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 Changsha 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.
VancouverYVR · Canada6−40 %seen Oct 24
VictoriaYYJ · Canada6−40 %seen Oct 25
OttawaYOW · Canada4−40 %2 bookable
EdmontonYEG · Canada3−40 %seen Oct 25
LondonLHR · United Kingdom1−40 %seen Nov 4
San FranciscoSFO · United States1−40 %seen Oct 13
CalgaryYYC · Canada1−40 %seen Oct 25
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.