CoolP wrote on Apr 11^th, 2012 at 5:20am:

I think, based on how the different countries and authorities publish their stuff, you will have problems finding a valid source. The best and maybe most helpful way for sim flyers may be the free and payware on the flight planning software. They show the airways, high and low, and you can then click-generate some flight plan of your choice. For lower airways, you can use the freeware Plan-G. I think older 1.x versions of FSBuild are freeware too. This would enable a rather powerful planning tool. Charts for sim folks are sold by Navigraph. They should mainly differ in legal aspects, not so much on the actual data. I think they offer enroute ones too, at fairly reasonable prices. The products for the rw pilots are sometimes free, sometimes require a registration and sometimes are expensive.

I do have the Aivlasoft EFB, but that doesn't seem to have airways (unless I'm doing something wrong...)