Considering so many airports (and thus the airports' runways) use overlapping frequencies (i.e. I can think of at least 20 airports that use 111.30 and 109.90 off the top of my head), a worldwide listing of ILS frequencies is rather pointless. ILS listings are found in any airport's AIP (Aeronautical Information Publication) – as long as that airport has a runway with an ILS procedure. As suggested by ointment, you can use Airnav for US (and I think some Canadian) airfields. A favourite of mine is http://skyvector.com, originally a US VFR and Enroute chart host with flight planning capabilities and now has expanded internationally to worldwide coverage of VFR and Enroute charts including information for almost every airfield in the world. However, I think SkyVector only has airport AIP coverage (APDs, DPs, STARs, IAPs, etc.) for the US. If you don't want to play the "Google for Charts" game, here are some great resources: VATSIM Chartfinder: http://www.vatsim.net/charts/ NATS – UK Charts: http://www.nats-uk.ead-it.com/public/index.php%3Foption=com_content&task=blogcategory&id=6&Itemid=13.html Navcanada Airport Charts (link to download is lower down the page): http://www.navcanada.ca/EN/products-and-services/Pages/aeronautical-information-products-canadian-airports-charts.aspx SIA – France charts: http://www.sia.aviation-civile.gouv.fr/html/frameset_aip_uk.htm There's also a service called Charts.aero (http://charts.aero), but considering they are under legal fire from Eurocontrol and NATS, I would call them flaky at best. Personally, I use Navigraph's worldwide chart service, which is payware but reduces the need to play the Google game.