What happened
AI-written · may contain mistakes. Written from the advisory text and weather only.
Cause: Too much air traffic was trying to fit into the airspace around Boston at once, so air traffic control held departures from several regional centers.
The ground stop began at 17:11 UTC on October 21, 2026, holding departures at Boston Logan from four air traffic control centers. It ended at 18:16 UTC, after 1 hour and 5 minutes. Advisories had warned it could be extended, but it was lifted without being extended.
Impact by airline
Aircraft seen on the ground at BOS and holding nearby, by airline.
| Airline | On ground | Holding |
|---|---|---|
| JetBlue B6 | 13 | — |
| Republic Airways YX | 6 | — |
| American Airlines AA | 5 | — |
| Delta Air Lines DL | 5 | — |
| Cape Air KS | 2 | — |
| United Airlines UA | 2 | — |
| Austrian Airlines OS | 1 | — |
| Copa Airlines CM | 1 | — |
| El Al LY | 1 | — |
| Envoy Air MQ | 1 | — |
| Frontier Airlines F9 | 1 | — |
| ITA Airways AZ | 1 | — |
| Japan Airlines JL | 1 | — |
| Korean Air KE | 1 | — |
| Southwest Airlines WN | 1 | — |
Impact by region
Air traffic control centers whose departures to the airport were held.
| Center | Status |
|---|---|
| Boston Center (ZBW) | Held |
| Washington Center (ZDC) | Held |
| New York Center (ZNY) | Held |
| Cleveland Center (ZOB) | Held |
Aircraft at the airport
Peak 40 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 BOS for airspace volume, until 2:15 pm EDT. Departures held from ZDC, ZNY, ZOB, ZBW.
Ground stop ended after 1 hr 5 min.
Advisories
The air traffic control advisories issued for this ground stop, as published.
ATCSCC ADVZY 042 BOS/ZBW 10/21/2026 CDM GROUND STOP
CTL ELEMENT: BOS ELEMENT TYPE: APT ADL TIME: 1705Z GROUND STOP PERIOD: 21/1655Z - 21/1815Z CUMULATIVE PROGRAM PERIOD: 21/1700Z - 22/0359Z DEP FACILITIES INCLUDED: (Manual) ZDC ZNY ZOB ZBW CYHZ CYOW CYUL CYYZ CYTZ CYQB PREVIOUS TOTAL, MAXIMUM, AVERAGE DELAYS: 274 / 43 / 15 NEW TOTAL, MAXIMUM, AVERAGE DELAYS: 701 / 62 / 39 PROBABILITY OF EXTENSION: MEDIUM IMPACTING CONDITION: VOLUME / VOLUME COMMENTS:Original advisory ↗