FB852Bulgaria Air · LHR → SOF
live · 10m ago
Route confirmed Bulgaria Air

FB852 LondonLHR · 17:55 SofiaSOF · 22:55

FB852 by Bulgaria Air flies from London (LHR) to Sofia (SOF) for the Fri, Nov 6 departure.

Right nowExpected · today
17:55

departs LHR · on schedule

Typical gate push+27 minmedian posted departure
Typical arrival−1 minmedian over 6 operations
Wins back in air~28 minmedian gate push vs arrival · how planes make up time →

Where the minutes go

last 6 operations · gate push → arrival
0+30+60+90 min
11-01
+43 gate · +8 arrival
10-31
+22 gate · −3 arrival
10-30
+56 gate · +43 arrival
10-28
+31 gate · +1 arrival
10-25
+17 gate · −26 arrival
10-24
+12 gate · −25 arrival

The bar is how late it left the gate; the ring is where it actually arrived. Board clocks, not estimates.

The last 30 days

arrival outcome per operation

median arrival −1 min · 0 cancelled · 6 operations tracked

The route today

live boards
LHRLondonModerate riskLHR delay board →
SOFSofiaOn-time likelySOF delay board →
LHR→SOFevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Weather-conditioned outlook for this flight right now

Measured, 90-day sample
31%Chance of 15+ min delay
1.7%Chance of cancellation
+4 minTypical airport delay in this weather

Driven mainly by LHR (London), currently flying MVFR (marginal visual). 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 at London

Forecast

Sat 7 Nov, local date

High11°Clikely 9°C to 12°C
Low6°Clikely 3°C to 8°C
  • 48% chance of fog

Forecast: GateWeather · incl. data from ECMWF (CC BY 4.0, modified) · Expected values for tomorrow from a forecast model, kept apart from today's measured figures.

Tomorrow at Sofia

Forecast

Sat 7 Nov, local date

High10°Clikely 9°C to 12°C
Low0°Clikely −2°C to 3°C

Forecast: GateWeather · incl. data from ECMWF (CC BY 4.0, modified) · Expected values for tomorrow from a forecast model, kept apart from today's measured figures.

When it flies

scheduled departures
061422
M
T
W
T
F
S
S

Each mark is a scheduled departure at its origin-local time. Today is highlighted.

How FB852 actually runs

Pro Flight Search has tracked every published board update for FB852 across the LHR and SOF boards: schedule changes, gate pushes and actual clocks. Usually lands on time. Based on 5 confirmed landings · 5/5 within 15 min of schedule. Pushes back late but makes up time in the air.

The verdict above is that record speaking, so it reflects how FB852 operates rather than what the timetable promises. Numbers refresh as new flights operate.

Technical record

How this operation is measured

board clocks

Board log

scheduled → actual, per operation
11-01LHR 08:45 09:28 (+43)SOF 13:55 14:03 (+8)
10-31LHR 12:55 13:17 (+22)SOF 18:05 18:02 (−3)
10-30LHR 17:55 18:51 (+56)SOF 22:55 23:38 (+43)
10-28LHR 17:45 18:16 (+31)SOF 22:55 22:56 (+1)
10-25LHR 08:45 09:02 (+17)SOF 13:55 13:29 (−26)
10-24LHR 08:55 09:07 (+12)SOF 14:05 13:40 (−25)

Board clocks recorded as LHR and SOF published them.

Planning around FB852? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure

Cite this data

Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.

Suggested citation

Pro Flight Search: FB852 London to Sofia on-time performance, measured from the LHR and SOF airport boards.

Canonical URL
https://proflightsearch.com/flight/FB852
How we measure this →