we asked just before the flight took off.

Related info for your journey

Find useful and relevant information for your journey from Perth 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 is the cheapest airline to fly from Perth to St. Louis round-trip?

    According to our current data, Qantas Airways ($1,840), offers the cheapest pricing from Perth to St. Louis. Qantas Airways is 32% cheaper than the average price of flights available within the next 90 days to this destination.

  • Can I find deals for flights from Perth to St. Louis that include hotel bookings?

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

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

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

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

    Yes. Cheapflights offers flight deals from Perth 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.

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Top airline flying from Perth to St. Louis

Discover the top airline that operate flights from Perth 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 15 settembre 2025.
AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$1,840Average$2,914FlexibilityNo cancel feeOn-time74%
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Fly with Cheapflights

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How does Cheapflights help users find flights from Perth to St. Louis?

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

Cheapflights helps you find that perfect flight to St. Louis from Perth by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

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

Need flexible booking options for your flight to St. Louis from Perth? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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

Yes! Start tracking prices for Perth to St. Louis flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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