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Cheap flights from St. Louis to Perth from $1,389

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Perth departing on 17/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from St. Louis to Perth

Cheap return flights

These are some of the best return flight deals from St. Louis to Perth that have been recently found on momondo from popular airlines, departing in the coming months.

Cheap one-way flights

Flying one-way? These are some of the best deals recently discovered on momondo for flights from St. Louis to Perth.

Cheap last-minute flights

Planning a quick getaway from St. Louis to Perth? These are the last-minute flight deals available now.

Cheap direct flights

If you prefer a non-stop journey, check out our latest direct flight deals to Perth, so you can enjoy a seamless trip without stopovers.

Cheap bus & train deals from St. Louis to Perth

Find recent round-trip train or bus tickets from St. Louis to Perth.

All round-trip flight deals to Perth

The cheapest plane tickets to Perth found on KAYAK recently.
18:00 - 13:35STL-PER
30h 35m2 stops
08:05 - 22:06PER-STL
27h 01m2 stops
$3,179Air New Zealand
Find Deal
Sat, 24 May - Sun, 3 Aug
18:00 - 22:45STL-PER
39h 45m2 stops
08:05 - 20:21PER-STL
25h 16m2 stops
$3,181Air New Zealand
Find Deal
Sat, 24 May - Sun, 3 Aug
16:17 - 13:35STL-PER
32h 18m3 stops
08:05 - 22:06PER-STL
27h 01m2 stops
$3,215Air New Zealand
Find Deal
Sat, 24 May - Sun, 3 Aug
16:17 - 13:35STL-PER
32h 18m3 stops
08:05 - 00:27PER-STL
29h 22m2 stops
$3,216Air New Zealand
Find Deal
Sat, 24 May - Sun, 3 Aug
13:30 - 16:00STL-PER
37h 30m3 stops
19:50 - 23:18PER-STL
40h 28m3 stops
$3,718
Find Deal
Sat, 24 May - Sun, 3 Aug
13:27 - 16:00STL-PER
37h 33m3 stops
19:50 - 23:18PER-STL
40h 28m3 stops
$3,719
Find Deal
Sat, 24 May - Sun, 3 Aug
18:00 - 14:40STL-PER
31h 40m2 stops
01:10 - 00:27PER-STL
36h 17m2 stops
$4,134United Airlines
Find Deal
Sat, 24 May - Sat, 2 Aug
18:00 - 14:40STL-PER
31h 40m2 stops
01:10 - 00:27PER-STL
36h 17m2 stops
$4,136United Airlines
Find Deal
Sat, 24 May - Sat, 2 Aug
05:45 - 09:35STL-PER
37h 50m2 stops
$1,389Cathay Pacific
Find Deal
Mon, 17 Feb
06:10 - 09:35STL-PER
37h 25m2 stops
$1,458Cathay Pacific
Find Deal
Mon, 17 Feb
15:50 - 14:30STL-PER
56h 40m3 stops
$2,141Air Canada
Find Deal
Mon, 17 Feb
18:00 - 09:35STL-PER
49h 35m2 stops
$2,256Cathay Pacific
Find Deal
Tue, 14 Jan
16:36 - 21:35STL-PER
38h 59m3 stops
$3,014Air Canada
Find Deal
Tue, 14 Jan

Air New Zealand flights from St. Louis to Perth

Our best Air New Zealand deals on St. Louis to Perth flight tickets
Air New Zealand
24 May
STL18:00Lambert-St Louis
30h 35m
2 stops
PER13:35Perth
3 Aug
PER08:05Perth
27h 01m
2 stops
STL22:06Lambert-St Louis
Air New Zealand
24 May
STL18:00Lambert-St Louis
39h 45m
2 stops
PER22:45Perth
3 Aug
PER08:05Perth
25h 16m
2 stops
STL20:21Lambert-St Louis
Air New Zealand
24 May
STL16:17Lambert-St Louis
32h 18m
3 stops
PER13:35Perth
3 Aug
PER08:05Perth
27h 01m
2 stops
STL22:06Lambert-St Louis

United Airlines flights from St. Louis to Perth

Our best United Airlines deals on St. Louis to Perth flight tickets
United Airlines
24 May
STL18:00Lambert-St Louis
31h 40m
2 stops
PER14:40Perth
2 Aug
PER01:10Perth
36h 17m
2 stops
STL00:27Lambert-St Louis
United Airlines
24 May
STL18:00Lambert-St Louis
31h 40m
2 stops
PER14:40Perth
2 Aug
PER01:10Perth
36h 17m
2 stops
STL00:27Lambert-St Louis

See travel insights to Perth from

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 from St. Louis to Perth is on a Tuesday. Travellers who choose to depart for Perth on a Tuesday will often find tickets for as low as $0. The most expensive day to fly to Perth is Monday, with ticket prices averaging around $3,064.

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

In the morning is the cheapest time of day to fly from St. Louis to Perth when you can find flight prices for as low as $0. Flying to Perth in the morning is an ideal time because this is during off-peak travel hours. Flights in the evening are often more expensive, with an average ticket price of $3,064.

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 return 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

Best price found

$1,389

Fastest flight time

30h 35m

Direct flights

None

Airports in Perth

1 airport
The best one-way flight to Perth from St. Louis in the past 72 hours is $1,389. The best return flight deal from St. Louis to Perth found on momondo in the last 72 hours is $3,179.
The fastest flight from St. Louis to Perth takes 30h 35m
There are no direct flights from St. Louis to Perth. Popular non-direct route for this connection is Lambert-St Louis Airport - Perth Airport.
There is 1 airport near Perth: Perth (PER)

  • How far is Lambert-St Louis to Perth by plane?

    There are 17533.8 km between Lambert-St Louis and Perth. In terms of flight time, this usually takes a little over 30h 35m.

  • 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 refresh daily.

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and stopovers. It is recommended that you verify 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 required for your trip to Perth Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s licence, and a passport valid for six-months after you plan to arrive at Perth Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.


Why use momondo?

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

It is quick and easy to find St. Louis to Perth flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Perth that suits you.

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

All flight searches from St. Louis to Perth on momondo can be filtered to show those which offer flexible booking policies.

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

momondo helps you find the best flight between St. Louis and Perth by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Price alerts on flights to Perth from St. Louis are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.


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