The distance between Hawaii and California varies depending on the specific locations being measured, as both are geographically diverse regions with multiple points of reference. However, the distance is most commonly calculated from Honolulu, Hawaii, to Los Angeles, California, which are major urban centers in their respective regions.
The approximate straight-line distance (as the crow flies) from Honolulu to Los Angeles is about 2,500 miles (4,023 kilometers). If you are traveling by plane, this is roughly the distance that would be covered on a direct flight between the two locations. Keep in mind that actual travel distances can vary slightly depending on the flight path taken.