DL51 LondonLHR · 10:55 Salt Lake CitySLC · 14:20
DL51 by Delta Air Lines flies from London (LHR) to Salt Lake City (SLC) for the Fri, Aug 21 departure.
en route from LHR to SLC
board checked 36m ago · checking again in 45s
Board estimate · gate and arrival times. Off blocks 11:27 · typical taxi-out at LHR ≈ 9.4 min. No receiver coverage over open ocean.
Where the minutes go
last 7 operations · gate push → arrivalThe 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 operationmedian arrival −22 min · 0 cancelled · 11 operations tracked
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at LHR and SLC are near their clear-air norm right now, so this reflects the route's recent baseline rather than a weather penalty. For this route and airline, 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 →
When it flies
scheduled departuresEach mark is a scheduled departure at its origin-local time. Today is highlighted.
How DL51 actually runs
Pro Flight Search has tracked every published board update for DL51 across the LHR and SLC boards: schedule changes, gate pushes and actual clocks. Usually lands ~19 min early. Based on 3 confirmed landings · 3/3 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 DL51 operates rather than what the timetable promises. Numbers refresh as new flights operate.
How this operation is measured
Board log
scheduled → actual, per operationAircraft
Recent tails: N858NW, N853NW, N856NW.
Board clocks recorded as LHR and SLC published them.
Planning around DL51? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — DL51 London to Salt Lake City on-time performance, measured from the LHR and SLC airport boards.
https://proflightsearch.com/flight/DL51
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