What happened
Cause: Too many aircraft were trying to use the same airspace around Boston, so air traffic control held departures to clear room.
The ground stop began at 23:18 UTC on November 5 and ended at 00:14 UTC on November 6, lasting 56 minutes. Departures were held from four air traffic control centers, including Boston's. The advisory listed 571 total delays, with a longest delay of 68 minutes and an average of 34 minutes.
Impact by airline
- Flights
- 123
- Delayed
- 26
- Cancelled
- 0
- Arrivals / departures
- 67 / 56
| Airline | Flights | Delayed / cancelled | Avg delay | On ground | Holding |
|---|---|---|---|---|---|
| Southwest Airlines WN | 6 | 6 / 0 | 37 min | 1 | — |
| American Airlines AA | 11 | 5 / 0 | 38 min | 2 | — |
| Delta Air Lines DL | 19 | 4 / 0 | 21 min | 4 | — |
| JetBlue B6 | 29 | 3 / 0 | 39 min | 2 | — |
| Republic Airways YX | 18 | 2 / 0 | 39 min | 4 | — |
| Jazz QK | 5 | 1 / 0 | 49 min | 2 | — |
| British Airways BA | 2 | 1 / 0 | 19 min | 1 | — |
| Porter Airlines PD | 2 | 1 / 0 | 33 min | — | — |
| Alaska Airlines AS | 1 | 1 / 0 | 31 min | 1 | — |
| BTQ BTQ | 1 | 1 / 0 | 21 min | — | — |
| PVL PVL | 1 | 1 / 0 | 34 min | — | — |
| United Airlines UA | 9 | 0 / 0 | — | 1 | — |
| EJA EJA | 6 | 0 / 0 | — | — | — |
| Aer Lingus EI | 2 | 0 / 0 | — | 1 | — |
| Envoy Air MQ | 2 | 0 / 0 | — | 1 | — |
Delayed 15+ min CancelledOn ground / holding: most seen at once.
Held at origin
- Held at origin
- 6
- Average held
- 1 hr 18 min
- Longest
- 4 hr 3 min
5 from airports in the stop's scope; 1 from outside it, late for other reasons. Of the held flights, 5 since departed.
By origin
By airline
| Airline | Held | Avg | Longest |
|---|---|---|---|
| American Airlines AA | 3 | 1 hr 42 min | 4 hr 3 min |
| JetBlue B6 | 2 | 50 min | 1 hr 13 min |
| Republic Airways YX | 1 | 1 hr | 1 hr |
Inbound in the air and diversions
- Diverted
- 0
Diversions
No inbound flight has been seen diverting during this stop.
Impact by region
| Center | Status | Arrivals | Delayed | Cancelled |
|---|---|---|---|---|
| Washington Center (ZDC) | Held | 9 | 5 | 0 |
| New York Center (ZNY) | Held | 6 | 1 | 0 |
| Cleveland Center (ZOB) | Held | 4 | 0 | 0 |
| Boston Center (ZBW) | Held | 2 | 0 | 0 |
| Outside the US centers | Not held | 14 | 2 | 0 |
| Houston Center (ZHU) | Not held | 5 | 2 | 0 |
| Miami Center (ZMA) | Not held | 5 | 1 | 0 |
| Atlanta Center (ZTL) | Not held | 4 | 1 | 0 |
| Chicago Center (ZAU) | Not held | 2 | 1 | 0 |
| Memphis Center (ZME) | Not held | 2 | 1 | 0 |
| Oakland Center (ZOA) | Not held | 2 | 1 | 0 |
| Indianapolis Center (ZID) | Not held | 3 | 0 | 0 |
| Jacksonville Center (ZJX) | Not held | 3 | 0 | 0 |
| Los Angeles Center (ZLA) | Not held | 3 | 0 | 0 |
| Denver Center (ZDV) | Not held | 1 | 0 | 0 |
| Fort Worth Center (ZFW) | Not held | 1 | 0 | 0 |
| Minneapolis Center (ZMP) | Not held | 1 | 0 | 0 |
Aircraft at the airport
On the ground Holding nearby
Timeline
Ground stop issued at BOS for airspace volume, until 7:15 pm EST. Departures held from ZDC, ZNY, ZOB, ZBW.
Ground stop ended after 56 min.
Advisories
ATCSCC ADVZY 052 BOS/ZBW 11/05/2026 CDM GROUND STOP
CTL ELEMENT: BOS ELEMENT TYPE: APT ADL TIME: 2312Z GROUND STOP PERIOD: 05/2302Z - 06/0015Z DEP FACILITIES INCLUDED: (1stTier+CZY_AP) ZDC ZNY ZOB ZBW CYHZ CYOW CYUL CYYZ CYTZ CYQB PREVIOUS TOTAL, MAXIMUM, AVERAGE DELAYS: 0 / 0 / 0 NEW TOTAL, MAXIMUM, AVERAGE DELAYS: 571 / 68 / 34 PROBABILITY OF EXTENSION: MEDIUM IMPACTING CONDITION: VOLUME / VOLUME COMMENTS: ZBW HOLDING2 FIXES. GS TO MAKE ROOM FOR RECOVERYIN THE NEXT HOUR.Original advisory ↗