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

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

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

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

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

On the St. Louis to Perth route, being flexible with your departure day can save you up to 42%. Saturday is the cheapest day at $1,507 round-trip on average, while Monday is the most expensive at $2,572: a $1,065 difference. Cheaper weekend fares like these are typical of routes dominated by weekday business travel.

What popular places can I visit in Perth?

Some of the most popular sights in Perth are Elizabeth Quay, RAC Arena and Hay Street Mall. These are among the most viewed places in Perth on KAYAK.

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

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.

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

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

What car rental options are available at Perth Airport (PER)?

Perth Airport (PER) hosts 5 major car rental companies, with daily rates starting from around $12 for economy cars. Top options include: · EverythingFleet · East Coast Car Rentals · Europcar · Ace Rental Cars · Bargain Car Rentals

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

Round-trip flights from St. Louis to Perth range from $1,652 to $2,038, with an average of $1,870 over the past 12 months. Anything below $1,652 counts as a good deal.

Cheap Flights from St. Louis to Perth | KAYAK

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Cheapest round-trip

$1,451

Typical prices: $1,652-$2,038

Multiple Airlines

Thu 11/1Fri 11/16

STL - PER • 2 stops

When to travel

September

Cheapest • 26% price drop

November

Most popular

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Flight Deals

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

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

Round-trip

One-way

Recent round-trip flight deals from St. Louis to Perth

Sun, Nov 1 - Mon, Nov 16

5:29 pm - 6:55 amSTL Lambert-St Louis-PER Perth

47h 26m2 stops Chicago O'Hare Intl Hong Kong Intl

8:30 am - 6:17 pmPER Perth-STL Lambert-St Louis

47h 47m2 stops Hong Kong Intl Chicago O'Hare Intl

$1,451Multiple Airlines

Mon, Sep 28 - Fri, Oct 2

11:01 am - 6:50 amSTL Lambert-St Louis-PER Perth

30h 49m2 stops Chicago O'Hare Intl Hong Kong Intl

12:10 am - 11:59 pmPER Perth-STL Lambert-St Louis

36h 49m2 stops Hong Kong Intl Seattle/Tacoma Intl

$1,471Multiple Airlines

Thu, Sep 24 - Wed, Sep 30

5:00 am - 6:50 amSTL Lambert-St Louis-PER Perth

36h 50m2 stops Chicago O'Hare Intl Hong Kong Intl

12:10 am - 6:38 pmPER Perth-STL Lambert-St Louis

31h 28m2 stops Hong Kong Intl Seattle/Tacoma Intl

$1,496Multiple Airlines

Thu, Oct 15 - Wed, Oct 21

6:04 am - 10:40 pmSTL Lambert-St Louis-PER Perth

51h 36m2 stops Los Angeles Hong Kong Intl

12:10 am - 11:59 pmPER Perth-STL Lambert-St Louis

36h 49m2 stops Hong Kong Intl Seattle/Tacoma Intl

$1,538Multiple Airlines

Sun, Nov 1 - Mon, Nov 16

4:05 pm - 8:30 pmSTL Lambert-St Louis-PER Perth

62h 25m3 stops Toronto Pearson Intl Vancouver Intl Sydney Kingsford Smith

3:15 pm - 3:26 pmPER Perth-STL Lambert-St Louis

62h 11m3 stops Sydney Kingsford Smith Vancouver Intl Toronto Pearson Intl

$1,594Multiple Airlines

Mon, Sep 28 - Fri, Oct 2

6:29 am - 6:50 amSTL Lambert-St Louis-PER Perth

35h 21m2 stops Seattle/Tacoma Intl Hong Kong Intl

12:10 am - 11:59 pmPER Perth-STL Lambert-St Louis

36h 49m3 stops Hong Kong Intl Vancouver Intl Seattle/Tacoma Intl

$1,687Multiple Airlines

Sun, Nov 1 - Mon, Nov 16

7:05 pm - 2:45 pmSTL Lambert-St Louis-PER Perth

29h 40m2 stops San Francisco Melbourne

10:55 pm - 6:05 pmPER Perth-STL Lambert-St Louis

33h 10m3 stops Sydney Kingsford Smith Los Angeles San Francisco

$1,732United Airlines

Sun, Nov 1 - Mon, Nov 16

7:05 pm - 2:45 pmSTL Lambert-St Louis-PER Perth

29h 40m2 stops San Francisco Melbourne

10:55 pm - 6:05 pmPER Perth-STL Lambert-St Louis

