List of aviators who became ace in a day
World War I
A Bristol F2B crew- Canadian pilot Captain Alfred Atkey and English observer Lieutenant Charles Gass- shot down five German planes in a single sortie over Arras on 7 May 1918. Two days later, they were credited with another five enemy machines in the course of two sorties on 9 May. Atkey survived the Great War credited with a total of 38 victories, making him the most successful two-seater pilot of the conflict.
Heinrich Gontermann achieved five aerial victories on 19 August 1918 when, flying a Fokker D.VII, he shot down a SPAD fighter in the morning and destroyed four Allied observation balloons in the afternoon.
Arthur Rowe Spurling, a Bermudian pilot of 49 Squadron of the Royal Air Force, with his observer, Sergeant Frank Bell, On 23 August 1918, flying a DH.9 bomber, single-handedly attacked thirty Fokker D.VII fighters, downing five of them (three by Spurling, two by Bell). Two days later Spurling shot down another D.VII over Mont Notre Dame. The two crewmen shared each other's victories, each attaining ace status in a single mission.
Frank Luke of the US Army Air Service, at the controls of a SPAD XIII fighter, achieved five victories on 18 September 1918, destroying two Fokker D.VII fighters, two observation balloons and an LVG reconnaissance plane. Luke was killed in action 11 days afterwards.
World War II
Triple-ace in a day
To achieve this a pilot must have destroyed 15 enemy aircraft in a single day. This has been achieved by only four pilots, all from the Luftwaffe:
- Emil Lang shot down 18 Soviet fighters on 3 November 1943.
- Hans-Joachim Marseille was credited with downing 17 Allied fighters in just three sorties over North Africa on 1 September 1942. 10 of those claims have been connected to actual Allied losses that day.
- August Lambert shot down 17 Soviet aircraft on a single day in 1944.
- Hubert Strassl shot down 15 Soviet aircraft on 5 July 1943 near Orel.
Double-ace in a day
To achieve this a pilot must have destroyed 10 enemy aircraft in a single day.
- Erich Rudorffer is credited with the destruction of the most aircraft ever in a single mission when he shot down 13 Soviet aircraft on 11 October 1943.
- Erich Hartmann, the highest-scoring fighter ace in history, downed 11 planes on 24 August 1944, in two consecutive missions. In the process, he became the first 300-kill ace in history, and as a result of this, gained the Knight's Cross of the Iron Cross with Oak Leaves, Swords and Diamonds, by then Germany's highest military award for standard servicemen.
- Hiromichi Shinohara, on 27 June 1939 set an Imperial Japanese Army Air Force record of eleven victories in a single day during an air battle over Tamsak-Bulak.
Ace in a day
- On 6 January 1940, Jorma Sarvanto, a Finnish lieutenant, destroyed six Soviet DB-3 bombers in four minutes on one flight. Sarvanto was the top scoring pilot in the Winter War, with 12.83 kills. The wrecks of the bombers were found near Kuopio.
- On 17 May 1940, Max Bucholz, a German Oberleutnant of 1./JG 3 shot down four RAF Bristol Blenheims and two French Curtis Hawk 75As. These were his first victories.
- On 29 May 1940 during the Dunkirk evacuation, RAF turret gunner Corporal Albert Lippett and his pilot, Flight Lieutenant Nicholas Gresham Cooke, claimed two Messerschmitt Bf 109 fighters and a Messerschmitt Bf 110 fighter during their first sortie, then added five Junkers Ju 87 bombers in their second that day, becoming Britain's first aces in a day in the Second World War. Both men would die when their Boulton Paul Defiant was shot down on 31 May as they continued to protect the ships and troops at the beach.
- On 15 June 1940, Pierre Le Gloan of the French Air Force destroyed five Italian aircraft in one flight.
- On 24 August 1940, Antoni Głowacki, flying with a Polish Squadron in the RAF, shot down three Bf 109s and two Junkers Ju 88 bombers over Ramsgate, to become the first ace in a day of the Battle of Britain.
- Also on 24 August 1940, RAF pilot Ronald Hamlyn shot down five aircraft, flying a Spitfire with 610 Squadron.
- On 31 August 1940, Brian Carbury, a New Zealand flying officer, claimed three Bf 109s and two He 113s (presumably Bf 109s) in two sorties.
- On 27 September 1940, Albert Gerald Lewis, a South African pilot officer, claimed six German aircraft (three Bf 109s, two Bf 110s and one Ju 88) destroyed, along with two probables and one damaged.
- On 7 October 1940, Archie McKellar. of the RAF shot down five Messerschmitt Bf 109s during the Battle of Britain.
- On 11 December 1940, within six minutes, Charles Dyson of the RAF's No 33 Squadron destroyed six Italian Cr42s.
- On 5 December 1941, within a few minutes, Clive Caldwell, the leading Australian ace of the Second World War, destroyed five German aircraft in North Africa. He received a Distinguished Flying Cross for the feat.
- On 12 August 1942, Richard John Cork of the Royal Navy's Fleet Air Arm shot down five aircraft during the defence of a Malta Convoy in Operation Pedestal. He was awarded the Distinguished Service Order for his actions during the battle.
