This is a list of aviation-related events from 1955.

Events

January

February

March

April

May

June

July

August

September

October

November

December

First flights

January

February

March

April

May

June

July

August

September

October

November

December

Entered service

January

February

May

June

Retirements

Deadliest crash

Three crashes may claim the joint title of 1955's deadliest plane crash; two of these cases involved military aircraft. The first took place on 22 March, when the 1955 Hawaii R6D-1 crash, involving a United States Air Force Douglas DC-6, took place in mountainous terrain of Oahu, Hawaii, U.S., killing all 66 people on board. The second took place on 11 August, when two USAF Fairchild C-119 Flying Boxcars collided during a training formation near Altensteig, West Germany, killing all 66 people aboard both aircraft. The third, and the deadliest civilian aircraft case of 1955, took place on 6 October, when United Air Lines Flight 409, a Douglas DC-4 which crashed into Medicine Bow Peak near Laramie, Wyoming, U.S., killing all 66 people on board.