We've gone through them all to help you find the right flight for you. If you can't find what you're looking for, consider widening your search by looking at flights from a different airport.
Both flight prices and accommodation rates fluctuate throughout the year, but searching by month will reveal the cheapest times to fly.
Another way to get a cheap flight is to book last minute – but this does mean you may not be able to get the exact flights you want.
Did you know you can also compare hotel and car hire prices in Bulgaria with Netflights? Take a look to get an idea of prices in Sofia.