To me I think it depends I traveled to la with my son when he was 6 weeks old. But I waited longer to travel with him on anything other then a car ride. He was 9 months when we traveled to Arizona by bus&train;.
I would wait a while before traveling via bus. It's a cesspool of germs. Is there another travel option? Trains perhaps? (even then wait a but and try to sit alone)
Thanks you guys