<p>Transportation to and from Ontario Airport is not really difficult, but it’s not as easy as most. We had high hopes for the nearby rail station, but it doesn’t serve the airport! During peak times, the 5C Consortium often runs a shuttle; your son should receive information on making a reservation, and that’s probably one of the easiest ways to go (and certainly the cheapest). The rest of the time, it’s either SuperShuttle or a cab. We prefer a cab company based on Claremont because they’re local owner/operators who depend on students for their livelihood – consequently, they’re very friendly and accommodating. More comfortable and convenient than SuperShuttle, and about the same price-wise if I recall correctly. SuperShuttle is workable too, but I’d recommend he make a reservation before he travels. We’ve had some not-so-great experiences waiting a very long time for shuttles because the drivers wanted to hold out for full shuttles, or even for higher fares farther away. Having a reservation should take care of that concern in most cases.</p>