Title: £380 Cheap Flights from San Diego to Sydney (SAN to SYD) - Expedia.co.uk ![](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) # £380 Cheap Flights from San Diego (SAN) to Sydney (SYD) [View £380 flight on Mon, 1 Dec 2025](https://expedia.co.uk/Flights-Search?trip=oneway&leg1=from:SAN,to:SYD,departure:01/12/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:379.60&airProductToken=AQpYCisIwYYBEgQ4NzY3GJJoILiNASiizP4CMOzN_gI4S0AAWAFyCEtMVlAwMEJBCikIwYYBEgIzNxi4jQEgkh4otdj-AjDr3_4COEtAAVgBcghLTFZQMDBCQRIKCAIQARgBKgJBQxgBIgQIARABKAIoAygEMAE) - [Return](?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 San Diego Intl. Airport (SAN) to Sydney Airport (SYD) - ![Air Canada](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AC.svg) Air Canada [](https://www.expedia.co.uk/Flights-Search?leg1=from:san,to:syd,departure:15/11/2025TANYT&leg2=from:syd,to:san,departure:22/11/2025TANYT&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.co.uk/Flights-Search?leg1=from:san,to:syd,departure:15/11/2025TANYT&leg2=from:syd,to:san,departure:22/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"NZ"}}]) - ![Alaska Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AS.svg) Alaska Airlines [](https://www.expedia.co.uk/Flights-Search?leg1=from:san,to:syd,departure:15/11/2025TANYT&leg2=from:syd,to:san,departure:22/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AS"}}]) - ![United](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_UA.svg) United [](https://www.expedia.co.uk/Flights-Search?leg1=from:san,to:syd,departure:15/11/2025TANYT&leg2=from:syd,to:san,departure:22/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"UA"}}]) - ![Delta](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_DL.svg) Delta [](https://www.expedia.co.uk/Flights-Search?leg1=from:san,to:syd,departure:15/11/2025TANYT&leg2=from:syd,to:san,departure:22/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"DL"}}]) - ![British Airways](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_BA.svg) British Airways [](https://www.expedia.co.uk/Flights-Search?leg1=from:san,to:syd,departure:15/11/2025TANYT&leg2=from:syd,to:san,departure:22/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"BA"}}]) - ![American Airlines](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AA.svg) American Airlines [](https://www.expedia.co.uk/Flights-Search?leg1=from:san,to:syd,departure:15/11/2025TANYT&leg2=from:syd,to:san,departure:22/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AA"}}]) - ![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 25% 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.co.uk/login) ## Cheap Flights from San Diego (SAN) to Sydney (SYD) Prices were available within the past 7 days and start at £380 for one-way flights and £668 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Return ![Air Canada](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AC.gif) Tue, 25 Aug - Tue, 1 Sept SAN San Diego SYD Sydney £668 Return found 1 day ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:SAN,to:SYD,departure:25/08/2026TANYT&leg2=from:SYD,to:SAN,departure:01/09/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:668.00&airProductToken=AQqQAQorCMGGARIEODc2NxiSaCC4jQEogIeWAzC8iJYDOEtAAFgBcghLTFhQMDBCQQopCMGGARICMzUYuI0BIKEjKPyJlgMw8ZCWAzhLQAFYAXIIS0xYUDAwQkEKNgjBhgESBDI3MTYYoSMgkh4opZKWAzCEk5YDOEtAAVgBcghLTFhQMDBCQXoKCNaCARIEMjcxNgqQAQo2CMGGARIEMjcyMRiSHiChIyiMyZYDMObJlgM4S0AAWAFyCEtMWFAwMEJBegoI1oIBEgQyNzIxCikIwYYBEgIzNhihIyC4jQEowMqWAzDv0JYDOEtAAVgBcghLTFhQMDBCQQorCMGGARIEODc2Nhi4jQEgkmgo-tOWAzCx1ZYDOEtAAVgBcghLTFhQMDBCQRIKCAIQARgBKgJBQxgBIgQIARABKAIoAygEMAE) ![Air