Maren Calloway is an aerospace engineer turned travel strategist who spent a decade optimizing logistics systems before applying the same discipline to airfare. She built Sparkflights to surface flights priced well below their cost-per-mile baseline — the metric airlines use internally but travelers rarely see.
Sparkflights was built on a simple premise: airfare pricing is noisy, and travelers deserve a signal. Every deal on this site is ranked by its cost-per-mile relative to a historical baseline for that route — the same metric airlines use internally to price inventory. When a fare drops well below that baseline, it shows up here.
We verify every deal before it goes live. No affiliate-driven padding, no expired fares left up for traffic. If a deal is on the board, it was bookable when we checked.