Jenna Mde explained how important it was for her to not miss a breast-pumping session, especially when travelling.
She publicly thanked the airline on Facebook for making her time away from her babies "a bit more bearable".
Mde wrote on Facebook: "Yesterday, two flight attendants, Kaitlin K and Loretta, on my flight from Atlanta to Dallas-Love Field, allowed me to sit in an empty first class seat for more space and privacy while I pumped in flight."
"They offered me snacks and provided tons of water during my pumping session," she continued.
"Additionally, on my return flight this afternoon, the Dallas-Love Field gate attendant, Talesa, offered me an empty first class seat so I could do the same.
"I am incredibly grateful for the lengths these individuals took to make my role as mumma much easier and impressed by the advocacy this company has provided for breast-feeding and pumping.
"Thank you Delta for making being away from my babies a bit more bearable."
The post, which Mde wrote on 13 February, has been shared more than 3,200 times in four days.
Delta Airlines noticed the Facebook post and thanked Mde for sharing her positive experience.
"We are very happy to hear that Kaitlin and Loretta were able to be there for you when needed," they commented on the post.
"We would love to recognise them and pass your kinds words along as we know they would be very touched and happy to know this. Thank you for choosing Delta, we hope to serve you well in the future."
Mde's post encouraged other mums to share their positive experiences of the airline.
Kari Cobham said that during a connecting flight in Miami, she was unable to find a place to pump.
"There was nowhere but restrooms," she wrote. "It was getting painful and close to my flight. When I explained this to a Delta agent, she let me use the Delta lounge. And I wasn't even flying Delta.
"I almost cried at her kindness. And guess what? I always fly Delta now unless it's not available. Thanks for being awesome to nursing mums."
Another person noted Delta's pro-breastfeeding policy, commenting: "Whenever we have flown with them they always make sure to tell me before take off 'also, we are pro-breastfeeding at Delta so if that is something you do feel free to at any time during your flight'.
"Not that I needed the permission, but good for them for making the extra effort to make us feel welcome."