“Polar vortex” triggers travel advisories & airline fee waivers 01/05/14"Polar vortex" triggers travel advisories & airline fee waivers → Weatherairline travel advisories/fee wairvers/polar vortex/Snowstorms
Snowstorm triggers cancellations & fee waivers 01/02/14New Year's snowstorms trigger cancellations & fee waivers → Weatherairline fee waivers/cancellations/Snowstorms/storms