- On 26 October 1942, Stanley "Swede" Vejtasa, a United States Navy (USN) aviator, downed seven Japanese planes in one sortie in the Battle of Santa Cruz while flying a Grumman F4F Wildcat. The action earned him his third Navy Cross in just five months.
- On 31 January 1943, Jefferson DeBlanc, a United States Marine Corps aviator, scored five victories in the Guadalcanal Campaign. His actions, despite mechanical problems with his aircraft and being vastly outnumbered, earned him the Medal of Honor.
- On 7 April 1943 James E. Swett, a USMC aviator, scored eight victories fighting against the Japanese Operation I-Go offensive. His actions that day earned him the Medal of Honor.
- On 12 June 1943, Lieutenant(JG) Vernon E. Graham, USNR, intercepted 35 A6M Zero fighters with VF-11, which was equipped with F4F Wildcat carrier fighters. Graham shot down 5 Zeroes, ran out of fuel mid-combat, and made a dead-stick landing on Pavuvu. 
- On 7 May 1944 Hans Waldmann of the Luftwaffe shot down six Soviet aircraft , taking his total to 120 aerial victories.
- On 25 May 1944, then again on 21 February 1945, Heinz-Wolfgang Schnaufer, a Luftwaffe night fighter pilot, became a two-time ace in a day, with five and nine victories, respectively.
- On 19 June 1944, then again on 24 October 1944, David McCampbell, the USN's top ace and Medal of Honor recipient, became a two-time ace in a day, with seven victories during the "Marianas Turkey Shoot", followed by nine victories on the second date.
- On 20 and 25 June 1944, Hans Wind, Finland's second highest scoring fighter ace, became a two-time ace in a day, with five victories both days. This was part of his 13 day tally, from 13 June to 25 June, of 29 aerial victories fighting against the Soviet Summer Offensive. His final World War II tally was 75.
- On 30 June 1944, Ilmari Juutilainen, Finland's top scoring fighter ace, shot down six Soviet planes flying against the same Soviet Summer Offensive as colleague and fellow ace in a day Wind. Juutilainen's final World War II score was 94.
- On 6 August 1944, George Preddy, the United States Army Air Forces' (USAAF) top P-51 Mustang ace, shot down six German Bf 109s, setting the U.S. record in the European Theater of Operations.
- On 2 November 1944, Donald S. "Bush" Bryan, P-51D pilot of the USAAF 352nd Fighter Group, shot down five German Bf 109s aircraft while en route to join and escort B-17 bombers on a mission to Germany. For his combat action that day he earned the Distinguished Service Cross.
- On 29 December 1944, within seven minutes, Richard Joseph "Dick" Audet of 411 Squadron RCAF, piloting a Spitfire IXe, destroyed two Bf 109s and three Focke-Wulf Fw 190s over Osnabrück.
- On 22 April 1945, Marine Corps VMF-323 pilots Major Jefferson Dorroh (six), Major George C. Axtell (five+), and 1st Lieutenant Jeremiah Joseph O'Keefe (five) all became aces in a day over Okinawa.
- Becoming the last fighter ace of World War II just two days before the surrender of Japan, on 13 August 1945 Oscar Perdomo, a P-47N Thunderbolt pilot with the USAAF, scored all of his five career victories fighting a Japanese attack near Keijo (Seoul), Korea.
Post World War II
On 7 September 1965, in air-to-air combat during the Indo-Pakistani War of 1965, Muhammad Mahmood Alam of the Pakistan Air Force claimed to have shot down five Indian Air Force Hawker Hunter fighters in less than a minute, with four being claimed to have been downed in 30 seconds. His claim is disputed by the Indian Air force. He was awarded the Sitara-e-Jurat ("The star of courage") and bar for his actions.
- Above the Lines: The Aces and Fighter Units of the German Air Service, Naval Air Service and Flanders Marine Corps, 1914-1918. Norman Franks, Frank W. Bailey, Russell Guest. Grub Street, 1993. ISBN 0-948817-73-9, ISBN 978-0-948817-73-1.
- Above the Trenches: A Complete Record of the Fighter Aces and Units of the British Empire Air Forces 1915-1920. Christopher F. Shores, Norman L. R. Franks, Russell Guest. Grub Street, 1990. ISBN 0-948817-19-4, ISBN 978-0-948817-19-9.
- Air Aces of the Austro-Hungarian Empire 1914 - 1918. Martin O'Connor. Flying Machines Press, 1994. ISBN 0-9637110-1-6, ISBN 978-0-9637110-1-4.
- Battle for Pakistan: The Air War of 1965. John Fricker. I Allan, 1979. ISBN 0-7110-0929-5, ISBN 978-0-7110-0929-5.
- French Aces of World War 2: Volume 28 of Osprey Aircraft of the Aces. Barry Ketley. Osprey Publishing, 1999. ISBN 1-85532-898-4, ISBN 978-1-85532-898-3.
