What happened
AI-written · may contain mistakes. Written from the advisory text and weather only.
Cause: Air traffic control stopped American Airlines departures for an unspecified reason, while flash flood warnings and a storm advisory were active over the area.
The ground stop began at 22:30 UTC and was set to run until 6:15 pm Eastern. It ended at 23:14 UTC after 44 minutes and was not extended. Departures were held from nine air traffic control centers.
Impact by airline
Flights to and from PHL delayed 30+ minutes during the ground stop and the hour after it.
- Delayed 30+ min
- 72
- Arrivals / departures
- 42 / 30
| Airline | Delayed | Avg delay | On ground | Holding |
|---|---|---|---|---|
| American Airlines AA | 31 | 124 min | — | — |
| PSA Airlines OH | 13 | 143 min | — | — |
| Piedmont Airlines PT | 10 | 141 min | — | — |
| Frontier Airlines F9 | 4 | 97 min | — | — |
| Delta Air Lines DL | 3 | 57 min | — | — |
| Southwest Airlines WN | 3 | 75 min | — | — |
| Alaska Airlines AS | 2 | 85 min | — | — |
| Republic Airways YX | 2 | 58 min | — | — |
| United Airlines UA | 2 | 38 min | — | — |
| GoJet Airlines G7 | 1 | 37 min | — | — |
| JetBlue B6 | 1 | 133 min | — | — |
Delayed 30+ minOn ground / holding: most seen at once.
Held at origin
Flights to PHL still on the ground at their origin 15+ minutes past their scheduled departure while the stop was in effect. Held time is minutes past the scheduled departure.
- Held at origin
- 0
- Average held
- —
- Longest
- —
No inbound flight has been seen held at its origin during this stop.
Inbound in the air and diversions
Flights to PHL that had departed and not yet landed, at each arrivals board sample while the stop was in effect, and inbound flights that landed somewhere else instead.
- Diverted
- 0
Diversions
No inbound flight has been seen diverting during this stop.
Impact by region
Delayed arrivals by the air traffic control center they departed from. Held: departures from that center were stopped.
| Center | Status | Delayed |
|---|---|---|
| Washington Center (ZDC) | Held | 6 |
| Cleveland Center (ZOB) | Held | 4 |
| Chicago Center (ZAU) | Held | 3 |
| Boston Center (ZBW) | Held | 3 |
| Indianapolis Center (ZID) | Held | 3 |
| Atlanta Center (ZTL) | Held | 3 |
| Jacksonville Center (ZJX) | Held | 1 |
| Minneapolis Center (ZMP) | Held | 1 |
| New York Center (ZNY) | Held | 0 |
| Outside the US centers | Not held | 6 |
| Miami Center (ZMA) | Not held | 5 |
| Houston Center (ZHU) | Not held | 2 |
| Los Angeles Center (ZLA) | Not held | 2 |
| Denver Center (ZDV) | Not held | 1 |
| Fort Worth Center (ZFW) | Not held | 1 |
| Salt Lake City Center (ZLC) | Not held | 1 |
Aircraft at the airport
Peak 0 on the ground, 0 holding nearby.
On the ground Holding nearby
Timeline
Every change published while the ground stop was in effect, as seen each minute.
Ground stop issued at PHL for other, until 6:15 pm EST. Departures held from ZAU, ZTL, ZDC, ZNY and 5 more.
Ground stop ended after 44 min.
Advisories
The air traffic control advisories issued for this ground stop, as published.
ATCSCC ADVZY 145 PHL/ZNY 11/12/2026 CDM GROUND STOP
CTL ELEMENT: PHL ELEMENT TYPE: APT ADL TIME: 2227Z GROUND STOP PERIOD: 12/2217Z - 12/2315Z FLT INCL: CARRIER AAL ONLY DEP FACILITIES INCLUDED: (2ndTier+CZY_AP) ZAU ZTL ZDC ZNY ZJX ZOB ZBW ZID ZMP CYHZ CYOW CYUL CYYZ CYTZ CYQB PREVIOUS TOTAL, MAXIMUM, AVERAGE DELAYS: 0 / 0 / 0 NEW TOTAL, MAXIMUM, AVERAGE DELAYS: 937 / 52 / 39 PROBABILITY OF EXTENSION: MEDIUM IMPACTING CONDITION: OTHER / OTHER COMMENTS: AAL AND AAL SUBS ONLY. AIRLINE REQUESTS.Original advisory ↗