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.

$1,501 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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7:00 am - 10:55 pmSTL-PER

49h 55m2 stops

8:30 am - 4:47 pmPER-STL

46h 17m2 stops

$1,501Cathay Pacific

Find Deal

Thu, Nov 13 - Mon, Nov 17

7:00 am - 6:55 amSTL-PER

33h 55m2 stops

12:25 am - 10:58 pmPER-STL

36h 33m2 stops

$1,653Cathay Pacific

Find Deal

Thu, Nov 13 - Sun, Nov 16

5:50 pm - 12:05 pmSTL-PER

28h 15m2 stops

10:20 am - 11:59 pmPER-STL

27h 39m2 stops

$1,814Qantas Airways

Find Deal

Fri, Nov 28 - Fri, Jan 9

8:40 am - 6:55 amSTL-PER

32h 15m2 stops

12:25 am - 11:59 pmPER-STL

61h 34m2 stops

$1,910Cathay Pacific

Find Deal

Fri, Nov 28 - Thu, Jan 8

8:39 am - 6:55 amSTL-PER

32h 16m2 stops

12:25 am - 10:51 pmPER-STL

36h 26m3 stops

$2,086Multiple Airlines

Find Deal

Sat, Nov 29 - Thu, Jan 8

8:39 am - 6:55 amSTL-PER

32h 16m2 stops

12:25 am - 11:59 pmPER-STL

37h 34m2 stops

$2,313Multiple Airlines

Find Deal

Sat, Nov 29 - Thu, Jan 8

6:44 pm - 7:45 amSTL-PER

47h 01m2 stops

5:30 am - 7:29 pmPER-STL

27h 59m2 stops

$2,399Qantas Airways

Find Deal

Sat, Dec 27 - Thu, Jan 8

5:50 pm - 10:55 pmSTL-PER

39h 05m2 stops

12:25 am - 10:51 pmPER-STL

36h 26m3 stops

$2,475Multiple Airlines

Find Deal

Fri, Nov 28 - Thu, Jan 8

3:59 pm - 6:15 pmSTL-PER

36h 16m2 stops

10:45 pm - 2:47 pmPER-STL

54h 02m3 stops

$2,625Qantas Airways

Find Deal

Sat, Nov 29 - Fri, Jan 9

11:05 am - 11:20 amSTL-PER

34h 15m3 stops

10:30 pm - 4:43 pmPER-STL

32h 13m3 stops

$4,138Air Canada

Find Deal

Sat, Dec 27 - Thu, Jan 8

Cathay Pacific flights from St. Louis to Perth

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

Cathay Pacific

Nov 13

STL7:00 amLambert-St Louis

49h 55m

2 stops

PER10:55 pmPerth

Nov 17

PER8:30 amPerth

46h 17m

2 stops

STL4:47 pmLambert-St Louis

$1,501

Find similar

Cathay Pacific

Nov 13

STL7:00 amLambert-St Louis

33h 55m

2 stops

PER6:55 amPerth

Nov 16

PER12:25 amPerth

36h 33m

2 stops

STL10:58 pmLambert-St Louis

$1,653

Find similar

Cathay Pacific

Nov 28

STL8:40 amLambert-St Louis

32h 15m

2 stops

PER6:55 amPerth

Jan 8

PER12:25 amPerth

61h 34m

2 stops

STL11:59 pmLambert-St Louis

$1,910

Find similar

Qantas Airways flights from St. Louis to Perth

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

Qantas Airways

Nov 28

STL5:50 pmLambert-St Louis

28h 15m

2 stops

PER12:05 pmPerth

Jan 9

PER10:20 amPerth

27h 39m

2 stops

STL11:59 pmLambert-St Louis

$1,814

Find similar

Qantas Airways

Dec 27

STL6:44 pmLambert-St Louis

47h 01m

2 stops

PER7:45 amPerth

Jan 8

PER5:30 amPerth

27h 59m

2 stops

STL7:29 pmLambert-St Louis

$2,399

Find similar

Qantas Airways

Nov 29

STL3:59 pmLambert-St Louis

36h 16m

2 stops

PER6:15 pmPerth

Jan 9

PER10:45 pmPerth

54h 02m

3 stops

STL2:47 pmLambert-St Louis

$2,625

Find similar

Fly from

Fly to

Route

Depart

Return

Price

St. LouisPerth

STL - PER

STLPER

Lambert-St Louis

Thu 11/13

7:00 am-10:55 pm

2 stops49h 55m

Perth

Mon 11/17

8:30 am-4:47 pm

2 stops46h 17m

$1,501

St. LouisPerth

STL - PER

STLPER

Lambert-St Louis

Thu 11/13

7:00 am-6:55 am

2 stops33h 55m

Perth

Sun 11/16

12:25 am-10:58 pm

2 stops36h 33m

$1,653

St. LouisPerth

STL - PER

STLPER

Lambert-St Louis

Fri 11/28

5:50 pm-12:05 pm

2 stops28h 15m

Perth

Fri 1/9

10:20 am-11:59 pm

2 stops27h 39m

$1,814

St. LouisPerth

STL - PER

STLPER

Lambert-St Louis

Fri 11/28

8:40 am-6:55 am

2 stops32h 15m

Perth

Thu 1/8

12:25 am-11:59 pm

2 stops61h 34m

$1,910

St. LouisPerth

STL - PER

STLPER

Lambert-St Louis

Sat 11/29

8:39 am-6:55 am

2 stops32h 16m

Perth

Thu 1/8

12:25 am-10:51 pm

3 stops36h 26m

$2,086

St. LouisPerth

STL - PER

STLPER

Lambert-St Louis

Sat 11/29

8:39 am-6:55 am

2 stops32h 16m

Perth

Thu 1/8

12:25 am-11:59 pm

2 stops37h 34m

$2,313

St. LouisPerth

STL - PER

STLPER

Lambert-St Louis

Sat 12/27

6:44 pm-7:45 am

2 stops47h 01m

Perth

Thu 1/8

5:30 am-7:29 pm

2 stops27h 59m

$2,399

St. LouisPerth

STL - PER

STLPER

Lambert-St Louis

Fri 11/28

5:50 pm-10:55 pm

2 stops39h 05m

Perth

Thu 1/8

12:25 am-10:51 pm

3 stops36h 26m

$2,475

St. LouisPerth

STL - PER

STLPER

Lambert-St Louis

Sat 11/29

3:59 pm-6:15 pm

2 stops36h 16m

Perth

Fri 1/9

10:45 pm-2:47 pm

3 stops54h 02m

$2,625

St. LouisPerth

STL - PER

STLPER

Lambert-St Louis

Sat 12/27

11:05 am-11:20 am

3 stops34h 15m

Perth

Thu 1/8

10:30 pm-4:43 pm

3 stops32h 13m

$4,138

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

Direct flights	None

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 27h 21m.
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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Fremantle

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.