Canada](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AC.gif) Tue, 25 Aug - Tue, 1 Sept SAN San Diego SYD Sydney £694 Return found 1 day ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:SAN,to:SYD,departure:25/08/2026TANYT&leg2=from:SYD,to:SAN,departure:01/09/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:693.20&airProductToken=AQqDAQorCMGGARIEODc2NxiSaCC4jQEogIeWAzC8iJYDOEtAAFgBcghLTFhQMDBCQQopCMGGARICMzUYuI0BIKEjKPyJlgMw8ZCWAzhLQAFYAXIIS0xYUDAwQkEKKQjWggESAzkzOBihIyCSHiilkpYDMISTlgM4U0ABWAFyCEtMWFAwMEJBCoMBCikIyqIBEgM4MTAYkh4goSMo0MiWAzCqyZYDOElAAFgBcghLTFhQMDBCQQopCMGGARICMzYYoSMguI0BKMDKlgMw79CWAzhLQAFYAXIIS0xYUDAwQkEKKwjBhgESBDg3NjQYuI0BIJJoKPvRlgMwttOWAzhLQAFYAXIIS0xYUDAwQkESCggBEAEYASoCQUMYASIECAEQASgCKAMoBDAB) ![Air Canada](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AC.gif) Tue, 25 Aug - Tue, 1 Sept SAN San Diego SYD Sydney £697 Return found 1 day ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:SAN,to:SYD,departure:25/08/2026TANYT&leg2=from:SYD,to:SAN,departure:01/09/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:696.70&airProductToken=AQqQAQorCMGGARIEODc2NxiSaCC4jQEogIeWAzC8iJYDOEtAAFgBcghLTFhQMDBCQQopCMGGARICMzUYuI0BIKEjKPyJlgMw8ZCWAzhLQAFYAXIIS0xYUDAwQkEKNgjBhgESBDI3MTYYoSMgkh4opZKWAzCEk5YDOEtAAVgBcghLTFhQMDBCQXoKCNaCARIEMjcxNgqDAQopCMqiARIDODEwGJIeIKEjKNDIlgMwqsmWAzhJQABYAXIIS0xYUDAwQkEKKQjBhgESAjM2GKEjILiNASjAypYDMO_QlgM4S0ABWAFyCEtMWFAwMEJBCisIwYYBEgQ4NzY0GLiNASCSaCj70ZYDMLbTlgM4S0ABWAFyCEtMWFAwMEJBEgoIARABGAEqAkFDGAEiBAgBEAEoAigDKAQwAQ) ![Air Canada](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AC.gif) Tue, 25 Aug - Tue, 1 Sept SAN San Diego SYD Sydney £698 Return found 1 day ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:SAN,to:SYD,departure:25/08/2026TANYT&leg2=from:SYD,to:SAN,departure:01/09/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:697.50&airProductToken=AQqDAQorCMGGARIEODc2NxiSaCC4jQEogIeWAzC8iJYDOEtAAFgBcghLTFhQMDBCQQopCMGGARICMzUYuI0BIKEjKPyJlgMw8ZCWAzhLQAFYAXIIS0xYUDAwQkEKKQjWggESAzkzMhihIyCSHijpkZYDMMiSlgM4U0ABWAFyCEtMWFAwMEJBCpABCjYIwYYBEgQyNzIxGJIeIKEjKIzJlgMw5smWAzhLQABYAXIIS0xYUDAwQkF6CgjWggESBDI3MjEKKQjBhgESAjM2GKEjILiNASjAypYDMO_QlgM4S0ABWAFyCEtMWFAwMEJBCisIwYYBEgQ4NzY0GLiNASCSaCj70ZYDMLbTlgM4S0ABWAFyCEtMWFAwMEJBEgoIARABGAEqAkFDGAEiBAgBEAEoAigDKAQwAQ) ![Air Canada](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AC.gif) Tue, 25 Aug - Tue, 1 Sept SAN San Diego SYD Sydney £701 Return found 1 day ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:SAN,to:SYD,departure:25/08/2026TANYT&leg2=from:SYD,to:SAN,departure:01/09/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:701.00&airProductToken=AQqQAQorCMGGARIEODc2NxiSaCC4jQEogIeWAzC8iJYDOEtAAFgBcghLTFhQMDBCQQopCMGGARICMzUYuI0BIKEjKPyJlgMw8ZCWAzhLQAFYAXIIS0xYUDAwQkEKNgjBhgESBDI3MTYYoSMgkh4opZKWAzCEk5YDOEtAAVgBcghLTFhQMDBCQXoKCNaCARIEMjcxNgqDAQopCNaCARIDOTA5GJIeIKEjKIzJlgMw5smWAzhTQABYAXIIS0xYUDAwQkEKKQjBhgESAjM2GKEjILiNASjAypYDMO_QlgM4S0ABWAFyCEtMWFAwMEJBCisIwYYBEgQ4NzY0GLiNASCSaCj70ZYDMLbTlgM4S0ABWAFyCEtMWFAwMEJBEgoIARABGAEqAkFDGAEiBAgBEAEoAigDKAQwAQ) ![Air Canada](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AC.gif) Tue, 25 Aug - Tue, 1 Sept SAN San Diego SYD Sydney £703 Return found 1 day ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:SAN,to:SYD,departure:25/08/2026TANYT&leg2=from:SYD,to:SAN,departure:01/09/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:702.80&airProductToken=AQqDAQorCMGGARIEODc2NRiSaCC4jQEogYWWAzC9hpYDOEtAAFgBcghLTFhQMDBCQQopCMGGARICMzUYuI0BIKEjKPyJlgMw8ZCWAzhLQAFYAXIIS0xYUDAwQkEKKQjRjAESAzUxNRihIyCSHij4kZYDMNeSlgM4TkABWAFyCEtMWFAwMEJBCoMBCikIyqIBEgM4MTAYkh4goSMo0MiWAzCqyZYDOElAAFgBcghLTFhQMDBCQQopCMGGARICMzYYoSMguI0BKMDKlgMw79CWAzhLQAFYAXIIS0xYUDAwQkEKKwjBhgESBDg3NjQYuI0BIJJoKPvRlgMwttOWAzhLQAFYAXIIS0xYUDAwQkESCggBEAEYASoCQUMYASIECAEQASgCKAMoBDAB) ![Alaska Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/AS.gif) Thu, 