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 Chicago 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 States18−50 %seen Nov 2
Los AngelesLAX · United States12−50 %seen Nov 5
DenverDEN · United States11−50 %1 bookable
Fort LauderdaleFLL · United States10−50 %1 bookable
AtlantaATL · United States8−50 %seen Oct 28
San FranciscoSFO · United States8−40 %seen Nov 4
BarcelonaBCN · Spain6−30 %seen Oct 26
WaterlooYKF · Canada6−30 %seen Nov 2
WashingtonIAD · United States5−30 %seen Nov 7
MadridMAD · Spain5−30 %seen Nov 1
SaskatoonYXE · Canada4−40 %seen Oct 25
HamiltonYHM · Canada4−30 %seen Oct 23
AbbotsfordYXX · Canada4−30 %seen Nov 2
RomeFCO · Italy4−20 %1 bookable
MinneapolisMSP · United States3−40 %seen Sep 29
PhoenixPHX · United States3−40 %seen Oct 29
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.