Southwest says the first checked bag will cost $35 and the second will cost $45. Here's what you need to know about the end to free bags.

Starting on Wednesday, the Dallas-based carrier will charge customers $35 for their first checked bag and $45 for their second checked bag. The bag fee change will also apply to existing flight itineraries changed on or after May 28, Southwest confirmed to "Good Morning America."

Key Takeaways Southwest Airlines will end its decades-long "two bags fly free" era for new bookings beginning tomorrow.The new fees of $35 for a first checked bag and $45 for a second will apply to Southwest's Basic,