13 Nov - Fri, 21 Nov SAN San Diego SYD Sydney £750 Return found 5 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:SAN,to:SYD,departure:13/11/2025TANYT&leg2=from:SYD,to:SAN,departure:21/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:750.00&airProductToken=AQpYCioIwaYBEgQ4MTI3GJJoIKdbKMmB_QIwuIT9AjhRQABYAXIIUUxGVVJUTUEKKgjBpgESBDg0NTEYp1sgkh4og4v9AjCNkP0COFFAAVgBcghRTEZVUlRNQQpYCioIwaYBEgQ4NDUyGJIeIKdbKMDU_QIwk9n9AjhRQABYAXIIUUxGVVJUTUEKKgjBpgESBDgxMzAYp1sgkmgonNr9AjDa3P0COFFAAVgBcghRTEZVUlRNQRIKCAEQARgBKgJBUxgBIgQIARABKAIoAygEMAE) ![Hawaiian Airlines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/HA.gif) Thu, 13 Nov - Fri, 21 Nov SAN San Diego SYD Sydney £762 Return found 5 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:SAN,to:SYD,departure:13/11/2025TANYT&leg2=from:SYD,to:SAN,departure:21/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:761.50&airProductToken=AQqCAQoqCMiCARIENjU0MxiSaCCycSjHg_0CMLKE_QI4WkAAWAFyCFpINE9BVk1OCikIyIIBEgM4MTEYsnEgp1so_Yf9AjDRiv0COExAAVgBcghMTEZVUlRNQQopCMiCARIDODUxGKdbIJIeKIOL_QIwjZD9AjhMQAFYAXIITExGVVJUTUEKVgopCMiCARIDODUyGJIeIKdbKMDU_QIwk9n9AjhMQABYAXIITExGVVJUTUEKKQjIggESAzgxNhinWyCSaCic2v0CMNrc_QI4TEABWAFyCExMRlVSVE1BEgoIARABGAEqAkhBGAEiBAgBEAEoAigDKAQwAQ) ![Air New Zealand](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/NZ.gif) Tue, 25 Aug - Tue, 1 Sept SAN San Diego SYD Sydney £945 Return found 1 day ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:SAN,to:SYD,departure:25/08/2026TANYT&leg2=from:SYD,to:SAN,departure:01/09/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:944.50&airProductToken=AQqGAQo0CM60ARIEOTU4MxiSaCCycSiPh5YDMPmHlgM4R0AAWAFyBkdYODdBNXoKCNWCARIEOTU4MwolCM60ARIBNxiycSDAWiixiZYDMLiPlgM4R0ABWAFyBkdYODdBNQonCM60ARIDMTAxGMBaIJIeKPSPlgMw1ZGWAzhHQAFYAXIGR1g4N0E1CogBCicIzrQBEgMxMDQYkh4gwFoorsuWAzDizJYDOEdAAFgBcgZHWDg3QTUKJgjOtAESATYYwFogi7gBKK_OlgMwhNSWAzhHQAFYAXIGR1g4N0E1CjUIzrQBEgQ2OTQ5GIu4ASCSaCi52JYDMPTYlgM4R0ABWAFyBkdYODdBNXoKCM-eARIENjk0ORIKCAEQARgBKgJOWhgBIgQIARABKAIoAygEMAE) ![Delta](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/DL.gif) Thu, 13 Nov - Fri, 21 Nov SAN San Diego SYD Sydney £1,003 Return found 5 days ago [](https://expedia.co.uk/Flights-Search?trip=roundtrip&leg1=from:SAN,to:SYD,departure:13/11/2025TANYT&leg2=from:SYD,to:SAN,departure:21/11/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1002.50&airProductToken=AQqEAQoqCMSYARIEMTExNxiSaCDyEiiX_PwCMJz9_AI4RUAAWAFyCFhMVzBXUEJECisIxJgBEgQxMTYxGPISIIu4ASjvgP0CMOuB_QI4RUABWAFyCFhMVzBXUEJECikIxJgBEgI0MRiLuAEgkh4o3IP9AjDqiv0COEVAAVgBcghYTFcwV1BCRAqEAQopCMSYARICNDAYkh4gi7gBKKzP_QIw9NX9AjhFQABYAXIIWExXMFdQQkQKKwjEmAESBDEzMTgYi7gBIPISKNPW_QIwydf9AjhFQAFYAXIIWExXMFdQQkQKKgjEmAESBDEyOTYY8hIgkmgo_Nf9AjDx2P0COEVAAVgBcghYTFcwV1BCRBIKCAEQARgBKgJETBgBIgQIARABKAIoAygEMAE) ## Find the cheapest month to fly from San Diego (SAN) to Sydney (SYD) ### August is typically the cheapest month to fly From £590 - £952 per traveller. ## Frequently asked questions ### How much is a flight from San Diego Intl. Airport (SAN) to Kingsford Smith Intl. Airport (SYD)? > Within the past 7 days on Expedia, for flights departing within the next year, the lowest price advertised for a round-trip flight from SAN to Sydney Airport was £668. Great fares don't wait forever, so make sure you book yours today. Prices