Over twelve months: where the drops came from, how often, and how far. Past deals are no longer bookable and so are not links — what they add here is the pattern.
Where the deals to Rotterdam came from
The bar says how often a drop has been proven from that airport over twelve months. The badge says how far the price fell.
VancouverYVR · Canada8−40 %seen Oct 16
TorontoYYZ · Canada6−40 %1 bookable
SeattleSEA · United States5−30 %seen Nov 6
LisbonLIS · Portugal4−50 %1 bookable
WashingtonIAD · United States2−40 %1 bookable
PhiladelphiaPHL · United States2−40 %1 bookable
San FranciscoSFO · United States2−40 %1 bookable
MontrealYUL · Canada2−40 %seen Oct 29
NewarkEWR · United States1−40 %seen Sep 21
ChicagoORD · United States1−40 %seen Oct 17
When the deals show up
A bar’s height is the number of drops spotted that month, its colour the month’s best discount. The tallest is October.