How does KAYAK find such low prices on flights from Missouri to Perth?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Missouri to Perth.

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Missouri to Perth?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Perth from Missouri is likely to change within 7 days, so travelers know whether to wait or book now.

What is the Hacker Fare option on flights from Missouri to Perth?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Perth with an airline and back to Missouri with another airline.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Missouri to Perth?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Perth from Missouri up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

$917 CHEAP FLIGHTS from Missouri to Perth

Save 25% 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.

Flight Deals

Cheap Flights from Missouri to Perth

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

Round-trip

One-way

Last minute

Recent round-trip flight deals from Missouri to Perth

Mon, Nov 9 - Fri, Nov 13

7:05 pm - 12:30 pmSTL Lambert-St Louis-PER Perth

27h 25m2 stops San Francisco Brisbane

10:30 pm - 10:15 pmPER Perth-STL Lambert-St Louis

37h 45m2 stops Brisbane San Francisco

$1,644United Airlines

Mon, Nov 9 - Fri, Nov 13

7:05 pm - 12:30 pmSTL Lambert-St Louis-PER Perth

27h 25m2 stops San Francisco Brisbane

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

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

$1,648United Airlines

Wed, Dec 9 - Mon, Jan 11

8:17 am - 4:50 pmSTL Lambert-St Louis-PER Perth

42h 33m2 stops San Francisco Auckland Intl

11:45 pm - 6:17 pmPER Perth-STL Lambert-St Louis

32h 32m2 stops Melbourne San Francisco

$1,852United Airlines

Mon, Nov 9 - Fri, Nov 13

10:38 am - 6:45 pmSTL Lambert-St Louis-PER Perth

42h 07m2 stops Miami Doha Hamad Intl

10:45 pm - 9:59 pmPER Perth-STL Lambert-St Louis

37h 14m2 stops Doha Hamad Intl Dallas/Fort Worth

$2,082Qatar Airways

Mon, Nov 9 - Fri, Nov 13

10:38 am - 6:45 pmSTL Lambert-St Louis-PER Perth

42h 07m2 stops Miami Doha Hamad Intl

10:45 pm - 9:59 pmPER Perth-STL Lambert-St Louis

37h 14m2 stops Doha Hamad Intl Dallas/Fort Worth

$2,083Qatar Airways

Thu, Dec 10 - Tue, Jan 12

8:17 am - 12:30 pmSTL Lambert-St Louis-PER Perth

38h 13m2 stops San Francisco Brisbane

11:45 pm - 6:17 pmPER Perth-STL Lambert-St Louis

32h 32m2 stops Melbourne San Francisco

$2,084United Airlines

Thu, Dec 10 - Wed, Dec 30

8:17 am - 2:45 pmSTL Lambert-St Louis-PER Perth

40h 28m2 stops San Francisco Melbourne

7:20 am - 5:06 amPER Perth-STL Lambert-St Louis

35h 46m2 stops Adelaide San Francisco

$2,089United Airlines

Thu, Dec 10 - Tue, Jan 12

8:17 am - 2:45 pmSTL Lambert-St Louis-PER Perth

40h 28m2 stops San Francisco Melbourne

11:45 pm - 6:17 pmPER Perth-STL Lambert-St Louis

32h 32m2 stops Melbourne San Francisco

$2,094United Airlines

Wed, Dec 9 - Sun, Jan 10

8:10 am - 9:45 pmSTL Lambert-St Louis-PER Perth

47h 35m2 stops Los Angeles Sydney Kingsford Smith

3:25 pm - 11:36 pmPER Perth-STL Lambert-St Louis

46h 11m2 stops Brisbane Los Angeles

$2,127Qantas Airways

Wed, Dec 9 - Sat, Jan 9

8:10 am - 9:45 pmSTL Lambert-St Louis-PER Perth

47h 35m2 stops Los Angeles Sydney Kingsford Smith

6:00 am - 2:55 pmPER Perth-STL Lambert-St Louis

46h 55m2 stops Brisbane Dallas/Fort Worth

