On Thursday, Allegiant announced a three-day fare sale for the Tucson flights with prices as low as $68, after initially offering introductory fares when the flights were announced in August.

Some of the cheapest fares start at just $38 and include flights from Indianapolis, IN to Fort Myers, FL (PQD), as well as Phoenix / Mesa, AZ to Las Vegas, NV. Allegiant provides low-cost service ...

The flights will run twice a week. “We are grateful to Allegiant Airlines for adding these two fantastic destinations,” Larry Krauter, chief executive officer, CVG, said in a statement.

Data from Charles M. Schulz–Sonoma County Airport said Allegiant’s flights from the Phoenix area were about 65 percent full on average. The same route flown by Alaska Airlines averaged 82 ...