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 you use Google Flights to find dates to fly, then book through an online travel agency such as Orbitz or Expedia, which allows you to cancel flights without penalty by 11pm Eastern Time within one day of booking. However, if you’re using The Platinum Card® from American Express, you’ll need to book directly with the airline or through the Amex Travel portal to get 5x MR points. Remember: Fares may disappear quickly, so book right away and take advantage of Orbitz or Expedia’s courtesy cancellation if you’re unable to get the time away from work or family.United is offering some appealing fares for travel across the country. We’re seeing round-trip fares between a couple of cities and Seattle (SEA) from $132 round-trip. The best part is that each of the United deals (Charlotte [CLT] and Miami [MIA]) are in regular economy, so you’ll get the usual flying amenities, as well as earning elite qualifying credits. Also note that these fares are valid in both directions of travel. We’re also seeing some cheap fares with Delta between SEA and Raleigh (RDU) and Boston (BOD), which are in basic economy.To search for availability, head to Google Flights and input your origin and destination cities. Then, scroll through the calendar view and select dates that work best for you. Finally, click through to book directly with the airline or with an online booking agency like Orbitz or Expedia.Airlines: Delta/UnitedRoutes: BOS/CLT/MIA/RDU to/from SEACost: $132+ round-trip in economyDates: August – December 2018Booking Link: Orbitz, Expedia or directly with the airlinePay With: The Platinum Card® from American Express (5x on airfare), Chase Sapphire Reserve, Citi Prestige (5x on airfare plus excellent trip delay insurance) or Chase Sapphire Preferred Card (2x on travel)Here are a few examples of what you can book:Seattle (SEA) to Charlotte (CLT) for $132 round-trip:Charlotte (CLT) to Seattle (SEA) for $132 round-trip: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.Miami (MIA) to Seattle (SEA) for $136 round-trip:Seattle (SEA) to Miami (MIA) for $136 round-trip:Raleigh (RDU) to Seattle (SEA) for $166 round-trip in basic economy ($196 in regular economy):Boston (BOS) to Seattle (SEA) for $220 round-trip in basic economy ($250 in regular economy):Maximize Your PurchaseDon’t forget to use a credit card that earns additional points on airfare purchases, such as The Platinum Card® from American Express (5x on flights booked directly with airlines or American Express Travel), Chase Sapphire Reserve, or Citi Prestige (5x 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: Secret FlyingFeatured image by Zuraimi / Getty Images.