$846 Cheap flight deals from St. Louis (STL) to Perth (PER)

Earn rewards on top of your airline miles with Orbitz Rewards

Many airlines offer flexible change policies

Sign up to receive text alerts about your trip

Airfares from $846 One Way, $1,425 Round Trip from St. Louis to Perth

Prices starting at $1,425 for return flights and $846 for one-way flights to Perth were the cheapest prices found within the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply.

Mon, Oct 20 - Mon, Oct 27
STL
St. Louis
PER
Perth
$1,425 Roundtrip, found 1 hour ago
$1,425
Roundtrip
found 1 hour ago
Select Cathay Pacific flight, departing Mon, Oct 20 from St. Louis to Perth, returning Mon, Oct 27, priced at $1,425 found 1 hour ago
Tue, Oct 21 - Wed, Nov 12
STL
St. Louis
PER
Perth
$1,425 Roundtrip, found 3 days ago
$1,425
Roundtrip
found 3 days ago
Select Cathay Pacific flight, departing Tue, Oct 21 from St. Louis to Perth, returning Wed, Nov 12, priced at $1,425 found 3 days ago
Mon, Oct 27 - Tue, Jan 20
STL
St. Louis
PER
Perth
$1,434 Roundtrip, found 2 hours ago
$1,434
Roundtrip
found 2 hours ago
Select Cathay Pacific flight, departing Mon, Oct 27 from St. Louis to Perth, returning Tue, Jan 20, priced at $1,434 found 2 hours ago
Mon, Mar 2 - Mon, Apr 13
STL
St. Louis
PER
Perth
$1,434 Roundtrip, found 2 days ago
$1,434
Roundtrip
found 2 days ago
Select Cathay Pacific flight, departing Mon, Mar 2 from St. Louis to Perth, returning Mon, Apr 13, priced at $1,434 found 2 days ago
Tue, Oct 21 - Wed, Nov 12
STL
St. Louis
PER
Perth
$1,444 Roundtrip, found 3 days ago
$1,444
Roundtrip
found 3 days ago
Select Cathay Pacific flight, departing Tue, Oct 21 from St. Louis to Perth, returning Wed, Nov 12, priced at $1,444 found 3 days ago

More About Flying To Perth from St. Louis

Route Information for Flights from St. Louis to Perth

Origin Airport IATA Code
STL
Destination Airport IATA Code
PER
Distance
Direct Flight Airlines
Earliest Flight Arrival
Latest Flight Arrival

St. Louis to Perth

For guaranteed low prices on flights from St. Louis to Perth, search no further than Orbitz. Planning the perfect trip is simple with Orbitz; our range of bargain holiday packages and cutting edge mobile tools makes it quick and easy.

Mobile Movers

Never miss out on bargain prices on St. Louis to Perth flights with free mobile apps for Android and iPhone. On the road? Not a problem – just use m.orbitz.com in your mobile browser to book flights from St. Louis to Perth or check the latest details of your flights.

All-in-One

With Orbitz’s Display Matrix, it is so easy to book your perfect vacation package. Just add in flights from St. Louis to Perth, decide if you want hotels and car rental included and click the button! Orbitz’s Display Matrix clearly shows all the deals and great savings available, including extra discounts, such as free nights.

Cheap Flights Equals Extra Miles

Enjoy great deals on St. Louis to Perth flights and rack up those air miles at the same time! With Orbitz you just add in your frequent flyer number when asked and your qualifying miles are instant. Store your number to your account profile and next time you book your miles will be automatically added.

Safeguard with our Low Price Guarantee

Feel confident when you book your St. Louis to Perth flights, a great hotel or a full vacation package that you are getting the best deal around. Orbitz’s low price guarantee assures you of peace of mind.

Frequently asked questions

What is the cheapest day of the week to fly?
Consider flying out early in the week to save on your airfare. Orbitz data from 2021 shows that Monday is the cheapest day to depart, followed by Tuesday. Saturday showed the highest average ticket prices likely because many travelers prefer to start their vacation on a weekend.
What is the cheapest month to fly?
We won't keep you guessing, according to Orbitz data from 2021, the cheapest month to fly is February. Perfect for those who need a weekend getaway, or just a break from it all in the shortest month of the year. Be aware that the most expensive time to fly is during the height of summer in July, and in the holiday month of December.*According to flight demand on Orbitz.com from January to December 2021. Savings are subject to change based on departure location, date and destination.

More Destinations

More Destinations

Fare, taxes & fees: Fares include all taxes and fees, except baggage fees. Rates shown reflect fares found by other Orbitz users over the past 7 days. Due to rapidly changing airline prices & seat availability, these fares may no longer be available.

Refunds/changes/cancellations: Itinerary changes, if permitted for the fare, will have a $30 service fee charged by Orbitz. Additional airline charges may apply.

Other conditions: Schedules, fares and rules are subject to change without notice. Seats are limited and may not be available on all flights/dates or in all markets. Lower fares may be available. Fares will not be honored retroactively or in exchange for any wholly/partially unused ticket. Tickets are non-transferable and non-refundable. Fare rules are provided for the selected itinerary before booking.