Cheap flights from Boston to Sydney

from as little as £1,070

55 nights in Sydney, departing Boston on 14 / Sep / 2025 with Air New Zealand (price found 21 hours ago)

Subject to availability, prices correct of the last 24 hours
Sydney

The Boston / Sydney route

All 16264 km of it

Cheap flight deals for this route

See what's hot at the moment

Sydney flight facts

What you need to know

Alternative flights from the UK to Sydney

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Sydney

14 / Sep / 2025 is currently the lowest priced day of the year to fly the Boston/Sydney route. There are around 165 flights on any given week from the UK to Sydney and the cheapest month to fly right now is September.

Not suitable? Try running another search or viewing all cheap flight deals.

Min / Max Temperature (°C)
LOWEST

8 °C

AVG

17 °C

HIGHEST

26 °C

Rainfall (mm)
LOWEST

60 mm

AVG

95.8 mm

HIGHEST

130 mm

Key facts about Sydney

How to get cheap flights from Boston to Sydney

Tips and advice from our flight experts

We've compared all 165 flights that go to or via Sydney every week, to find the best deal for you. Air New Zealand usually has the cheapest flights from Boston to Sydney, so keep an eye out for them in your search results. If they’re not the cheapest option, try searching by month to compare costs throughout the week.

We scan thousands of airfares from hundreds of airlines across the globe. We've found that ten airlines operate the 16264 km flight from Boston to Sydney. Flights during peak season tend to be the most expensive – so if you want to go during that time, it's best to book early. Or you could try to get a last-minute flight deal.

Qatar Airways, Etihad Airways & Air New Zealand are the most popular airlines for flying from Boston to Sydney, so look out for their deals and offers. To find the best price, try searching by month. Or, if you want to bag a last-minute offer, keep an eye on Netflights to monitor the prices.

Flights from Boston to Sydney usually take about 28 hrs 5 mins. Once you've selected your flight, you'll need to fill out your details to book. And don’t forget to look at Netflights’ hotels and car hire – you could save even more money on your trip when you book everything in one go.

Other popular destinations near Sydney

Where other people are flying to

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