BOS - SYD

$846 Find Cheap Flights from Boston to Sydney – Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Boston to Sydney departing on 10/11. 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

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Everything you should know

Cheapest return fare
$1,605
Typical prices: $1,921-$2,092
Air Canada
Tue 3/11Tue 17/11
BOS - SYD • 2 stops
Cheapest one-way flight
$846
Typical prices: $987-$3,566
Multiple Airlines
Tue 10/11
BOS - SYD • 3 stops
Direct flights
Not available
There are currently no direct flights between Boston and Sydney. You’ll need at least 1 connection.
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Top stopover airports
Cheapest • Avg $1,750 (return)
Shortest trip • 22h 45m (one-way)
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When to book
in advance
Our data shows that travellers who book at least 3 weeks in advance save around 16% compared to booking last minute.
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When to travel
Cheapest • 13% price drop
Most popular
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Booking Insights
Flight Deals

Cheap Flights from Boston to Sydney (BOS-SYD)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Boston 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 return flight deals from Boston to Sydney

Tue, 3 Nov - Tue, 17 Nov
Air Canada Logo
15:30 - 09:35BOS  Boston Logan Intl-SYD Sydney Kingsford Smith
26h 05m2 stops Montreal Pierre Elliott Trudeau Intl Vancouver Intl
Air Canada Logo
11:20 - 09:58SYD  Sydney Kingsford Smith-BOS Boston Logan Intl
38h 38m2 stops Vancouver Intl Montreal Pierre Elliott Trudeau Intl
$1,605Air Canada
Tue, 27 Oct - Tue, 10 Nov
Air Canada Logo
10:35 - 08:35BOS  Boston Logan Intl-SYD Sydney Kingsford Smith
31h 00m2 stops Montreal Pierre Elliott Trudeau Intl Vancouver Intl
Air Canada Logo
11:20 - 09:58SYD  Sydney Kingsford Smith-BOS Boston Logan Intl
38h 38m2 stops Vancouver Intl Montreal Pierre Elliott Trudeau Intl
$1,605Air Canada
Wed, 16 Sep - Wed, 7 Oct
Air Canada Logo
10:40 - 07:20BOS  Boston Logan Intl-SYD Sydney Kingsford Smith
30h 40m2 stops Montreal Pierre Elliott Trudeau Intl Vancouver Intl
Air Canada Logo
10:20 - 09:50SYD  Sydney Kingsford Smith-BOS Boston Logan Intl
38h 30m2 stops Vancouver Intl Montreal Pierre Elliott Trudeau Intl
$1,605Air Canada
Wed, 21 Oct - Wed, 28 Oct
Air Canada Logo
10:40 - 08:20BOS  Boston Logan Intl-SYD Sydney Kingsford Smith
30h 40m2 stops Montreal Pierre Elliott Trudeau Intl Vancouver Intl
Air Canada Logo
10:20 - 09:58SYD  Sydney Kingsford Smith-BOS Boston Logan Intl
38h 38m2 stops Vancouver Intl Montreal Pierre Elliott Trudeau Intl
$1,606Air Canada
Sun, 23 Aug - Sun, 30 Aug
United Airlines Logo
07:45 - 06:55BOS  Boston Logan Intl-SYD Sydney Kingsford Smith
33h 10m1 stop San Francisco
United Airlines Logo
10:20 - 23:59SYD  Sydney Kingsford Smith-BOS Boston Logan Intl
27h 39m2 stops San Francisco Washington, D.C. Dulles Intl
$1,754United Airlines
Sun, 23 Aug - Sun, 30 Aug
United Airlines Logo
14:00 - 06:55BOS  Boston Logan Intl-SYD Sydney Kingsford Smith
26h 55m1 stop San Francisco
United Airlines Logo
10:20 - 23:59SYD  Sydney Kingsford Smith-BOS Boston Logan Intl
27h 39m2 stops San Francisco Washington, D.C. Dulles Intl
$1,754United Airlines
Sun, 23 Aug - Sun, 30 Aug
United Airlines Logo
05:45 - 07:00BOS  Boston Logan Intl-SYD Sydney Kingsford Smith
35h 15m2 stops Washington, D.C. Dulles Intl Los Angeles
United Airlines Logo
10:20 - 17:07SYD  Sydney Kingsford Smith-BOS Boston Logan Intl
20h 47m1 stop San Francisco
$1,754United Airlines
Sun, 23 Aug - Sun, 30 Aug
Qantas Airways Logo
07:00 - 07:05BOS  Boston Logan Intl-SYD Sydney Kingsford Smith
34h 05m1 stop Los Angeles
Qantas Airways Logo
12:00 - 19:43SYD  Sydney Kingsford Smith-BOS Boston Logan Intl
21h 43m1 stop Dallas/Fort Worth
$1,764Qantas Airways
Wed, 23 Sep - Wed, 30 Sep
Qantas Airways Logo
16:35 - 07:05BOS  Boston Logan Intl-SYD Sydney Kingsford Smith
24h 30m1 stop Los Angeles
Qantas Airways Logo
12:00 - 19:52SYD  Sydney Kingsford Smith-BOS Boston Logan Intl
21h 52m1 stop Dallas/Fort Worth
$1,771Qantas Airways
Tue, 15 Sep - Tue, 29 Sep
Qantas Airways Logo
16:35 - 07:05BOS  Boston Logan Intl-SYD Sydney Kingsford Smith
24h 30m1 stop Los Angeles
Qantas Airways Logo
12:00 - 19:52SYD  Sydney Kingsford Smith-BOS Boston Logan Intl
21h 52m1 stop Dallas/Fort Worth
$1,774Qantas Airways
Booking Insights

KAYAK's insights & trends for Boston to Sydney flights

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

How much is a return flight from Boston to Sydney?

