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 David 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.
TorontoYYZ · Canada7−30 %seen Nov 11
WashingtonIAD · United States6−50 %1 bookable
DenverDEN · United States2−40 %1 bookable
New YorkJFK · United States2−40 %seen Nov 3
BostonBOS · United States1−30 %seen Sep 30
MontrealYUL · Canada1−30 %seen Oct 28
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 November.