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 Washington 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.
AtlantaATL · United States15−50 %1 bookable
Fort LauderdaleFLL · United States14−50 %seen Nov 4
LondonLHR · United Kingdom13−30 %seen Nov 8
DallasDFW · United States11−50 %1 bookable
MiamiMIA · United States6−50 %1 bookable
OrlandoMCO · United States5−50 %seen Oct 25
AbbotsfordYXX · Canada5−30 %seen Nov 3
San FranciscoSFO · United States4−50 %seen Nov 4
VictoriaYYJ · Canada4−30 %seen Oct 23
HoustonIAH · United States3−30 %seen Oct 30
MinneapolisMSP · United States3−30 %seen Sep 25
BrusselsBRU · Belgium3−20 %seen Sep 23
RomeFCO · Italy3−20 %seen Oct 26
DenverDEN · United States2−30 %seen Oct 28
ParisCDG · France2−20 %seen Oct 23
Los AngelesLAX · United States2−20 %seen Oct 27
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.