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.Low-cost carrier Norwegian Air is currently offering great deals from cities across the US to both London (LGW) and Paris (CDG). We’re seeing round-trips from the East Coast for as little as $281 from Boston (BOS) to London. These deals might not hang around for too long, so book now to ensure your seat.Norwegian’s economy product is fairly comfy on the 787.The cheapest flights appear to be from January through March 2018, but depending on your point of origin, there are deals to be had on specific dates in the second week of December this year. And as is often the case with Norwegian Air, the best deals come by booking tickets separately through Google Flights’ separate tickets feature. In this case, you will want to book in British Pounds to lock in those great fares.Airlines: NorwegianRoutes: BOS/JFK/OAK/LAX to LGW/CDGCost: $281+ round-tripDates: January - March 2018Booking Link: NorwegianPay 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)Here are a few examples of what you can book:Boston (BOS) to London-Gatwick (LGW) for $281 round-trip:New York (JFK) to Paris (CDG) for $330 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.New York (JFK) to London-Gatwick (LGW) for $344 round-trip:Oakland (OAK) to London-Gatwick (LGW) for $371 round-trip:Los Angeles (LAX) to Paris (CDG) for $378 round-trip:Los Angeles (LAX) to London-Gatwick (LGW) for $380 round-trip: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!