Are there nonstop flights from Dayton (DAY) to Santa Ana (SNA)?

No. The fastest connection is via Denver, about 4h 39m of total flying time.

What is the fastest connection from Dayton (DAY) to Santa Ana (SNA)?

via Denver ≈ 4h 39m, via Chicago ≈ 4h 43m, via Dallas-Fort Worth ≈ 4h 55m (estimated flying time, excluding layovers).

from 15,000 ANA miles (economy, one way, based on the published award charts).

James M. Cox Dayton International Airport (DAY) to John Wayne Orange County International Airport (SNA)・3,056 km

No nonstop flights. The fastest connection is via Denver (DEN), about 4h 39m of flying time (layover not included).

With milesANA 15,000 miles+ (via DEN)Economy, one way, estimate. Tap a connection for miles by cabin.

None.

6 one-stop options, sorted by estimated flying time. Tap one to see the airlines on each leg and booking links.

Times are estimated from distance. Check schedules, frequency and availability with the airline or a booking site.