British Airways (BA) is offering round-trip, economy-class tickets to London for $4,080, for bookings made before the end of the month. Flights must be completed by May 31. For $4,800 (the same booking and travel dates apply), the carrier will take you to a choice of European countries, including Austria, Belgium, the Czech Republic, Denmark, France, Germany, Hungary, Italy, Ireland, Luxembourg, the Netherlands, Poland, Spain, Sweden and Switzerland. For details go to ww.ba.com and click on 'Current offers'. Or call BA on 2822 9000, or contact your travel agent.