Congratulations to Arsenal . The Gunners are through to the Champions League final to be held in Budapest at 5pm on Saturday 30 May, against the French team Paris Saint-Germain. But fans are facing huge bills to reach the final and to stay in the host city. Direct air fares from London to the Hungarian capital start at around £1,000, with a night in an “economy double” hotel room priced at £2,000 Wizz Air , which conveniently is based in Budapest, has put on many extra flights to help supporters – and cash in on selling tickets for more than £600 one way from Luton and Gatwick. To go somewhere vaguely close for a lower fare, the obvious locations are Bratislava in Slovakia or – more promisingly, because there are more flights – Vienna. The Austrian capital has good links with Budapest by train or fast ferry down the Danube. But even to Vienna, fares are rising above £700 on the key dates.…