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 Hô Chi Minh-Ville 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.
EdmontonYEG · Canada7−30 %seen Oct 8
WinnipegYWG · Canada6−30 %1 bookable
VictoriaYYJ · Canada4−30 %seen Oct 7
LondonLHR · United Kingdom4−20 %seen Oct 8
VancouverYVR · Canada4−20 %seen Oct 6
CalgaryYYC · Canada4−20 %seen Oct 8
OttawaYOW · Canada3−30 %seen Oct 4
SaskatoonYXE · Canada3−30 %seen Oct 8
BostonBOS · United States1−40 %seen Sep 29
San FranciscoSFO · United States1−40 %seen Oct 1
HoustonIAH · United States1−30 %seen Sep 30
San DiegoSAN · United States1−30 %seen Sep 26
TorontoYYZ · Canada1−30 %seen Oct 2
MonctonYQM · Canada1−20 %seen Sep 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.