Flying with a PCC line..

I’d be really grateful if someone could tell me whether it’s safe to take a 3 hour flight (well as safe as flying can ever be!) with a picc line in. I’ve had this in now since March and as I’ve just started on herceptin looks like it’ll be part of my accessory kit for another year or so. I am desperate to go on a proper holiday but have had conflicting advice from medics, would love to hear from anyone who has actually done it and survived!!