This deal has expired, but be sure to check out our Top 25 deals of the week for savings on trips to destinations around the globe.

Looking to book your next European adventure right now? SWISS airlines' current sale includes nonstop flights to Zurich and Geneva for as low as $837, round-trip. We love these fares, especially because they cost about $660 less than what we're seeing for summer flights.

Here are some of the fares we found.

Fly Boston-Zurich for $851 round-trip; fly New York (JFK)-Geneva for $837 round-trip; and fly Newark-Geneva for $837 round-trip. The Newark itinerary is sold by SWISS Airlines and operated by United Airlines.

Travel April 6 through May 15 at these prices, but book quickly: travel must be reserved by March 4. (Note: Most bookings require at least six days between inbound and outbound flights.)

Can’t make up your mind? Take advantage of SWISS’s reservation-only option at check-out for an additional $27. This add-on gives you a bit more time to decide without the commitment of booking.

Book directly through SWISS Airlines' website.