Title: CA $709 Cheap Flights from Boston (BOS) to Sydney (SYD) - Expedia.ca ![](https://images.trvl-media.com/place/178312/136253ce-3061-45f8-b8d7-9d9fb2223786.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](https://images.trvl-media.com/place/178312/136253ce-3061-45f8-b8d7-9d9fb2223786.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # CA $709 Cheap Flights from Boston (BOS) to Sydney (SYD) [View CA $709 flight on Tue, Dec 9, 2025](https://expedia.ca/Flights-Search?trip=oneway&leg1=from:BOS,to:SYD,departure:09/12/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:708.21&airProductToken=AQqZAQoyCMGGARIEODYwNxjBkwEgmF0o2KP_AjCtpP8COEtAAFgBagVCQVNJQ3IIS0xWUDAwQkEKMQjBhgESAzMxMRiYXSC4jQEo-KT_AjDCp_8COEtAAVgBagVCQVNJQ3IIS0xWUDAwQkEKMAjBhgESAjMzGLiNASCSHiiwqP8CMOuv_wI4S0ABWAFqBUJBU0lDcghLTFZQMDBCQRIKCAIQARgCKgJBQxgBIgQIARABKAIoAygEMA0) - [Roundtrip](?flightType=roundtrip) - [One-way](?flightType=oneway) - [Multi-city](?flightType=multicity) ### Travellers Adults ChildrenAges 2 to 17 InfantsYounger than 2 EconomyPremium economyBusiness classFirst class Leaving from Going to Departing Returning Add a place to stay Add a car Direct flights only ## Popular airlines from Logan International Airport (BOS) to Sydney Airport (SYD) - ![Emirates](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_EK.svg) Emirates [](https://www.expedia.ca/Flights-Search?leg1=from:bos,to:syd,departure:12/11/2025TANYT&leg2=from:syd,to:bos,departure:19/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"EK"}}]) - ![Qantas Airways](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_QF.svg) Qantas Airways [](https://www.expedia.ca/Flights-Search?leg1=from:bos,to:syd,departure:12/11/2025TANYT&leg2=from:syd,to:bos,departure:19/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"QF"}}]) - ![Air Canada](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AC.svg) Air Canada [](https://www.expedia.ca/Flights-Search?leg1=from:bos,to:syd,departure:12/11/2025TANYT&leg2=from:syd,to:bos,departure:19/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AC"}}]) - ![Air New Zealand](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_NZ.svg) Air New Zealand [](https://www.expedia.ca/Flights-Search?leg1=from:bos,to:syd,departure:12/11/2025TANYT&leg2=from:syd,to:bos,departure:19/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"NZ"}}]) - ![Qatar Airways](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_QR.svg) Qatar Airways [](https://www.expedia.ca/Flights-Search?leg1=from:bos,to:syd,departure:12/11/2025TANYT&leg2=from:syd,to:bos,departure:19/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"QR"}}]) - ![Cathay Pacific](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_CX.svg) Cathay Pacific [](https://www.expedia.ca/Flights-Search?leg1=from:bos,to:syd,departure:12/11/2025TANYT&leg2=from:syd,to:bos,departure:19/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"CX"}}]) - ![British Airways](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_BA.svg) British Airways [](https://www.expedia.ca/Flights-Search?leg1=from:bos,to:syd,departure:12/11/2025TANYT&leg2=from:syd,to:bos,departure:19/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"BA"}}]) ![notification illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__notification.svg) ### Be in the know Get alerts if flight prices drop or rise\* ![deals illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__deals.svg) ### Book smarter Save up to 30% on select hotels after you book a flight\* ![trophy illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__trophy.svg) ### Earn twice Earn your airline miles on top of our rewards [Sign in](https://www.expedia.ca/login) ## Cheap flights from Boston (BOS) to Sydney (SYD) Prices were available within the past 7 days and start at CA $709 for one-way flights and CA $1,516 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Roundtrip ![Air Canada](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AC.gif) Sun, Mar 8 - Tue, Mar 17 BOS Boston SYD Sydney CA $1,516 Roundtrip found 3 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:BOS,to:SYD,departure:08/03/2026TANYT&leg2=from:SYD,to:BOS,departure:17/03/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1515.94&airProductToken=AQqZAQoyCMGGARIEODYwNxjBkwEgmF0ovIyHAzCRjYcDOEtAAFgBagVCQVNJQ3IIS0xYUDAwQkEKMQjBhgESAzMxMRiYXSC4jQEo3I2HAzCmkIcDOEtAAVgBagVCQVNJQ3IIS0xYUDAwQkEKMAjBhgESAjMzGLiNASCSHiiUkYcDMM-YhwM4S0ABWAFqBUJBU0lDcghLTFhQMDBCQQqaAQowCMGGARICMzQYkh4guI0BKJjohwMw_u6HAzhLQABYAWoFQkFTSUNyCEtMWFAwMEJBCjIIwYYBEgMxMTIYuI0BIJjOASi-8YcDMMfzhwM4S0ABWAFqBUJBU0lDcghLTFhQMDBCQQoyCMGGARIDNzcyGJjOASDBkwEol_SHAzD99IcDOEtAAVgBagVCQVNJQ3IIS0xYUDAwQkESCggCEAEYAioCQUMYASIECAEQASgCKAMoBDAN) ![American Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AA.gif) Sat, Jan 24 - Wed, Feb 18 BOS Boston SYD Sydney CA $1,684 Roundtrip found 16 hours ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:BOS,to:SYD,departure:24/01/2026TANYT&leg2=from:SYD,to:BOS,departure:18/02/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1683.90&airProductToken=AQppCjQIwYIBEgQxMTk3GMGTASCLuAEo_KmDAzCHrYMDOEJAAFgBagZCQVNJQ0JyCE9KVzBGWlpaCjEIwYIBEgI3MxiLuAEgkh4ohK6DAzCItYMDOEJAAVgBagZCQVNJQ0JyCE9KVzBGWlpaCmgKMQjBggESAjcyGJIeIIu4ASj0uIUDMLK_hQM4QkAAWAFqBkJBU0lDQnIIT0pYMEZaWloKMwjBggESAzM4MhiLuAEgwZMBKPnChQMwtMWFAzhCQAFYAWoGQkFTSUNCcghPSlgwRlpaWhIKCAEQARgBKgJBQRgBIgQIARABKAIoAygEMAs) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Sat, Jan 24 - Wed, Feb 18 BOS Boston SYD Sydney CA $1,708 Roundtrip found 16 hours ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:BOS,to:SYD,departure:24/01/2026TANYT&leg2=from:SYD,to:BOS,departure:18/02/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1707.30&airProductToken=AQpsCjUI1YIBEgQxOTc2GMGTASCIOCiqp4MDMMipgwM4R0AAWAFqCEVDT0JBU0lDcghHTFcwNFNCNwozCNWCARIDMTAxGIg4IJIeKPGrgwMwkLSDAzhHQAFYAWoIRUNPQkFTSUNyCEdMVzA0U0I3Cm4KNAjVggESAzg0MhiSHiCLuAEo9LiFAzCov4UDOEdAAFgBaghFQ09CQVNJQ3IIR0xYMDRTQjcKNgjVggESBDE3ODMYi7gBIMGTASivwIUDMPXChQM4R0ABWAFqCEVDT0JBU0lDcghHTFgwNFNCNxIKCAEQARgBKgJVQRgBIgQIARABKAIoAygEMAE) ![Qantas Airways](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/QF.gif) Thu, Oct 30 - Thu, Nov 13 BOS Boston SYD Sydney CA $1,756 Roundtrip found 2 