The clean-up crew quickly alerted airport doctors to the surprise discovery aboard the Gulf Air flight, which had just landed from Bahrain and was preparing for a turn-around flight, an airport official said.
The baby boy was then rushed to a hospital, where he was declared healthy and turned over to social welfare officers, the official said.
Pictures taken by airport photographers showed the baby swathed in a towel while doctors warmed him up under a light bulb.
Airport officials said they named the mystery baby "Jorge Francis" and efforts to locate his parents would be left to social welfare officials.
Officials from Gulf Air office in Manila were not immediately available.
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