This analysis is based on the cheapest return trip price found on KAYAK in the last 12 months by searching for a flight from Boston to Sydney departing in September.

Flight prices are below average for this route right now.

Flights to Sydney from Boston usually cost between $1,792 and $2,332 in September.
The lowest price found in the past 5 days was $1,605 on Air Canada (16 Sept–7 Oct).

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Boston to Sydney, 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 Boston to Sydney is September, where tickets cost $1,810 (return) on average. On the other hand, the most expensive months are December and January, where the average cost of round-trip tickets is $3,016 and $2,098 respectively.

How far in advance should I book a flight from Boston to Sydney?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Boston to Sydney, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Boston to Sydney, you should book around 3 weeks before departure, which saves you about 16% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 9 weeks before departure.

Good to know

Low season

May

Cheapest flight

$846
Best time to beat the crowds (9% less expensive on average)
Most popular time to fly (45% more expensive on average)
Flight from Boston to Sydney

When to book flights from Boston to Sydney

Are your dates flexible? Find out the best times to travel from Boston to Sydney based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns 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 Boston to Sydney

  • Does Sydney Kingsford Smith Airport have an onsite hotel?

    Yes, Sydney Kingsford Smith Airport has three hotels within its precinct offering exceptionally stylish and premium accommodation. Located at the international terminal, Rydges Hotel offers travelers complimentary shuttle service to and from all terminals. The other two hotels at the airport are the ibis budget Sydney Airport and the Mantra Sydney Airport. Both are located just five minutes away from Terminals 2 and 3.

  • Is Sydney Kingsford Smith Airport linked to the city via a train line?

    Yes, Sydney Kingsford Smith Airport is linked to the city by a line plying the route every ten minutes. The train service, called the Airport Link, is the best way to get to the town from the airport. Airport Link operates two train stations at the airport, one is situated beneath the Domestic Passenger Terminals, while the other is found below the International Passenger Terminal (T1).

  • What are layover options between Boston Logan International Airport and Sydney Kingsford Smith Airport?

    Your layover options will be determined mainly by the airline you are using. If you opt for a relatively quick one-stop flight offered by United Airlines, Virgin Australia, American Airlines, or Qantas Airways, your layover will be in San Francisco, Los Angeles, or Dallas.

  • Does Boston Logan International Airport have a kid's play area?

    Yes, Boston Logan International Airport features a kid's port at Terminal C equipped with vintage-style aircraft replicas, an airfield carpet, and cloud-painted walls. The airport also has another kids' playing area located at Terminal B near Gate B30.

  • What is the cheapest flight from Boston to Sydney?

    In the last 5 days, the lowest price for a flight from Boston to Sydney was $846 for a one-way ticket and $1,605 for a return.

  • Which airports will I be using when flying from Boston to Sydney?

    When flying out of Boston you will be using Boston Logan Intl. You will be landing at Sydney, also known as Sydney Kingsford Smith.

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

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

  • Which airline alliances offer flights from Boston to Sydney?

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

  • Which is the best airline for flights from Boston to Sydney, Qantas Airways or United Airlines?

    The two airlines most popular with KAYAK users for flights from Boston to Sydney are Qantas Airways and United Airlines. With an average price for the route of $2,124 and an overall rating of 7.5, Qantas Airways is the most popular choice. United Airlines is also a great choice for the route, with an average price of $1,892 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Boston 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 Boston to Sydney.

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

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

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Sydney with an airline and back to Boston with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Boston 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 Boston up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Boston to Sydney

  • If you are looking to travel directly from Boston Logan International Airport to Sydney Kingsford Smith Airport, you will have to opt for a one-stop flight. This is because, currently, no airlines offer direct flights on the route. United Airlines, Virgin Australia, American Airlines, and Qantas Airways are among the major airlines that offer quick one-stop flights between the two airports.
  • Boston Logan International Airport (BOS) has lactation bays for traveling mothers before and after security check-in at Terminal A. The lactation bays feature folding seats, changing tables, and a sink to ensure maximum comfortability. The airport also has Mamava pods at Terminal B near Gate C8 and on Terminal E's departure level near Gate E9.
  • Aside from being the busiest airport in Australia, Sydney Kingsford Smith Airport (SYD) is the only airport serving greater Sydney. It connects the city to 46 domestic destinations such as Brisbane, Canberra, Hobart, and Auckland. It is the primary hub for Qantas Airlines and a secondary hub for Virgin Australia.
  • If you arrive at Sydney Kingsford Smith Airport early and have time to spare, you can visit the observation deck located at Terminal 1. The deck is fitted with telescopes for observing planes land and take off and general happenings at the airport. The airport also has a plane spotter mound next to the control tower called the Shep's Mound. The bank has two raised platforms overlooking the airfield, expansive grassed areas, and dedicated car parking.
  • Suppose you require special luggage services at Sydney Kingsford Smith Airport. In that case, you are lucky as the airport has a luggage storage facility operated by Smarte Carte, located in Terminal 1, and open from 6:00 am to 9:30 pm.

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

Information on your arrival and departure airports