FR8515 LondonSTN · 05:55 SofiaSOF · 11:00
FR8515 by Ryanair flies from London (STN) to Sofia (SOF).
scheduled from STN
Where the minutes go
last 3 operations · gate push → arrivalThe bar is how late it left the gate; the ring is where it actually arrived. Board clocks, not estimates.
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at STN and SOF are near their clear-air norm right now, so this reflects the route's recent baseline rather than a weather penalty. These figures come from both airports' records under conditions like today's, over the last 90 days.
Pro Flight Search tracking, 90 days · the weather × delay correlation study → · live weather risk by airport →
Tomorrow on this route
ForecastLondon to Sofia with Ryanair · Fri 30 Oct, local date
- Chance a departure is cancelled
- 0.3%0.6× usual
- Chance a departure leaves 60+ min late
- 8.7%1.7× usual
Forecast weather: 70% chance of fog at London; 72% chance of rain at Sofia
Forecast: WeatherTomorrow · incl. data from ECMWF (CC BY 4.0, modified) · About 2 departures a day on this route with this airline. · Expected values for tomorrow from a forecast model, kept apart from today's measured figures.
When it flies
scheduled departuresEach mark is a scheduled departure at its origin-local time. Today is highlighted.
Other London to Sofia flights today
same route · RyanairIf FR8515 is cancelled, these are the other Ryanair nonstop flights from London to Sofia on the same day, with scheduled departure times in STN local time. Most flights that show a delay still operate. Rebooking usually helps only when that delay is very large. Every airline on this route →
How FR8515 actually runs
Pro Flight Search has tracked every published board update for FR8515 across the STN and SOF boards: schedule changes, gate pushes and actual clocks. Early read: no clear pattern yet. Only 2 completed legs so far: landed -1 min. Not enough to call it.
The verdict above is that record speaking, so it reflects how FR8515 operates rather than what the timetable promises. Numbers refresh as new flights operate.
How this operation is measured
Board log
scheduled → actual, per operationBoard clocks recorded as STN and SOF published them.
Planning around FR8515? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.
Pro Flight Search: FR8515 London to Sofia on-time performance, measured from the STN and SOF airport boards.
https://proflightsearch.com/flight/FR8515
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