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:BOS,to:SYD,departure:30/10/2025TANYT&leg2=from:SYD,to:BOS,departure:13/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1755.90&airProductToken=AQphCi8I0YwBEgQ0NDgyGMGTASCLuAEowN_7AjC24vsCOE9AAFgBagRFQ1NMcgVPSlcwVgouCNGMARIENDExMhiLuAEgkh4ouub7AjDI7fsCOE9AAVgBagRFQ1NMcgVPSlcwVgphCi4I0YwBEgQ0MTExGJIeIIu4ASjU9fwCMI38_AI4T0AAWAFqBEVDU0xyBU9KVzBWCi8I0YwBEgQzMjM1GIu4ASDBkwEomf38AjDj__wCOE9AAVgBagRFQ1NMcgVPSlcwVhIKCAEQARgBKgJRRhgBIgQIARABKAIoAygEMAE) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Sat, Jan 24 - Wed, Feb 18 BOS Boston SYD Sydney CA $1,791 Roundtrip found 16 hours ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:BOS,to:SYD,departure:24/01/2026TANYT&leg2=from:SYD,to:BOS,departure:18/02/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1790.70&airProductToken=AQpuCjYIxJgBEgMzMjEYwZMBIIu4ASiGqoMDMKKtgwM4RUAAWAFqCU1BSU5CQVNJQ3IIWExXMFhQQkQKNAjEmAESAjQxGIu4ASCSHijrrYMDMOq0gwM4RUABWAFqCU1BSU5CQVNJQ3IIWExXMFhQQkQKbgo0CMSYARICNDAYkh4gi7gBKMy4hQMwlL-FAzhFQABYAWoJTUFJTkJBU0lDcghYTFgwV1BCRAo2CMSYARIDNjM5GIu4ASDBkwEom8CFAzDqwoUDOEVAAVgBaglNQUlOQkFTSUNyCFhMWDBXUEJEEgoIARABGAEqAkRMGAEiBAgBEAEoAigDKAQwAQ) ![Turkish Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/TK.gif) Mon, Nov 10 - Fri, Nov 14 BOS Boston SYD Sydney CA $2,024 Roundtrip found 3 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:BOS,to:SYD,departure:10/11/2025TANYT&leg2=from:SYD,to:BOS,departure:14/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:2023.30&airProductToken=AQpeCi0I1JYBEgI4MhjBkwEgyJwBKLzf_AIw8eP8AjhWQABYAWoCUFNyB1ZMVjNYUEMKLQjUlgESAzE3NBjInAEgkh4o1eT8AjCU7vwCOFZAAVgBagJQU3IHVkxWM1hQQwpeCi0I1JYBEgMxNzUYkh4gyJwBKMeF_QIw0Y_9AjhWQABYAWoCUFNyB1ZMVjNYUEMKLQjUlgESAjgxGMicASDBkwEo85H9AjDplv0COFZAAVgBagJQU3IHVkxWM1hQQxIKCAEQARgBKgJUSxgBIgQIARABKAIoAygEMAE) ![All Nippon Airways](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/NH.gif) Sun, Mar 8 - Tue, Mar 17 BOS Boston SYD Sydney CA $2,140 Roundtrip found 3 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:BOS,to:SYD,departure:08/03/2026TANYT&leg2=from:SYD,to:BOS,departure:17/03/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:2139.90&airProductToken=AQqhAQo1CM6QARIENzc4NxjBkwEgrhwooYqHAzDai4cDOExAAFgBaghFQ09CQVNJQ3IITExYMFdXVzMKMwjOkAESAzExMRiuHCCnGyjhjYcDMJWUhwM4TEABWAFqCEVDT0JBU0lDcghMTFgwV1dXMwozCM6QARIDODg5GKcbIJIeKMeZhwMwi56HAzhMQAFYAWoIRUNPQkFTSUNyCExMWDBXV1czCqEBCjMIzpABEgM4ODAYkh4gpxsoxe2HAzCE8ocDOFFAAFgBaghFQ09CQVNJQ3IIUUxYNTdXVzIKMwjOkAESAzExMhinGyCuHCi19IcDMID6hwM4UUABWAFqCEVDT0JBU0lDcghRTFg1N1dXMgo1CM6QARIENzc4NhiuHCDBkwEoz_yHAzDd_YcDOFFAAVgBaghFQ09CQVNJQ3IIUUxYNTdXVzISCggBEAEYASoCTkgYASIECAEQASgCKAMoBDAB) ![Air New Zealand](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/NZ.gif) Sun, Mar 8 - Tue, Mar 17 BOS Boston SYD Sydney CA $2,174 Roundtrip found 3 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:BOS,to:SYD,departure:08/03/2026TANYT&leg2=from:SYD,to:BOS,departure:17/03/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:2174.00&airProductToken=AQqIAQotCM60ARIENjQwMhjBkwEgiDgoyYmHAzDii4cDOEdAAFgBagJFQ3IGR1g4N0E1CioIzrQBEgIyORiIOCDAWii9j4cDMLeWhwM4R0ABWAFqAkVDcgZHWDg3QTUKKwjOtAESAzEwMRjAWiCSHij4locDMNmYhwM4R0ABWAFqAkVDcgZHWDg3QTUKXQosCM60ARIEOTg3MBiSHiCycSiG6YcDML_vhwM4U0AAWAFqAkVDcgZTTFhHN0EKLQjOtAESBDkwMTAYsnEgwZMBKK7zhwMwgfaHAzhTQAFYAWoCRUNyBlNMWEc3QRIKCAEQARgBKgJOWhgBIgQIARABKAIoAygEMAE) ![Hawaiian Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/HA.gif) Sun, Feb 