The 747 and A340 may have the range but the distances you mention are still-air ranges. What is the distance taking into account the average winds? If the distance to Chicago is 6,571 nm, what is it with an average headwind of, say, 50 kts? David > Mike, > Karachi to: > Chicago: 6571 nautical miles > > Los Angeles: 7270 nm > > Houston: 7371 nm > > The 747-400ER has a range of 7670 nm and the Airbus 340-500 has a range of > 8650 nm -- I got these from the Boeing & Airbus sites. I *think* these are > the only planes capabale of any of these routes (short of the Space > Shuttle). > > john > > -- > John F. Kurtzke, C.S.C. > Department of Mathematics > 278 Buckley Center > University of Portland > Portland, OR 97203 > 503-943-7377 > kurtzke@up.edu