PSA: check in as soon as online check in is available. Our daughter had a flight this afternoon Israel time in TLV to JFK. She got to the airport over four hours before the flight. despite having a confirmed ticket and an assigned seat that we booked back in the summer they told her that the flight was overbooked and she was being involuntarily bumped because other passengers had checked in earlier.
She pushed back, but the supervisors refused to do anything despite the confirmed seat. They wanted to put her on a flight leaving 12 hours later that is also fully booked. We were able to reach out to a couple of people with some connections higher up in El Al and push her back onto the flight at 4 am our time after a couple of tense hours, but moral of the story seems to be to check in early these days since El Al is over booking their flights. It could be that they targeted her because they figured a lone seminary girl would be an easy person to bump but definitely pays to check in early.