When flying from Shannon to Oslo, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
Shannon (SNN) is the airport you will fly out of if you book a flight from Shannon to Oslo. You should not have trouble finding flights to Oslo from Shannon; the airport handles an average of 0 outbound flights to Oslo per day. You should also have plenty of airline options to choose from since 0 airlines have flights from the Shannon airport to Oslo. It is only a 2.1 mi journey to Shannon (SNN) from Shannon’s city centre.