Cheap Flights from Boise to Sydney

Compare Boise to Sydney flight deals

Find the cheapest month or even day of the year to fly to Sydney

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Find the cheapest month to fly from Boise to Sydney

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Boise to Sydney flights are currently cheapest in April.

Boise to Sydney: Alternative routes

Compare routes from Boise to Sydney below. You may find an airport to fly into that's cheaper, faster, or easier than Sydney.

Boise to Sydney: Flight information

The things to know before you go.
Cheapest flight foundR 8,976
Cheapest month to flyApril

Finding cheap flights from Boise to Sydney: Frequently asked questions

The best price we found for a return flight from Boise to Sydney is R 16,634. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Boise to Sydney. But we found flights with one or more stops from R 16,634.
As of February 2026, there are no flights flying from Boise to Sydney.
The cheapest month to fly from Boise to Sydney is usually March.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Boise Airport to Sydney Airport on Wednesday, 25 March 2026.
No airlines currently offer direct flights between Boise Airport and Sydney Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Sydney but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Sydney is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Alaska Airlines offers the cheapest flight tickets to Sydney.

Flying from Boise Air Terminal (Gowen Field) Airport (BOI) to Sydney (Kingsford Smith) Airport (SYD): what you need to know

  • Sydney is 17 hours ahead of Boise and observes the UTC+11 timezone.

  • Arriving two hours before an international flight and one hour ahead of a domestic departure are golden rules for stress-free travel. Be at the airport on time to board your BOI to SYD flight.

  • Flying during a peak month like July? Major public holidays and other popular seasons can mean longer queues and delays at airport checkpoints. Be extra cautious and arrive up to four hours before international flights and two hours before domestic departures.

  • Think about adding a stopover when booking your ticket from Boise Air Terminal (Gowen Field) Airport to Sydney (Kingsford Smith) Airport. Just deselect 'Direct flights only' to break up your trip, or maybe even explore a new city along the way. Check out these options between BOI and SYD:

    • San Francisco International Airport

    • Los Angeles International Airport

    • Dallas/Fort Worth International Airport

How to find the cheapest flights from Boise Air Terminal (Gowen Field) Airport (BOI) to Sydney (Kingsford Smith) Airport (SYD)

  • Currently, R 8,976 is the cheapest price we've found for a one-way Boise Air Terminal (Gowen Field) Airport to Sydney (Kingsford Smith) Airport flight. The best price for a return ticket is R 16,634. Keep in mind that fares can change due to demand when booking.

  • It's usually smart to book as early as possible if you're looking for cheap tickets from BOI to SYD. That's because airlines change prices based on demand, which tends to increase closer to the date of departure.

  • If you're willing to be flexible with your trip dates, use the 'Whole month' search tool. It'll show you the cheapest price in every month when looking for a flight from Boise Air Terminal (Gowen Field) Airport to Sydney (Kingsford Smith) Airport.

  • You don't need to check every day to see if fares have gone down when you set up a Price Alert. We'll notify you the moment there's a better deal on cheap flights from BOI to SYD.

  • Select your ideal departure and arrival times, number of stops and airlines with the filters. Alternatively, sort your results by 'Cheapest' to get the best deals on flights from Boise Air Terminal (Gowen Field) Airport to Sydney (Kingsford Smith) Airport.

Handy information about Boise Air Terminal (Gowen Field) Airport (BOI)

  • You'll find BOI at 3201 Airport Way.

  • Boise Air Terminal (Gowen Field) Airport scores high marks for on-time performance. 83.53% of flights that depart BOI reach their destination on time.

  • Central Boise to Boise Air Terminal (Gowen Field) Airport is approximately 18 kilometres. Depending on traffic, it'll take about 20 minutes to get there if you're driving, catching a cab or ride-sharing.

  • Planning to catch public transport? You can expect a journey time of around 1 hour 35 minutes.

  • Get your journey off to a relaxed start by staying near BOI. Whether you've booked an early flight from Boise Air Terminal (Gowen Field) Airport to Sydney (Kingsford Smith) Airport or just don't like being rushed, these stays are perfect:

Arriving at Sydney (Kingsford Smith) Airport (SYD)

  • If you have a late Boise Air Terminal (Gowen Field) Airport to Sydney (Kingsford Smith) Airport flight, few things beat the convenience of being near the terminal. Grab your luggage from the carousel and then be showered and sleeping shortly after at one of these hotels near SYD:

  • Grab a Sydney (Kingsford Smith) Airport rental car and explore Sydney and beyond with your own wheels. Simba car hire, Bargain Car Rentals and Yes Drive are leading providers to choose from here.

  • For the best deal, book your vehicle from Sydney (Kingsford Smith) Airport around two weeks before travelling.

Getting from Sydney (Kingsford Smith) Airport (SYD) to central Sydney

  • Sydney (Kingsford Smith) Airport to central Sydney has a drive time of about 20 minutes. It's approximately 18 kilometres away.

  • It'll take around 25 minutes if you're travelling on public transport.

When to fly to Sydney (Kingsford Smith) Airport (SYD)

  • The quietest month for a flight from Boise Air Terminal (Gowen Field) Airport to Sydney (Kingsford Smith) Airport is April, while April is the most popular. Pick the best time to visit Sydney based on whether you prefer a more fast-paced or easygoing experience.

  • Book your flight from Boise Air Terminal (Gowen Field) Airport to Sydney (Kingsford Smith) Airport for January if you'd like to explore Sydney during its warmest month. You can expect temperatures of between 17ºC (63ºF) and 32ºC (90ºF).

  • Search for cheap tickets from BOI to SYD in July if you like cooler conditions. Temperatures are at their lowest around then, ranging between 5ºC (41ºF) and 19ºC (66ºF) on average.

Explore more of Australia

  • Sydney has loads to offer, but there are so many other parts of Australia you should also see. Around 241 kilometres south-west of Sydney, a trip to Canberra will keep you on the go. Check out popular attractions like Australian War Memorial, National Gallery of Australia and Parliament House.

  • Around 121 kilometres north-east of Sydney, Newcastle is another essential stop in Australia. Experience major highlights starting with Newcastle Beach, Nobbys Beach and Merewether Beach.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.