The Houthis, an Iran-backed rebel group based in Yemen, have regularly launched missile attacks at Israel in solidarity with Hamas in Gaza, but it is rare for one to make it through Israel's air defences.
Yemen's Houthis say US bombed their capital after Israel vowed revenge for an airport strike.
The Israeli Air Force (IAF) pounded the port city of Hodeidah in Yemen in a wave of massive retaliatory strikes after Iranian-backed Houthi rebels fired a missile Sunday that hit Ben Gurion airport in Tel Aviv.