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.United is currently offering discounted fares on flights from several US cities to Singapore (SIN) for departures from August through December. We’re seeing fares as low as $668 round-trip from Chicago O’Hare (ORD) in September. The flights will be routed through San Francisco (SFO), so you’ll have the chance to fly on United’s new route on the airline’s 787-9 Dreamliner launching June 1, which comes equipped with on-demand in-flight entertainment in all cabins as well as satellite Wi-Fi. Search for your flights on Google Flights and then continue to United’s site to complete your booking.Airline: UnitedRoute: US cities to Singapore (SIN)Cost: $668+ round-trip in economyDates: August 2016 through December 2016Fare Class: K, LMiles Earned: At least 16,888 elite-qualifying milesBooking Link: OrbitzPay With: American Express Premier Rewards Gold, Citi Prestige or Chase Sapphire PreferredHere are some examples of what you can book:Chicago (ORD) to Singapore (SIN) for $668 round-trip on United (earns 20,580 PQMs):Chicago (ORD) to Singapore (SIN) for $668 round-trip on United.Newark (EWR) to Singapore (SIN) for $754 round-trip on United (earns 22,018 PQMs):Newark (EWR) to Singapore (SIN) for $754 round-trip on United.Los Angeles (LAX) to Singapore (SIN) for $784 round-trip on United (earns 17,562 PQMs):Los Angeles (LAX) to Singapore (SIN) for $784 round-trip on United.San Francisco (SFO) to Singapore (SIN) for $798 round-trip on United (earns 16,888 PQMs):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.San Francisco (SFO) to Singapore (SIN) for $798 round-trip on United.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