A soon-to-be-married couple claim they were unfairly kicked off a United Airlines flight in Houston, as they tried to head to Costa Rica for their wedding.
It comes in the same week a man was forcibly dragged off a United flight, sparking a boycott of the airline, and another man claiming he was stung by a scorpion on board a flight.
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The couple say they boarded the plane on Saturday afternoon, local time, to find a man napping in their assigned seats in the economy section.
They then moved forward to empty seats, while staying in the economy section, NBC reports.
Michael Hohl and Amber Maxwell were told to return to their ticketed seats, and requested an upgrade from the flight attendant, which was turned down.
Shortly after sitting down in their assigned seats, a US Marshall asked them to get off the plane, for being disorderly and a hazard to the safety of the flight and other customers.
Due to be married on Thursday, they say they won't be flying United Airlines again and Mr Hohl says the customer service has "gone downhill".
United Airlines told NBC the customers repeatedly tried to sit in upgraded seats and wouldn't follow crew instructions.
In a statement, it said: "We're disappointed anytime a customer has an experience that doesn't measure up to their expectations. These passengers repeatedly attempted to sit in upgraded seating, which they did not purchase and they would not follow crew instructions to return to their assigned seats. We've been in touch with them and have rebooked them on flights tomorrow."