$1,459+ Cheap flights from St. Louis (STL) to Perth (PER)
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.
STL — PER
May 12 — May 191
1 adult, Economy
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Find cheap flights from St. Louis to Perth with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.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 7, 2025.
Most accurate provider | AranGrant 3 stars |
|---|---|
Most trusted provider | AranGrant 3 stars |
Round-trip from | $1,459 (oojo) |
Find flight deals from St. Louis to Perth
Cheapest flights from St. Louis to PerthExplore the most affordable flight options available from St. Louis to Perth. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 7, 2025.
Explore the most affordable flight options available from St. Louis to Perth. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 7, 2025.
This oojo deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/166:00 amSTL - PER
2 stops47h 40mQatar Airways
Fri 9/2610:45 pmPER - STL
2 stops38h 14mQatar Airways
Deal found 5/6![Qatar Airways logo]()
$1,459
This Air Canada deal was found by Cheapflights users on 5/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/287:30 amSTL - PER
3 stops42h 25mMultiple Airlines
Mon 8/411:55 pmPER - STL
3 stops32h 45mMultiple Airlines
Deal found 5/7![Multiple Airlines logo]()
$1,556
This KAYAK deal was found by Cheapflights users on 5/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/147:05 pmSTL - PER
2 stops33h 00mQantas Airways
Wed 5/2110:30 amPER - STL
2 stops25h 34mQantas Airways
Deal found 5/7![Qantas Airways logo]()
$1,605
This oojo deal was found by Cheapflights users on 5/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/145:00 amSTL - PER
2 stops37h 45mCathay Pacific
Tue 5/2012:10 amPER - STL
2 stops35h 54mCathay Pacific
Deal found 5/7![Cathay Pacific logo]()
$1,761
This Jetabroad deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/164:32 pmSTL - PER
3 stops33h 53mAir New Zealand
Fri 9/2611:55 pmPER - STL
2 stops29h 47mAir New Zealand
Deal found 5/6![Air New Zealand logo]()
$1,886
This United Airlines deal was found by Cheapflights users on 5/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/216:10 amSTL - PER
2 stops43h 30mUnited Airlines
Sat 6/284:45 pmPER - STL
2 stops37h 00mUnited Airlines
Deal found 5/7![United Airlines logo]()
$2,156
This Flightnetwork deal was found by Cheapflights users on 5/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/161:39 pmSTL - PER
3 stops37h 06mAir Canada
Fri 9/2611:55 pmPER - STL
3 stops29h 38mAir Canada
Deal found 5/6![Air Canada logo]()
$4,095
Cheapflights Fare Finder
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 2,558,603 searches. Data last updated May 7, 2025.
Use the filters below to find and compare flights from St. Louis to Perth that are best for you.
Fly from
St. Louis
Fly to
Perth
Route
Depart
Return
Price
St. LouisPerth
STL - PER
STLPER
Lambert-St Louis
Tue 9/16
6:00 am-6:40 pm
2 stops47h 40m
Perth
Fri 9/26
10:45 pm-11:59 pm
2 stops38h 14m
$1,459
St. LouisPerth
STL - PER
STLPER
Lambert-St Louis
Wed 5/28
7:30 am-2:55 pm
3 stops42h 25m
Perth
Mon 8/4
11:55 pm-7:40 pm
3 stops32h 45m
$1,556
St. LouisPerth
STL - PER
STLPER
Lambert-St Louis
Wed 5/28
7:05 pm-5:05 pm
2 stops33h 00m
Perth
Mon 8/4
10:30 am-11:21 pm
2 stops25h 51m
$1,605
St. LouisPerth
STL - PER
STLPER
Lambert-St Louis
Tue 9/16
4:32 pm-3:25 pm
3 stops33h 53m
Perth
Fri 9/26
11:55 pm-4:42 pm
2 stops29h 47m
$1,886
St. LouisPerth
STL - PER
STLPER
Lambert-St Louis
Tue 9/16
7:59 pm-10:40 pm
2 stops37h 41m
Perth
Thu 9/25
12:10 am-7:08 pm
2 stops31h 58m
$1,909
St. LouisPerth
STL - PER
STLPER
Lambert-St Louis
Sat 6/21
6:10 am-2:40 pm
2 stops43h 30m
Perth
Sat 6/28
4:45 pm-4:45 pm
2 stops37h 00m
$2,156
St. LouisPerth
STL - PER
STLPER
Lambert-St Louis
Tue 9/16
1:39 pm-3:45 pm
3 stops37h 06m
Perth
Fri 9/26
11:55 pm-4:33 pm
3 stops29h 38m
$4,095
Compare providers for flights from St. Louis to Perth
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Perth in May.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*2 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on St. Louis-Perth flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on St. Louis-Perth flight deals on Cheapflights vs. AranGrant >95% of the time. Price accuracy is based on data collected from St. Louis-Perth flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on St. Louis-Perth flights, Cheapflights users trust AranGrant the most. AranGrant has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-Perth flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from St. Louis to Perth
Have a flexible travel schedule? Discover the best time to fly to Perth from St. Louis with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from St. Louis to Perth
What is the cheapest time of day to fly from STL to PER?
