One of the first ideas for scoring a deal on pizza is a quick search through your junk mail for VALPAK or other direct marketing. Read on if you don't have anything good in your junk mail.
Papa John's will charge $10 for all large pizzas and $11.99 for an extra-large pizza with four toppings. Pizza Hut is selling any pizza for $10.
Here's some links which may also be of use as you look to score a deal:
VALPAK. You'll have to type your zip code, choose pizza/restaurant.
Dominos Pizza. Enter zip code to get local deals. Retailmenot coupons.
Papajohn's. Click on menu & specials, then enter your location. Also, retailmenot's Papajohn's coupons.
Pizzahut. Also, retailmenot's coupons.
List of 99 restaurants offering free pizza delivery today (sorted by state).