We're booked on Iberia to TLV for Pesach, but I'm concerned that they may not be flying the MAD-TLV leg by then. I'm thinking of booking MAD-TLV on El Al as insurance. It looks like if I decide to cancel the El Al flight, I can get a voucher that's valid through 2025, so there's a low risk that I'll lose my money. Any thoughts on this?