$579 Find Cheap Flights from Boise to Australia

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Boise to Australia departing on 2/19. 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

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Cheap Flights from Boise to Australia

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Sydney
Sydney2 stops$1,152
Adelaide
Adelaide2 stops$1,435
Sydney
Sydney2 stops$1,152
Adelaide
Adelaide2 stops$1,435

Book Cheap Boise to Australia Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Boise to Australia 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 Boise to Australia

Mon, May 4 - Sun, May 17
Multiple Airlines Logo
6:55 pm - 10:40 am
BOI
-
SYD
23h 45m
2 stops
Multiple Airlines Logo
11:55 am - 5:41 pm
SYD
-
BOI
21h 46m
2 stops
$1,152Multiple Airlines
Tue, May 5 - Mon, May 18
Air New Zealand Logo
6:55 pm - 8:45 am
BOI
-
SYD
21h 50m
2 stops
Air New Zealand Logo
9:55 am - 7:16 pm
SYD
-
BOI
25h 21m
2 stops
$1,162Air New Zealand
Mon, May 4 - Wed, May 13
Alaska Airlines Logo
7:14 pm - 7:05 am
BOI
-
SYD
19h 51m
1 stop
Alaska Airlines Logo
9:10 am - 10:58 pm
SYD
-
BOI
29h 48m
1 stop
$1,178Alaska Airlines
Mon, May 4 - Wed, May 13
Air New Zealand Logo
6:55 pm - 8:45 am
BOI
-
SYD
21h 50m
2 stops
Air New Zealand Logo
9:55 am - 10:22 pm
SYD
-
BOI
28h 27m
2 stops
$1,189Air New Zealand
Sun, Feb 8 - Mon, Feb 16
American Airlines Logo
1:58 pm - 6:55 am
BOI
-
SYD
22h 57m
1 stop
American Airlines Logo
2:05 pm - 10:22 pm
SYD
-
BOI
26h 17m
1 stop
$1,200American Airlines
Sun, Feb 8 - Mon, Feb 16
American Airlines Logo
12:37 pm - 9:00 am
BOI
-
SYD
26h 23m
2 stops
American Airlines Logo
11:20 am - 6:02 pm
SYD
-
BOI
24h 42m
2 stops
$1,202American Airlines
Sat, Feb 14 - Wed, Feb 18
United Airlines Logo
6:55 pm - 9:30 am
BOI
-
ADL
21h 05m
1 stop
United Airlines Logo
2:55 pm - 9:11 pm
ADL
-
BOI
23h 46m
1 stop
$1,655United Airlines
Sat, Feb 14 - Wed, Feb 18
United Airlines Logo
10:53 am - 9:30 am
BOI
-
ADL
29h 07m
1 stop
United Airlines Logo
2:55 pm - 9:32 pm
ADL
-
BOI
24h 07m
2 stops
$1,659United Airlines
Sat, Feb 14 - Wed, Feb 18
Singapore Airlines Logo
7:11 am - 8:50 am
BOI
-
ADL
56h 09m
3 stops
Singapore Airlines Logo
10:15 am - 8:55 pm
ADL
-
BOI
52h 10m
2 stops
$5,903Singapore Airlines
Sat, Feb 14 - Wed, Feb 18
Singapore Airlines Logo
7:11 am - 8:50 am
BOI
-
ADL
56h 09m
3 stops
Singapore Airlines Logo
10:15 am - 8:55 pm
ADL
-
BOI
52h 10m
2 stops
$5,904Singapore Airlines
Booking Insights

KAYAK's insights & trends for Boise to Australia flights

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

Which airlines provide the cheapest flights from Boise to Australia?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Boise to Australia were found on Air New Zealand ($1,162) and Alaska Airlines ($1,178).

