Israel's international airport is Ben Gurion Airport (TLV).
Israel has visa waiver agreements with many countries, but please check your status.
Be sure your passport is valid for at least 6 months. Bring the invitation letter with you.
There are several transportation options from the airport to Jerusalem (airport link):
- Bus Line 485 to/from Jerusalem. Cost: ~15 NIS. Tickets can be purchased for cash on the bus. Leaves every hour on the hour. Operates 24 hours weekdays, no Friday afternoon - Saturday evening. For more information click on "Afikim" in the link above.
Shared shuttle ("Nesher"). Cost: ~50 NIS per person.
Travel time: 1-2 hours (depends on time for shuttle to fill up and let people off).
Taxi. Cost: ~330 NIS.
Travel time: ~1 hour (less if traffic is light)