Indeed, forget the delights of a free bar in the sky; drinking on AirlineName can be ruinously expensive. Accordinly you might want to scan some of the special deals that AirlineName offer. One good one is to get 2 beers or 2 wines for £7. This saves 80 pence: small fry, but worth it in the long run.
Spirits
Whisky
Glenfiddich Malt Whisky
On some of the routes to Scotland, you'll be hunting for some of the good stuff from north of the border to make the flight go by. Gelnfiddich does just the job - although getting any ice for it to go with can be a struggle.
40.0%. 5cl bottle. £3.30
Gin and Tonic
Gordon's Gin with tonic. It could be worse, far worse.
40.0%. 5cl bottle. £3.30
Baileys
Great after a long dinner over the Urals on your way to Istanbul, before getting some kip at 38,000 feet.40.0%. 5cl bottle. £3.30