33h 10m3 stops Sydney Kingsford Smith Los Angeles San Francisco

$1,733United Airlines

Thu, Sep 24 - Wed, Sep 30

6:08 pm - 10:40 pmSTL Lambert-St Louis-PER Perth

39h 32m3 stops Portland Vancouver Intl Hong Kong Intl

12:10 am - 6:38 pmPER Perth-STL Lambert-St Louis

31h 28m2 stops Hong Kong Intl Seattle/Tacoma Intl

$1,925Multiple Airlines

Mon, Nov 9 - Fri, Nov 13

11:35 am - 6:45 pmSTL Lambert-St Louis-PER Perth

41h 10m2 stops Chicago O'Hare Intl Doha Hamad Intl

10:45 pm - 10:24 pmPER Perth-STL Lambert-St Louis

37h 39m2 stops Doha Hamad Intl Chicago O'Hare Intl

$1,939Qatar Airways

Booking Insights

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

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

What is the cheapest airline to fly from St. Louis to Perth?

Qatar Airways ($1,721) and United Airlines ($1,732) are the cheapest airlines to fly round-trip from St. Louis to Perth according to KAYAK data over the last 5 days.

Find deals

Low season	August
High season	November
Cheapest flight	$1,451

Most popular time to fly with an average 9% increase in price.

Flight from St. Louis to Perth

When to book flights from St. Louis to Perth

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

Estimated round-trip price

KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

Which airports can I use when flying from St. Louis to Perth?
Flights from St. Louis to Perth usually depart from Lambert-St Louis (STL) and arrive at Perth (PER).
What cabin classes can I book on flights from St. Louis to Perth?
Only Economy Class is available on flights from St. Louis to Perth.
Can I save money by using flexible dates for flights from St. Louis to Perth?
On the St. Louis to Perth route, being flexible with your departure day can save you up to 42%. Saturday is the cheapest day at $1,507 round-trip on average, while Monday is the most expensive at $2,572: a $1,065 difference. Cheaper weekend fares like these are typical of routes dominated by weekday business travel.
What popular places can I visit in Perth?
Some of the most popular sights in Perth are Elizabeth Quay, RAC Arena and Hay Street Mall. These are among the most viewed places in Perth on KAYAK.
Do I need a passport to fly from St. Louis to Perth?
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.
What is the time difference between St. Louis and Perth?
Perth is 13 hours ahead of St. Louis (Western Australia Time vs Central Time). Plan for the time shift when scheduling connections or first-day activities.
What car rental options are available at Perth Airport (PER)?
Perth Airport (PER) hosts 5 major car rental companies, with daily rates starting from around $12 for economy cars. Top options include:
· EverythingFleet
· East Coast Car Rentals
· Europcar
· Ace Rental Cars
· Bargain Car Rentals
How much should I expect to pay for a St. Louis to Perth flight?
Round-trip flights from St. Louis to Perth range from $1,652 to $2,038, with an average of $1,870 over the past 12 months. Anything below $1,652 counts as a good deal.

If your dates can be flexible, aim for a Saturday departure instead of Monday. On this route, Saturday flights average $1,507 - about $1,065 less than Monday (41% savings) based on the last 12 months.
If you can choose when to travel, plan your St. Louis to Perth trip for September. Fares historically average $1,385 round-trip in that month - typically $1,187 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 Perth Airport.
- Sanno Marracoonda Perth Airport Hotel

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

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STL - PER

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

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When to book flights from St. Louis to Perth

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Your guide to booking St. Louis to Perth flights

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Information on your arrival and departure airports

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