Here is a screen shot comparing, side by side, the flight search results on both Orbitz.com and CheapTickets.com:
Click the image for a full-size view.
Note the similar layout, same search results, same wording, same abbreviations, same pretty much everything, except the colors, theme, and a few minor layout differences. The results are so similar, it appears they may be using even the same database. One notable difference in the search results is that Orbitz returns 250 results, whereas CheapTickets returns 150. But in both cases it could be an arbitrary cutoff.
If you look at the whois lookup on both sites, you’ll find that Cheap Tickets is actually owned by Orbitz.
Good catch. I guess I should have checked harder. It’s interesting to see how businesses work with different storefronts, especially on the Internet.