The &quot;Calendar of lowest fares&quot; is seriously nifty.<p>Kayak and Skyscanner knows about Ryanair but Expedia and clones don&#x27;t. In general, Skyscanner knows about non-GDS airlines. To see whether a search engine is Ryanair-friendly search for BUD-VDA (Budapest - Ovda) as this route is a recent Ryanair invention. <a href="http:&#x2F;&#x2F;corporate.ryanair.com&#x2F;news&#x2F;news&#x2F;150707-ryanair-announces-first-israel-flights&#x2F;?market=en" rel="nofollow">http:&#x2F;&#x2F;corporate.ryanair.com&#x2F;news&#x2F;news&#x2F;150707-ryanair-announ...</a><p>Same story for Allegiant, search for BLI-OAK.