DL78Delta Air Lines · JFK → PRG
live · just now
Route confirmed Delta Air Lines

DL78 New YorkJFK · 18:45 PraguePRG · 09:00

DL78 by Delta Air Lines flies from New York (JFK) to Prague (PRG).

Right nowNext departure today Operates daily
18:45

scheduled from JFK

Wins back in air~53 minmedian gate push vs arrival · how planes make up time →

The route today

live boards
JFKNew YorkOn-time likelyJFK delay board →
PRGPragueOn-time likelyPRG delay board →
JFK→PRGevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Weather-conditioned outlook for this flight right now

Measured, 90-day sample
36%Chance of 15+ min delay
2.0%Chance of cancellation
+6 minTypical airport delay in this weather

Driven mainly by PRG (Prague), currently flying LIFR (low instrument). 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

Forecast

New York to Prague with Delta Air Lines · Sat 31 Oct, local date

Outlook: below usual
Chance a departure is cancelled
0.4%0.8× usual
Chance a departure leaves 60+ min late
6.0%0.5× usual

Forecast weather: 27% chance of fog at Prague

Forecast: WeatherTomorrow · incl. data from ECMWF (CC BY 4.0, modified) · Fewer than one departure a day on this route with this airline, so read it as a rough guide. · 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 DL78 actually runs

Pro Flight Search has tracked every published board update for DL78 across the JFK and PRG boards: schedule changes, gate pushes and actual clocks. Early read: no clear pattern yet. Only 2 completed legs so far: left about 8 min early but landed about 61 min early. Not enough to call it.

The verdict above is that record speaking, so it reflects how DL78 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
10-30JFK 18:45 18:37 (−8)PRG 09:00 07:59 (−61)
10-23JFK 18:45 18:37 (−8)PRG 09:00 07:59 (−61)

Board clocks recorded as JFK and PRG published them.

Planning around DL78? 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: DL78 New York to Prague on-time performance, measured from the JFK and PRG airport boards.

Canonical URL
https://proflightsearch.com/flight/DL78
How we measure this →