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 Oulan-Bator 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.
PhiladelphiaPHL · United States3−40 %1 bookable
DenverDEN · United States2−40 %seen Oct 4
MontrealYUL · Canada2−40 %seen Sep 30
San DiegoSAN · United States2−30 %1 bookable
NewarkEWR · United States1−30 %seen Oct 6
HoustonIAH · United States1−30 %seen Oct 2
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.