1967
December: PFLP was founded by George Habash following the Six-Day War.
1968
November: Members of the Popular Front conducted the first of several large-scale hijackings, diverting an El Al aircraft to Algeria.
December: PFLP guerrillas attacked an Israeli plane in Athens. Israel refused the hijackers' demands and attacked the Beirut airport, destroying 13 aircraft.
1970
Sept. 6: The PFLP simultaneously hijacked a TWA Boeing 707 and a Swissair DC-8. Six days later, members hijacked a BOAC VC-10. All of the aircraft were forced to land at Dawson Field outside of Amman, Jordan. At the same time, another group of PFLP hijackers was stopped while trying to take over an El Al plane. Instead, terrorists hijacked a Pan American Boeing 747 and flew it to Cairo. All of the above planes were blown up on the ground after the passengers were unloaded.
Following the hijacking spree, King Hussein expelled all of the Palestinian organizations from Jordan. That same month, Hussein declared war on the Palestinian Liberation Organization (PLO), imposing martial law.
1971
The PLO moved its headquarters from Jordan to Lebanon.
1972
May: Using members of the Japanese Red Army, the PFLP killed 24 in an attack on Lod airport in Israel. The Israeli government responded by assassinating PFLP spokesman Ghassan Kanafani.
1973
The PFLP accepted a Palestinian National Council decision to end international terrorist operations, leading to the split of the PFLP and the Popular Front for the Liberation of Palestine-General Command (PFLP-GC).
1993
After signing the Declaration of Principles, the PFLP joined forces with a 10-member rejection front in Damascus. The PFLP refused to allow its members to participate in the 1996 Palestinian elections.
2000
May: George Habash resigned from leadership, making Mustafa Ali Kasam Zabiri (aka Abu Ali Mustafa) general secretary of the organization.
2001
August: Abu Ali Mustafa was killed in an attack by the Israeli army.
October: Ahmed Sadat succeeded Mustafa, leading the group to an even more radical ideology. Soon after, the group assassinated Rechavam Ze'evi, an Israeli Cabinet minister.
2002
Feb. 9: PFLP claimed responsibility for a suicide bombing that killed four and wounded 27 in Karnei Shomron in the West Bank.
March 7: A suicide bomber injured 10 in a supermarket in Ariel in the West Bank. PFLP claimed responsibility for the attack.
2003
Aug. 27: Two Palestinians were injured in clashes after the IDF closed the offices of the PFLP in Ramallah.
2004
Dec. 6: Israeli forces captured Massab Mahmoud, the joint head of the PFLP in Nablus. Mahmoud allegedly recruited participants for suicide bombings, as well as planning and financing the attacks.
2005
July: PFLP was invited to join the national unity government of President Mahmoud Abbas. It refused.
2006
Jan. 25: Ahmed Sadat was elected to the Palestinian Legislative Council, where he won one of 132 seats. Sadat, suspected of directing the assassination of Israeli Tourism Minister Rechavam Ze'evi, had been in custody since 2002.
March 14: Israeli troops raided a Palestinian jail in Jericho where Ahmed Sadat was being held. The next month, the Israeli government decided they had insufficient evidence to try Sadat for Zeevi's murder in 2001. Instead, Sadat would to stand trial for other offenses.
December: The PLFP, along with the Democratic Front for the Liberation of Palestine, helped broker a cease-fire between two other Palestinian militant groups -- Hamas and Fatah. The truce, which pertained to the Gaza Strip, was announced following inter-factional fighting that resulted in the deaths of more than a dozen Palestinians.
2007
July 20: Israel released 256 Palestinian prisoners from the Ketziot prison in western Negev. Before being released, each of the prisoners had to sign a promise to never again engage in terrorist activities. Those released included the deputy leader of the Palestinian Front for the Liberation of Palestine (PFLP), Abdel Rahim Malouh.
2008
Jan. 26: Former PFLP leader George Hasbah died of natural causes in Jordan.
Feb. 4: PFLP, with the Al-Aqsa Martyrs Brigades, claimed responsibility for a suicide bombing in Dimona, Israel, that killed at least one.
Mar. 26: Israeli security forces arrested Ibrahim Salem, a known PFLP operative. Salem admitted his participation in several attacks, including an October 2006 car bombing in Nablus.
Oct. 14: The PFLP threatened to kill Israeli Foreign Minister Avigdor Lieberman, who proposed the transfer of some Israeli Arab towns to Palestinian jurisdiction while annexing large West Bank settlements to Israel.
Nov. 12: Israeli government agents arrested three PFLP members at the Ein Beit Ilma Refugee Camp. The militants, Samer Zubahi Qasam Mabruk, Daud Muhammad Abdallah, and Amjad Mustafa Qasam, were active in various PFLP militant activities, according to the Israeli government.
2009
May 22: The PFLP claimed responsibility for an IED attack near the Karni checkpoint. There were no casualties from the explosion and no significant damage from the blast.
July 27: After a tunnel explosion in Gaza resulted in seven fatalities, a PFLP representative called on Hamas to supervise tunnel operations.
July 28: The Abu Ali Mustafa Brigades, the military wing of the PFLP, claimed responsibility for shooting an Israeli soldier near Gaza City and for launching a rocket-propelled grenade attack at Israeli patrols near the Jabaliya Refugee Camp.