Since Saturday, Spirit Airlines flights have been grounded as pilots headed to the picket lines, demanding pay that compares better with their rivals.

To the dismay of travelers, many of whom have been stranded for days, the company announced Tuesday that it has canceled flights through Thursday.

In a press release, Spirit said that it is processing future flight credits for customers for the full amount of their unflown flight purchase, and is also giving them a $100 future flight credit.