Update: Some offers mentioned below are no longer available. View the current offers here.Want to see the latest flight deals as soon as they’re published? Follow The Points Guy on Facebook and Twitter, and subscribe to text message alerts from our deals feed, @tpg_alerts.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.If you’ve been wanting to take a trip Down Under, now is the time to book! We’re seeing fares from $749 round-trip from many US cities including Seattle (SEA), San Francisco (SFO), Newark (EWR), Chicago (ORD) and Denver (DEN), valid for departures from August through December 2016. Delta and United are going head to head, already cutting prices on fares to Asia, and now Sydney (SYD) and Melbourne (MEL). This is a very extensive fare sale, with availability from all Delta and United hubs around the $800 mark. We recommend using Google Flights to find your desired itinerary, and then continue to the airlines’ websites to complete booking.Airline: Delta, United, and Virgin AustraliaRoute: US Cities to Australia Cost: $749+ round-trip in economyDates: August - December 2016Booking Link: OrbitzPay With: American Express Premier Rewards Gold, Citi Prestige or Chase Sapphire PreferredHere are some examples of what you can book:Newark (EWR) to Sydney (SYD) for $790 round-trip in December on Virgin Australia:Newark (EWR) to Sydney (SYD) for $790 round-trip on Virgin Australia.Denver (DEN) to Sydney (SYD) for $749 round-trip in October on Delta:Denver (DEN) to Sydney (SYD) for $749 round-trip on Delta.Seattle (SEA) to Sydney (SYD) for $828 round-trip in October on United:Sign 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.Seattle (SEA) to Sydney (SYD) for $828 round-trip on United.San Francisco (SFO) to Sydney (SYD) for $828 round-trip in October on Delta:San Francisco (SFO) to Sydney (SYD) for $828 round-trip on Delta.Chicago(ORD) to Sydney (SYD) for $762 round-trip in November on Virgin Australia:Chicago(ORD) to Sydney (SYD) for $762 round-trip on Virgin Australia.Maximize Your PurchaseDon’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.If you’re able to score one of these tickets, please share the good news in the comments below!H/T: The Flight Deal