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Find cheap flights from Idaho to Australia from $1,735

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Idaho to Australia departing on 25/5. 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.
1 adult
Mon 27/5
Mon 3/6

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In the last 7 days, travellers have searched 44,335,567 times on KAYAK, and here's why:

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Good to know

Low season

July

High season

October

Cheapest flight

$1,735
Best time to beat the crowds but there is an average 42% increase in price.
Most popular time to fly and prices are also 11% lower on average.
Flight from Boise to Sydney

FAQs for booking flights from Idaho to Australia

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

    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 Idaho to Australia.

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

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

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Australia with an airline and back to Idaho with another airline.

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

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

See more FAQs

Book cheap flights from Idaho to Australia

Recent return flight deals

14/8Wed
2 stopsAir New Zealand
26h 30mBOI-SYD
3/9Tue
2 stopsAir New Zealand
27h 11mSYD-BOI
$1,885
23/8Fri
2 stopsAir New Zealand
21h 35mBOI-SYD
3/9Tue
2 stopsAir New Zealand
26h 35mSYD-BOI
$1,933
19/5Sun
2 stopsAmerican Airlines
25h 25mGEG-SYD
31/5Fri
2 stopsAmerican Airlines
30h 58mSYD-GEG
$2,109
15/5Wed
2 stopsDelta
27h 30mGEG-SYD
3/7Wed
2 stopsDelta
25h 40mSYD-GEG
$2,220
20/5Mon
2 stops
35h 15mGEG-BNE
31/5Fri
2 stops
43h 56mBNE-GEG
$2,266
26/5Sun
2 stops
25h 55mGEG-BNE
2/6Sun
2 stops
29h 46mBNE-GEG
$2,269
17/5Fri
1 stopDelta
25h 07mGEG-SYD
30/6Sun
1 stopDelta
19h 29mSYD-GEG
$2,442
30/9Mon
1 stopUnited Airlines
21h 40mGEG-BNE
23/10Wed
1 stopUnited Airlines
21h 35mBNE-GEG
$2,709
30/9Mon
2 stopsUnited Airlines
23h 58mGEG-BNE
27/10Sun
1 stopUnited Airlines
19h 39mBNE-GEG
$2,715
30/4Tue
2 stopsAmerican Airlines
32h 50mGEG-SYD
4/5Sat
2 stopsAmerican Airlines
28h 41mSYD-GEG
$3,590

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Recent one-way flight deals

25/5Sat
3 stops
26h 51mBOI-SYD
$1,735
25/5Sat
2 stopsAir New Zealand
28h 20mBOI-SYD
$1,760
14/5Tue
3 stopsAir Tahiti Nui
39h 10mGEG-SYD
$1,807
14/5Tue
2 stopsAir New Zealand
34h 20mGEG-SYD
$1,855
25/5Sat
1 stopQantas Airways
32h 05mBOI-SYD
$1,979
14/5Tue
1 stopDelta
25h 07mGEG-SYD
$2,132

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Last minute flights from Idaho to Australia

Last minute flight, train and bus deals

30/4Tue
multi-stopAir Tahiti Nui
42h 05mGEG-SYD
4/5Sat
multi-stopAir Tahiti Nui
50h 52mSYD-GEG
$3,356
30/4Tue
multi-stopAir New Zealand
34h 17mGEG-SYD
4/5Sat
multi-stopAir New Zealand
28h 54mSYD-GEG
$3,466
30/4Tue
multi-stopAir New Zealand
42h 27mGEG-SYD
4/5Sat
multi-stopAir New Zealand
28h 54mSYD-GEG
$3,529
30/4Tue
multi-stopAmerican Airlines
32h 50mGEG-SYD
4/5Sat
multi-stopAmerican Airlines
28h 41mSYD-GEG
$3,590
30/4Tue
multi-stopUnited Airlines
24h 13mGEG-SYD
4/5Sat
multi-stopUnited Airlines
28h 30mSYD-GEG
$3,719
30/4Tue
multi-stopDelta
23h 45mGEG-SYD
4/5Sat
multi-stopDelta
20h 11mSYD-GEG
$3,746

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Flights to Australia

Return flight deals:

Australia - Idaho

Cabin classes: