HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news

Cheap flights from St. Louis (STL) to Perth (PER) from $1,623

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/16. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
STL — PER
May 21 — May 281
From?
To?
Tue 5/21
Tue 5/28
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Cheap flight deals from St. Louis to Perth

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Perth (PER). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated May 16, 2024.

Popular in

July

Cheapest in

February

Average price

$1,680

Round-trip from

$1,584
High demand for flights, 22% potential price rise
Search Deals
Best time to find cheap flights, 28% potential price drop
Search Deals
Average for round-trip flights in May 2024
Search Deals
From Lambert-St Louis to Perth
Search Deals

What is the cheapest day to fly round-trip from St. Louis to Perth?

Leaving on a Monday is a viable option for saving on travel. Heavily demanded days of the week can typically drive up the prices you see. Booking your travel for a less competitive day can save up to 18% on the overall cost on flights from St. Louis to Perth.

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

February can be a great time to fly to Perth from St. Louis with a flight ticket averaging about $2,223. Cheapflights users have found deals in the month of February for as cheap as $1,589. The most expensive prices can be found in the month of July.

When is the cheapest time to fly from St. Louis to Perth (STL - PER)?

Unlike at noon, when flights are generally more expensive, you can save up to 35% on flights from St. Louis to Perth by exploring options for tickets in the morning.

Cheap St. Louis to Perth flights in May & June 2024

Find cheap flight options from St. Louis to Perth specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,637,452 searches. Prices were last updated on May 16, 2024.
Sun 6/96:29 amSTL - PER
2 stops40h 01mQantas Airways
Sun 6/169:05 amPER - STL
2 stops26h 53mQantas Airways
Deal found 5/16$1,995
Sun 6/94:55 pmSTL - PER
2 stops34h 05mAir New Zealand
Sun 6/162:25 pmPER - STL
3 stops43h 00mAir New Zealand
Deal found 5/16$2,540
Sun 6/99:50 amSTL - PER
3 stops38h 50mMultiple Airlines
Sun 6/1611:55 pmPER - STL
3 stops33h 06mMultiple Airlines
Deal found 5/16$2,641

St. Louis to Perth 2024 flight deals

Discover exclusive flight deals for travel between St. Louis and Perth in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 16, 2024.
Mon 9/167:00 amSTL - PER
2 stops46h 35mMultiple Airlines
Mon 9/3010:45 pmPER - STL
2 stops38h 13mMultiple Airlines
Deal found 5/16$1,623
Wed 11/137:23 pmSTL - PER
2 stops37h 27mCathay Pacific
Sat 11/1612:10 amPER - STL
2 stops36h 50mCathay Pacific
Deal found 5/14$1,711
Wed 11/1311:58 amSTL - PER
2 stops34h 12mAmerican Airlines
Sun 11/1710:55 pmPER - STL
2 stops33h 21mAmerican Airlines
Deal found 5/15$1,864
Wed 11/134:10 pmSTL - PER
3 stops56h 20mAir Canada
Sun 11/1710:55 pmPER - STL
3 stops54h 28mAir Canada
Deal found 5/15$1,874
Wed 11/134:10 pmSTL - PER
3 stops56h 20mAir Canada
Sun 11/1710:55 pmPER - STL
3 stops48h 58mAir Canada
Deal found 5/14$1,911
Mon 9/1610:10 amSTL - PER
3 stops39h 45mMultiple Airlines
Mon 9/3011:55 pmPER - STL
3 stops33h 05mMultiple Airlines
Deal found 5/16$1,958
Mon 9/164:20 pmSTL - PER
3 stops32h 20mMultiple Airlines
Mon 9/3011:55 pmPER - STL
2 stops28h 45mMultiple Airlines
Deal found 5/16$1,963
Wed 11/137:00 amSTL - PER
2 stops45h 45mQatar Airways
Sun 11/1710:45 pmPER - STL
2 stops39h 14mQatar Airways
Deal found 5/14$1,985
Sun 6/96:29 amSTL - PER
2 stops40h 01mQantas Airways
Sun 6/169:05 amPER - STL
2 stops26h 53mQantas Airways
Deal found 5/16$1,995

Find flights from St. Louis to Perth within your budget

Customize your flight search to find flights from St. Louis to Perth that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 16, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$1,623 - $2,641

