I need to send my 14 year old grandson from Detroit to Portland, OR by himself, in July. Last year I put him on a Southwest flight that was direct, but with one stop. This year, I see that SW has no direct flights. The boy's mother is resistant to having him make a plane change (at about $250 for the trip).

So far, my only other alternative is to put him on a Delta non stop for $450 plus a $100 unaccompanied minor surcharge. Ouch.

Any tips on finding another airline that would fly this route with no plane change?

Any other suggestions?

Thanks in advance.