Find flights
Deals
Insights
When to book
FAQs & Tips
Airlines

BOS - SYD

$692 Find cheap flights from Boston to Sydney

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 6/24. 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
0 bags
Wed 6/12
Wed 6/19

Search hundreds of travel sites at once for deals on flights to Sydney

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boston to Sydney.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boston to Sydney.
In the last 7 days travelers have searched 41,771,603 times on KAYAK, and here is why:

Save 21% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Bundle and saveSave money when you bundle your flight + hotel.

Cheap flight deals from Boston to Sydney (BOS-SYD)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip 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 and deals for you by selecting your travel dates.
Choose your dates
8:30 am - 2:40 pmBOS-SYD
40h 10m1 stop
4:20 pm - 7:25 pmSYD-BOS
41h 05m2 stops
$1,402
Find Deal
Mon, Jun 24 - Tue, Jul 9
7:40 pm - 7:20 amBOS-SYD
45h 40m2 stops
9:20 am - 9:31 amSYD-BOS
38h 11m2 stops
$1,421Air Canada
Find Deal
Sun, Jun 23 - Tue, Jul 9
8:41 pm - 7:05 amBOS-SYD
44h 24m1 stop
7:25 pm - 10:40 pmSYD-BOS
41h 15m2 stops
$1,432Qantas Airways
Find Deal
Sat, Jul 27 - Sun, Aug 4
1:35 pm - 7:00 amBOS-SYD
27h 25m1 stop
10:20 am - 7:39 pmSYD-BOS
23h 19m1 stop
$1,438United Airlines
Find Deal
Sun, Jun 23 - Tue, Jul 9
8:35 am - 7:05 amBOS-SYD
32h 30m1 stop
8:55 am - 12:16 amSYD-BOS
29h 21m2 stops
$1,439Qantas Airways
Find Deal
Mon, Jun 24 - Mon, Jul 8
1:40 pm - 7:00 amBOS-SYD
27h 20m1 stop
10:20 am - 11:59 pmSYD-BOS
27h 39m1 stop
$1,445United Airlines
Find Deal
Sun, Aug 4 - Mon, Aug 26
3:12 pm - 6:55 amBOS-SYD
25h 43m2 stops
10:20 am - 7:27 pmSYD-BOS
23h 07m2 stops
$1,449United Airlines
Find Deal
Tue, Jun 11 - Tue, Jun 18
5:36 pm - 7:05 amBOS-SYD
23h 29m1 stop
11:15 am - 8:05 pmSYD-BOS
24h 50m2 stops
$1,548American Airlines
Find Deal
Tue, Jul 30 - Tue, Nov 26
8:35 am - 7:05 amBOS-SYD
32h 30m1 stop
9:15 am - 7:21 pmSYD-BOS
24h 06m2 stops
$1,549American Airlines
Find Deal
Mon, Jun 10 - Mon, Jun 17
10:50 am - 6:35 amBOS-SYD
29h 45m1 stop
9:25 am - 11:57 pmSYD-BOS
28h 32m1 stop
$1,911Delta
Find Deal
Mon, May 27 - Mon, Jun 10

Flights from Boston to Sydney - Travel Insights & Trends

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.

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

The average price of all flights from Boston to Sydney clicked on KAYAK for each day over the last 12 months.
For Boston to Sydney, Monday is the cheapest day to fly on average and Friday is the most expensive. Flying from Sydney back to Boston, the best deals are generally found on Saturday, with Monday being the most expensive.

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 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 March, where tickets cost $1,264 on average. On the other hand, the most expensive months are December and July, where the average cost of tickets is $2,225 and $2,128 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for 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 month.
To get a below average price on the flight from Boston to Sydney, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 79 days before departure.

Which airlines provide the cheapest flights from Boston to Sydney?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
The best deals for a one-way ticket found by KAYAK users over the last 3 days were on Japan Airlines ($949) and Delta ($967). The cheapest round-trip tickets were found on Air Canada ($1,421) and Qantas Airways ($1,432).

Good to know

Low season

April

High season

February

Cheapest flight

$692
Best time to beat the crowds with an average 4% drop in price.
Most popular time to fly and prices are also 16% lower 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 round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips 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 3 days, the lowest price for a flight from Boston to Sydney was $692 for a one-way ticket and $1,402 for a round-trip.

