nanny-you will sometimes have a codeshare from tel aviv to zurich or geneva operated by elal.
TO some above posters: bear in mind when traveling issues can occur beyond your control. A couple I know had a weather delay forcing them to stay in zurich overnight the wife became sick to her stomach from hearing the german over and over again.
In a more concerning scenario I also know of a person who had to stay in Istanbul.The person in turkey was offered accommodation as the delay was due mechanical failure and turkish air was footing the bill. However due to fear of antisemitism and security concerns they opted to stay in the safety of the airport.
Many things can happen when traveling so far away.If given a choice why fly on an airline operated by out and out sonei Yisroel or are run by countries where if stuck you can be placed into sakana?