$769 Cheap Flights from Boise (BOI) to Perth (PER)

View $769 flight on Wed, Sep 10, 2025Opens in a new window

Popular airlines from Boise Airport (BOI) to Perth Airport (PER)

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Cheap Flights from Boise to Perth (BOI-PER)

Prices were available within the past 7 days and start at $769 for one-way flights and $1,353 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Tue, Aug 26 - Tue, Sep 9
BOI
Boise
PER
Perth
$1,353 Roundtrip, found 5 days ago
$1,353
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Tue, Aug 26 from Boise to Perth, returning Tue, Sep 9, priced at $1,353 found 5 days ago
Alaska Airlines
Tue, Aug 26 - Tue, Sep 9
BOI
Boise
PER
Perth
$1,388 Roundtrip, found 5 days ago
$1,388
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Tue, Aug 26 from Boise to Perth, returning Tue, Sep 9, priced at $1,388 found 5 days ago
Alaska Airlines
Tue, Oct 14 - Thu, Oct 30
BOI
Boise
PER
Perth
$1,397 Roundtrip, found 6 days ago
$1,397
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Tue, Oct 14 from Boise to Perth, returning Thu, Oct 30, priced at $1,397 found 6 days ago
Alaska Airlines
Tue, Aug 26 - Tue, Sep 9
BOI
Boise
PER
Perth
$1,401 Roundtrip, found 5 days ago
$1,401
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Tue, Aug 26 from Boise to Perth, returning Tue, Sep 9, priced at $1,401 found 5 days ago
Alaska Airlines
Tue, Oct 14 - Thu, Oct 30
BOI
Boise
PER
Perth
$1,410 Roundtrip, found 6 days ago
$1,410
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Tue, Oct 14 from Boise to Perth, returning Thu, Oct 30, priced at $1,410 found 6 days ago
Alaska Airlines
Tue, Aug 26 - Tue, Sep 9
BOI
Boise
PER
Perth
$1,423 Roundtrip, found 5 days ago
$1,423
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Tue, Aug 26 from Boise to Perth, returning Tue, Sep 9, priced at $1,423 found 5 days ago
Singapore Airlines
Tue, Oct 14 - Thu, Oct 30
BOI
Boise
PER
Perth
$1,473 Roundtrip, found 6 days ago
$1,473
Roundtrip
found 6 days ago
Select Singapore Airlines flight, departing Tue, Oct 14 from Boise to Perth, returning Thu, Oct 30, priced at $1,473 found 6 days ago
Qatar Airways
Wed, Sep 10 - Fri, Sep 26
BOI
Boise
PER
Perth
$1,484 Roundtrip, found 4 days ago
$1,484
Roundtrip
found 4 days ago
Select Qatar Airways flight, departing Wed, Sep 10 from Boise to Perth, returning Fri, Sep 26, priced at $1,484 found 4 days ago
Air New Zealand
Fri, Feb 13 - Wed, Feb 25
BOI
Boise
PER
Perth
$1,627 Roundtrip, found 2 hours ago
$1,627
Roundtrip
found 2 hours ago
Select Air New Zealand flight, departing Fri, Feb 13 from Boise to Perth, returning Wed, Feb 25, priced at $1,627 found 2 hours ago
All Nippon Airways
Sat, Sep 13 - Sat, Sep 20
BOI
Boise
PER
Perth
$1,916 Roundtrip, found 1 day ago
$1,916
Roundtrip
found 1 day ago
Select All Nippon Airways flight, departing Sat, Sep 13 from Boise to Perth, returning Sat, Sep 20, priced at $1,916 found 1 day ago
Flights from Boise (BOI) to Perth (PER)
Origin airport
Boise
Destination airport
Perth
Airlines serving
Air New Zealand, American Airlines, Qatar Airways, Singapore Airlines, United
Roundtrip price
$1,352
Distance
9525 mi

Boise to Perth Flights

The cheapest times to fly from Boise to Perth

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Boise to Perth are during the month of August. You can find some of the cheapest flights from Boise to Perth with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Boise to Perth

Sunday is one of the best days to book for cheap flights from Boise to Perth: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Boise to Perth

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Boise to Perth in 2025. You can also book with separate airlines for your outbound and return journeys, from $769 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Boise to Perth flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Boise to Perth airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Boise Airport (BOI) to Perth Airport (PER) cost?
Discover the latest flight deals from BOI to PER by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from BOI to PER?
The cheapest flights from BOI to PER are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from BOI to PER?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from BOI to PER. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Boise Airport (BOI) to Perth Airport (PER)?
Nonstop flights from Boise Airport (BOI) to Perth Airport (PER) aren't available daily, so you'll need to take a flight with a layover. Explore your options with our filter tool. Enter your dates and pick either "1 Stop" or "2+ Stops."
What day of the week has the most flights from BOI to PER?
You'll typically find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can change from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Boise Airport (BOI) to Perth Airport (PER)?
Book a flight from Boise Airport (BOI) to Perth Airport (PER) that takes off before 3 PM to reduce the risk of cancellations. Later departures have a 22% higher chance of being canceled, on average.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Boise Airport (BOI) to Perth Airport (PER) last-minute?
Waiting until just before your trip to book a flight from BOI to PER often results in higher prices. While it's possible to find some last-minute discounts, they're not always guaranteed. Keep your travel schedule open for a better chance of scoring a bargain.
Is it cheaper to book a BOI to PER flight and hotel package?
Compared with arranging hotels and flights separately, booking a BOI to PER flight and hotel package with Expedia could lead to significant savings. Better yet, having everything in one convenient place takes the hassle out of planning your trip. Simply pick your flights and select from our extensive range of stays, then tailor your trip with other add-ons like activities and car rentals.
Can I cancel or change the date of my flight from Boise Airport (BOI) to Perth Airport (PER)?
It's generally possible to cancel or reschedule your BOI to PER flight. However, for bookings made more than 24 hours ago, additional fees may apply. Check your airline's policies in your itinerary to see what changes are possible and if any costs are involved. You'll also find more information on our Customer Service portal.

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*Available to One Key members.