His ninth trip to the region since the war began in October comes days after the US presented a modified proposal aimed at bridging long-standing gaps between the two sides.
The US and Israel have expressed optimism about a deal since talks resumed in Doha last week, but Hamas says suggestions of progress are an "illusion".
Differences are said to include whether Israeli troops will be required to withdraw fully from the Gaza Strip, as Hamas insists.
Poster Comment:
If Blinken is in Israel, it means that he thinks he can get Netanyahu to agree to a ceasefire.