On 1 July 1944 No.
 452 and No.
 457 Squadrons were transferred to the newly formed No.
80 Wing RAAF.
This wing had been established to support a planned offensive from Darwin into the Netherlands East Indies (NEI).
The offensive was cancelled in June, but this was not communicated to the wing, which continued to train for the operation until August.
After the operation was cancelled the wing and its squadrons had no purpose, but continued to conduct training exercises as a means of maintaining morale.
In November the wing was informed that it was to move to Morotai island in the NEI to take part in Allied offensives in the region.

No.
 457 Squadron's movement to Morotai was delayed until early 1945.
The squadron's ground crew departed Darwin by sea on 18 January and arrived on the island on 1 February.
The Spitfires departed Sattler on 6 February and arrived at Morotai two days later.
No.
 457 Squadron flew its first operations from Morotai on 10 February.
The squadron's main roles in this period were to conduct ground attack missions against Japanese camps and shipping as well as escorting other aircraft engaged in attacking these targets.
This involved a heavy workload, and the squadron flew over 293 operational sorties between February and the end of April.
From May No.
 457 Squadron's Spitfires began using dive bombing tactics as well as strafing targets with their guns.

No.
 457 Squadron participated in the Borneo Campaign during the final months of the war.
On 27 May it was ordered to prepare for deployment, and on 5 June its personnel and equipment sailed for Labuan island off the north-west coast of Borneo.
During this operation the squadron was attached to No.
 81 Wing.
The Spitfires departed Morotai on 17 June and commenced operations from Labuan two days later alongside No.
76 Squadron RAAF with the primary roles of providing air support to Allied troops in the area and air defence for the island.
On 20 June two No.
 457 Squadron fighters shot down a Dinah; this was the squadron's first "kill" since 12 November 1943.
Operations against the Japanese continued until the end of the war on 15 August 1945.
During the war 25 of the squadron's Australian personnel were killed.

Following the Japanese surrender No.
 457 Squadron initially remained at Labuan.
During this period it flew security patrols as well as training exercises and air tests.
The squadron's serviceable aircraft left Labuan on 9 October for Oakey, Queensland and arrived there on the last day of the month.
No.
 457 Squadron was officially disbanded at Labuan on 7 November 1945.
Following the war the squadron was awarded the battle honours "Fortress Europe, 1940–1944", "Pacific, 1941–1945", "Darwin, 1941–1944", "Morotai", "Borneo, 1945" and "Defence of Britain, 1940–1945".
On 1 July 1944 No. 452 and No. 457 Squadrons were transferred to the newly formed No. 80 Wing RAAF. This wing had been established to support a planned offensive from Darwin into the Netherlands East Indies (NEI). The offensive was cancelled in June, but this was not communicated to the wing, which continued to train for the operation until August. After the operation was cancelled the wing and its squadrons had no purpose, but continued to conduct training exercises as a means of maintaining morale. In November the wing was informed that it was to move to Morotai island in the NEI to take part in Allied offensives in the region.
No. 457 Squadron's movement to Morotai was delayed until early 1945. The squadron's ground crew departed Darwin by sea on 18 January and arrived on the island on 1 February. The Spitfires departed Sattler on 6 February and arrived at Morotai two days later. No. 457 Squadron flew its first operations from Morotai on 10 February. The squadron's main roles in this period were to conduct ground attack missions against Japanese camps and shipping as well as escorting other aircraft engaged in attacking these targets. This involved a heavy workload, and the squadron flew over 293 operational sorties between February and the end of April. From May No. 457 Squadron's Spitfires began using dive bombing tactics as well as strafing targets with their guns.
No. 457 Squadron participated in the Borneo Campaign during the final months of the war. On 27 May it was ordered to prepare for deployment, and on 5 June its personnel and equipment sailed for Labuan island off the north-west coast of Borneo. During this operation the squadron was attached to No. 81 Wing. The Spitfires departed Morotai on 17 June and commenced operations from Labuan two days later alongside No. 76 Squadron RAAF with the primary roles of providing air support to Allied troops in the area and air defence for the island. On 20 June two No. 457 Squadron fighters shot down a Dinah; this was the squadron's first "kill" since 12 November 1943. Operations against the Japanese continued until the end of the war on 15 August 1945. During the war 25 of the squadron's Australian personnel were killed.
Following the Japanese surrender No. 457 Squadron initially remained at Labuan. During this period it flew security patrols as well as training exercises and air tests. The squadron's serviceable aircraft left Labuan on 9 October for Oakey, Queensland and arrived there on the last day of the month. No. 457 Squadron was officially disbanded at Labuan on 7 November 1945. Following the war the squadron was awarded the battle honours "Fortress Europe, 1940–1944", "Pacific, 1941–1945", "Darwin, 1941–1944", "Morotai", "Borneo, 1945" and "Defence of Britain, 1940–1945".
No. 457 Squadron RAAF