When did momondo last update prices for flights from Lambert-St Louis Airport to Perth Airport?

Prices for flights from Lambert-St Louis Airport to Perth Airport are refreshed on a daily basis.

How old do you have to be to fly from Lambert-St Louis Airport to Perth Airport?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Lambert-St Louis Airport to Perth Airport.

What documentation or ID do you need to fly to Perth Airport?

The travel and health documents you'll need for your trip to Perth Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Perth Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$1,473 Cheap Flights from St. Louis to Perth in 2025/26

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Find the cheapest flights from St. Louis to Perth

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Cheap round-trip flights

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10:04 am - 6:55 amSTL-PER

30h 51m2 stops

12:25 am - 11:48 pmPER-STL

37h 23m2 stops

$1,473Cathay Pacific

Find Deal

Sat, Feb 28 - Tue, Mar 3

7:04 am - 9:00 pmSTL-PER

47h 56m2 stops

5:45 pm - 2:47 pmPER-STL

35h 02m2 stops

$1,689Qantas Airways

Find Deal

Thu, Jan 8 - Thu, Jan 15

11:46 am - 11:15 amSTL-PER

33h 29m2 stops

10:20 am - 11:48 pmPER-STL

27h 28m2 stops

$1,729Qantas Airways

Find Deal

Sat, Feb 28 - Wed, Mar 4

11:46 am - 7:45 amSTL-PER

29h 59m2 stops

10:20 am - 11:48 pmPER-STL

27h 28m2 stops

$1,730Qantas Airways

Find Deal

Sat, Feb 28 - Wed, Mar 4

11:55 am - 7:45 amSTL-PER

29h 50m2 stops

5:45 pm - 2:47 pmPER-STL

35h 02m2 stops

$1,783Qantas Airways

Find Deal

Wed, Jan 7 - Wed, Jan 14

7:04 am - 9:00 pmSTL-PER

47h 56m2 stops

11:55 pm - 3:29 pmPER-STL

53h 34m3 stops

$2,019Multiple Airlines

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Thu, Jan 8 - Thu, Jan 15

7:04 am - 6:55 amSTL-PER

33h 51m2 stops

12:25 am - 11:59 pmPER-STL

61h 34m2 stops

$2,125Cathay Pacific

Find Deal

Thu, Jan 8 - Wed, Jan 14

6:00 am - 6:55 amSTL-PER

34h 55m2 stops

12:25 am - 11:59 pmPER-STL

37h 34m2 stops

$2,199Multiple Airlines

Find Deal

Wed, Jan 7 - Tue, Jan 13

7:04 am - 6:55 amSTL-PER

33h 51m2 stops

8:30 am - 1:54 pmPER-STL

43h 24m3 stops

$2,232Multiple Airlines

Find Deal

Wed, Jan 7 - Wed, Jan 14

4:05 pm - 2:30 pmSTL-PER

56h 25m3 stops

10:55 pm - 3:29 pmPER-STL

54h 34m3 stops

$2,522Air Canada

Find Deal

Sat, Feb 28 - Wed, Mar 4

Qantas Airways flights from St. Louis to Perth

Our best Qantas Airways deals on St. Louis to Perth flight tickets

Qantas Airways

Jan 8

STL7:04 amLambert-St Louis

47h 56m

2 stops

PER9:00 pmPerth

Jan 15

PER5:45 pmPerth

35h 02m

2 stops

STL2:47 pmLambert-St Louis

$1,689

Find similar

Qantas Airways

Feb 28

STL11:46 amLambert-St Louis

33h 29m

2 stops

PER11:15 amPerth

Mar 4

PER10:20 amPerth

27h 28m

2 stops

STL11:48 pmLambert-St Louis

$1,729

Find similar

Qantas Airways

Feb 28

STL11:46 amLambert-St Louis

29h 59m

2 stops

PER7:45 amPerth

Mar 4

PER10:20 amPerth

27h 28m

2 stops

STL11:48 pmLambert-St Louis

$1,730

Find similar

Cathay Pacific flights from St. Louis to Perth

Our best Cathay Pacific deals on St. Louis to Perth flight tickets

Cathay Pacific

Feb 28

STL10:04 amLambert-St Louis

30h 51m

2 stops

PER6:55 amPerth

Mar 3

PER12:25 amPerth

37h 23m

2 stops

STL11:48 pmLambert-St Louis

$1,473

Find similar

Cathay Pacific

Jan 8

STL7:04 amLambert-St Louis

33h 51m

2 stops

PER6:55 amPerth

Jan 14

PER12:25 amPerth

61h 34m

2 stops

STL11:59 pmLambert-St Louis

$2,125

Find similar

Fly from

Fly to

Route

Depart

Return

Price

St. LouisPerth

STL - PER

STLPER

Lambert-St Louis

Sat 2/28

10:04 am-6:55 am

2 stops30h 51m

Perth

Tue 3/3

12:25 am-11:48 pm

2 stops37h 23m

$1,473

St. LouisPerth

STL - PER

STLPER

Lambert-St Louis

Thu 1/8

7:04 am-9:00 pm

2 stops47h 56m

Perth

Thu 1/15

5:45 pm-2:47 pm

2 stops35h 02m

$1,689

St. LouisPerth

STL - PER

STLPER

Lambert-St Louis

Sat 2/28

11:46 am-11:15 am

2 stops33h 29m

Perth

Wed 3/4

