London (UK) to Sofia (Bulgaria) £ 36.98 Return Ticket June 27, 2018 ~ nextstamp London – UK (STN) to Sofia – Bulgaria (SOF) Return Ticket Price: £ 36.98 Average Fare: £ 160.00 Savings: £ 123.02 Airline: Ryanair Date: 11.09.018 to 12.10.2018 Sofia Share this:TweetLike this:Like Loading... Related Published by nextstamp Hi, I'm Diego the Next Stamp author. Travel has been life-changing for me! But, I'm always asked how I can afford to travel so much. The secret is a really cheap flight ticket. Follow my blog and don't miss any deal. View all posts by nextstamp