1 - Thu, Mar 5 BOS Boston SYD Sydney CA $2,195 Roundtrip found 4 days ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:BOS,to:SYD,departure:01/02/2026TANYT&leg2=from:SYD,to:BOS,departure:05/03/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:2195.00&airProductToken=AQqRAQowCMiCARIEMjEzNRjBkwEgi7gBKLCFhAMwvIiEAzhNQABYAWoCTU5yCE1MWFVSOU1BCi4IyIIBEgM4MDEYi7gBIKdbKOSLhAMw146EAzhNQAFYAWoCTU5yCE1MWFVSOU1BCi0IyIIBEgM4NTEYp1sgkh4ojY-EAzCNlIQDOE1AAVgBagJNTnIITUxYVVI5TUEKjwEKLQjIggESAzg1MhiSHiCnWyjA5oYDMJjrhgM4S0AAWAFqAk1OcghLTEZVUlRNQQotCMiCARIDODE2GKdbIJJoKPLrhgMwsu6GAzhPQAFYAWoCTU5yCE9IWDNPRE02Ci8IyIIBEgQyMDYyGJJoIMGTASii74YDMNvxhgM4T0ABWAFqAk1OcghPSFgzT0RNNhIKCAEQARgBKgJIQRgBIgQIARABKAIoAygEMAs) ![JetBlue Airways](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/b6.gif) Wed, Feb 18 - Sun, Mar 8 BOS Boston SYD Sydney CA $2,326 Roundtrip found 1 day ago [](https://expedia.ca/Flights-Search?trip=roundtrip&leg1=from:BOS,to:SYD,departure:18/02/2026TANYT&leg2=from:SYD,to:BOS,departure:08/03/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:2325.30&airProductToken=AQpXCioIwmwSBDU1NzEYwZMBIMM7KOTEhQMwr8qFAzhPQABYAXIIT0xVU1AwUkUKKQjCbBIENjUyOBjDOyCSHiikzIUDMPbShQM4T0ABWAFyCE9MVVNQMFJFClcKKQjCbBIENjUyORiSHiDDOyigiIcDMJqPhwM4T0AAWAFyCE9MVVNQMFJFCioIwmwSBDU1NzAYwzsgwZMBKPaQhwMwr5eHAzhPQAFYAXIIT0xVU1AwUkUSCggBEAEYASoCQjYYASIECAEQASgCKAMoBDAB) ## Find the cheapest month to fly from Boston (BOS) to Sydney (SYD) ### April is typically the cheapest month to fly From CA $1,122 - CA $2,375 per traveller. ## Frequently asked questions ### How much is a flight from Logan Intl. Airport (BOS) to Kingsford Smith Intl. Airport (SYD)? > The lowest price advertised for a round-trip flight between Logan Intl. Airport and Mascot Airport is CA $1,516. But you better move fast. This figure is based on fares offered within the last 7 days on Expedia for flights departing within the next year. Prices and availability are subject to change. Additional terms apply. ### Do I need to pay a cancellation fee if I cancel my flight from Logan Intl. Airport (BOS) to Kingsford Smith Intl. Airport (SYD)? > The majority of flights can be conveniently cancelled online, but whether you are charged a fee differs between airlines. If you do need to cancel your vacation, follow the easy instructions in the [Customer Service Portal](https://www.expedia.ca/helpcenter). ### How do I find cheap flights from Logan Intl. Airport (BOS) to Kingsford Smith Intl. Airport (SYD) that have flexible change policies? > Use our "No change fees" filter to find flexible ticketing options for your flight from BOS to Kingsford Smith Intl. Airport (SYD). This allows you to snag a great price in advance and still have the freedom to make changes without any extra fees. Fare adjustments may apply if your new flight is more expensive. ### How many hours is the flight from BOS to SYD? > It takes roughly 23 hours and 27 minutes to journey from BOS to Sydney Airport. If you hope to have a snooze, bring your neck pillow, some earplugs and something to keep you warm. ### How far is the