$1,061 Find Cheap Flights from Idaho to Australia

1 adult

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

Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 22% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Useful Info
Useful Info

Good to know

Low seasonMay
High seasonDecember
Cheapest flight$1,061
Best time to beat the crowds with an average 11% drop in price.
Most popular time to fly with an average 31% increase in price.
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 from Idaho to Australia 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 round-trip ticket. You could then fly from Idaho to Australia 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 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 from Idaho to Australia 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 Australia?

    Based on KAYAK data, the cheapest day to fly to Australia is Sunday where round-trip tickets can be as cheap as $1,164. On the other hand, the most expensive day to fly is Tuesday, where round-trip prices are $1,529 on average.

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

    The cheapest time of day to fly to Australia is generally in the evening, when round-trip flights cost $1,311 on average. Morning departures are around 12% more expensive than evening flights, on average. The most expensive time of day to fly to Australia is generally at night, which is peak travel time and where the average cost of a ticket is $1,539.

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

    The cheapest month for flights from Idaho to Australia is May, when tickets cost $1,031 (return) on average. On the other hand, the most expensive months are December and January, when the average cost of round-trip tickets is $1,803 and $1,576 respectively.

  • How long is the flight to Australia?

    An average nonstop flight from Idaho to Australia takes 26h 58m, covering a distance of 8127 miles. The shortest route is Spokane (GEG) to Sydney (SYD) with an average flight time of 20h 45m.

  • What are the most popular destinations in Australia?

    Based on KAYAK flight searches, the most popular destination is Sydney (95% of total searches to Australia). The next most popular destination is Adelaide (5%).

Book cheap flights from Idaho to Australia

Recent round-trip flight deals

9/9Tue
2 stops
27h 23mBOI-SYD
9/17Wed
1 stop
21h 09mSYD-BOI
$1,061
9/9Tue
2 stops
27h 23mBOI-SYD
9/14Sun
1 stop
21h 09mSYD-BOI
$1,072
7/31Thu
2 stopsAlaska Airlines
37h 22mGEG-SYD
8/16Sat
2 stopsAlaska Airlines
35h 27mSYD-GEG
$1,186
9/8Mon
2 stopsAir New Zealand
26h 00mBOI-SYD
9/15Mon
2 stopsAir New Zealand
26h 24mSYD-BOI
$1,190
7/31Thu
1 stopQantas Airways
19h 16mGEG-SYD
8/16Sat
1 stopQantas Airways
25h 37mSYD-GEG
$1,197
7/31Thu
2 stopsAlaska Airlines
37h 22mGEG-SYD
8/16Sat
2 stopsAlaska Airlines
31h 48mSYD-GEG
$1,210
9/9Tue
2 stopsAir New Zealand
26h 00mBOI-SYD
9/17Wed
2 stopsAir New Zealand
41h 40mSYD-BOI
$1,218
7/31Thu
1 stopUnited Airlines
22h 27mGEG-SYD
8/16Sat
2 stopsUnited Airlines
24h 57mSYD-GEG
$1,286
9/7Sun
1 stopUnited Airlines
24h 47mBOI-SYD
9/16Tue
1 stopUnited Airlines
20h 00mSYD-BOI
$1,358
10/12Sun
1 stopQantas Airways
30h 56mBOI-SYD
11/9Sun
1 stopQantas Airways
23h 34mSYD-BOI
$3,313

Search by stops

Search by airline

Search by price

Last minute flights from Idaho to Australia

Last minute flight, train and bus deals

5/25Sun
multi-stop
27h 51mGEG-SYD
5/27Tue
multi-stop
36h 15mSYD-GEG
$1,826
5/25Sun
multi-stop
27h 51mGEG-SYD
5/27Tue
multi-stop
36h 15mSYD-GEG
$1,842
5/25Sun
multi-stop
30h 39mBOI-SYD
5/27Tue
multi-stop
36h 59mSYD-BOI
$1,870
5/25Sun
multi-stopQantas Airways
24h 33mGEG-SYD
5/27Tue
multi-stopQantas Airways
21h 37mSYD-GEG
$1,877
5/25Sun
multi-stopChina Eastern
33h 25mGEG-SYD
5/27Tue
multi-stopChina Eastern
51h 40mSYD-GEG
$1,931
5/25Sun
multi-stop
25h 05mBOI-SYD
5/27Tue
multi-stop
36h 59mSYD-BOI
$1,969
5/25Sun
multi-stopAir New Zealand
24h 05mBOI-SYD
5/27Tue
multi-stopAir New Zealand
23h 15mSYD-BOI
$2,049
5/25Sun
multi-stop
34h 10mBOI-SYD
5/27Tue
multi-stop
59h 46mSYD-BOI
$2,361
5/25Sun
multi-stop
29h 55mGEG-SYD
5/27Tue
multi-stop
28h 45mSYD-GEG
$4,495
5/25Sun
multi-stop
39h 00mGEG-SYD
5/27Tue
multi-stop
41h 32mSYD-GEG
$6,732

Search by stops

Search by airline

Search by price

Everything you need to know for your flight to Australia

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.

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.