PER - STL

$2,304 Find Cheap Flights from Perth to St. Louis – Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest return flight
$2,304
Typical prices: $1,995-$2,614
Qantas Airways
Thu 1/11Thu 8/11
PER - STL • 2 stops
When to travel
October
Cheapest • 29% price drop
September
Most popular
Good to know
+1
Good to know
+1
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We hope you enjoy your trip to St. Louis!
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Booking Insights
Flight Deals

Cheap Flights from Perth to St. Louis (PER-STL)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Perth to St. Louis

Sun, 1 Nov - Sun, 8 Nov
Qantas Airways Logo
23:10 - 12:28PER  Perth-STL Lambert-St Louis
27h 18m2 stops Brisbane Dallas/Fort Worth
Qantas Airways Logo
08:10 - 14:20STL  Lambert-St Louis-PER Perth
40h 10m2 stops Los Angeles Sydney Kingsford Smith
$2,304Qantas Airways
Sun, 1 Nov - Sun, 8 Nov
United Airlines Logo
22:55 - 18:05PER  Perth-STL Lambert-St Louis
33h 10m3 stops Sydney Kingsford Smith Los Angeles San Francisco
United Airlines Logo
17:55 - 11:20STL  Lambert-St Louis-PER Perth
51h 25m2 stops Houston George Bush Intcntl Sydney Kingsford Smith
$2,457United Airlines
Sun, 1 Nov - Sun, 8 Nov
Multiple Airlines Logo
22:55 - 18:05PER  Perth-STL Lambert-St Louis
33h 10m3 stops Sydney Kingsford Smith Los Angeles San Francisco
Multiple Airlines Logo
11:35 - 12:30STL  Lambert-St Louis-PER Perth
34h 55m3 stops Chicago O'Hare Intl Los Angeles Sydney Kingsford Smith
$3,242Multiple Airlines
Booking Insights

Price, demand, and travel trends for Perth to St. Louis flights

Use KAYAK data on prices, travel dates, airlines, and seasonal trends to compare options and book flights from Perth to St. Louis with more confidence.

How much is a return flight from Perth to St. Louis?

Return flights from Perth to St. Louis start at $2,304. Prices are typical for this route right now, with typical return fares ranging from $1,995 to $2,614. The lowest price found in the past 5 days was $2,304 on Qantas Airways.

What's the cheapest day of the week to fly from Perth to St. Louis?

Wednesday is the cheapest day of the week to fly from Perth to St. Louis and is 17% cheaper than the average day. Thursday is the most expensive day with flight prices 33% higher than average. Based on deals found by KAYAK users in the last 12 months.

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Key details for Perth to St. Louis flights

Low season

December
Best time to beat the crowds but there is an average 19% increase in price.
Most popular time to fly (2% more expensive on average)

When to book flights from Perth to St. Louis

Are your dates flexible? Find out the best times to travel from Perth to St. Louis based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price

Your Perth to St. Louis flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines, and booking questions.

  • Which airports can I use when flying from Perth to St. Louis?

    Flights from Perth to St. Louis usually depart from Perth (PER) and arrive at Lambert-St Louis (STL).

  • Which cabin classes can I book on flights from Perth to St. Louis?

    Only Economy class is available on flights from Perth to St. Louis.

  • Can I save money by using flexible dates for flights from Perth to St. Louis?

    Yes. Being flexible with your travel dates can save you up to 38% on the Perth to St. Louis route. Wednesday is the cheapest departure day at $1,841 return on average, while Thursday is the most expensive at $2,942, a difference of $1,101. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • What popular places can I visit in St. Louis?

    America's Center Convention Complex is one of the most viewed places in St. Louis on KAYAK.

  • Do I need a passport to fly from Perth to St. Louis?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • Have flight prices from Perth to St. Louis changed much recently?

    Yes. Based on fares seen in the past 5 days, return prices on this route varied from about $2,304 to $3,242. That means the highest observed fare was about 40% higher than the lowest one.

  • What is the time difference between Perth and St. Louis?

    St. Louis is 13 hours behind Perth (Central Time vs Western Australia Time). Plan for the time shift when scheduling connections or first-day activities.

  • Which car hire options are available at Lambert-St Louis Airport (STL)?

    Lambert-St Louis Airport (STL) hosts 5 major car hire companies, with daily rates starting from around $43 for economy cars. Top options include:
    • Hertz
    • Budget
    • Alamo
    • Enterprise Rent-A-Car
    • Payless

  • How much should I expect to pay for a Perth to St. Louis flight?

    Return flights from Perth to St. Louis range from $1,995 to $2,614, with an average of $2,204 over the past 12 months. Anything below $1,995 counts as a good deal.

Your guide to booking Perth to St. Louis flights

Get tips on when to book, when to fly, and what to know before your trip.
  • If your dates are flexible, aim for a Wednesday departure instead of Thursday. On this route, Wednesday flights average $1,841 – about $1,101 less than Thursday (37% savings) based on the last 12 months.
  • If you can choose when to travel, plan your Perth to St. Louis trip for October. Fares historically average $1,565 return in that month – typically $1,345 less than the most expensive month, which is June (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Lambert-St Louis Airport.
    - Drury Inn & Suites St. Louis Airport
    - Renaissance St. Louis Airport Hotel
    - DoubleTree by Hilton St. Louis Airport

More options for your flight from Perth to St. Louis

Complete your trip to St. Louis with a hotel stay or car hire

Car hire in St. Louis
Hotels in St. Louis