  • Do I need a passport to fly between Boston and Sydney?

    Yes

  • 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?

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

  • What is the most popular layover when flying to Sydney from Boston?

    Los Angeles is the most popular layover city among KAYAK users traveling from Boston to Sydney.

  • Which is the best airline for flights from Boston to Sydney, Air New Zealand or Delta?

    The two airlines most popular with KAYAK users for flights from Boston to Sydney are Air New Zealand and Delta. With an average price for the route of $1,796 and an overall rating of 8.2, Air New Zealand is the most popular choice. Delta is also a great choice for the route, with an average price of $1,564 and an overall rating of 8.0.

  • 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 round-trip ticket. You could then fly to Sydney with an airline and back to Boston with another airline. Booking your flights between Boston and SYD can sometimes prove cheaper using this method.

  • 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.

See more FAQs

Top tips for finding a cheap flight from BOS 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.
See more tips

Top 5 airlines serving from Boston to Sydney

 
See real verified KAYAK customer reviews for airlines flying from Boston to Sydney. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Boston to Sydney? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
DeltaOverall score based on 10736 reviews
7.9Comfort
8.2Boarding
8.6Crew
8.0Entertainment
7.4Food
Airline reviews

Absolutely nothing flight was cancelled and delayed for 2 days. Barely a heads up I want a full refund

2.0 MediocreDevan, May 2024AUS - BOS
Read more about Delta reviews

Absolutely nothing flight was cancelled and delayed for 2 days. Barely a heads up I want a full refund

The plane from SNA wouldn’t start after 5 tries. The team gave me an option of flying direct from LAX and giving me a Lyft ride there! Perfect!

Best airline! Always friendly and welcoming. Skyclub was great and loved the fast free wifi on board. I also love that you can pre-order your meal on the app!

Atlanta boarding crew at gate were filled with arrogance and were disrespectful. In flight crew showed indifference to the needs of passengers. This is about the flight from ATL to BDL.

The plane was FREEZING SEATS UNCOMFORTABLE Otherwise smooth Thank you

Boarding was chaotic. I didn’t finish dinner because I went to bed early. Breakfast omelet was overcooked and tasteless but croissant was better than usual. Plane was dirty—crumbs in every seam and lavatory was poorly maintained (paint peeling, etc.) and toilet paper had not been refreshed before takeoff. No cubby for storage in first and seat was narrow.

Boarding was somewhat chaotic. Unable to evaluate crew or food/drink because captain kept them seated due to turbulence. Have no idea if entertainment was offered.

West Jet has a horrible boarding process and the seats have no cushion.

Everything went smoothly. I didn’t like that when I booked in the main cabin my wife and I weren’t seated together. One would think when booking on an option that allows picking your seat. They would put you and your travel partner together. Had to call to get it sorted. They did fix.

The gate area was incredibly short staffed, with one representative manning 4-5 flights, which caused a 3 hr delay in boarding even though the plane was all ready to leave. Other flights also were delayed because of this. The flight crew was awesome and I feel bad for the only gate worker on call, but Delta needs to hire more employees.

The international flight from Sydney to Dallas had great food. I have travelled a lot over the years and this has been the most memorable in my experience so far.

flight delayed, wait in crowded gate. staff inattentive. had to remind them to get my coat from their closet. not many new movies, media choices were limited (nothing compared to Emirates.) Lounge was crowded

flight delayed, wait in crowded gate. staff inattentive. had to remind them to get my coat from their closet. not many new movies, media choices were limited (nothing compared to Emirates.)

Initial flight was cancelled so moved to an alternative flight. As a result, stuck in a middle seat. Flight then place in holding pattern prior to landing resulting in a very late trip home.

There was nothing I didn’t like, prices a little lower would help

Flight delay was informed at the last minute. Food quality is not up to Qantas standard I was unable to book an online boarding pass on any of my 6 flights.

Rescheduled after ticket purchased and issued, not 2 or 3 times and not a fourth but by 5 times, by Qantas, that's right, 5 changes! Forcing an overnight stay in Chile and need for visa. Qantas can no longer provide basic services as a national or international service provider. Professionalism is extinct and the provider needs to be mentored and educated in perfecting who to operate as an airline. Qantas is the spirit of Australian dissatisfaction.

