$1,593 Cheap Flights from Boston Logan International (BOS) to Sydney (SYD) in 2025

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Flight deals from Boston Logan International to Sydney

Looking for a cheap last-minute deal or the best return flight from Boston Logan International to Sydney? Find the lowest prices on one-way and return tickets right here.

Sydney.$1,596 per passenger.Departing Fri, 26 Sep, returning Tue, 28 Oct.Return flight with Frontier Airlines and Air Canada.Outbound indirect flight with Frontier Airlines, departs from Boston Logan International on Fri, 26 Sep, arriving in Sydney.Inbound indirect flight with Air Canada, departs from Sydney on Tue, 28 Oct, arriving in Boston Logan International.Price includes taxes and charges.From $1,596, select.

Sydney.$1,615 per passenger.Departing Thu, 11 Sep, returning Mon, 15 Sep.Return flight with Frontier Airlines and United.Outbound indirect flight with Frontier Airlines, departs from Boston Logan International on Thu, 11 Sep, arriving in Sydney.Inbound indirect flight with United, departs from Sydney on Mon, 15 Sep, arriving in Boston Logan International.Price includes taxes and charges.From $1,615, select.

Sydney.$1,699 per passenger.Departing Sat, 2 May, returning Tue, 19 May.Return flight with Fiji Airways.Outbound indirect flight with Fiji Airways, departs from Boston Logan International on Sat, 2 May, arriving in Sydney.Inbound indirect flight with Fiji Airways, departs from Sydney on Tue, 19 May, arriving in Boston Logan International.Price includes taxes and charges.From $1,699, select.

Sydney.$1,718 per passenger.Departing Mon, 25 Aug, returning Sun, 7 Sep.Return flight with Delta.Outbound indirect flight with Delta, departs from Boston Logan International on Mon, 25 Aug, arriving in Sydney.Inbound indirect flight with Delta, departs from Sydney on Sun, 7 Sep, arriving in Boston Logan International.Price includes taxes and charges.From $1,718, select.

Sydney.$1,801 per passenger.Departing Thu, 23 Oct, returning Wed, 29 Oct.Return flight with Spirit Airlines and Air Canada.Outbound indirect flight with Spirit Airlines, departs from Boston Logan International on Thu, 23 Oct, arriving in Sydney.Inbound indirect flight with Air Canada, departs from Sydney on Wed, 29 Oct, arriving in Boston Logan International.Price includes taxes and charges.From $1,801, select.

Sydney.$1,816 per passenger.Departing Fri, 21 Nov, returning Fri, 28 Nov.Return flight with jetBlue and United.Outbound indirect flight with jetBlue, departs from Boston Logan International on Fri, 21 Nov, arriving in Sydney.Inbound indirect flight with United, departs from Sydney on Fri, 28 Nov, arriving in Boston Logan International.Price includes taxes and charges.From $1,816, select.

Sydney.$1,822 per passenger.Departing Sun, 14 Sep, returning Fri, 12 Dec.Return flight with Qantas.Outbound indirect flight with Qantas, departs from Boston Logan International on Sun, 14 Sep, arriving in Sydney.Inbound indirect flight with Qantas, departs from Sydney on Fri, 12 Dec, arriving in Boston Logan International.Price includes taxes and charges.From $1,822, select.

Sydney.$1,902 per passenger.Departing Wed, 10 Dec, returning Fri, 16 Jan.Return flight with United and Air Canada.Outbound indirect flight with United, departs from Boston Logan International on Wed, 10 Dec, arriving in Sydney.Inbound indirect flight with Air Canada, departs from Sydney on Fri, 16 Jan, arriving in Boston Logan International.Price includes taxes and charges.From $1,902, select.

Find the cheapest month to fly from Boston Logan International to Sydney

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

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Boston Logan International to Sydney: Alternative routes

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

Boston to Sydney: Flight information

The things to know before you go.

Cheapest flight found	$1,596
Cheapest month to fly	September

Finding cheap flights from Boston Logan International to Sydney: Frequently asked questions

How much are return flights from Boston Logan International to Sydney?

The best price we found for a return flight from Boston Logan International to Sydney is $1,596. 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.

Which airlines fly direct from Boston Logan International to Sydney?

Currently, there are no airlines that fly direct from Boston Logan International to Sydney. But we found flights with one or more stops from $1,596.

How many flights are there a week from Boston Logan International to Sydney?

As of August 2025, there are no flights flying from Boston Logan International to Sydney.

When is the cheapest time to fly from Boston Logan International to Sydney?

The cheapest month to fly from Boston Logan International to Sydney is usually September.

Which upcoming date is cheapest to fly from Boston Logan International Airport to Sydney Airport on?

After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Boston Logan International Airport to Sydney Airport on Friday, 26 September 2025.

