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 Birmingham 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.
Fort LauderdaleFLL · United States27−50 %2 bookable
HoustonIAH · United States25−40 %1 bookable
OrlandoMCO · United States19−50 %seen Nov 6
WashingtonIAD · United States13−50 %seen Nov 5
DallasDFW · United States11−40 %seen Nov 2
ChicagoORD · United States7−30 %seen Nov 6
PhiladelphiaPHL · United States5−40 %seen Oct 29
MiamiMIA · United States4−40 %seen Nov 2
Los AngelesLAX · United States3−30 %seen Oct 8
DenverDEN · United States3−20 %seen Nov 3
Las VegasLAS · United States2−30 %seen Oct 25
SeattleSEA · United States1−30 %seen Oct 5
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.