When flying from Regina to San Juan, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
For a flight from Regina to San Juan, you will be flying from Regina. Regina (YQR) is just 4.0 km from the centre of the city. Regina is the only Regina airport and it handles 0 outbound flights to San Juan per day. 2 airlines have flights to San Juan from Regina on a regular basis.