PER - STL

Find Cheap Flights from Perth to St. Louis – Compare and Save

1 adult
1 adult, Economy, 0 bags

Save 26% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Everything you should know

When to travel
October
Cheapest • 29% price drop
May
Most popular
Good to know
+1
Good to know
+1
Start a new search
KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you enjoy your trip to St. Louis!
Flight Deals
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

Multiple Airlines Logo
PER  Perth-STL St. Louis Lambert Airport
28175 kmmulti-stop
Multiple Airlines Logo
STL  St. Louis Lambert Airport-PER Perth
28175 kmmulti-stop
Multiple 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 with more confidence.

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

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

Find deals

Key details for Perth to St. Louis flights

The most popular month to fly with an average 12% increase in travellers.

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 answers about this route, including flight times, airports, airlines, and booking tips.

  • 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.

  • 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.

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

    Return flights from Perth to St. Louis range from $2,066 to $2,538, with an average of $2,281 over the past 12 months. Anything below $2,066 counts as a good deal.

  • 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 averaging $112 for economy cars. Top options include:

    • Hertz
    • Budget
    • Alamo
    • Enterprise Rent-A-Car
    • Payless

  • 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).

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

    Yes. Flexible dates can save you up to 38% on flights from Perth to St. Louis. Wednesday is the cheapest departure day at $1,906 return on average, while Thursday is the most expensive at $3,045, a difference of $1,140.

    KAYAK's flexible dates feature shows options up to three days before and after your selected dates, making it easier to compare nearby fares.

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

    St. Louis is 14 hours behind Perth (Central Time vs Western Australia Time). Plan for the time shift when scheduling connections or first-day activities.

  • 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.

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 and avoid flying on Thursday. On this route, Wednesday flights average $1,906, about $1,140 less than Thursday fares (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 $1,620 return in that month – typically $1,392 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.

    • Renaissance St. Louis Airport Hotel
    • Drury Inn & Suites St. Louis Airport
    • 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