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BOS - YQY

Find cheap flights from Boston to Sydney from $397

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 5/9. 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
Sun 5/19
Sun 5/26

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, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boston to Sydney, as well as popular online travel agencies
In the last 7 days travelers have searched 44,553,814 times on KAYAK, and here is why:

Save 22% or moreCompare multiple travel sites with one search.

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

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

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
6:05 am - 1:48 amBOS-YQY
18h 43m1 stop
5:00 am - 2:38 pmYQY-BOS
10h 38m2 stops
$728Air Canada
Find Deal
Thu, Jun 6 - Wed, Jun 12
6:05 am - 1:48 amBOS-YQY
18h 43m1 stop
5:00 am - 6:43 pmYQY-BOS
14h 43m1 stop
$751Air Canada
Find Deal
Thu, Jun 6 - Wed, Jun 12
6:00 am - 4:57 pmBOS-YQY
9h 57m1 stop
5:35 pm - 9:28 amYQY-BOS
16h 53m2 stops
$823Air Canada
Find Deal
Tue, May 21 - Fri, May 24
6:15 am - 4:57 pmBOS-YQY
9h 42m2 stops
5:35 pm - 9:28 amYQY-BOS
16h 53m2 stops
$829Air Canada
Find Deal
Tue, May 21 - Fri, May 24
4:10 pm - 1:48 amBOS-YQY
8h 38m1 stop
5:00 am - 3:08 pmYQY-BOS
11h 08m1 stop
$851Air Canada
Find Deal
Sun, May 12 - Thu, May 23
4:10 pm - 1:48 amBOS-YQY
8h 38m1 stop
5:35 pm - 9:25 amYQY-BOS
16h 50m2 stops
$884Air Canada
Find Deal
Sun, May 12 - Thu, May 23
6:05 am - 4:19 pmBOS-YQY
9h 14m2 stops
5:00 am - 6:44 pmYQY-BOS
14h 44m1 stop
$886Air Canada
Find Deal
Fri, Sep 13 - Fri, Sep 20
6:05 am - 4:19 pmBOS-YQY
9h 14m2 stops
5:00 am - 2:37 pmYQY-BOS
10h 37m2 stops
$907Air Canada
Find Deal
Fri, Sep 13 - Fri, Sep 20
9:10 pm - 4:57 pmBOS-YQY
18h 47m2 stops
5:00 am - 8:52 pmYQY-BOS
16h 52m2 stops
Fri, Jun 14 - Sun, Jun 16
8:45 am - 1:48 amBOS-YQY
16h 03m3 stops
5:35 pm - 10:38 pmYQY-BOS
30h 03m2 stops
$1,131
Find Deal
Fri, Jun 14 - Sun, Jun 16

Good to know

Low season

February

High season

August

Cheapest flight

$397
Best time to beat the crowds with an average 56% drop in price.
Most popular time to fly and prices are also 18% 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

  • What is the cheapest flight from Boston to Sydney, Nova Scotia?

    In the last 3 days, the lowest price for a flight from Boston to Sydney, Nova Scotia was $397 for a one-way ticket and $728 for a round-trip.

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

    Yes

  • 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 is the only airline alliance operating flights between Boston and Sydney.

  • 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 YQY 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 airline flying 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.
7.0
Air CanadaOverall score based on 6841 reviews
7.0comfort
6.2food
6.8entertainment
7.8crew
7.2boarding
Airline reviews

It was great to check carryon luggage at no charge when there was no room for ours. A hidden benefit of having low-tier tickets. Also great to stay off plane as long as possible. Airline gave us seats we wanted on this last leg, again at no charge.

8.0 ExcellentAnonymous, Apr 2024DEN - YVR
Read more about Air Canada reviews

It was great to check carryon luggage at no charge when there was no room for ours. A hidden benefit of having low-tier tickets. Also great to stay off plane as long as possible. Airline gave us seats we wanted on this last leg, again at no charge.

The late departure Of two hours waitresses, immature, and gossiping

We had a good flight, service was good and lots of leg room. Service was good and the staff were friendly.

Overall I will say it was a very good experience. It was as comfortable as can be expected for such a long flight - 12 hours from Toronto to Tokyo. Everyone was very pleasant and polite. Even the passengers were cooperative and trying to be nice to each other. Of course the space is limited on such a long flight. The bathrooms were actually very clean. The food was very good. I liked how there was a variety of food options. The in flight entertainment system was also very impressive! There were some children on the flight but they were well behaved and hardly ever crying. Great Job Canada Air! I will definitely fly with Air Canada again!

It was upsetting that the flights were canceled but that was due to weather. I did not receive any vouchers for food or a hotel stay when I was forced to spend the night in Montreal. I was also upset when my seat was changed many times.. The plane seemed old with a non-functioning screen and loose side pockets.. All in all in need of updating. On the positive side, the staff in areas was friendly and helpful.

Lost my bag. My first ever flight with them that they forced me to gate check my bag on, due to them having a 30 year old plane with small carry on bins, and they lost my bag. Never again.

The flight got canceled multiple times and we had to drive their to reach midnight for our next morning interview. Poor and unriable experience. Now have to ask for a refund since we didn't need their rescheduled flight three days later.

Short flight, crew members were very nice, so much so I'll take the return flight next weekend

The trip was fine and uneventful. The seat in business class was very uncomfortable which was disappointing given the extra cost. It was spacious but it felt like I was sitting on metal bars. The food in business class wasn't very good. The flight was ahead of time, the staff was professional and courteous and our luggage arrived safely.

Again we were late leaving Austin , there was no tv screen for the 3.5 hr flight, the pizza I bought was kinda bland

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.
5/9Thu
2 stopsAir Canada
9h 40mBOS-YQY
$397
5/9Thu
1 stopAir Canada
13h 13mBOS-YQY
$419
5/12Sun
2 stopsAir Canada
20h 15mBOS-YQY
$454
5/9Thu
3 stops
17h 48mBOS-YQY
$880

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Boston - Sydney Flights

Departure:

Boston (BOS)United States

Destination:

Sydney (YQY)Canada

Cabin classes: