Originally Posted by
tusphotog
Your connection should be fine: 35 minutes at SJC is plenty of time. You don't have to walk far between gates there.
If your DEN-SJC flight is late at all, just tell them at the airport you want to move to the nonstop flight to ONT. Shouldn't be an issue even with a reward ticket.
+1
Even if it is delayed 5 mins, you can say "30 minutes is too short a connection for my comfort" and there is a good time they will accommodate you...