Update: Some offers mentioned below are no longer available. View the current offers here.Airfare deals are typically only available on limited dates. We recommend that you use Google Flights to find dates to fly, then book through an online travel agency, such as Orbitz, which allows you to cancel flights without penalty by 11pm Eastern Time within one day of booking. Remember: Fares may disappear quickly, so book right away and take advantage of Orbitz’s courtesy cancellation if you’re unable to travel. Additionally, keep in mind that discounted partner fares may not earn miles with US-based carriers.After this week’s $225 New Zealand fares, $676 round-trip hardly sounds like a bargain — but it absolutely is. Virgin Australia is currently offering discounted flights from New York to Sydney, with a mix of Delta and VA segments. The best availability is in August and September — while you can find available dates using Google Flights, you’ll need to book your flights through an OTA like Orbitz. Also note that these fares require a 10-day minimum stay.Airlines: Delta, Virgin AustraliaRoutes: JFK to SYDCost: $676+ round-trip in economyDates: August 2016 through September 2016Booking Link: OrbitzPay With: American Express Premier Rewards Gold, Citi Prestige or Chase Sapphire Preferred CardSearch for your flight here:Here are a few examples of what you can book:New York (JFK) to Sydney (SYD) for $676 on Delta/Virgin America in September:New York (JFK) to Sydney (SYD) for $676 on Delta/Virgin America in September.New York (JFK) to Sydney (SYD) for $680 on Delta/Virgin America in August:New York (JFK) to Sydney (SYD) for $680 on Delta/Virgin America in August.Maximize Your PurchaseSign up for our daily newsletterEmail addressSign upI would like to subscribe to The Points Guy newsletters and special email promotions. The Points Guy will not share or sell your email. See privacy policy.Don’t forget to use a credit card that earns additional points on airfare purchases, such as the American Express Premier Rewards Gold or Citi Prestige (3x on airfare) or the Chase Sapphire Preferred Card (2x on all travel purchases). Check out this post for more on maximizing airfare purchases.H/T: The Flight DealIf you’re able to score one of these tickets, please share the good news in the comments below!