Airline expert reveals the must-do airport tricks to avoid missing your flight – and what to do when it happens

AN airline expert has revealed some vital airport tricks to avoid missing your flight – and what to do if it happens.

Arriving at the gate too late can be a stressful, and costly, error and could ruin your holiday before it even begins.

From rebooking transport to rearranging hotel stays, you could end up shelling out thousands in extra fees and charges.

Or, even worse, you could...