The safest time of year to fly is during summertime.
According to available information, flying during the summer months is statistically safer. Furthermore, flying earlier in the day is also considered safer because pilots are generally more alert and less fatigued. More accidents tend to occur later in the day, especially when combined with bad weather and flight delays.
In summary:
- Safest Season: Summertime
- Safest Time of Day: Earlier in the day, when pilots are more rested.