4Z921Airlink · JNB → CPT
live · 2h ago
Route confirmed Airlink

4Z921 JohannesburgJNB · 07:30 Cape TownCPT · 09:45

4Z921 by Airlink flies from Johannesburg (JNB) to Cape Town (CPT) for the Sat, Oct 31 departure.

Right nowDeparts today · today · as of 06:52
07:30

departs JNB · on schedule

Typical gate push+11 minmedian posted departure
Typical arrival−6 minmedian over 9 operations
Wins back in air~17 minmedian gate push vs arrival · how planes make up time →

Where the minutes go

last 7 operations · gate push → arrival
0+30+60+90 min
10-30
+11 gate · −14 arrival
10-29
+13 gate · −11 arrival
10-28
+25 gate · +6 arrival
10-27
+0 arrival
10-26
+10 gate · −6 arrival
10-25
−10 arrival
10-24
+11 gate · −7 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 −6 min · 0 cancelled · 9 operations tracked

The route today

live boards
JNBJohannesburgOn-time likelyJNB delay board →
CPTCape TownHigh riskCPT delay board →
JNB→CPTevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Weather-conditioned outlook for this flight right now

Measured, 90-day sample
42%Chance of 15+ min delay
1.8%Chance of cancellation
+19 minTypical airport delay in this weather

Driven mainly by CPT (Cape Town), currently flying IFR (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

Johannesburg to Cape Town with Airlink · Sun 1 Nov, local date

Outlook: about usual
Chance a departure is cancelled
0.2%1.0× usual
Chance a departure leaves 60+ min late
2.5%1.1× usual

Forecast: WeatherTomorrow · incl. data from ECMWF (CC BY 4.0, modified) · About 5 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 departures
061422
M
T
W
T
F
S
S

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

Other Johannesburg to Cape Town flights today

same route · Airlink
4Z927departs 10:25
4Z923departs 12:20
4Z931departs 15:05
4Z941departs 16:00
4Z951departs 16:20
4Z929departs 17:40

If 4Z921 is cancelled, these are the other Airlink nonstop flights from Johannesburg to Cape Town on the same day, with scheduled departure times in JNB 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 4Z921 actually runs

Pro Flight Search has tracked every published board update for 4Z921 across the JNB and CPT boards: schedule changes, gate pushes and actual clocks. Usually lands on time. Based on 9 confirmed landings · 9/9 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 4Z921 operates rather than what the timetable promises. Numbers refresh as new flights operate.

Technical record

How this operation is measured

board clocksaircraft

Board log

scheduled → actual, per operation
10-30JNB 07:30 07:41 (+11)CPT 09:45 09:31 (−14)
10-29JNB 07:30 07:43 (+13)CPT 09:45 09:34 (−11)
10-28JNB 07:30 07:55 (+25)CPT 09:45 09:51 (+6)
10-27JNB 07:30CPT 09:45 (+0)
10-26JNB 07:30 07:40 (+10)CPT 09:45 09:39 (−6)
10-25JNB 07:30CPT 09:45 09:35 (−10)
10-24JNB 07:30 07:41 (+11)CPT 09:45 09:38 (−7)
10-23JNB 09:45CPT 09:45 09:54 (+9)
10-22JNB 07:30CPT 09:45 09:51 (+6)

Aircraft

Recent tails: ZS-YAX, ZS-YAC, ZS-YAS, ZS-YAN.

Board clocks recorded as JNB and CPT published them.

Planning around 4Z921? 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: 4Z921 Johannesburg to Cape Town on-time performance, measured from the JNB and CPT airport boards.

Canonical URL
https://proflightsearch.com/flight/4Z921
How we measure this →