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 Chengdu 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 · Canada18−40 %seen Oct 26
ReginaYQR · Canada12−50 %2 bookable
MontrealYUL · Canada9−50 %1 bookable
TorontoYTZ · Canada8−40 %seen Nov 4
CalgaryYYC · Canada7−40 %seen Oct 24
NewarkEWR · United States6−30 %seen Oct 26
EdmontonYEG · Canada5−40 %seen Oct 25
MiamiMIA · United States4−40 %seen Oct 9
OttawaYOW · Canada4−40 %seen Oct 24
PhoenixPHX · United States3−40 %1 bookable
San DiegoSAN · United States3−40 %seen Oct 31
WinnipegYWG · Canada3−40 %seen Oct 25
FrankfurtFRA · Germany2−40 %seen Sep 30
WashingtonIAD · United States2−40 %seen Oct 30
San FranciscoSFO · United States2−40 %seen Nov 4
ChicagoORD · United States1−30 %seen Oct 15
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.