AB, I agree completely, I wouldn't take that route. I don't know any other way to get to the 215 either or you could go through SB.
If you are really desperate to get out, this may be hard to make on time but you can do it: take the 138 west to the 14, south on the 14 to the south 5 to the 210. Take the 210 to the 15 south and get to Ontario that way; or from the 210 drop south on Archibald to the 10 and from there to the airport.
But be sure to check the status of the 14 first! It will take you through Canyon Country.