$399+: Low Iceland fares & more Europe (round-trip) Through winter
Icelandair

$250 off: Fares to Paris & Amsterdam (round-trip) Through Apr 30
OpenSkies

$519+: Low summer fares to Scandinavia (one-way) May 15–Aug 30
Scandinavian Airlines

$260+: France fares from major US cities (one-way) Through Mar 25
Air France

$233*+: New Year's fare sales to Europe (one-way) Through winter
United

Up to $250 off: Premium London fares (round-trip) Through spring
British Airways

Up to 70% off: Biz fares to Paris & more (one-way) Through winter
Air France

$187+: Discount winter fares to Europe (each way) Through Mar 25
Air France

$344+: Discount Finland airfares (each way) Through Apr 2
Scandinavian Airlines

$449+: Round-trip Sweden, Denmark & Norway fares Through March
Icelandair

$196+: Winter fares to European cities (one-way) Through Feb 28
CheapOair