When flying from Charleston, West Virginia to Osaka, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
Located just 2.7 mi from the city center, Charleston Yeager is the airport most travelers will use when flying to Osaka from Charleston. Booking flights from Yeager (CRW) to Osaka should be relatively easy as there are 0 daily outbound flights to Osaka from 0 different airlines.
This is defined as Charleston Yeager Airport (CRW) and Osaka Kansai Intl Airport (KIX). Codes like Osaka Kansai Intl Airport are often used to just call airports uniquely. Osaka Itami Airport (ITM), Kobe Airport (UKB) are other airports near this flight route and their unique identifiers/IATA codes.