Find hourly flight availability from St. Louis to Perth. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated May 7, 2025.
Unlike in the evening, when flights are generally more expensive, you can save up to 47% on flights from St. Louis to Perth by exploring options for tickets at noon.
Rainfall in Perth by month
Plan your trip to Perth by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in Perth ranges from 0.0 - 6.7 inches per month. June is typically the wettest month, when rainfall can reach 6.7 in. January is typically the driest time to visit Perth when rainfall is around 0.0 in.
Temperature in Perth by month
Plan your trip to Perth by taking into account the average temperature totals by month.
If weather is an important factor for your trip to Perth, use this chart to help with planning. For those seeking warmer temperatures, January is the ideal time of year to visit, when temperatures reach an average of 75.2 F. Travelers looking to avoid the cold should look outside of July, when temperatures are typically at their lowest (around 53.6 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 7, 2025.
Get a feel of what it's like to fly with Air New Zealand, Qantas Airways and Cathay Pacific from St. Louis to Perth by reading reviews from past customers. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
8.0
Food
7.3
Crew
8.5
Comfort
8.0
Boarding
8.2
Entertainment
7.4
Reviews
1 / 20
10.0
ExcellentAnonymous,Apr 2025
IAH - MSP
Overall
8.0
Food
7.3
Crew
8.5
Comfort
8.0
Boarding
8.2
Entertainment
7.4
Reviews
1 / 20
10.0
ExcellentAnonymous,Apr 2025
IAH - MSP
Overall
8.0
Food
7.3
Crew
8.5
Comfort
8.0
Boarding
8.2
Entertainment
7.4
Reviews
1 / 20
10.0
ExcellentAnonymous,Apr 2025
IAH - MSP
Overall
8.0
Food
7.3
Crew
8.5
Comfort
8.0
Boarding
8.2
Entertainment
7.4
Reviews
1 / 20
10.0
ExcellentAnonymous,Apr 2025
IAH - MSP
Overall
8.0
Food
7.3
Crew
8.5
Comfort
8.0
Boarding
8.2
Entertainment
7.4
Reviews
1 / 20
10.0
ExcellentAnonymous,Apr 2025
IAH - MSP
Overall
8.0
Food
7.3
Crew
8.5
Comfort
8.0
Boarding
8.2
Entertainment
7.4
Reviews
1 / 20
10.0
ExcellentAnonymous,Apr 2025
IAH - MSP
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.
Traveling to a place near St. Louis?
Book flights to St. Louis if you plan to visit one of these locationsFremantle
Rottnest Island
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Alternative routes for St. Louis to Perth
See prices for flight routes from nearby airports that may be better suited for you.
Top 3 airlines flying from St. Louis to Perth
Discover the top 3 airlines 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 2,558,603 searches. Data last updated May 7, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$1,450 | Average$1,715 | FlexibilityNo cancel fee | On-time68% | |
| Cheapest$1,691 | Average$2,499 | FlexibilityNo cancel fee | On-time74% | |
| Cheapest$1,928 | Average$1,936 | FlexibilityNo cancel fee | On-time69% |