Most defenders will mine it. Once you have that flag, get out of the area. I'd highly recommend that cappers carry flare grenades. As a flag carrier, there's nothing worse than thinking you're almost home free, hearing that someone just locked you with a missile, and then being able to do nothing about it because you're carrying concussion grenades. If you don't see any defenders, or you know they're all away from their base, a sensor jammer pack could be just what the doctor ordered.
Remote defenses are powerless against a jammer pack.
Keep a close eye on your energy though, and try not to use your jetpack until absolutely necessary. It's no fun running out of energy when you're surrounded by turrets. You'll see enemies placing deployable cameras to try and counter sensor jammer packs. It doesn't work. Let them wonder why the cameras they placed all over the base won't work.