I was searching on Delta website for one-way tickets for BNA-OKA on 1/27/2023. We want to take an evening flight so it will be morning time in Okinawa when we get there. However Delta only shows 15 flight results and all of them are morning flights (departure at 5:27am and 6:00am). There is no button or link to see more results. When I searched on Capital One Travel, it showed flights for all different times (morning, afternoon and evening). When I searched on Google Flights, there is no result returned for Delta Airline.

We actually don't mind to book through Capital One to get more miles, just concern how easy to make changes if we purchase the tickets through a third party? What is your experience?