Jet2 said it is awaiting an explanation from aviation officials in France as to why one of its passenger aircraft was shadowed by a French fighter plane.
Flight LS1204 was returning from Malaga to Birmingham on Friday when it was tracked by the military jet for up to 15 minutes.
One passenger, Sarah Hatfield, from Dudley, said: "It was so close I could read the writing on its tail fin.
"The feeling on board was a mixture of excitement at seeing the fighter so close up and terror as to if we were about to get shot down."
She said a member of cabin crew announced there was nothing to worry about. But Jet2 has asked French aviation officials for an explanation.
A spokesperson for Jet2 said: "We are awaiting clarification from the French air traffic authorities, as to why a military aircraft was apparently tracking our aircraft".
