Air Astana, the Kazakh flag carrier, has gone responsive. The solution is based on jQuery (and jQuery UI components), coupled with the Bootstrap CSS framework – pretty standard fare for a responsive site.
The homepage illustrates some common usability challenges among responsive airline sites. For example, on the smartphone, the header and offers carousel appear quite large, taking each approximately 25% of the available device height. Thus the destination selector can feel cramped – having only 45% of the device height available (without scrolling, of course)
Currently, implementation work seems to be ongoing – after selecting journey airports and dates, visitors are redirected to a separate site which is not responsive.
This graphic appears in our blog post on responsive airline sites
NB: Screenshot taken on 27. August 2015 using an Android 5 device.