Open interactive map →Cheap flights from London to Sofia
The London to Sofia route currently shows fares from €21. Sofia is a directly reachable destination in Bulgaria from London. The flight typically takes around 3h 7min. Mid-week departures and shoulder-season months tend to keep prices lower on this route. Compare months in the calendar below to identify the cheapest window before locking in your booking.
Price patterns on the London to Sofia route tend to spike during school holidays and public holiday weekends. Booking 4-6 weeks out generally balances availability and price well on this route. If your travel dates are flexible, check the price calendar for the lowest-priced months before searching for specific flights.
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Cheapest month to fly
- September 2026€21DirectCheapest
Based on tracked fares, September is the cheapest month to fly this route at around €21.
Prices last updated: August 2026
September in Sofia
Avg 20°C~5 rainy days
Historical averages from Open-Meteo. Shown for the cheapest travel month.
About Sofia
Bulgaria's capital has quietly grown into one of Southeast Europe's more interesting city-break destinations - affordable, compact, and with a mix of Roman ruins, Orthodox churches, and a lively craft-beer and café scene. Vitosha mountain rises directly south of Sofia, offering hiking and skiing effectively within the city limits.
Alternative routes
Other ways to reach Sofia
Frequently asked questions
How much does a flight from London to Sofia cost?
The cheapest fare currently available from London to Sofia is €21. Prices on this route vary by season, day of week, and how far in advance you book. The month-by-month price calendar on this page shows exactly when fares are highest and lowest, so you can pick the most cost-effective window before searching for specific dates. Fares are refreshed regularly as our flight partners publish new availability.
Are there direct flights from London to Sofia?
Yes - non-stop flights are currently available from London to Sofia. The cheapest direct fare starts at €21, making it a convenient option if you want to avoid layover time. Direct flights are generally quicker and less stressful, especially for shorter trips to Bulgaria. Click through to the booking site to check live availability and schedules for your dates.
When is the cheapest time to fly from London to Sofia?
Prices on this route typically dip during shoulder-season months, away from school holidays and public holiday windows. Mid-week departures - particularly Tuesday to Thursday - tend to be cheaper than flights on Fridays and Sundays from London. The month-by-month price calendar above is the fastest way to identify the cheapest window - look for the months with the lowest fares before committing to travel dates. Booking 3-6 weeks in advance generally offers the best balance of price and seat availability on this route.