DarkRecon, remember to use Google Maps if you're not sure which route your character is going to take. Use it for looking up directions, locations, and photos. Remember, use the link for Google Maps, not the RP map.
Looking it up myself, it'd take about 30-60 minutes to drive there and about 5 hours to walk there in normal conditions. Considering the outbreak and chaos in LA, multiply that by 2, so about 1-2 hours by car and 10 hours walking.
Don't zip through it, because if you do, I'm not going to let you RP here any more. I want people here to take time to get a feel for the LA area. For reference, try to imagine that 1-5 minutes elapse between each post, so if you REALLY want to go all the way to LA International, that'd be about 12-24 posts minimum by driving and 120 posts walking.
Chances are, you don't want to waste that many posts on just getting there, so I'd recommend going off that course and going around different parts of LA. There's already enough people at LA International, and I can look stuff up for everyone if they don't feel like doing that work themselves.