Good to know

Low seasonSeptember
Cheapest flight$579
Best time to beat the crowds with an average 2% drop in price.
Most popular time to fly with an average 18% increase in price.
Flight from Boise to Sydney

FAQs - booking Australia flights

  • How does KAYAK find such low prices on flights from Boise 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 Boise to Australia.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Boise 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 Boise 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 Boise 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 Boise 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 Boise to Australia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from Boise to Australia

 
Need help choosing which airline to fly with from Boise to Australia? 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 9171 reviews
7.7Boarding
7.1Entertainment
7.3Comfort
6.6Food
8.1Crew
Airline reviews

Was happy we finally got upgraded in 1st class. The seat getting old. The cushiness need some improvement.

10.0 ExcellentDavid, Jan 2026
IAD - BNA
Read more United Airlines reviews

Was happy we finally got upgraded in 1st class. The seat getting old. The cushiness need some improvement.

Yet another flight in which beverage and snack service was skipped. Other that that, firmly mediocre. Landed early, to gate late due to congestion at the gates. Airline's fault or airports fault: unknown.

Ineffective communication with United resulted in lost baggage. Their Baggage Tracing counter at MUC was shut down from 11:00-14:15 on my arrival. Undertrained, underinformed staff had me Running all over MUC to find someone to help me to no avail. Staff was rude, unhelpful, and unable to effectively use the systems they did have operational. They refused to contact United in any way or provide any accommodation or other resources while I waited for my luggage. This has destroyed my downstream itinerary. If they had even the slightest visibility I may have been able to reschedule/plan, but again, their staff provided nothing, and did nothing more than their website, which doesn’t even work on a standard phone browser. Miserable failure at all levels that weren’t associated with the operation of the aircraft.

Miserable. They moved my seat, but canceled the next leg of my flight. I resolved the issue at my transfer, but that resulted in lost luggage that has taken days off my schedule with no resolution. Worse, they fail to interface effectively with Lufthansa, forcing me to bounce between two equally useless help desks. The apps are unable to handle the situation, the bag dropped off the tracker, and while the call centers are polite, they do not provide written information to assist with cross-airline communication.

left on time, reasonable boarding process arrived early luggage came out quickly

I like flying first class, and United has a nice one

Teeny tiny bathrooms, crew was not realistic about when we'd arrive.

Check-in, boarding and the flight from Phoenix to Houston was quick and easy. The flight from Houston to Shreveport was delayed 5 hours. It was frustrating but I think United handled it the best they could.

Some flight attendants were great others were cranky. Seats were very tight and sitting on an aisle was very hard as the carts and people walking constantly bumped shoulder and arm.

It was great with United overall except for two things. 1) It was a 5-hour flight and we were with kids, so we were asking for extra snacks. They were extremely reticent to dole them out even though there wasn't any meal and the kids were starting to hit their limit towards the end. 2) Baggage didn't arrive until 80 minutes after we landed.

Delayed, no updates, had a rewards number but was not working

The seats from lax to DFW was so tight that I could not move my legs . No WiFi and had to pay . Not a good selection of entertainment

AA should improve their in air internet & entertainment options. Seems unreasonable to charge $20/hr and should have some form of free connections. The entertainment options are also pretty limited, movies are outdated and the series only show 3-5 episodes.

The professionals have excellent customer service, the seats don´t have enough space.

We were upgraded to First Class and it was a great flight

Amazing I love American. I’ll never fly anyone else if I can help it.

I love American. I’ll never fly anyone else if I can help it.

Flight delay and multiple gate changes including a change near boarding time to another terminal, which in DFW is a pain. Pre-boarding delay and also a further delay on the ground after boarding. About an hour and a half total delay.

On the plus side, crew was attentive, drinks were cold, and in-flight entertainment selection was better than some other airlines. On the negative aide, Plane was delayed almost an hour, either no announcements from the gate crew. Biscoff cookies are gross, appreciate airlines that give a choice. Also, crew had no personality or enthusiasm at all.

Little warm on the plane and delayed for an hour

Everything you need to know for your flight from Boise to Australia

Information on your arrival and departure airports