Nadya Suleman says she recently endured the flight from hell -- but it wasn't the passengers or turbulence that ruined her trip ... it was the flight crew of Virgin America.
Octomom's manager, Gina Rodriguez, tells TMZ the two were going from LAX to NYC on Tuesday -- for some run of the mill porn press -- but claim the flight turned into a nightmare when the cabin crew purposely treated them like crap.
Rodriguez says they were forced to change seats, never got their beverages, overheard the crew laughing at them ... and Rodriguez says she was kicked out of the bathroom by a flight attendant for no apparent reason.
Rodriguez says she and Octo confronted the flight attendants responsible for the shoddy treatment and claim one snapped back, "I know who you guys are!"
Octo was so upset over the incident, she filed a report with the airline against the crew. She tells TMZ, "I was shocked to say the least how poorly they treated me on the plane. I would never book a flight on Virgin America again."
Virgin America insists Octomom's complaints of harassment aboard their aircraft are completely unfounded, and tells TMZ ... Octo was no model passenger.
A rep from Virgin says the airline stands by the crew's handling of Octo and her manager during a flight from LAX to NYC last week -- despite Octo's accusations to the contrary.
The rep adds, Octomom and her manager were difficult to deal with during the flight and, "Both guests had to be asked repeatedly to observe safety regulations."
As for kicking Octo's manager out of the bathroom ... Virgin claims she entered the restroom when the plane was landing -- which isn't allowed. They asked her to get out because per FAA rules -- they would have to delay landing if she didn't.
The rep tells us the airline's investigation is now closed -- so, this should be the last time the words virgin and Octomom are used in the same sentence.