$637 Find Cheap Flights from Australia to Idaho

1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Idaho

 
These are the airlines KAYAK users have selected most often from within our search results for flights to Idaho, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results for flights to Idaho, as well as popular online travel agencies
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Useful Info

What is the cheapest month to fly from Australia to Idaho?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Australia to Idaho, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Australia to Idaho is September, when tickets cost $1,056 (return) on average. On the other hand, the most expensive months are February and July, when the average cost of round-trip tickets is $1,529 and $1,498 respectively.


Good to know

Low seasonSeptember
High seasonJanuary
Cheapest flight$637
Best time to beat the crowds with an average 3% drop in price.
Most popular time to fly with an average 7% increase in price.
Flight from Brisbane to Boise

FAQs for booking flights from Australia to Idaho

  • How does KAYAK find such low prices on flights from Australia to Idaho?

    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 Australia to Idaho.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Australia to Idaho 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 Australia to Idaho?

    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 from Australia to Idaho with an airline and back with another airline.

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

    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 from Australia to Idaho up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest day to fly to Idaho?

    Based on KAYAK data, the cheapest day to fly to Idaho is Friday where round-trip tickets can be as cheap as $1,426. On the other hand, the most expensive day to fly is Tuesday, where round-trip prices are $1,565 on average.

  • What is the cheapest time of day to fly to Idaho?

    The cheapest time of day to fly to Idaho is generally in the evening, when round-trip flights cost $984 on average. Morning departures are around 10% more expensive than evening flights, on average. The most expensive time of day to fly to Idaho is generally in the morning, which is peak travel time and where the average cost of a ticket is $1,056.

Reviews of the top airline flying from Australia to Idaho

 
See real verified KAYAK customer reviews for airlines flying to Idaho. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Australia to Idaho. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Australia to Idaho? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 8858 reviews
6.6Food
7.3Comfort
7.0Entertainment
8.1Crew
7.7Boarding
Airline reviews

It was all good flight was on time, service was good I enjoyed a few movies and everything was smooth

10.0 ExcellentAnonymous, Jul 2025YYZ - SFO
Read more United Airlines reviews

It was all good flight was on time, service was good I enjoyed a few movies and everything was smooth

Survey sent before we actually left. Delay after delay. Now a crew problem.

I love flying with United. Unfortunately, I flew on an older plane with minimal upgraded technology (no Bluetooth functionality or handy charging ports). Otherwise, the flight was great and even arrived early.

They changed my seats after I checked in and I was stressed from the time I saw that information until just before boarding, when the gate attendant fixed it, but it shouldn't have happened. And if it couldn't be prevented, then the people on the phone I spoke with should have done something to help, which they did not, nor did they offer me compensation, just meaningless apologies.

Horrific. They missed my connecting flight to San Diego. I didn’t get there until Monday at 9am when I had a mandatory court settlement conference scheduled at 6am since we had parties on the east coast. This caused many issues. All because United apparently forgot to hold the doors open until my flight landed that only had a 10 minute delay. This was the last flight to Southern California. So I couldn’t even rent a car to finish the trip. United cannot be trusted when traveling on specific days and times since weather didn’t have anything to do with the delays.

My flight was delayed a very short period of time but they did not hold my connecting flight to San Diego, also through United. So they closed the doors before we got off our plane. They would only have to help the door open for another five to ten minutes. So I missed a court deadline for a manditory mediation settlement conference for my client. I had to get an associate to be there in person and be on the phone with him relaying what he needs to do the entire time. The court was very upset with me and so was my client. United cannot be trusted.

Very rough getting into denver. my kid threw up it was so rough.

We were given vouchers we couldn’t use with a 5.5 hour delay

We had a very long diversion and our food voucher didn’t work because the restaurants were closed

Cramped seat even in economy plus seat 10A. Over booked flight, no space for the bags