and availability are subject to change. Additional terms apply. ### Do I need to pay a cancellation fee if I cancel my flight from SAN to Mascot Airport? > The majority of flights can be cancelled online, but whether you are charged a fee varies between airlines. If you do need to cancel your escape, follow the instructions in the [Customer Service Portal](https://www.expedia.co.uk/service/?langid=1033). ### How do I find cheap flights from San Diego Intl. Airport (SAN) to Kingsford Smith Intl. Airport (SYD) that have flexible change policies? > Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for San Diego Intl. Airport (SAN) to Mascot Airport flights, you'll see a "no change fees" filter for you to select. ### How far is the flight from San Diego Intl. Airport (SAN) to Kingsford Smith Intl. Airport (SYD)? > San Diego to Sydney is around 12,100 kilometres, so be prepared to spend a while in the air. Don't forget to pack all the essentials, from your hoodie to your headphones. Toss in a couple of snacks to nibble on throughout your trip too. ### Which airlines fly direct from San Diego Intl. Airport (SAN) to SYD? > There are no direct flights, so you'll have to make at least one stop between San Diego Airport and Mascot Airport. Take advantage of the layover time to stretch your legs and enjoy some personal space. ### Are SAN to Mascot Airport flight tickets cheaper when they're purchased at the last minute? > Last-minute bookings from San Diego Airport to Kingsford Smith Intl. Airport (SYD) can be hit-or-miss. You may be able to find a bargain, but you could also completely miss out! If you'd prefer to play it safe and start planning your trip ahead of time, Expedia compares flight deals up to a year in advance. Just keep in mind that not all airlines list their prices that far in advance. Our advice? Check back often as prices are updated regularly. ## Travel information | Origin airport | San Diego Intl. | | --- | --- | | Destination airport | Kingsford Smith Intl. | | Airlines serving | Air Canada, Air New Zealand, Alaska Airlines, British Airways, Fiji Airways, Hawaiian Airlines, Qantas Airways | | Return price | £668 | | Distance | 12024 km | ## Book with confidence ### Compare flights from San Diego to Sydney easily and book with confidence For travelling on business or for pleasure, Expedia makes it easy to book your flights from San Diego to Sydney. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Kingsford Smith Intl. in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from San Diego Intl. to Kingsford Smith Intl..   To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights.  Grab a great deal on your flight from San Diego Intl. (SAN) to Kingsford Smith Intl. (SYD) The easiest way to view the best deals on flights from San Diego to Sydney today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from San Diego Intl. to Kingsford Smith Intl. start at just £668 and range up to £1,003.   To find an even better deal, try   - being flexible on your dates – midweek flights can be cheaper - looking for other airports near San Diego and Sydney - booking your flight during August, the cheapest month on this route - varying your flight times – early morning and late at night are sometimes cheaper  Why you should book your San Diego to Sydney flight with Expedia! We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from San Diego Intl. to Kingsford Smith Intl. for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.   Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. 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