Earlier quoted context omitted.
A plastic water bottle isn’t triggering a tsa pre check metal detector. I’m totally doing this next trip
I've never done that yet I've never had any trouble finding water past security or even on a plane?!
Flight from London to Barcelona: £16
Bottle of water past security: £5
Train to airport: £26
Taxi enters drop-off area for 30 seconds: £7
A person who wants to get the advertised flight at the advertised price has to be very careful.