Why IndiGo and SpiceJet are charging passengers for selecting seats during web check-in, explained Updated : November 28, 2018 03:02 PM IST IndiGo’s decision, besides causing consternation among passengers, also created confusion. Low-cost carriers are known to encourage passengers to check in online so that they can reduce the number of employees at airports. So why did IndiGo still opt for a move that effectively will make people queue up at airport counters and potentially delay boarding?