An Air India Boeing 787, the same kind of plane that crashed 4 days earlier, was forced to turn around after a midair "technical issue," the airline says.

The Boeing 787-8 Dreamliner carrying 242 people bound for Britain's Gatwick Airport began losing altitude seconds after takeoff. All but one passenger died in the world's worst aviation disaster in a decade, with around 30 ground fatalities.

These fare reductions are primarily focused on Boeing 787 routes—the same aircraft model involved in the Ahmedabad crash—while flights operated by other aircraft types show relatively modest price differences.