Amazing! Was put on the earlier flight and I requested for an aisle seat and was given it. Thanks Qantas!

The crew were amazing - A great job. They made me feel special and valued.

Boarding was terrible - the ground staff member Fredeya at lax was more military than customer service, have never encountered a customer service representative as rude as her. Apart from that all other staff were wonderful and the flight was good.

Not a fan of the diagonal partially enclosed business class seats or how they have to be converted to beds manually by crew. I prefer more isolation and user control for switching to lie flat.

No lounge access with “United First” ticket. False alarm about late flight, jeopardizing connection. Wrong meal. Loose power socket would not hold plug, could not charge device. In-flight access to text messaging did not work. Toilet seat on plane would not stay up.

We ended up with seats in the very back. So they did not recline. Have no idea why, we reserved and checked in very early. The isles were very narrow and the seats had very little leg room. But they did give us water, and a snack.

Energetic crew - flight full of swiftied going to Taylor's opening show in Paris! Long lines for bathroom made out kind of suck though

Check in etc was very good. As for on the plane, it was like flying in a freezer. It was so cold, i have flown for years and never been so cold on a plane. Staff on board said its always cold when flying which is a load of rubbish. They wouldnt put any heating on and now i have the flu because of this .

I’ve had a couple flights this week on United that were delayed by an hour or more

Flight was delayed 2.5 hours - a big deal on an overnight when you plan to sleep.

I feel like they have upgraded the app since I last flew United and I found it to be super helpful. I had stopped flying United unless absolutely necessary and my experience on this trip indicates they have been working hard to improve their services.

Surprisingly easy! I was hesitant to try this, but the cost swayed me. I actually felt like I had less stress than all the taxiing and possible delays that occur with short regional flights where you spend less time in the air than getting to and from the plane..

This flight was delayed multiple times and eventually canceled around 2-3ish. Original take off time was around 10:30am. By 3, there were no other options out of Houston, so stuck in Houston for from 3pm - 11am the next day.

Liked - nothing. Disliked - delayed 35+ min sitting on the plane. Caused me to miss my connection in Charlotte. American Airlines is the worst US Air Carrier company with atrocious customer service.

Worst situation ever! I booked my tickets for this trip on Alaska Airlines. I guess AA is a partner and we flew nonstop from Eugene to PHX on an AA jet. I had to pay for luggage from PHX to EUG. And this was an Alaska Airlines reservation paid for with Alaska airlines credit card! Got to the PHX airport and was not able to check bags because of some weird issue with the AA software. My reservation had to be the-entered by the agent. I will never pick another American Airlines flight on the Alaska Airlines website. While on vacation, I tried to upgrade our seats for the trip home. The request just buffered and never went through. I tried four times and was charged four times on my credit card. The card was charged but the seats were never changed. What a wreck!

Left from gate 30 minutes before flight. Never been late to a flight ever. It says 15 minutes before explicitly on the ticket.

I like the boarding process, it was fast. The seat doesn’t have a TV for a long flight and food wasn’t served, just snacks.

Use planes with TVs on flights over 4 hours. The free entertainment was a cheap in between solution for a very long flight that you don't even bother providing meals or decent snacks.

Even though we left CMI late, we mostly made up the time.

Delayed almost 4 hours for a 45 minute flight with no explanation.

Again, multiple delays and I eventually just canceled and drove!

Great crew. Very comfortable business seats with nice bedding. Good food. We were delayed to let late passengers on the flight, but otherwise great experience.

Great crew. We were delayed so that late passengers could get on the flight. Love the bedding in business class. Good food. Great experience.

They canceled the flight on us very close to the flight date .

It took 66 hours to get from Seattle to Tel Aviv. As a minor, I was left for more than 12 hours in Toronto and Frankfurt without hotel and food vouchers. It took 5 layovers. It was insane and not okay

It was delayed but got us to YYZ. I had great copassengers.

Flew SEA-CA, then CA-NRT. First flight was short but very uncomfortable, dirty, and had very small overhead storage space. The seats and fans were not cleaned and had visible dirt on them. Second flight was perfect.