- Over the Front: A Complete Record of the Fighter Aces and Units of the United States and French Air Services, 1914-1918. Norman L. R. Franks, Frank W. Bailey. Grub Street, 1992. ISBN 0-948817-54-2, ISBN 978-0-948817-54-0.
- Bracke, Gerhard (1997). Gegen vielfache Übermacht—Mit dem Jagdflieger und Ritterkreuzträger Hans Waldmann an der Ostfront, an der Invasionsfront und in der Reichsverteidigung (in German). Zweibrücken, Germany: VDM Heinz Nickel. ISBN 3-925-480-23-4.
- Aces High: A tribute to the most notable fighter pilots of the British and Commonwealth Forces in WWII. Christopher Shores. Grubb Street, 1994. ISBN 1-898697-00-0
- Geissinger, Steve (October 15, 1997). "Manmade Thunder". The Argus-Press. Retrieved July 17, 2011.
- Air Aces of the Austro-Hungarian Empire 1914 - 1918, pp. 190-191, 272, 324.
- Above the Lines: The Aces and Fighter Units of the German Air Service, Naval Air Service and Flanders Marine Corps, 1914-1918, p. 70.
- Guttman, Jon. Bristol F2 Fighter Aces of World War 1. Osprey Books, 2007. p30-32.
- Shores, Christopher. British and Empire Aces of World War 1. Bloomsbury Publishing, 2012. p63-65.
- Above the Trenches: A Complete Record of the Fighter Aces and Units of the British Empire Air Forces 1915-1920, p. 368.
- Above the Trenches: A Complete Record of the Fighter Aces and Units of the British Empire Air Forces 1915-1920, p. 390.
- Franks, Norman. Sopwith Camel Aces of World War 1. Osprey Books. 2003. p61-63.
- Over the Front: A Complete Record of the Fighter Aces and Units of the United States and French Air Services, 1914-1918, p. 161.
- Franks, Norman. Fokker Dr.1 Aces of World War 1. Osprey Books, 2001. p20-22.
- Franks, Norman. SPAD XII/XIII Aces of World War 1. Osprey Books, 2002. p74-76.
- Weal, John (1995). Focke-Wulf Fw 190 Aces of the Russian Front. Osprey. p. 72. ISBN 978-1-85532-518-0.
- Caldwell, Donald (2002). Walter J. Boyne, ed. Air Warfare: an International Encyclopedia: M-Z. ABC-CLIO. p. 395. ISBN 978-1-57607-345-2.
He once shot down 8 RAF fighters in 10 minutes, a day when he claimed 17 victories in three combat sorties
- Williamson, Gordon (2005). Knight's Cross, Oak-Leaves and Swords Recipients_1941-45. Osprey. p. 46. ISBN 978-1-84176-643-0.
- Sarvanto, Jorma: Stridsflygare under Karelens himmel, p. 202
- Shores (1994), p.190
- Ketley, Barry (1999). French Aces of World War 2. Oxford: Osprey Publishing. p. 76. ISBN 1-85532-898-4.
- Shores (1994), p.287-288
- Shores (1994), p.244
- Holmes, Tony (2002). Tomahawk and Kittyhawk aces of the RAF and Commonwealth. Osprey. p. 107. ISBN 978-1-84176-083-4.
- Shores (1994), p.191
- "Swede Vejtasa: In Memoriam". Naval Aviation News. Naval Air Warfare Division, USN. 2013-05-09. Retrieved 2017-10-05.
- American Fighter Aces Album. The American Fighter Aces Association. 1996. p. 212. ISBN 0-942548-63-9.
- Bracke 1997, p. 224.
- Stenman, Kari (2001). Lentolaivue 24. Osprey. p. 123. ISBN 978-1-84176-262-3.
- "Donald S Bryan". American Air Museum in Britain.
- "Jefferson David Dorroh, Jr". Military Times.
- "George Clifton Axtell, Jr". Military Times.
- William Grimes (August 27, 2016). "Jeremiah O'Keefe, Ace in His First World War II Battle, Dies at 93". The New York Times.
- Nordeen, Lon O. (2014). Air Warfare in the Missile Age. Smithsonian Institution. p. 144. ISBN 9781588344397.
- Air Cdre M Kaiser Tufail. "Alam's Speed-shooting Classic". Defencejournal.com. Archived from the original on 2011-09-27. Retrieved 2011-11-15.
- Fricker, John. Battle for Pakistan: the air war of 1965. pp. 15–17.
before we had completed more than of about 270 degree of the turn, at around 12 degree per second, all four hunters had been shot down." -- "My fifth victim of this sortie started spewing smoke and then rolled on to his back at about 1000 feet.
- Polmar, Norman; Dana Bell (2003). One hundred years of world military aircraft. Naval Institute Press. p. 354. ISBN 978-1-59114-686-5.
Mohammed Mahmood Alam claimed five victories against Indian Air Force Hawker Hunters, four of them in less than one minute! Alam, who ended the conflict with 1 1 kills, became history's only jet "ace-in-a-day."
- Werrell, Kenneth (2013). Sabres Over MiG Alley: The F-86 and the Battle for Air Superiority in Korea. Naval Institute Press. p. 188. ISBN 9781612513447.