10:20 am-11:48 pm

2 stops27h 28m

$1,729

St. LouisPerth

STL - PER

STLPER

Lambert-St Louis

Sat 2/28

11:46 am-7:45 am

2 stops29h 59m

Perth

Wed 3/4

10:20 am-11:48 pm

2 stops27h 28m

$1,730

St. LouisPerth

STL - PER

STLPER

Lambert-St Louis

Wed 1/7

11:55 am-7:45 am

2 stops29h 50m

Perth

Wed 1/14

5:45 pm-2:47 pm

2 stops35h 02m

$1,783

St. LouisPerth

STL - PER

STLPER

Lambert-St Louis

Thu 1/8

7:04 am-9:00 pm

2 stops47h 56m

Perth

Thu 1/15

11:55 pm-3:29 pm

3 stops53h 34m

$2,019

St. LouisPerth

STL - PER

STLPER

Lambert-St Louis

Thu 1/8

7:04 am-6:55 am

2 stops33h 51m

Perth

Wed 1/14

12:25 am-11:59 pm

2 stops61h 34m

$2,125

St. LouisPerth

STL - PER

STLPER

Lambert-St Louis

Wed 1/7

6:00 am-6:55 am

2 stops34h 55m

Perth

Tue 1/13

12:25 am-11:59 pm

2 stops37h 34m

$2,199

St. LouisPerth

STL - PER

STLPER

Lambert-St Louis

Wed 1/7

7:04 am-6:55 am

2 stops33h 51m

Perth

Wed 1/14

8:30 am-1:54 pm

3 stops43h 24m

$2,232

St. LouisPerth

STL - PER

STLPER

Lambert-St Louis

Sat 2/28

4:05 pm-2:30 pm

3 stops56h 25m

Perth

Wed 3/4

10:55 pm-3:29 pm

3 stops54h 34m

$2,522

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

How to get the cheapest flight ticket from St. Louis to Perth

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Perth?

The cheapest day to depart on your flight to Perth is on a Thursday when prices can be found for as low as $1,649. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to Perth is Wednesday, with ticket prices averaging around $1,955.

What is the cheapest time of day to depart on your flight to Perth?

At noon is the cheapest time of day to fly from St. Louis to Perth when you can find flight prices for as low as $1,804. Flying to Perth at noon is an ideal time because this is during off-peak travel hours. Try not to purchase tickets in the evening because they tend to be around $3,392. Of course, these prices can vary depending on the time of year and what airport you fly to.

When to book flights from St. Louis to Perth

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to Perth according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap St. Louis to Perth (STL to PER) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Perth

Fastest flight time	33h 29m
Direct flights	None

The fastest flight from St. Louis to Perth takes 33h 29m

There are no direct flights from St. Louis to Perth. There are no popular flight routes from St. Louis to Perth.

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How far is Lambert-St Louis to Perth by plane?
Lambert-St Louis and Perth are 10895.1 mi apart from one another. By plane, this route typically takes 29h 50m.
When did momondo last update prices for flights from Lambert-St Louis Airport to Perth Airport?
Prices for flights from Lambert-St Louis Airport to Perth Airport are refreshed on a daily basis.
How old do you have to be to fly from Lambert-St Louis Airport to Perth Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Lambert-St Louis Airport to Perth Airport.
What documentation or ID do you need to fly to Perth Airport?
The travel and health documents you'll need for your trip to Perth Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Perth Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

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Scarborough

Waikiki

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Perth?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Perth from St. Louis.

Can I find flights from St. Louis to Perth with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Perth from St. Louis with this policy.

How can momondo help me find flights from St. Louis to Perth?

Once you have performed a search for St. Louis to Perth flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from St. Louis to Perth right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of St. Louis to Perth flights. All you need is a valid email address and we will do the rest; it is that quick and easy.