BOI - SYD

$691 Find Cheap Flights from Boise to Sydney

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 Sydney departing on 6/19. 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

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

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boise to Sydney, 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 Boise to Sydney, as well as popular online travel agencies
Travelers love KAYAK
41.299.237 searches in the past 7 days on KAYAK

Save 23% 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.

Everything you should know

Cheapest round-trip
$1,217
Typical prices: $1,449-$1,116
Multiple Airlines
Mon 5/11Mon 5/18
BOI - SYD • 2 stops
Cheapest one-way
$691
Multiple Airlines
Fri 6/19
BOI - SYD • 1 stop
Top airlines
Cheapest • from $1,280 (round-trip)
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Boise and Sydney. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $1,335 (round-trip)
Shortest trip • 20h 50m (one-way)
Insights
Insights
Insights
Insights
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Sydney!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Boise to Sydney (BOI-SYD)

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

Mon, May 11 - Mon, May 18
Multiple Airlines Logo
8:11 am - 12:05 pm
BOI
-
SYD
35h 54m
2 stops
Multiple Airlines Logo
1:15 pm - 10:58 pm
SYD
-
BOI
25h 43m
2 stops
$1,217Multiple Airlines
Sat, Aug 1 - Sat, Aug 15
Alaska Airlines Logo
6:51 pm - 7:05 am
BOI
-
SYD
20h 14m
1 stop
Alaska Airlines Logo
9:10 am - 10:45 pm
SYD
-
BOI
29h 35m
1 stop
$1,280Alaska Airlines
Mon, Apr 27 - Mon, May 4
Multiple Airlines Logo
7:14 pm - 12:05 pm
BOI
-
SYD
24h 51m
2 stops
Multiple Airlines Logo
5:50 pm - 11:01 pm
SYD
-
BOI
21h 11m
1 stop
$1,299Multiple Airlines
Mon, Apr 27 - Mon, May 4
Multiple Airlines Logo
7:14 pm - 7:30 am
BOI
-
SYD
20h 16m
1 stop
Multiple Airlines Logo
9:10 am - 12:34 pm
SYD
-
BOI
19h 24m
1 stop
$1,301Multiple Airlines
Mon, Apr 27 - Mon, May 4
Multiple Airlines Logo
7:14 pm - 12:05 pm
BOI
-
SYD
24h 51m
2 stops
Multiple Airlines Logo
5:50 pm - 12:34 pm
SYD
-
BOI
34h 44m
1 stop
$1,302Multiple Airlines
Mon, May 11 - Mon, May 18
United Airlines Logo
6:58 pm - 6:55 am
BOI
-
SYD
19h 57m
1 stop
United Airlines Logo
10:20 am - 7:11 pm
SYD
-
BOI
24h 51m
1 stop
$1,314United Airlines
Mon, Apr 27 - Mon, May 4
Multiple Airlines Logo
7:14 pm - 7:30 am
BOI
-
SYD
20h 16m
1 stop
Multiple Airlines Logo
5:50 pm - 11:01 pm
SYD
-
BOI
21h 11m
1 stop
$1,323Multiple Airlines
Mon, Apr 27 - Mon, May 4
American Airlines Logo
6:26 pm - 7:05 am
BOI
-
SYD
20h 39m
2 stops
American Airlines Logo
5:50 pm - 11:41 pm
SYD
-
BOI
21h 51m
2 stops
$1,327American Airlines
Sat, May 16 - Sat, May 23
Qantas Airways Logo
7:33 pm - 7:05 am
BOI
-
SYD
19h 32m
1 stop
Qantas Airways Logo
5:50 pm - 10:58 pm
SYD
-
BOI
21h 08m
1 stop
$1,371Qantas Airways
Sat, Aug 1 - Sat, Aug 15
United Airlines Logo
5:00 am - 6:55 am
BOI
-
SYD
57h 55m
2 stops
United Airlines Logo
10:20 am - 9:25 pm
SYD
-
BOI
27h 05m
2 stops
$1,385United Airlines
Booking Insights

KAYAK's insights & trends for Boise to Sydney flights

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

How much is a round-trip flight from Boise to Sydney?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Boise to Sydney departing in May.

Good to know

Low seasonOctober
Cheapest flight$691
Best time to beat the crowds with an average 15% drop in price.
Most popular time to fly with an average 10% increase in price.
Flight from Boise to Sydney

When to book flights from Boise to Sydney

Are your dates flexible? Find out the best times to travel from Boise to Sydney based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Boise to Sydney

  • What is the cheapest flight from Boise to Sydney?

