Originally Posted by
maskedavenger
....the boarding pass will not match your ID.....this is definitely grounds for them to deny your entry to the gate area.....and deny boarding if they have a check at the gate. It seems best that you try to get them to change it to your proper last name. In any case, good luck.^
If the OP gets to the airport earlier enough, attempting to go through security first (and showing your passport--with your middle name--as ID, rather than your driver's license) may just work. If it doesn't, you could then go to the ticket counter and ask them if they could correct the ticket. Another option would be to buy a fully-refundable ticket to some other destination, clear security using that ticket, and then refund it. Then travel on your original ticket.