It comes after the couple were accused of hypocrisy in September when they flew home from a climate change event on a private jet. .

The passenger wrote on social media: 'Ok this might sound unbelievable and I couldn’t get a good picture and I get [sic] you can say this could literally be anyone….BUT….Prince Harry and Meghan were on our flight to LA last night.

Pictured: The royal couple attended the Veterans Day Salute to Freedom gala Museum in New York so former soldier Prince Harry could present fellow veterans with bravery awards .

The morning after the gala, Prince Harry and Meghan Markle were spotted leaving their NYC apartment on Veterans Day as they headed to a New Jersey army base for a special event

The couple have been branded hypocrites for their use of private jets as well as their recent decision to publicly and financially back an 'ethical' Wall Street fund that invests in oil and gas. 

Prince Harry and Meghan Markle arrived back in Santa Barbara on a private jet as they gave long hugs to staff including Archewell's CEO Mandana Dayani (pictured right next to Meghan)

The couple gave a speech at Global Citizen Live, an environmental event to tackle climate change held in Central Park in September, before they took a private jet back to their LA home

The couple were accused of hypocrisy in September after they left a concert urging action on climate change and extreme poverty on a private jet