Can I get a direct flight from Boston Logan International Airport to Sydney Airport?

No airlines currently offer direct flights between Boston Logan International Airport and Sydney Airport. Most routes have one or more stops.

How can I find the best flight deal to Sydney?

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.

When is the best time to book flights to Sydney?

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.

Which is the cheapest airline to fly from Boston Logan International Airport to Sydney with?

Currently, Frontier Airlines offers the cheapest flight tickets to Sydney.

Flying from Logan International Airport (BOS) to Sydney (Kingsford Smith) Airport (SYD): what you need to know

Sydney's timezone is UTC+11, which makes Sydney 15 hours ahead of Boston.
Your BOS to SYD flight won't wait if you're running late, so show up at the airport on time. Arrive up to one hour in advance for domestic flights and two hours ahead when you're travelling internationally.
You'll likely experience longer lines during popular months such as August. Arriving up to four hours in advance for an international flight and two hours for a domestic departure is a good idea.
We make it simple to book a flight with a stopover. To see all your options for tickets from Logan International Airport to Sydney (Kingsford Smith) Airport, deselect 'Direct flights only.' Then, pick a flight with a stop long enough to tour the city of your choice. Worthwhile stopovers between BOS and SYD include:
- San Francisco International Airport
- Dallas/Fort Worth International Airport
- Los Angeles International Airport

How to find the cheapest flights from Logan International Airport (BOS) to Sydney (Kingsford Smith) Airport (SYD)

Currently, $713 is the lowest price we've seen for a one-way Logan International Airport to Sydney (Kingsford Smith) Airport flight. The best price for a return plane ticket is $1,593. Bear in mind that fares can change due to demand when booking.
It's usually best to book early if you're hoping to get cheap tickets from BOS to SYD. That's because flight prices are based on demand, which tends to rise closer to departure.
The 'Whole month' search function shows you the cheapest flights from Logan International Airport to Sydney (Kingsford Smith) Airport throughout the entire month. It's a good way to find a bargain if your plans are flexible.
Picking up cheap flights from BOS to SYD couldn't be easier with Price Alerts. All you need to do is set up one of these automatic alerts and we'll get in touch as soon as there's a better deal.
Pick your ideal arrival and departure times, airlines and number of stops with the filters. Or sort your results by 'Cheapest' to see the best deals on flights from Logan International Airport to Sydney (Kingsford Smith) Airport.

Handy information about Logan International Airport (BOS)

You'll find BOS at One Harborside Drive.
73.94% of flights that take off from Logan International Airport reach their destination on time.
Logan International Airport is about 5 kilometres from central Boston. If you're driving, catching a cab or ride-sharing from the centre, it'll take 10 minutes or so to get there, depending on the traffic.
Expect a journey time of roughly 25 minutes on public transport.
Need a convenient hotel near BOS? If you're boarding an early flight from Logan International Airport to Sydney (Kingsford Smith) Airport, these stays will have you sleeping moments from your check-in counter:

Arriving at Sydney (Kingsford Smith) Airport (SYD)

If you're coming in on a late Logan International Airport to Sydney (Kingsford Smith) Airport flight, few things beat the convenience of staying close to the terminal. Grab your bags from the carousel and then be showered and relaxing soon after at one of these options near SYD:
Go where the road takes you with a Sydney (Kingsford Smith) Airport rental car. Book your wheels from simba car hire, Bargain Car Rentals or Yes Drive and find adventure across Sydney and beyond.
Booking your vehicle from Sydney (Kingsford Smith) Airport about two weeks in advance can help you secure the lowest rate.

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

Sydney (Kingsford Smith) Airport to the centre of Sydney has a drive time of around 20 minutes. It's approximately 18 kilometres away.
Travelling to the centre on public transport takes about 25 minutes.

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

April is the most popular month for flights from Logan International Airport to Sydney (Kingsford Smith) Airport. To avoid the crowds, head to Sydney in April.
Book your flight from Logan International Airport to Sydney (Kingsford Smith) Airport for January if you want to explore Sydney during its warmest month. You can expect temperatures of between 17ºC (63ºF) and 32ºC (90ºF).
Search for cheap tickets from BOS to SYD in July if you like travelling in cooler conditions. Temperatures are at their lowest around then, ranging between 5ºC (41ºF) and 19ºC (66ºF) on average.

Explore more of Australia

You've seen Sydney, now it's time to explore more of Australia. Travel around 241 kilometres south-west to Canberra to tick off its popular sights. From Australian War Memorial to National Gallery of Australia and Parliament House, there's plenty to keep you on the go.
If you're interested in discovering another corner of Australia, head for Newcastle, roughly 121 kilometres north-east of Sydney. Newcastle Beach, Nobbys Beach and Merewether Beach are key reasons to visit.