Southwest will serve the route with a 717. 11:10a (239) going to DEN, 12:45p (1176) coming back. On Saturday flight 695 departs DAY at 9:00a and flight 1892 departs DEN at 12:20p. The Sun-Fri flights could very well be a quick turn of the same aircraft in DEN.

Pricing is similar to Frontier, who operates two 319s on the route (one at ~10:50a, one at 7:15p) and United, who uses a CR7 (and takes off from DEN at the same time as F9's morning flight). FL's addition of this route brings the number of airlines on the route to three, with four daily flights (three if you discount the fact that UA* and F9 take off at the same time) and ~470 seats. The question here is how much WN is trying to poach UA and F9 (mostly F9), versus how much they're actually trying to stimulate demand, since their flight is only two hours after the UA/F9 morning flights.

Compare this route to DEN-CVG, which has a UA* CR7 and a DL 738. Dayton actually has significantly more capacity right now than CVG (1.5h away), and the difference will just continue to grow.