SYD - BOI

$650 Find Cheap Flights from Sydney to Boise

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 Boise departing on 9/2. 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

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

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

Cheap Flights from Sydney to Boise (SYD-BOI)

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

Thu, Oct 30 - Mon, Nov 3
American Airlines Logo
11:20 am - 10:24 pmSYD-BOI
28h 04m2 stops
American Airlines Logo
2:06 pm - 9:00 amBOI-SYD
24h 54m2 stops
$923American Airlines
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Thu, Oct 30 - Mon, Nov 3
American Airlines Logo
11:20 am - 10:24 pmSYD-BOI
28h 04m2 stops
American Airlines Logo
2:06 pm - 9:00 amBOI-SYD
24h 54m2 stops
$926American Airlines
Find Deal
Thu, Oct 30 - Mon, Nov 3
United Airlines Logo
10:20 am - 1:30 pmSYD-BOI
20h 10m1 stop
United Airlines Logo
2:31 pm - 9:15 amBOI-SYD
24h 44m2 stops
$939United Airlines
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Thu, Oct 30 - Mon, Nov 3
Delta Logo
9:40 am - 3:05 pmSYD-BOI
22h 25m1 stop
Delta Logo
4:00 pm - 8:30 amBOI-SYD
22h 30m1 stop
$943Delta
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Sat, Dec 20 - Sun, Dec 28
Delta Logo
10:40 am - 2:08 pmSYD-BOI
21h 28m1 stop
Delta Logo
5:36 am - 8:30 amBOI-SYD
32h 54m2 stops
$1,749Delta
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Sat, Dec 20 - Sat, Jan 10
Delta Logo
2:15 pm - 4:26 pmSYD-BOI
20h 11m2 stops
Delta Logo
1:10 pm - 6:50 amBOI-SYD
23h 40m2 stops
$1,799Delta
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Sat, Dec 20 - Sun, Dec 28
Delta Logo
2:15 pm - 2:08 pmSYD-BOI
17h 53m1 stop
Delta Logo
3:00 pm - 8:30 amBOI-SYD
23h 30m1 stop
$1,847Delta
Find Deal
Sat, Dec 20 - Sun, Dec 28
Air Tahiti Nui Logo
5:50 pm - 11:02 pmSYD-BOI
47h 12m3 stops
Air Tahiti Nui Logo
7:15 am - 8:50 pmBOI-SYD
43h 35m3 stops
$2,263Air Tahiti Nui
Find Deal
Booking Insights

KAYAK's insights & trends for Sydney to Boise flights

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

What is the cheapest month to fly from Sydney to Boise?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Sydney to Boise, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Sydney to Boise is August, where tickets cost $1,045 (return) on average. On the other hand, the most expensive months are July and January, where the average cost of round-trip tickets is $1,498 and $1,409 respectively.

Good to know

Low seasonMay
Cheapest flight$650
Best time to beat the crowds but there is an average 3% increase in price.
Most popular time to fly and prices are also 7% lower on average.
Flight from Sydney to Boise

When to book flights from Sydney to Boise

Are your dates flexible? Find out the best times to travel from Sydney to Boise 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 Sydney to Boise

  • What is the cheapest flight from Sydney to Boise?

    In the last 3 days, the lowest price for a flight from Sydney to Boise was $650 for a one-way ticket and $923 for a round-trip.

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

    Yes, you’ll need a passport to travel to Boise from Sydney.

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

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

  • Which airline alliances offer flights from Sydney to Boise?

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

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

    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 Boise.

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

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

    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 Boise with an airline and back to Sydney with another airline. Booking your flights between Sydney and BOI 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 Sydney to Boise?

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

Reviews of the top airline flying from Sydney to Boise

 
See real verified KAYAK customer reviews for airlines flying from Sydney to Boise. 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 Boise? 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 8915 reviews
8.1Crew
7.3Comfort
7.7Boarding
7.1Entertainment
6.6Food
Airline reviews

Had to cancel first flight because Airporter Bus took over 3 hrs to get to airport which resulted in an extra $378 dollar fare . Is there anyway I can be reimbursed for initial fare since it was not my fault? Sent from my iPhone EJ Ledet

2.0 MediocreAnonymous, Aug 2025SEA - DEN
Read more United Airlines reviews

Had to cancel first flight because Airporter Bus took over 3 hrs to get to airport which resulted in an extra $378 dollar fare . Is there anyway I can be reimbursed for initial fare since it was not my fault? Sent from my iPhone EJ Ledet

For both flights I requested a gluten free meal, they didn’t have one nor were there other options.

Plane was crowded and even when we hit altitude, the plane was hot, not enough air flow.

Flight attendant in first class gave poor service (like he didn't want to be there) and food was awful. We sat waiting for gate upon arrival over 45 mins.

The experience was great, the crew was very polite and hospitable. I will definitely make if my go to airlines.

Inoperable monitor left no entert for 9 hours. Crew was not helpful Food was awful.

Stuck on tarmac for two hours plus a 5.5 hour flight. Rude flight attendant. And no meals, not even for purchase!

Excellent flight. Boarding was efficient and departure was on time. Smooth flight with on time arrival. Deplaning was also efficient.

This flight was perfect. No complaints and only the highest regard for the crew and ground staff and how they executed perfectly. I fly a lot with United and would request predictability and transparency in their operations instead of last minute changes.

This is for UA2274 from Houston to Sacramento. The flight was delayed arriving due to mechanical issues so we left about 3 hours later than scheduled. When boarding the plane the temperature inside was excessive - likely close to 100. Pilot apologized and said it was going to improve at altitude, which it did. But before that I honestly thought there might have been more delays removing passengers made ill from the heat. We were delayed leaving due to another mechanical issue. There was not water on the plane due to a panel that was not secured. They did that quickly, but the combination of mechanical issues was rather disturbing and did not reflect well on United.

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

Information on your arrival and departure airports

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