PPC or affiliate program travel niche

Can someone recommend me some ppc or affiliate program for travel niche websites?

Booking.com affiliate program - http://www.booking.com/content/affiliates.html

ppc but no adsense?

I have been quite successful using 10-20 keywords per Ad grouping. Really, any more keywords than that and you'll most likely damage quality score and decrease your sales. I get quite aggressive in terms of increasing conversions by continually building out new groupings based on the competitors. Below is my contact info, email me (or give me a quick call), and I'll spend time with whomever brainstorming a few other quick ways you could increase ROI in your account. My cell is 256-398-3835