Related: Is Delta Air Lines premium economy worth it between ... Delta's decision to remove its award charts in 2015 has led ...

Since Delta Air Lines eliminated its award charts in 2015, the SkyMiles program has become notably more unpredictable and, at times, outrageously expensive. With business-class flights on long ...

And if you're loyal to this airline, earning and redeeming Delta SkyMiles through the carrier's loyalty program can help you earn your way toward award flights. Here's what you should know about ...