$723 Find Cheap Flights from Sydney to Idaho

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Sydney to Idaho departing on 4/7. 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
1 adult, Economy, 0 bags

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 in flight searches from Sydney to Idaho, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Sydney to Idaho, as well as popular online travel agencies
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Flight Deals

Book Cheap Sydney to Idaho Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Sydney to Idaho that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Sydney to Idaho

Wed, Dec 3 - Sun, Dec 7
Delta Logo
10:40 am - 3:13 pmSYD-BOI
22h 33m1 stop
Delta Logo
3:54 pm - 8:30 amBOI-SYD
22h 36m1 stop
$1,514Delta
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Wed, Dec 3 - Sun, Dec 7
Delta Logo
10:40 am - 8:20 pmSYD-BOI
27h 40m2 stops
Delta Logo
3:54 pm - 8:30 amBOI-SYD
22h 36m1 stop
$1,519Delta
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Thu, Dec 18 - Tue, Jan 6
Delta Logo
10:40 am - 10:05 pmSYD-BOI
29h 25m1 stop
Delta Logo
7:25 am - 8:30 amBOI-SYD
31h 05m1 stop
$1,783Delta
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Thu, Dec 18 - Mon, Dec 22
Delta Logo
10:40 am - 6:51 pmSYD-BOI
26h 11m2 stops
Delta Logo
3:30 pm - 8:30 amBOI-SYD
23h 00m2 stops
$1,788Delta
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Mon, Dec 15 - Mon, Dec 22
American Airlines Logo
5:45 pm - 11:39 pmSYD-BOI
23h 54m2 stops
American Airlines Logo
2:18 pm - 9:00 amBOI-SYD
24h 42m2 stops
$1,892American Airlines
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Mon, Dec 15 - Mon, Dec 22
United Airlines Logo
11:20 am - 1:35 pmSYD-BOI
20h 15m1 stop
United Airlines Logo
8:30 am - 9:15 amBOI-SYD
30h 45m1 stop
$1,902United Airlines
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Mon, Dec 15 - Fri, Dec 19
American Airlines Logo
5:45 pm - 11:39 pmSYD-BOI
23h 54m2 stops
American Airlines Logo
2:18 pm - 7:25 amBOI-SYD
23h 07m2 stops
$2,339American Airlines
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Mon, Dec 15 - Fri, Dec 19
American Airlines Logo
2:05 pm - 10:25 pmSYD-BOI
26h 20m1 stop
American Airlines Logo
2:18 pm - 7:25 amBOI-SYD
23h 07m2 stops
$2,525American Airlines
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Fri, Jan 2 - Fri, Jan 9
Alaska Airlines Logo
9:40 pm - 11:13 amSYD-BOI
31h 33m2 stops
Alaska Airlines Logo
5:40 am - 7:45 pmBOI-SYD
20h 05m2 stops
$2,572Alaska Airlines
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Mon, Dec 15 - Mon, Dec 22
Qantas Airways Logo
9:55 pm - 11:05 pmSYD-BOI
43h 10m2 stops
Qantas Airways Logo
7:15 am - 9:00 amBOI-SYD
31h 45m1 stop
$2,858Qantas Airways
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Booking Insights

KAYAK's insights & trends for Sydney to Idaho flights

Get data-powered insights and trends into flights from Sydney to Idaho to help you find the cheapest flights, the best time to fly and much more.

Which airlines fly non-stop between Sydney and Idaho?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for round-trip flights from Sydney to Idaho.

There is just one airline that flies from Sydney to Idaho direct and that is United Airlines. The best round-trip deal found from United Airlines for the route is to Boise (BOI) and costs $1,019.

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Good to know

Low seasonOctober
Cheapest flight$723
Best time to beat the crowds with an average 3% drop in price.
Most popular time to fly with an average 5% increase in price.
Flight from Sydney to Boise

FAQs - booking Idaho flights

  • How does KAYAK find such low prices on flights from Sydney 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 Sydney to Idaho.

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

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

 
See real verified KAYAK customer reviews for airlines flying from Sydney to Idaho. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. 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 Sydney 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 9014 reviews
7.3Comfort
7.7Boarding
7.1Entertainment
8.1Crew
6.6Food
Airline reviews

United has come a long way, it’s been a fantastic experience traveling with them.

10.0 ExcellentPaul, Nov 2025LHR - ORD
Read more United Airlines reviews

United has come a long way, it’s been a fantastic experience traveling with them.

Even though we were delayed, we were able to make our connection

Starlink wifi on the Embraer E175 is an excellent experience. I was able to connect and work from IAD all the way to approach into BTV.

Great crew, excellent landing, good food. Over all great experience. Thank you!

Older aircraft, no meal, only food was for purchase. Not impressed United.

United needs to step up their game. Delayed flight leaving Seattle, San Francisco. Older aircraft, not very comfortable.

Always wish for more healthy, gluten free options. We have to bring our own.

Having a long layover, I was very appreciative of the ability to stand by for an earlier flight. Other airlines like Delta have refused this to me in the past, just to be mean (because my ticket class wasn't high enough). United went out of their way to help me get to my destination early, which I really appreciated given that it was the third leg of a 24+ hour journey for me.

This flight leg was fantastic - super comfortable and a great selection of things to watch on the TV. Staff were excellent, really above and beyond.

Other than a way way too cold cabinets for the entire flight, all was great

Everything you need to know for your flight from Sydney to Idaho

Information on your arrival and departure airports

Sydney (SYD)