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BOS - SYD

$914 Find Cheap Flights from Boston to Sydney – Compare and Save

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1 adult, Economy, 0 bags

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Everything you should know

Cheapest return flight
$1,660
Typical prices: $1,826-$2,427
Qantas Airways
Fri 19/10Fri 2/11
BOS - SYD • 1 stop
Cheapest one-way flight
$914
Typical prices: $911-$1,476
Qantas Airways
Sun 4/11
BOS - SYD • 1 stop
Direct flights
Not available
There are currently no direct flights between Boston and Sydney. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to book
14 weeks
in advance
Our data shows that travellers who book at least 14 weeks in advance save around 14% compared to booking last minute.
Insights
Insights
When to travel
May
Cheapest • 13% price drop
July
Most popular
Good to know
+1
Good to know
+1
Top stopover airports
Toronto Pearson Intl (YYZ)
Cheapest • Avg $1,994 (return)
San Francisco (SFO)
Shortest trip • 22h 48m (one-way)
Insights
Insights
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We hope you enjoy your trip to Sydney!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Boston to Sydney (BOS-SYD)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Boston to Sydney

Mon, 19 Oct - Mon, 2 Nov
Qantas Airways Logo
17:45 - 08:05BOS  Boston Logan Intl-SYD Sydney Kingsford Smith
23h 20m1 stop Los Angeles
Qantas Airways Logo
11:10 - 16:29SYD  Sydney Kingsford Smith-BOS Boston Logan Intl
21h 19m1 stop Los Angeles
$1,660Qantas Airways
Mon, 16 Nov - Mon, 23 Nov
Air Canada Logo
10:25 - 09:35BOS  Boston Logan Intl-SYD Sydney Kingsford Smith
31h 10m2 stops Montreal Pierre Elliott Trudeau Intl Vancouver Intl
Air Canada Logo
11:20 - 21:28SYD  Sydney Kingsford Smith-BOS Boston Logan Intl
26h 08m2 stops Vancouver Intl Montreal Pierre Elliott Trudeau Intl
$1,716Air Canada
Mon, 1 Feb - Wed, 3 Mar
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 - 21:25SYD  Sydney Kingsford Smith-BOS Boston Logan Intl
26h 05m2 stops Vancouver Intl Montreal Pierre Elliott Trudeau Intl
$1,717Air Canada
Mon, 1 Feb - Wed, 3 Mar
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 - 21:25SYD  Sydney Kingsford Smith-BOS Boston Logan Intl
26h 05m2 stops Vancouver Intl Montreal Pierre Elliott Trudeau Intl
$1,719Air Canada
Wed, 21 Oct - Wed, 28 Oct
Qantas Airways Logo
07:00 - 07:30BOS  Boston Logan Intl-SYD Sydney Kingsford Smith
33h 30m1 stop Los Angeles
Qantas Airways Logo
11:10 - 23:52SYD  Sydney Kingsford Smith-BOS Boston Logan Intl
27h 42m1 stop Los Angeles
$1,753Qantas Airways
Mon, 19 Oct - Mon, 2 Nov
American Airlines Logo
19:45 - 08:05BOS  Boston Logan Intl-SYD Sydney Kingsford Smith
45h 20m1 stop Los Angeles
American Airlines Logo
11:15 - 16:29SYD  Sydney Kingsford Smith-BOS Boston Logan Intl
21h 14m1 stop Los Angeles
$1,756American Airlines
Sun, 25 Oct - Mon, 2 Nov
Qantas Airways Logo
06:28 - 06:55BOS  Boston Logan Intl-SYD Sydney Kingsford Smith
33h 27m1 stop Dallas/Fort Worth
Qantas Airways Logo
11:10 - 21:58SYD  Sydney Kingsford Smith-BOS Boston Logan Intl
26h 48m1 stop Los Angeles
$1,756Qantas Airways
Mon, 19 Oct - Mon, 2 Nov
United Airlines Logo
18:17 - 07:55BOS  Boston Logan Intl-SYD Sydney Kingsford Smith
22h 38m1 stop San Francisco
United Airlines Logo
09:15 - 19:14SYD  Sydney Kingsford Smith-BOS Boston Logan Intl
25h 59m2 stops Houston George Bush Intcntl Chicago O'Hare Intl
$1,757United Airlines
Mon, 19 Oct - Mon, 2 Nov
United Airlines Logo
15:45 - 08:00BOS  Boston Logan Intl-SYD Sydney Kingsford Smith
25h 15m2 stops Houston George Bush Intcntl Los Angeles
United Airlines Logo
10:55 - 18:34SYD  Sydney Kingsford Smith-BOS Boston Logan Intl
23h 39m2 stops Los Angeles Newark
$1,757United Airlines
Mon, 19 Oct - Mon, 2 Nov
American Airlines Logo
19:45 - 08:05BOS  Boston Logan Intl-SYD Sydney Kingsford Smith
45h 20m1 stop Los Angeles
American Airlines Logo
11:15 - 16:29SYD  Sydney Kingsford Smith-BOS Boston Logan Intl
21h 14m1 stop Los Angeles
$1,762American Airlines
Booking Insights

Price, demand, and travel trends for Boston to Sydney flights

Use KAYAK data on prices, travel dates, airlines, and seasonal trends to compare options and book flights with more confidence.