Book cheap flights from Australia to Idaho

Recent round-trip flight deals

 
These are the cheapest round-trip flights to Idaho found on KAYAK in the last 72 hours.
8/15Fri
2 stops
25h 55mMEL-GEG
8/22Fri
2 stops
29h 35mGEG-MEL
$1,001
7/25Fri
2 stopsAir New Zealand
22h 56mBNE-BOI
8/10Sun
2 stopsAir New Zealand
32h 10mBOI-BNE
$1,020
7/21Mon
2 stopsAir New Zealand
39h 36mBNE-BOI
7/30Wed
2 stopsAir New Zealand
26h 20mBOI-BNE
$1,102
10/30Thu
1 stopDelta
21h 47mSYD-BOI
11/3Mon
1 stopDelta
23h 25mBOI-SYD
$1,329
10/30Thu
1 stopDelta
21h 47mSYD-BOI
11/3Mon
1 stopDelta
23h 25mBOI-SYD
$1,333
10/30Thu
2 stopsDelta
27h 36mSYD-BOI
11/3Mon
1 stopDelta
23h 25mBOI-SYD
$1,337
8/14Thu
2 stopsUnited Airlines
27h 08mMEL-GEG
8/21Thu
2 stopsUnited Airlines
47h 15mGEG-MEL
$1,507
8/16Sat
1 stopUnited Airlines
29h 13mMEL-GEG
8/23Sat
2 stopsUnited Airlines
58h 00mGEG-MEL
$1,516
10/30Thu
2 stopsQantas Airways
33h 47mNTL-BOI
11/3Mon
2 stopsQantas Airways
42h 37mBOI-NTL
$2,386
10/30Thu
2 stopsQantas Airways
33h 47mNTL-BOI
11/3Mon
2 stopsQantas Airways
42h 37mBOI-NTL
$2,438

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Recent one-way flight deals

 
Only flying one-way? Below are some of the best deals for one-way flights to Idaho found on KAYAK in the last 72 hours.
7/25Fri
3 stops
44h 10mBNE-BOI
$637
8/2Sat
2 stopsDelta
29h 15mSYD-BOI
$649
8/2Sat
2 stopsDelta
29h 15mSYD-BOI
$650
8/2Sat
1 stopDelta
29h 32mSYD-BOI
$653
7/16Wed
2 stopsDelta
22h 15mSYD-BOI
$694
8/15Fri
1 stopUnited Airlines
29h 13mMEL-GEG
$1,123
8/15Fri
2 stopsUnited Airlines
47h 32mMEL-GEG
$1,129
7/24Thu
2 stopsEmirates
57h 16mBNE-BOI
$2,016
7/16Wed
3 stopsAir Tahiti Nui
45h 04mSYD-BOI
$2,632
7/16Wed
3 stopsAir Tahiti Nui
45h 04mSYD-BOI
$2,636

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Last minute flights to Idaho

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights to Idaho that are departing in the next 10 days.
7/4Fri
multi-stopHawaiian Airlines
32h 08mBNE-BOI
9/12Fri
multi-stopHawaiian Airlines
35h 00mBOI-BNE
$1,703
7/4Fri
multi-stopAmerican Airlines
30h 49mBNE-BOI
9/12Fri
multi-stopAmerican Airlines
23h 47mBOI-BNE
$1,912
7/6Sun
multi-stopUnited Airlines
29h 01mBNE-BOI
9/13Sat
multi-stopUnited Airlines
44h 51mBOI-BNE
$1,960
7/6Sun
multi-stopUnited Airlines
24h 41mBNE-BOI
9/12Fri
multi-stopUnited Airlines
28h 38mBOI-BNE
$2,009
7/3Thu
multi-stopAmerican Airlines
36h 41mBNE-BOI
9/11Thu
multi-stopAmerican Airlines
30h 26mBOI-BNE
$2,036
7/5Sat
multi-stopAir Tahiti Nui
44h 04mBNE-BOI
9/12Fri
multi-stopAir Tahiti Nui
29h 23mBOI-BNE
$2,187
7/5Sat
multi-stopUnited Airlines
25h 45mBNE-BOI
9/13Sat
multi-stopUnited Airlines
44h 51mBOI-BNE
$2,225
7/4Fri
multi-stop
26h 46mBNE-BOI
9/12Fri
multi-stop
28h 22mBOI-BNE
$2,405
7/4Fri
multi-stopSingapore Airlines
39h 13mBNE-BOI
9/13Sat
multi-stopSingapore Airlines
61h 17mBOI-BNE
$2,539
7/4Fri
multi-stopSingapore Airlines
44h 38mBNE-BOI
9/11Thu
multi-stopSingapore Airlines
76h 07mBOI-BNE
$2,614

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Everything you need to know for your flight to Idaho

Cabin class types available on flights to Idaho

Cabin classes available on flights to Idaho. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

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