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 searching for your inner viking, now’s the time to book a trip to Scandinavia. We’re seeing some stellar round-trip fares from the US to Copenhagen (CPH) and Stockholm (ARN) on a variety of carriers. The cheapest flights depart from East Coast cities like Boston (BOS) and New York (JFK), though there are some cheap fares from Los Angeles (LAX) as well. The best part of these fares is that they’re on full-service airlines — you won’t have to dish out extra cash to bring your checked bags with you.The cheap fares are available generally from September 2017 through March 2018, though the cheapest ones are found mostly from November through December 2017. As always, use Google Flights to find the dates that work best for you, and then complete booking through the airlines or through an OTA like Expedia or Orbitz.Airlines: Air Canada, Edelweiss, Finnair, Lufthansa, SAS, SwissRoutes: BOS/JFK/LAX to CPH/ARNCost: $361+ round-tripDates: September 2017 - March 2018Booking Link: Orbitz or ExpediaPay 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 Copenhagen (CPH) for $361 round-trip on Air Canada, Edelweiss and Swiss:Boston (BOS) to Copenhagen (CPH) for $375 round-trip on Swiss: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.Los Angeles (LAX) to Stockholm (ARN) for $399 round-trip on SAS and Swiss:Boston (BOS) to Stockholm (ARN) for $400 round-trip on Lufthansa and Swiss:New York (JFK) to Copenhagen (CPH) for $405 round-trip on Finnair: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!