In article ,
wrote:

If you want this kind of information, use www.itasoftware.com , it is not a
booking engine...rather it is a flight schedule and pricing site. It will
give you bukoo options for flights and routing that you can print and then
call a TA or airline with the itinerary that you choose.

Indeed a very neat and useful site (and fast) (and you can get official
fare rules for each flight, which can be very informative).

Tests for SFO to Munich in April seem to show that fares are distinctly
lower on Tues thru Thurs (and sometimes Mon) than on Fri thru Sun (and
sometimes Mon).

Is this a more or less general rule for flights US to Europe? And does
it mean possibly less crowded planes? -- or just equally crowded, but
less revenue for the airline?