My second flight ended up being through United and it was fine. Again, just frustrating that it was so late.

My experience was pretty frustrating because the first leg of my flight on United (though booked through Air Canada) was delayed causing me to miss my connecting flight on Air Canada. This could have been an easy solve as there was a direct flight later that morning via Air Canada that they easily could have put me on which would have only gotten me to my destination 2 1/2 hours later but because United and Air Canada don’t seem to have good communication they gave me the run around both telling me to talk with the other which I did three times to no avail. I ended up taking the delayed flight and getting on a new connecting flight which ended up getting me to my destination 6 hours later and I missed the event I was planning to go to this evening.

Everything went smoothly and as expected. We were on time and one flight arrived early.

First time flying Air Canada and the trip was very pleasant! They did a great job getting us out of Toronto and into Rome (early!) For an international flight it was very enjoyable.

This is not a Business Class equipped airplane and even the crew apologize before take over BUT BUT Air Canada charged full business class fare

All was good, except our baggage was lost for most of a day. We are thankful that it was found quickly and delivered to our hotel. Rouge was fine outside of that problem.

Book cheap flights from Boston to Sydney

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Boston to Sydney found on KAYAK in the last 72 hours.
6/24Mon
1 stop
40h 10mBOS-SYD
$692
6/24Mon
3 stops
33h 14mBOS-SYD
$728
7/17Wed
2 stops
41h 47mBOS-SYD
$733
8/11Sun
1 stopDelta
29h 40mBOS-SYD
$967
8/11Sun
3 stopsUnited Airlines
32h 00mBOS-SYD
$1,025
6/5Wed
2 stopsAir Canada
31h 00mBOS-SYD
$1,064
6/2Sun
2 stopsAir Canada
31h 00mBOS-SYD
$1,138
6/2Sun
1 stopQantas Airways
23h 20mBOS-SYD
$1,335
6/5Wed
1 stopQantas Airways
32h 30mBOS-SYD
$1,343
7/17Wed
3 stopsUnited Airlines
31h 55mBOS-SYD
$1,397

Search by stops

Search by airline

Search by price

Last minute flights from Boston to Sydney

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Boston to Sydney that are departing in the next 10 days.
5/17Fri
multi-stop
30h 25mBOS-SYD
5/24Fri
multi-stop
38h 30mSYD-BOS
$1,868
5/18Sat
multi-stopAir Canada
25h 50mBOS-SYD
5/31Fri
multi-stopAir Canada
26h 08mSYD-BOS
$1,942
5/18Sat
multi-stopAir Canada
35h 20mBOS-SYD
5/31Fri
multi-stopAir Canada
26h 08mSYD-BOS
$1,966
5/18Sat
multi-stopCathay Pacific
34h 13mBOS-SYD
5/31Fri
multi-stopCathay Pacific
26h 15mSYD-BOS
$2,053
5/18Sat
multi-stopCathay Pacific
46h 48mBOS-SYD
5/31Fri
multi-stopCathay Pacific
28h 45mSYD-BOS
$2,125
5/17Fri
multi-stopLATAM Airlines
51h 50mBOS-SYD
5/24Fri
multi-stopLATAM Airlines
41h 47mSYD-BOS
$2,346
5/18Sat
multi-stopLATAM Airlines
51h 50mBOS-SYD
5/31Fri
multi-stopLATAM Airlines
41h 30mSYD-BOS
$2,361
5/18Sat
multi-stopQantas Airways
33h 05mBOS-SYD
5/31Fri
multi-stopQantas Airways
26h 56mSYD-BOS
$2,632
5/18Sat
multi-stopQantas Airways
33h 05mBOS-SYD
5/29Wed
multi-stopQantas Airways
21h 26mSYD-BOS
$11,968
5/16Thu
multi-stopBritish Airways
31h 50mBOS-SYD
5/18Sat
multi-stopBritish Airways
42h 42mSYD-BOS
$32,763

Search by stops

Search by airline

Search by price

Boston - Sydney Flights

Departure:

Boston (undefined)United States

Destination:

Sydney (SYD)Australia

Return flight deals:

Sydney - Boston

Cabin classes:

Browse destinations: