How Much Does It Cost To Upgrade To First Class At Check-In?

Upgrading to first class is a most common question that passengers ask themselves during the check-in process. Whether standing at an airport kiosk or scrolling through an airline’s mobile app, passengers often notice an upgrade offer and wonder if the price is worth it. The appeal is obvious – a larger seat, more legroom, complimentary food and drinks, priority boarding, and sometimes lounge access. But how much does it actually cost to move from economy class to first class at check-in?