Route

Depart

Return

Price

Lambert-St LouisPerth

STL - PER

STLPER

Lambert-St Louis

Mon 9/16

2 stops46h 35m

Perth

Mon 9/30

2 stops38h 13m

$1,623

Lambert-St LouisPerth

STL - PER

STLPER

Lambert-St Louis

Mon 9/16

3 stops39h 45m

Perth

Mon 9/30

3 stops33h 05m

$1,958

Lambert-St LouisPerth

STL - PER

STLPER

Lambert-St Louis

Mon 9/16

3 stops32h 20m

Perth

Mon 9/30

2 stops28h 45m

$1,963

Lambert-St LouisPerth

STL - PER

STLPER

Lambert-St Louis

Sun 6/9

2 stops40h 01m

Perth

Sun 6/16

2 stops26h 53m

$1,995

Lambert-St LouisPerth

STL - PER

STLPER

Lambert-St Louis

Mon 9/16

2 stops46h 10m

Perth

Sun 9/29

2 stops28h 58m

$2,278

Lambert-St LouisPerth

STL - PER

STLPER

Lambert-St Louis

Sun 6/9

2 stops34h 05m

Perth

Sun 6/16

3 stops43h 00m

$2,540

Lambert-St LouisPerth

STL - PER

STLPER

Lambert-St Louis

Mon 9/16

2 stops32h 55m

Perth

Sun 9/29

3 stops52h 12m

$2,595

Lambert-St LouisPerth

STL - PER

STLPER

Lambert-St Louis

Sun 6/9

3 stops38h 50m

Perth

Sun 6/16

3 stops33h 06m

$2,641

Flights are sorted by cheapest first

Deals found on 5/16

When is the cheapest time to fly from St. Louis to Perth?

Use this chart to determine the cheapest time to fly round-trip from St. Louis to Perth. Price data was last updated on May 12, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their St. Louis to Perth flight should consider departing on Tuesday evenings when fares are most often at their lowest. Saturday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

Average price of flights to Perth by month

Plan your trip from St. Louis to Perth by taking into account the cheapest months to travel. The average price of a one-way flight from St. Louis to Perth is currently $0 while a round-trip flight costs $2,199. Price data was last updated on May 12, 2024.

Currently, March is the cheapest month in which you can book a flight from St. Louis to Perth (average of $1,584). Flying from St. Louis to Perth in July is currently the most expensive (average of $2,169). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

January

$1,776

February

$1,740

March

$1,584

April

$1,685

May

$1,669

June

$1,900

July

$2,169

August

$1,762

September

$1,799

October

$1,801

November

$1,656

December

$1,934

Temperature and rainfall in Perth by month

Plan your trip to Perth by taking into account the average temperature and rainfall totals by month.

PER

Temperature

53.6 - 75.2 °F

Reviews of airlines servicing Perth

Get insights into the airlines that provide service to Perth. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Perth. Reviews last updated May 16, 2024.
Air New Zealand
8.3
Very good
626 reviews
Check prices

Food

7.6

Boarding

8.4

Comfort

8.1

Entertainment

7.9

Crew

8.8

Overall

8.3

Reviews

1 / 10

The crew, food, and entertainment were amazing. The leg room/distance from the row in front of you seems smaller than other airlines which is very uncomfortable.

Air New Zealand
8.3
Very good
626 reviews
Air New Zealand
8.3
Very good
626 reviews
Check prices

Food

7.6

Boarding

8.4

Comfort

8.1

Entertainment

7.9

Crew

8.8

Overall

8.3

Reviews

1 / 10

The crew, food, and entertainment were amazing. The leg room/distance from the row in front of you seems smaller than other airlines which is very uncomfortable.

Qantas Airways
7.6
Good
967 reviews
Air New Zealand
8.3
Very good
626 reviews
Check prices

Food

7.6

Boarding

8.4

Comfort

8.1

Entertainment

7.9

Crew

8.8

Overall

8.3

Reviews

1 / 10

The crew, food, and entertainment were amazing. The leg room/distance from the row in front of you seems smaller than other airlines which is very uncomfortable.

