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 American Express Platinum Card, 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.If you’ve been thinking about taking a trip to Paris, now’s the time to book. British Airways and OpenSkies are having a fare sale on flights from New York to Paris, made even more appealing by two stackable discounts. Flight are available at scattered times throughout the year, but it might take some clicking around to see which dates are eligible for the discounted fares.Here are the two stackable discounts you can take advantage of in order to get the lowest possible fare:BA’s AARP discount allows you to save $65 off economy fares. To search for these fares, go directly to the BA AARP page.If you fly with BA or OpenSkies (not AA) and fly in and out of the same airport, you can save an additional 10% by using the promo code CARDOFFERU. After you’ve selected your flights, click the “Promotion code or eVoucher” button on the next page and enter the code.By stacking these two discounts, you can book a round-trip flight to Paris for less than $300 — including some flights during the summer. Note that these flights must include a Saturday stay in order to be eligible. Also note that the above steps are only required for flights that are part of the BA/OpenSkies sale between New York and Paris.The other routes included in this deal can be searched through Google Flights. They vary in date, but tend to fall during the latter part of the year, with scattered dates from August through December. We found fares to Europe from Boston (BOS), New York (JFK), Seattle (SEA) and Miami (MIA) for as little as $372 round-trip.Airlines: American Airlines, British Airways, Finnair, Iberia, OpenSkiesRoutes: BOS, JFK, MIA, SEA to AMS, FCO, MXP, ORYCost: $297+ round-trip in economyDates: March 2017 - January 2018Booking Link: BA’s AARP page or Google FlightsPay With: The Platinum Card from American Express (5x on airfare), Chase Sapphire Reserve, Citi Prestige (3x on airfare) or Chase Sapphire Preferred (2x on travel)There are tons of options, but here are just a few examples of what you can book: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.New York (JFK) to Paris (ORY) nonstop for $297 round-trip with OpenSkies in August:New York (JFK) to Paris (ORY) nonstop for $297 round-trip with OpenSkies in October:Boston (BOS) to Amsterdam (AMS) with one stop for $397 round-trip with Iberia in September:Miami (MIA) to Rome (FCO) with one stop for $387 round-trip with AA and Finnair in September:New York (JFK) to Milan (MXP) nonstop for $372 round-trip in October with AA:New York (JFK) to Rome (FCO) with one stop on the return for $384 round-trip with AA and Finnair in October:Seattle (SEA) to Amsterdam (AMS) with one stop for $412 round-trip with BA and AA in September: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 (3x on airfare) or the Chase Sapphire Preferred (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: Dan’s Deals