Britney Spears triggered an enormous scene on a personal flight again from Mexico … and TMZ has obtained a photograph of her on the jet … and you may inform why people in her orbit are involved.

An emotional Britney has lotion or sunscreen slathered throughout her proper arm. It seems she’s chatting with a lady, presumably a flight attendant.

We broke the story … Britney was flying along with her safety Thursday from Cabo San Lucas to LAX when she began consuming … after which lit up a cigarette and began smoking.

Our sources informed us flight attendants have been alarmed and ordered Britney to place out her cig, which she did … however we have been informed she was “troublesome,” and when the aircraft landed at LAX, authorities gave her a warning.

Loopy factor is … we’re informed this photograph was snapped BEFORE the aircraft even acquired off the bottom in Mexico.

Britney seems like she went straight from her oceanfront resort to the airport … she’s sporting a tiny pair of white shorts, her wide-brimmed hat seems prefer it’s hanging on for expensive life and her hair is a tangled mess.

Britney was flying on JSX, a personal aircraft service, and a spokesperson informed us that they had “no touch upon the alleged occasions described.”