Cheap Fares US to Europe
There are currently two very good fare sales going on right now between the U.S. and Europe. Both involve SkyTeam airlines. Let’s take a look.
Going to Vienna from $380
Fly from Chicago, Miami or Boston to Vienna, Austria from $380 roundtrip.
Fares are limited with this sale and there are some restrictions on travel dates. I recommend using the calendar view on Google Flights or more advanced users can use ITA Matrix. You can find more info about this deal at View from the Wing.
Going to Dusseldorf from $400
Additionally, you can fly from New York, Philadelphia, Miami or Los Angeles from $400 roundtrip. Flying from L.A. is a great deal at just $450 roundtrip considering the distance.
Again, I was able to easily find these sale fares with Google Flights, but ITA will work well too. There seems to be fairly widespread availability the next couple of months, but travel days are restricted. You can find more info about this deal at The Flight Deal.