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 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.Several carriers are again offering low fares from several East Coast cities to Spain, with prices starting from just $376 round-trip. You can fly from Boston (BOS) New York (JFK), Miami (MIA) to Barcelona (BCN) and Madrid (MAD) with departures available from late September through January 2018. Flights are available almost every day of the week, even on holidays, so you could book a Thanksgiving or Christmas trip.While the cheapest fares we’re seeing are mainly on Oneworld carries like American and Iberia, Air Canada (Star Alliance) and Delta (SkyTeam) flights are also available on some routes.Airlines: American, Air Canada, Delta, IberiaRoute: BOS/JFK/MIA to BCN/MADCost: $376+ round-trip in economyDates: September - January 2018Booking Link: Orbitz or ExpediaPay With: The Platinum Card from American Express (5x on airfare), Chase Sapphire Reserve, Citi Prestige Card (5x on airfare) or Chase Sapphire Preferred Card (2x on travel)Here are a few examples of what you can book:New York (JFK) to Barcelona (BCN) for $376 round-trip in November:Boston (BOS) to Madrid (MAD) for $381 round-trip 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.Boston (BOS) to Barcelona (BCN) for $391 round-trip in November:Miami (MIA) to Barcelona (BCN) for $392 round-trip in November:Miami (MIA) to Madrid (MAD) for $397 round-trip in November:Maximize Your PurchaseDon’t forget to use a credit card that earns additional points on airfare purchases, such as the American Express Platinum Card (5x on flights booked directly with airlines or American Express Travel), Chase Sapphire Reserve, or Citi Prestige Card (5x on airfare) or the Chase Sapphire Preferred (2x on all travel purchases). Check out this post for more on maximizing airfare purchases.Featured image of Barcelona courtesy of Getty Images.If you’re able to score one of these tickets, please share the good news in the comments below!H/T: The Flight Deal