"This photo of our Cabin Services Officer and grandmother of 12, Robyn was taken in Brisbane recently when she helped out a mum travelling with three young kids."
While the stressed mother took her two kids to the bathroom and got them ready for the flight, Fitzpatrick fed the baby, keeping him calm as he finished his bottle.
The photo has received more than 3100 likes and hundreds of reactions.
"Not all heroes wear capes! They both fly though," one person said of the flight attendant.
"She's definitely a keeper. Totally deserves a pay rise," another wrote.
One previous passenger shared her story of how impressed she was with her flight experience after another mum was having trouble with her baby.
"I was so impressed with Jetstar cabin crew on our recent flight Brisbane to Bali. There was a mum who was having a hard time settling her bub, each of the cabin crew took some time to walk around with bub so mum could have a break ... was amazing to watch."