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.Southwest just announced another major sale, with fares starting at $36 one-way for both domestic and international flights if you purchase before September 29. The sale is valid for departures from October 2016 through March 2017 with some restrictions in December and January. Since Southwest uses a fare-based award redemption system, reward tickets are also heavily discounted and could be a great use of Rapid Rewards points.You’ll have to search on Southwest’s website to find your ideal flight, as the airline doesn’t allow travel search engines access to their flight schedule. If you have the Southwest Companion Pass, (now much easier to get thanks to the merger of Starwood and Marriott) this sale would be a great way to travel with a companion for next to nothing.Airline: SouthwestRoute: US and international routesCost: $36+ one-way in economyDates: October 2016 - March 2017Booking Link: SouthwestPay With: Chase Sapphire Reserve, Premier Rewards Gold Card from American Express, Citi Prestige Card or Chase Sapphire PreferredHere are a few examples of what you can book:Dallas (DAL) to New Orleans (MSY) for $36 one-way in November:Dallas (DAL) to New Orleans (MSY) for $36 one-way.Dallas (DAL) to New Orleans (MSY) for 1,465 points + $5.60 one-way in November:Dallas (DAL) to New Orleans (MSY) for 1,465 points + $5.60 one-way.Dallas (DAL) to New Orleans (MSY) for $82 round-trip or 3,031 points + $5.60 in November: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.Dallas (DAL) to New Orleans (MSY) for $82 round-trip.Los Angeles (LAX) to Las Vegas (LAS) for $39 or 1,666 points + $5.60 one-way in December:Los Angeles (LAX) to Las Vegas (LAS) for $39 one-way.New York (LGA) to Chicago (MDW) for $50 or 2,403 points + $5.60 one-way in October:New York (LGA) to Chicago (MDW) for $50 one-way.Chicago (MDW) to Minneapolis (MSP) for $36 or 1,465 points + $5.60 one-way in October:Chicago (MDW) to Minneapolis (MSP) for $36 one-way.Maximize Your PurchaseDon’t forget to use a credit card that earns additional points on airfare purchases, such as the Chase Sapphire Reserve, Premier Rewards Gold Card from American Express 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!