As part of a fare war that has involved travel to Europe from Washington DC, Lufthansa has launched their salvo with what I think are the lowest fares I’ve ever seen between Washington and Germany.
Specifically, you can book tickets for as low as $550 between Washington DC and Frankfurt for travel taking place between mid September through the end of October. For travel that takes you into November, the fare is only a few dollars higher at $605.
Deals to Munich are similar and begin at $560 and reach about $590 depending on the dates of travel between September and November.
Since this is not an official fare sale, there is no deadline for the fare. They’ll simply go away once the fare war subsides.
Keep in mind that any Economy Fare class booked on Lufthansa flights is eligible for Premium Economy upgrade bids. You can take a $550 fare, bid $150-200 each way and wind up having a Premium Economy seat with all the ‘spoils’ for under $1000!