How much is a return flight from Boston to Sydney?

Return flights from Boston to Sydney typically range from $1,826 to $2,427. The lowest price found in the past 5 days was $1,660 on Qantas Airways.

What's the cheapest day of the week to fly from Boston to Sydney?

Based on deals KAYAK users found in the last 12 months, Thursday is the cheapest day of the week to fly from Boston to Sydney. It’s 4% cheaper than the average day, while Saturday is the most expensive, with prices 11% higher.

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

•May is the cheapest month to fly from Boston to Sydney at $1,811 return.
•December ($2,620) and January ($2,269) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 44% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are flights from Boston to Sydney the cheapest?

Flights from Boston to Sydney are cheapest 14 weeks before departure. Booking in this window typically costs about 14% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Find deals

Key details for Boston to Sydney flights

Low season

May

Cheapest flight

$914
Beat the crowds with an average 62% drop in traveller numbers.
The most popular month to fly with an average 49% increase in traveller numbers.
One-way 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

Your Boston to Sydney flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines, and booking tips.

  • Which cabin classes can I book on flights from Boston to Sydney?

    Three cabin classes are available on flights from Boston to Sydney:

    • Economy class
    • Premium Economy Class
    • Business Class

  • How long is a flight from Boston to Sydney?

    A direct flight from Boston to Sydney takes 00m, covering 26,134 km.

  • Do I need a passport to fly from Boston to Sydney?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • How much should I expect to pay for a Boston to Sydney flight?

    Return flights from Boston to Sydney range from $1,826 to $2,427, with an average of $2,082 over the past 12 months. Anything below $1,826 counts as a good deal.

  • How expensive are last-minute Boston to Sydney flights?

    Last-minute fares on this route (booked within two weeks of departure) run 7% above the $2,082 route average. Book 14 weeks before departure for the lowest fares.

  • How are flight prices from Boston to Sydney looking right now?

    One-way fares from Boston to Sydney are currently lower than usual. Average one-way flight prices are about $931, which is 17% below the typical average for this route.

  • Which car hire options are available at Sydney Kingsford Smith Airport (SYD)?

    Sydney Kingsford Smith Airport (SYD) hosts 5 major car hire companies, with daily rates starting from around $15 for economy cars. Top options include:

    • Bargain Car Rentals
    • East Coast Car Rentals
    • EverythingFleet
    • YESDRIVE CAR RENTAL
    • No Birds

  • Which airports can I use when flying from Boston to Sydney?

    Flights from Boston to Sydney usually depart from Boston Logan Intl (BOS) and arrive at Sydney Kingsford Smith (SYD).

  • Which airports do connecting flights from Boston to Sydney pass through?

    One-stop flights from Boston to Sydney most commonly connect through:

    • Los Angeles (LAX) – 65% of one-stop connections
    • San Francisco (SFO) – 14% of one-stop connections
    • Dallas/Fort Worth (DFW) – 13% of one-stop connections
    • Doha Hamad Intl (DOH) – 3% of one-stop connections

  • Can I save money by using flexible dates for flights from Boston to Sydney?

    Yes. Flexible dates can save you up to 13% on flights from Boston to Sydney. Thursday is the cheapest departure day at $2,015 return on average, while Saturday is the most expensive at $2,312, a difference of $297.

    KAYAK's flexible dates feature shows options up to three days before and after your selected dates, making it easier to compare nearby fares.

  • How much time can I save by choosing a different stopover airport from Boston to Sydney?

    Flying via San Francisco (SFO) gives the shortest average 1-stop total travel time of 22h 48m, compared to 22h 59m via Dallas/Fort Worth (DFW) and 23h 05m via Los Angeles (LAX).

  • What is the time difference between Boston and Sydney?

    Sydney is 15 hours ahead of Boston (Eastern Australia Time vs Eastern Time). Plan for the time shift when scheduling connections or first-day activities.

  • What popular places can I visit in Sydney?

    Some of the most popular sights in Sydney are Sydney Opera House, Star Casino, and Capitol Theatre. These are among the most viewed places in Sydney on KAYAK.

  • 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.

Your guide to booking Boston to Sydney flights

Get tips on when to book, when to fly, and what to know before your trip.
  • If your dates are flexible, aim for a Thursday departure and avoid flying on Saturday. On this route, Thursday flights average $2,015, about $297 less than Saturday fares (13% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 14 weeks before you fly. On this route, that window historically saves about 14% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Boston to Sydney trip for May. Fares historically average $1,811 return in that month – typically $809 less than the most expensive month, which is December (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Sydney Kingsford Smith Airport.

    • Travelodge Hotel Sydney Airport
    • Rydges Sydney Airport Hotel
    • ibis budget Sydney Airport
  • 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.

More options for your flight from Boston to Sydney

Complete your trip to Sydney with a hotel stay or car hire

Car hire in Sydney
Hotels in Sydney
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