Maybe not as catchy as stopping to smell the roses, but Lufthansa has put Amsterdam (and the rest of Europe) on sale for this Spring.
The lowest fare to Amsterdam that I could find is a very attractive $480 from Denver. From most East Coast gateways to Amsterdam is still attractive in the low $600 range.
Aside from AMS, Boston (Aboard the A350!!) to Madrid or Barcelona can be booked for only $469. San Jose to Copenhagen is priced in the mid $600 range.
In fact, most European destinations can be booked for fares ranging between $600-$900 during this promotion.
The sale runs through March 15, 2017. Departing flights must take place between April 7 and April 30, while return travel must happen by October 30, 2017. You must purchase your tickets at least 7 days ahead of your departure.