So where do you need to go in order to find an Orbitz promo code?
Orbitz.com is a good source and lists many coupons right there. The current coupon is OUTTAHERE which gives 20% off hotel stays. Most major hotel chains are excluded.
RetailMeNot is one of my favorite sites for coupons. The team at RetailMeNot manages a surprisingly good update cycle and while many coupons may show as expired, it is usually my best source for coupons and also for an Orbitz promo code.
Slickdeals also has a coupon section that highlights current Orbitz promo codes. I find it somewhat less well-maintained than it should be.
Did you know that FlyerTalk maintains a section dedicated to just coupons and promo codes (incl. Orbitz) for several online booking sites? Make sure you go to the last page (most recent posts) to find a recent Orbitz promo code.
Orbitz Rewards allows you invite friends to join the site. If they book something, you and your friend get $25 off hotels. That is a great deal if you have a lot of friends traveling occasionally.