    In the last 3 days, the lowest price for a flight from Boise to Sydney was $691 for a one-way ticket and $1,280 for a round-trip.

  • Do I need a passport to fly between Boise and Sydney?

    A passport is required to fly from Boise to Sydney.

  • Which aircraft models fly most regularly from Boise to Sydney?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Boise to Sydney?

    oneworld, and Star Alliance are the airline alliances operating flights between Boise and Sydney, with oneworld being the most commonly used for this route.

  • Which is the best airline for flights from Boise to Sydney, United Airlines or American Airlines?

    The two airlines most popular with KAYAK users for flights from Boise to Sydney are United Airlines and American Airlines. With an average price for the route of $1,452 and an overall rating of 7.4, United Airlines is the most popular choice. American Airlines is also a great choice for the route, with an average price of $1,296 and an overall rating of 7.1.

  • How does KAYAK find such low prices on flights from Boise to Sydney?

    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 Sydney.

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

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

    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 to Sydney with an airline and back to Boise with another airline. Booking your flights between Boise and SYD can sometimes prove cheaper using this method.

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

    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 Sydney from Boise 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 Sydney

 
See real verified KAYAK customer reviews for airlines flying from Boise to Sydney. 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 Boise to Sydney? 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 9533 reviews
7.7Boarding
6.6Food
8.1Crew
7.1Entertainment
7.3Comfort
Airline reviews

It was perfect! I've never flown with United before, but I definitely will in the future

10.0 ExcellentAnonymous, Apr 2026
SFO - LAS
Read more United Airlines reviews

It was perfect! I've never flown with United before, but I definitely will in the future

I had a cancelled flight because of technical issues going to my destination, and a delayed flight coming home. All told it wasn’t a total bust.

Just a bad day to fly. Flight was delayed from scheduled 6:50 pm departure to 8:50 pm. Combination of factors mostly related to weather at the destination airport (which is where the incoming flight originated) which delayed the inbound flight over an hour. Once on board, we taxied but had to hold again on the taxiway for 10 minutes or so. We did not get wheels up until after 9 pm. The flight was smooth but about 18 minutes from our destination, we had to hold for several minutes more due to weather at ORD. We finally landed at ORD about 11:08 pm (accounting for the time difference, that was about a 3 hour delay from our scheduled departure time). It felt like we were never going to get to our destination. But the flight crew and attendants were very good. The movie selection onboard was also very nice. Got to watch half of a movie just during our taxi from the gate at ATL due to the delay!

Fine. The issues I had were associated with luggage being delayed from Turkey to Tanzania

No meal service to the back of the plane as it started late or was too slow to get it out before it was time to land.

Terrible, if possible won't be flying again anytime soon!

Efficient boarding and early departure. Very smooth flight. Early arrival in ATL. Great flight.

We purchase first class seats for the first time for multiples of standard economy ticket. There was no access to the club lounge and no priority boarding. The meal and the service once on the plane were superior and the seat was nicer, but not worth the price difference. I will be happy to seat in economy and spend the difference on more travel.

The business class seat is exceptional. I wish the food is more palatable.

Wonderful in-seat entertainment with seatback screens and huge selection of quality movies. The ability to bluetooth connect headphones was amazing.

Flight was delayed. No urgency by American Airlines team to assist those with connecting flights. It was basically you are on your own to run through the terminals to try and make your connection. Thanks, Mary

I have never been assaulted they way I was today in Charlotte - shame on American

One of our group members was struggling to walk. In Charlotte we asked for a wheelchair and she was accompanied by Desmond. I was impressed by his patience and attention. In Boston she received the same service. I didn’t get the name of the helper but she went above and beyond in assisting us. A great AA service

Better snacks but flight and crew were amazing on this flight

Found that the plane used for this short flight is smaller and therefore the seats are really squeezed tight.

It was the most un-special flight experience in my life.

Plane was super cold. No entertainment unless you were with mileage program Getting off the plane was super slow

Flight was on-time, boarding was flawless and the crew was friendly.

The staff are very, very professional. It's what flying should feel like.

Flight boarded from Gate 159B, the farthest gate in the LAX Bradley Terminal. While the flight operated on time, the first class cabin attendant made no recognition of my being an Advantage Executive Platinum member.

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

Information on your arrival and departure airports