This is a list of aviation-related events from 1934:

Events

January

• Soviet pilots Fedossenko, Wassenko and Usyskin take the stratosphere-balloon Ossoaviachim I to 22,000 m (72,160 ft).
• January 10-11 - A flight of six US Navy Consolidated P2Y flying boats set a new distance record for formation flying, 2,400 miles (3,862 km) between San Francisco and Pearl Harbor, also setting a new speed record for this crossing of 24 hours 35 mintues.

February

• February 3 - Lufthansa begins the first regular airmail service across the Atlantic Ocean, between Berlin and Rio de Janeiro.
• February 7 - the first airmail flight between Australia and New Zealand is made by Charles Ulm in an Avro Ten , taking 14 hours 10 minutes.
• February 19 - the United States Army Air Corps begins flying US airmail after the government cancels all existing airmail contracts due to alleged improprieties by the previous administration during the negotiations of those contracts.

April

• April 11 - Renato Donati sets a new altitude record of 14,433 m (47,352 ft) in a Caproni Ca 113 .

May

• May 8-23 - Jean Batten sets a new women's speed record between England and Australia. She flies a de Havilland DH.60 and makes the trip in 14 days 22 hours.
• May 29 - Highland Airways commences the first regular airmail service within the United Kingdom, between Inverness and Kirkwall

June

• June 4 - the US Navy commissions its first purpose-built aircraft carrier, USS Ranger.
• June 29-30 - Benjamin and Joseph Adamowicz brothers, amateur pilots, flew across the Atlantic

July

• July 15 - Varney Speed Lines (later to be Continental Airlines) makes its first passenger-carrying flight.
• July 19 - F9C Sparrowhawk parasite fighters from airship USS Macon successfully launch from the airship, scout out the cruiser USS Houston and return to the Macon.
• July 19-August 20 - Gen Henry Arnold leads ten Martin B-10 bombers on a 8,000 mile (12,875 km) proving flight.

August

• August 8-9 - James Ayling and Leonard Reid make the first non-stop flight from Canada to England, in a de Havilland DH.84 , taking 30 hours 50 minutes for the flight.
• August 28 - September 16 - the fourth International Tourist Aircraft Contest Challenge 1934 in Warsaw, won by the Polish crew of Jerzy Bajan on the RWD-9 plane.

September

• September 7 - 16 - 9,537 km race over Europe and North Africa and a speed trial of the Challenge 1934 contest.
• September 22 - Sir Alan Cobham sets out in an Airspeed Courier in a failed attempt to fly non-stop from England to India.

October

• October 20-November 5 - MacRobertson Air Race flown from England to Melbourne, Australia to celebrate the centenary of the state of Victoria. The £75,000 prize money is won by Charles Scott and Tom Black flying de Havilland DH.88 Comet Grosvenor House.
• October 23 - Francesco Agello sets a new airspeed record in the Macchi MC.72 , of 709 km/h (440 mph).

December

• December 8 - Imperial Airways extends its airmail service to Australia.

First flights

January

• January 14 - De Havilland DH.86

February

• Supermarine Type 224

March

• March 30 - Sikorsky S-42

April

• Mitsubishi G3M (as Ka-9 prototype)
• April 17 - De Havilland Dragon Rapide
• April 17 - Fairey Swordfish prototype K 4190

May

• May 9 - De Havilland Hornet Moth
• May 11 - Douglas DC-2

June

• June 26 - Airspeed Envoy
• (date unclear in summer) - PZL.23 Karas

July

• July 27 - Supermarine Stranraer

August

• August 14 - Dewoitine D.510

September

• September 7 - Hawker Hardy
• September 8 - De Havilland DH.88
• September 12 - Gloster Gladiator
• September 12 - Hawker Hind

October

• October 7 - Tupolev SB

November

• November 23 - Bloch MB.210

Entered service

May

• May 18 - Douglas DC-2 with Transcontinental and Western Air

exact date unclear - PZL P.11a in the Polish Air Force and PZL P.11b in the Romanian Air Force