United Airlines
7.4
Good
10,924 reviews
Air New Zealand
8.3
Very good
626 reviews
Check prices

Food

7.6

Boarding

8.4

Comfort

8.1

Entertainment

7.9

Crew

8.8

Overall

8.3

Reviews

1 / 10

The crew, food, and entertainment were amazing. The leg room/distance from the row in front of you seems smaller than other airlines which is very uncomfortable.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Perth. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • Can I find flights from St. Louis to Perth for under $1,700 on Cheapflights?

    Yes, there are multiple flights from St. Louis to Perth for under $1,700. The cheapest flight booked recently is on Multiple Airlines for just $1,623, but on average you can expect to pay $2,199.

  • What are the cheapest airlines flying from St. Louis to Perth round-trip?

    Flying on Qantas Airways is currently your cheapest option to Perth, with prices starting at $1,995. Additional round-trip tickets that might be worth considering are offered by Air New Zealand and United Airlines, with the lowest prices starting at $2,540 and $2,595, respectively. Qantas Airways is 10% cheaper than the average price of flights available within the next 90 days to this destination.

  • What does STL to PER mean?

    Great question - STL to PER just means Lambert-St Louis Airport to Perth Airport. Now you’ll know what these unique codes when you look for flights!

  • Can I find deals for flights from St. Louis to Perth that include extra baggage allowance?

    The amount of baggage you can bring on your St. Louis to Perth flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from St. Louis to Perth with specific airlines?

    Yes, Cheapflights allows you to browse and filter St. Louis to Perth flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • Can I find deals for flights from St. Louis to Perth that include hotel bookings?

    Yes. In addition to deals on St. Louis to Perth flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Perth?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Perth.

  • Can I find deals for business class flights from St. Louis to Perth?

    Yes. Cheapflights offers flight deals from St. Louis to Perth by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • Can I find deals for flights from St. Louis to Perth that allow pets onboard?

    Many airlines flying from St. Louis to Perth offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from St. Louis to Perth?

    Yes, you can often find last-minute deals on St. Louis to Perth flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the St. Louis to Perth flight deals updated?

    The St. Louis to Perth flight deals you see on this page were last updated on 5/16.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for St. Louis to Perth
See prices for flight routes from nearby airports that may be better suited for you.

Kansas City to Perth flights

Top airline flying from St. Louis to Perth

Discover the top airline that operate flights from St. Louis to Perth. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 16, 2024.
AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$1,959Average$2,224FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights
Dallas to Atlanta flights
Fort Lauderdale to Key West flights
Boston to Aruba flights
Austin to Boston flights
Kansas City to Chicago flights
Los Angeles to London Heathrow Airport flights
New York to New Delhi flights
Los Angeles to Chicago flights
Boston to San Francisco flights
Los Angeles to New Orleans flights
Philadelphia to Miami flights
St. Louis to French Polynesia flights

Search flights from St. Louis to Perth by cabin class

Find flights from St. Louis to Perth, based on your preferred cabin class, be it economy, premium economy, business, or first class.
First Class
Business Class
Prem Econ Class
Economy Class

Book a flight to one of these trending destinations

User searches for flights to these destinations increased 20% or more in the past 90 days compared to other destinations
Flights to Montes Claros
Flights to Girona Costa Brava
Flights to Naxos
Flights to Bourgas
Flights to Hyannis Barnstable
Flights to Samos
Flights to Reggio Calabria Tito Menniti
Flights to Devils Lake
Flights to Ningbo Lishe Intl
Flights to Pellston Emmet County
Flights to Provincetown
Flights to Cortez Montezuma County
Flights to Ohrid
Flights to Oran Es Senia
Flights to Menorca/Mahon
Flights to Hakodate
Flights to Ordu/Giresun
Flights to Laayoune Hassan I
Flights to Cornwall Newquay
Flights to Melilla
Flights to Rennes St Jacques
Flights to Parikia Paros
Flights to Constanţa Mihail Kogalniceanu
Flights to Miyakojima Hirara

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from St. Louis to Perth?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Perth from St. Louis today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from St. Louis to Perth?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from St. Louis to Perth.

Can Cheapflights find flights from St. Louis to Perth with no change fees?

Need flexible booking options for your flight to Perth from St. Louis? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from St. Louis to Perth become cheaper?

Of course! You can now track prices for flights from St. Louis to Perth and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
View all available airlines