Entering Israel
All travelers entering Israel, both Israelis and foreigners (holding permit to enter) must complete a special online form, found here.
Please note: The form can only be filled in within 24 hours of departure. After submitting the form, wait for an approval which you will show proof of on a smartphone, or print out and bring along with you to the airport. You will not be allowed to fly without this form completed correctly.
Departing Israel
Similarly, all travelers departing from Israel are also required to complete an online form, found here. NOTE: A separate form must be completed for each adult family member.
Please note: The form can only be filled in within 24 hours of departure. After submitting the form, wait for an approval which you will show proof of on a smartphone, or print out and bring along with you to the airport. You will not be allowed to fly without this form completed correctly.
UPDATE: As of January 26, all passengers traveling to the USA are required to present a negative COVID test from within 3 days of departure. See here for further details.