Act fast for great deals on flights to many of the top cities in Europe for less than $400 round-trip.This is a wide-ranging sale on flights to Europe with availability on American Airlines, Delta Air Lines, JetBlue, Tap Air Portugal, SAS, United Airlines and others.The best deal I found was for $358 from Newark (EWR) to Paris (ORY).A sunset over the River Seine in Paris, France. (Photo by Sylvain Sonnet/Getty)It’s easy to find deals, though, including a bargain for $392 from Boston to Barcelona or for $387 on SAS from Los Angeles (LAX) to Stockholm (ARN).Do some digging, because flights to almost every city in Europe are on sale.The deal was originally sent out by Thrifty Traveler to its Premium members, who are notified about cheap flights, award flight sales and business-class deals by email for $7.99 monthly or $49.99 annually.For more TPG news delivered each morning to your inbox, sign up for our daily newsletter.Deal basicsAirlines: American Airlines, Delta Air Lines, JetBlue Airways, Tap Air Portugal, SAS, United Airlines and more.Routes: BWI, BOS, EWR, JFK, LAX, MIA, ORD and others to AMS, BCN, BER, BRU, DUB, ECI, FRA, HEL, LHR and beyond.Cost: As low as $358 round-trip.Dates: January to May and August through November 2022.Pay with: The Platinum Card® from American Express for 5x on airfare booked directly with the airline or through Amex Travel (on up to $500,000 on these purchases per calendar year), the Citi Prestige® Card for 5x on airfare, the Citi Premier® Card (3x on air travel), Chase Sapphire Reserve (3x on air travel), the American Express® Gold Card for 3x on airfare when booked directly with the airline or through Amex Travel, or the Chase Sapphire Preferred Card for 2x on travel.The information for the Citi Prestige Card has been collected independently by The Points Guy. The card details on this page have not been reviewed or provided by the card issuer.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.Sample flightsThere are a ton of possibilities with this fare sale. I found fares for under $400 from multiple U.S. cities to multiple European capitals.Keep in mind that some of these fares are basic-economy tickets, so you will pay extra for seat selection, early boarding and bags, and you may not earn elite status credit or miles on some fares.Here are a few great deals.Newark to Paris on Tap Air Portugal for $358Newark to Paris on Tap Air Portugal for $358. (Screenshot courtesy Google Flights)New York to London on JetBlue for $420NY to London on JetBlue for $420. (Screenshot courtesy Google Flights)San Francisco to London on Tap Air Portugal for $458Tap Air Portugal from SFO to LHR for less than $500. (Screenshot courtesy Google Flights)Boston to Barcelona on Tap Air Portugal for $392Boston to Barcelona on Tap Air Portugal for $392. (Screenshot courtesy Google Flights)Los Angeles to Stockholm on SAS for $387Los Angeles to Stockholm on SAS for $392. (Screenshot courtesy Google Flights)Maximize your purchasePay with The Platinum Card® from American Express for 5x on airfare booked directly with the airline or through Amex Travel (on up to $500,000 on these purchases per calendar year), the Citi Prestige® Card for 5x on airfare, the Citi Premier® Card (3x on air travel), Chase Sapphire Reserve (3x on air travel), the American Express® Gold Card for 3x on airfare when booked directly with the airline or through Amex Travel, or the Chase Sapphire Preferred Card for 2x on travel.Bottom lineThere’s been no shortage of deals lately, especially on international itineraries, but this wide-ranging sale has something for every type of traveler. These deals are so good, in fact, I may need to adjust my 2022 travel plans to add Europe to the mix.