It had been offering two daily flights to Minneapolis until the pandemic, then cut back to the current schedule of just one.
A statement from the airport says, "While we’re disappointed in Delta’s decision, we have already begun outreach to other carriers to advocate for our region and explore what opportunities may be available. The ongoing pilot shortage continues to impact many regional airports and these decisions are unfortunately more and more common as a result."
Delta currently offers two daily flights to Atlanta.
In 2020, the airline ended non-stop flights between the Quad Cities and Detroit.