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 Hanoï 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 · Canada12−50 %seen Nov 5
LondonLHR · United Kingdom8−30 %seen Nov 1
San DiegoSAN · United States7−40 %seen Oct 31
AtlantaATL · United States6−40 %seen Oct 16
MontpellierMPL · France6−30 %1 bookable
WinnipegYWG · Canada6−30 %seen Oct 7
TorontoYTZ · Canada5−30 %seen Nov 6
OttawaYOW · Canada3−40 %seen Oct 13
BostonBOS · United States2−40 %seen Oct 31
ChicagoORD · United States2−40 %seen Oct 7
PhoenixPHX · United States2−40 %seen Oct 27
Quebec CityYQB · Canada2−40 %seen Nov 7
MontrealYUL · Canada2−40 %seen Nov 5
MonctonYQM · Canada2−30 %1 bookable
DallasDFW · United States1−40 %seen Sep 25
CalgaryYYC · Canada1−30 %seen Oct 7
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.