$2,133Qantas Airways

Recent last minute flight deals from Missouri to Perth

Sun, Nov 1 - Mon, Nov 16

8:15 pm - 10:55 pmSTL Lambert-St Louis-PER Perth

60h 40m2 stops Chicago O'Hare Intl Hong Kong Intl

8:30 am - 4:43 pmPER Perth-STL Lambert-St Louis

46h 13m2 stops Hong Kong Intl Chicago O'Hare Intl

$1,514Cathay Pacific

Sun, Nov 1 - Mon, Nov 16

10:21 am - 10:55 pmSTL Lambert-St Louis-PER Perth

46h 34m2 stops Dallas/Fort Worth Hong Kong Intl

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

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

$1,544Multiple Airlines

Sun, Nov 1 - Mon, Nov 16

7:06 pm - 10:55 pmSTL Lambert-St Louis-PER Perth

37h 49m2 stops Dallas/Fort Worth Hong Kong Intl

8:30 am - 4:43 pmPER Perth-STL Lambert-St Louis

46h 13m2 stops Hong Kong Intl Chicago O'Hare Intl

$1,575Cathay Pacific

Sun, Nov 1 - Mon, Nov 16

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

29h 40m2 stops San Francisco Melbourne

3:15 pm - 6:05 pmPER Perth-STL Lambert-St Louis

40h 50m3 stops Sydney Kingsford Smith Los Angeles San Francisco

$1,739United Airlines

Sun, Nov 1 - Mon, Nov 16

2:54 pm - 12:30 pmSTL Lambert-St Louis-PER Perth

31h 36m2 stops Dallas/Fort Worth Sydney Kingsford Smith

10:45 pm - 5:55 pmPER Perth-STL Lambert-St Louis

33h 10m3 stops Melbourne Sydney Kingsford Smith Dallas/Fort Worth

$1,838Multiple Airlines

Sun, Nov 1 - Mon, Nov 16

2:54 pm - 4:20 pmSTL Lambert-St Louis-PER Perth

35h 26m2 stops Dallas/Fort Worth Melbourne

2:00 pm - 1:43 pmPER Perth-STL Lambert-St Louis

61h 43m3 stops Melbourne Los Angeles Phoenix Sky Harbor Intl

$1,857Qantas Airways

Sun, Nov 1 - Mon, Nov 16

2:54 pm - 2:30 pmSTL Lambert-St Louis-PER Perth

33h 36m2 stops Dallas/Fort Worth Melbourne

11:10 pm - 8:42 pmPER Perth-STL Lambert-St Louis

59h 32m3 stops Brisbane Sydney Kingsford Smith Los Angeles

$2,058Qantas Airways

Sun, Nov 1 - Mon, Nov 16

10:21 am - 2:20 pmSTL Lambert-St Louis-PER Perth

37h 59m2 stops Dallas/Fort Worth Sydney Kingsford Smith

11:10 pm - 10:15 pmPER Perth-STL Lambert-St Louis

37h 05m3 stops Brisbane Los Angeles Chicago O'Hare Intl

$2,093Qantas Airways

Sun, Nov 1 - Mon, Nov 16

4:05 pm - 2:30 pmSTL Lambert-St Louis-PER Perth

56h 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

$2,669Air Canada

Sun, Nov 1 - Mon, Nov 16

4:05 pm - 2:30 pmSTL Lambert-St Louis-PER Perth

56h 25m3 stops Toronto Pearson Intl Vancouver Intl Sydney Kingsford Smith

3:20 pm - 3:26 pmPER Perth-STL Lambert-St Louis

62h 06m3 stops Sydney Kingsford Smith Vancouver Intl Toronto Pearson Intl

$2,695Multiple Airlines

Useful Info

Cheapest flight	$917

Flight from St. Louis to Perth

How does KAYAK find such low prices on flights from Missouri to Perth?
KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Missouri to Perth.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Missouri to Perth?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Perth from Missouri is likely to change within 7 days, so travelers know whether to wait or book now.
What is the Hacker Fare option on flights from Missouri to Perth?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Perth with an airline and back to Missouri with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Missouri to Perth?
Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Perth from Missouri up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.