flight from Logan Intl. Airport to Kingsford Smith Intl. Airport (SYD)? > With a flight distance of 16,300 kilometres from BOS (BOS) to Sydney Airport (SYD), this is a long journey. Ensure that you keep well hydrated and take a short walk down the aisle from time to time. ### Which airlines fly direct from Logan Intl. Airport to SYD? > There are no direct flights, so you'll have to make at least one stop between BOS and Kingsford Smith Intl. Airport (SYD). Take advantage of the layover time to stretch your legs and freshen up. ### Are BOS to Sydney Airport flight tickets cheaper when they're purchased at the last minute? > Booking last minute from Logan Intl. Airport to Sydney Airport can be hit-or-miss. It is possible to find a bargain, but you could also miss out completely! If you'd rather start planning your trip early on, Expedia compares flight deals up to 12 months in advance. Just bear in mind that not all airlines publish their prices that far in advance. Our top tip? Check back often as updates are made frequently. ## Travel information | Origin airport | Logan Intl. | | --- | --- | | Destination airport | Kingsford Smith Intl. | | Airlines serving | Air Canada, Air New Zealand, All Nippon Airways, American Airlines, British Airways, Cathay Pacific, Delta, Emirates, Etihad Airways, Hawaiian Airlines, Japan Airlines, JetBlue Airways, Korean Air, Qantas Airways, Qatar Airways, Swiss International Air Lines, Turkish Airlines, United | | Roundtrip price | CA $1,516 | | Distance | 16155 km | ## Book with confidence ### Boston to Sydney Flights **The easy way to book your flights from Boston to Sydney**  With Expedia, it’s simple to find and book flights to Sydney from Boston whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from 20 airlines that cover this route. There are nonstop flights to Kingsford Smith Intl., too.   Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from Boston to Sydney today, tomorrow, or this week.   **Save dollars with cheap flights from Logan Intl., BOS to Kingsford Smith Intl., SYD**  Sort your search results by price to find great deals on your flight from Boston to Sydney—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to Sydney from Boston currently is just CA $1,516 rising to CA $2,326.   Here are more money-saving tips:  - Fly in March when flight prices are normally at their lowest  - Book about a month to 6 weeks before you travel for the best prices to Sydney   - Avoid peak season and weekends when flights can cost more - Early morning and late-night flights are sometimes cheaper, so try varying your travel times  - One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free!  **Reasons to choose Expedia for your flight to Sydney from Boston**  Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. 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[Visit Marrickville](https://www.expedia.ca/Sydney-Marrickville.dx178125) - [Visit Mascot](https://www.expedia.ca/Sydney-Mascot.dx178124) - [Visit Wolli Creek](https://www.expedia.ca/Sydney-Wolli-Creek.dx6132064) - [Car rentals near Mascot](https://www.expedia.ca/Car-Rentals-In-Mascot.d178124.Car-Rental-Guide) \*Available to Expedia members.